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/* Intel 960 COFF support for BFD. */
/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Diddler.
BFD 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 1, or (at your option)
any later version.
BFD 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 BFD; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* $Id$ */
#define I960 1
#define BADMAG(x) I960BADMAG(x)
#include <ansidecl.h>
#include <sysdep.h>
#include "bfd.h"
#include "libbfd.h"
#include "obstack.h"
#include "intel-coff.h"
#include "libcoff.h" /* to allow easier abstraction-breaking */
#define CALLS 0x66003800 /* Template for 'calls' instruction */
#define BAL 0x0b000000 /* Template for 'bal' instruction */
#define BAL_MASK 0x00ffffff
static bfd_reloc_status_enum_type
optcall_callback(abfd, reloc_entry, symbol_in, data, ignore_input_section)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol_in;
unsigned char *data;
asection *ignore_input_section;
{
/* This item has already been relocated correctly, but we may be
* able to patch in yet better code - done by digging out the
* correct info on this symbol */
bfd_reloc_status_enum_type result;
coff_symbol_type *cs = coffsymbol(symbol_in);
/* So the target symbol has to be of coff type, and the symbol
has to have the correct native information within it */
if ((cs->symbol.the_bfd->xvec->flavour != bfd_target_coff_flavour_enum)
|| (cs->native == (struct internal_syment *)NULL)) {
/* This is interesting, consider the case where we're outputting */
/* coff from a mix n match input, linking from coff to a symbol */
/* defined in a bout file will cause this match to be true. Should */
/* I complain ? - This will only work if the bout symbol is non */
/* leaf. */
result = bfd_reloc_dangerous;
}
else {
switch (cs->native->n_sclass)
{
case C_LEAFSTAT:
case C_LEAFEXT:
/* This is a call to a leaf procedure, replace instruction with a bal
to the correct location */
{
union internal_auxent *aux = (union internal_auxent *)(cs->native+2);
int word = bfd_get_32(abfd, data + reloc_entry->address);
int olf = (aux->x_bal.x_balntry - cs->native->n_value);
BFD_ASSERT(cs->native->n_numaux==2);
/* We replace the original call instruction with a bal to */
/* the bal entry point - the offset of which is described in the */
/* 2nd auxent of the original symbol. We keep the native sym and */
/* auxents untouched, so the delta between the two is the */
/* offset of the bal entry point */
word = ((word + olf) & BAL_MASK) | BAL;
bfd_put_32(abfd, word, data+reloc_entry->address);
}
result = bfd_reloc_ok;
break;
case C_SCALL:
{
/* This is a call to a system call, replace with a calls to # */
BFD_ASSERT(0);
}
break;
default:
result = bfd_reloc_ok;
break;
}
}
return result;
}
static reloc_howto_type howto_table[] =
{
{0},
{1},
{2},
{3},
{4},
{5},
{6},
{7},
{8},
{9},
{10},
{11},
{12},
{13},
{14},
{15},
{16},
{ (unsigned int) R_RELLONG, 0, 2, 32,false, 0, true, true,
0,"rellong", true, 0xffffffff, 0xffffffff},
{18},
{19},
{20},
{21},
{22},
{23},
{24},
{ R_IPRMED, 0, 2, 24,true,0, true, true,0,"iprmed ", true,
0x00ffffff, 0x00ffffff},
{26},
{ R_OPTCALL, 0,2,24,true,0, true, true, optcall_callback,
"optcall", true, 0x00ffffff, 0x00ffffff},
};
/* The real code is in coffcode.h */
#include "coffcode.h"
bfd_target icoff_little_vec =
{
"coff-Intel-little", /* name */
bfd_target_coff_flavour_enum,
false, /* data byte order is little */
false, /* header byte order is little */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, coff_mkobject, /* bfd_set_format */
_bfd_generic_mkarchive, bfd_false},
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
JUMP_TABLE(coff)
};
bfd_target icoff_big_vec =
{
"coff-Intel-big", /* name */
bfd_target_coff_flavour_enum,
false, /* data byte order is little */
true, /* header byte order is big */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, coff_mkobject, /* bfd_set_format */
_bfd_generic_mkarchive, bfd_false},
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
JUMP_TABLE(coff)
};
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