197 lines
6.4 KiB
C
197 lines
6.4 KiB
C
/* BFD back-end for Motorola 68000 COFF binaries.
|
|
Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
|
|
Written by Cygnus Support.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
#include "obstack.h"
|
|
#include "coff/m68k.h"
|
|
#include "coff/internal.h"
|
|
#include "libcoff.h"
|
|
|
|
#ifndef LYNX_SPECIAL_FN
|
|
#define LYNX_SPECIAL_FN 0
|
|
#endif
|
|
|
|
/* The page size is a guess based on ELF. */
|
|
#define COFF_PAGE_SIZE 0x2000
|
|
|
|
/* Clean up namespace. */
|
|
#define m68kcoff_howto_table _bfd_m68kcoff_howto_table
|
|
#define m68k_rtype2howto _bfd_m68kcoff_rtype2howto
|
|
#define m68k_howto2rtype _bfd_m68kcoff_howto2rtype
|
|
|
|
#ifdef ONLY_DECLARE_RELOCS
|
|
extern reloc_howto_type m68kcoff_howto_table[];
|
|
#else
|
|
reloc_howto_type m68kcoff_howto_table[] =
|
|
{
|
|
HOWTO(R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "8", true, 0x000000ff,0x000000ff, false),
|
|
HOWTO(R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "16", true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO(R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "32", true, 0xffffffff,0xffffffff, false),
|
|
HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP8", true, 0x000000ff,0x000000ff, false),
|
|
HOWTO(R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP16", true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO(R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP32", true, 0xffffffff,0xffffffff, false),
|
|
HOWTO(R_RELLONG_NEG, 0, -2, 32, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "-32", true, 0xffffffff,0xffffffff, false),
|
|
};
|
|
#endif /* not ONLY_DECLARE_RELOCS */
|
|
|
|
#ifndef BADMAG
|
|
#define BADMAG(x) M68KBADMAG(x)
|
|
#endif
|
|
#define M68 1 /* Customize coffcode.h */
|
|
|
|
/* Turn a howto into a reloc number */
|
|
|
|
#ifdef ONLY_DECLARE_RELOCS
|
|
extern void m68k_rtype2howto PARAMS ((arelent *internal, int relocentry));
|
|
extern int m68k_howto2rtype PARAMS ((CONST struct reloc_howto_struct *));
|
|
extern const reloc_howto_type *_bfd_coff_m68k_reloc_type_lookup
|
|
PARAMS ((bfd *, bfd_reloc_code_real_type));
|
|
#else
|
|
void
|
|
m68k_rtype2howto(internal, relocentry)
|
|
arelent *internal;
|
|
int relocentry;
|
|
{
|
|
switch (relocentry)
|
|
{
|
|
case R_RELBYTE: internal->howto = m68kcoff_howto_table + 0; break;
|
|
case R_RELWORD: internal->howto = m68kcoff_howto_table + 1; break;
|
|
case R_RELLONG: internal->howto = m68kcoff_howto_table + 2; break;
|
|
case R_PCRBYTE: internal->howto = m68kcoff_howto_table + 3; break;
|
|
case R_PCRWORD: internal->howto = m68kcoff_howto_table + 4; break;
|
|
case R_PCRLONG: internal->howto = m68kcoff_howto_table + 5; break;
|
|
case R_RELLONG_NEG: internal->howto = m68kcoff_howto_table + 6; break;
|
|
}
|
|
}
|
|
|
|
int
|
|
m68k_howto2rtype (internal)
|
|
CONST struct reloc_howto_struct *internal;
|
|
{
|
|
if (internal->pc_relative)
|
|
{
|
|
switch (internal->bitsize)
|
|
{
|
|
case 32: return R_PCRLONG;
|
|
case 16: return R_PCRWORD;
|
|
case 8: return R_PCRBYTE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (internal->bitsize)
|
|
{
|
|
case 32: return R_RELLONG;
|
|
case 16: return R_RELWORD;
|
|
case 8: return R_RELBYTE;
|
|
}
|
|
}
|
|
return R_RELLONG;
|
|
}
|
|
|
|
const reloc_howto_type *
|
|
_bfd_coff_m68k_reloc_type_lookup (abfd, code)
|
|
bfd *abfd;
|
|
bfd_reloc_code_real_type code;
|
|
{
|
|
switch (code)
|
|
{
|
|
default: return NULL;
|
|
case BFD_RELOC_8: return m68kcoff_howto_table + 0;
|
|
case BFD_RELOC_16: return m68kcoff_howto_table + 1;
|
|
case BFD_RELOC_CTOR:
|
|
case BFD_RELOC_32: return m68kcoff_howto_table + 2;
|
|
case BFD_RELOC_8_PCREL: return m68kcoff_howto_table + 3;
|
|
case BFD_RELOC_16_PCREL: return m68kcoff_howto_table + 4;
|
|
case BFD_RELOC_32_PCREL: return m68kcoff_howto_table + 5;
|
|
/* FIXME: There doesn't seem to be a code for R_RELLONG_NEG. */
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
#endif /* not ONLY_DECLARE_RELOCS */
|
|
|
|
#define RTYPE2HOWTO(internal, relocentry) \
|
|
m68k_rtype2howto(internal, (relocentry)->r_type)
|
|
|
|
#define SELECT_RELOC(external, internal) \
|
|
external.r_type = m68k_howto2rtype(internal);
|
|
|
|
#define coff_bfd_reloc_type_lookup _bfd_coff_m68k_reloc_type_lookup
|
|
|
|
#include "coffcode.h"
|
|
|
|
const bfd_target
|
|
#ifdef TARGET_SYM
|
|
TARGET_SYM =
|
|
#else
|
|
m68kcoff_vec =
|
|
#endif
|
|
{
|
|
#ifdef TARGET_NAME
|
|
TARGET_NAME,
|
|
#else
|
|
"coff-m68k", /* name */
|
|
#endif
|
|
bfd_target_coff_flavour,
|
|
true, /* data byte order is big */
|
|
true, /* header byte order is big */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
#ifdef NAMES_HAVE_UNDERSCORE
|
|
'_',
|
|
#else
|
|
0, /* leading underscore */
|
|
#endif
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
1, /* minimum section alignment */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE
|
|
};
|