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binutils-gdb/bfd/coff-h8500.c

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/* BFD back-end for Hitachi H8/500 COFF binaries.
Copyright 1993, 94, 95, 1997 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Written by Steve Chamberlain, <sac@cygnus.com>.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/h8500.h"
#include "coff/internal.h"
#include "libcoff.h"
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
static reloc_howto_type r_imm8 =
HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);
static reloc_howto_type r_imm16 =
HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);
static reloc_howto_type r_imm24 =
HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);
static reloc_howto_type r_imm32 =
HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);
static reloc_howto_type r_high8 =
HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);
static reloc_howto_type r_low16 =
HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
static reloc_howto_type r_pcrel8 =
HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);
static reloc_howto_type r_pcrel16 =
HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);
static reloc_howto_type r_high16 =
HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);
/* Turn a howto into a reloc number */
static int
coff_h8500_select_reloc (howto)
reloc_howto_type *howto;
{
return howto->type;
}
#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
#define BADMAG(x) H8500BADMAG(x)
#define H8500 1 /* Customize coffcode.h */
#define __A_MAGIC_SET__
/* Code to swap in the reloc */
#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
dst->r_stuff[0] = 'S'; \
dst->r_stuff[1] = 'C';
/* Code to turn a r_type into a howto ptr, uses the above howto table
*/
static void
rtype2howto(internal, dst)
arelent * internal;
struct internal_reloc *dst;
{
switch (dst->r_type)
{
default:
abort ();
break;
case R_H8500_IMM8:
internal->howto = &r_imm8;
break;
case R_H8500_IMM16:
internal->howto = &r_imm16;
break;
case R_H8500_IMM24:
internal->howto = &r_imm24;
break;
case R_H8500_IMM32:
internal->howto = &r_imm32;
break;
case R_H8500_PCREL8:
internal->howto = &r_pcrel8;
break;
case R_H8500_PCREL16:
internal->howto = &r_pcrel16;
break;
case R_H8500_HIGH8:
internal->howto = &r_high8;
break;
case R_H8500_HIGH16:
internal->howto = &r_high16;
break;
case R_H8500_LOW16:
internal->howto = &r_low16;
break;
}
}
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
/* Perform any necessary magic to the addend in a reloc entry */
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
cache_ptr->addend = ext_reloc.r_offset;
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
reloc_processing(relent, reloc, symbols, abfd, section)
static void reloc_processing (relent, reloc, symbols, abfd, section)
arelent * relent;
struct internal_reloc *reloc;
asymbol ** symbols;
bfd * abfd;
asection * section;
{
relent->address = reloc->r_vaddr;
rtype2howto (relent, reloc);
if (reloc->r_symndx > 0)
{
relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
}
else
{
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
}
relent->addend = reloc->r_offset;
relent->address -= section->vma;
}
static void
extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
bfd *in_abfd;
struct bfd_link_info *link_info;
struct bfd_link_order *link_order;
arelent *reloc;
bfd_byte *data;
unsigned int *src_ptr;
unsigned int *dst_ptr;
{
bfd_byte *d = data+*dst_ptr;
asection *input_section = link_order->u.indirect.section;
switch (reloc->howto->type)
{
case R_H8500_IMM8:
bfd_put_8 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
d);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_H8500_HIGH8:
bfd_put_8 (in_abfd,
(bfd_coff_reloc16_get_value (reloc, link_info, input_section)
>> 16),
d );
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_H8500_IMM16:
bfd_put_16 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
d );
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_H8500_LOW16:
bfd_put_16 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
d);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_H8500_HIGH16:
bfd_put_16 (in_abfd,
(bfd_coff_reloc16_get_value (reloc, link_info, input_section)
>>16),
d);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_H8500_IMM24:
{
int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
int o = bfd_get_32(in_abfd, data+ *dst_ptr -1);
v = (v & 0x00ffffff) | (o & 0xff00000);
bfd_put_32 (in_abfd, v, data + *dst_ptr -1);
(*dst_ptr) +=3;
(*src_ptr)+=3;;
}
break;
case R_H8500_IMM32:
{
int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
bfd_put_32 (in_abfd, v, data + *dst_ptr);
(*dst_ptr) +=4;
(*src_ptr)+=4;;
}
break;
case R_H8500_PCREL8:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = link_order->offset
+ *dst_ptr
+ link_order->u.indirect.section->output_section->vma;
int gap = dst - dot - 1; /* -1 since were in the odd byte of the
word and the pc's been incremented */
if (gap > 128 || gap < -128)
{
if (! ((*link_info->callbacks->reloc_overflow)
(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort ();
}
bfd_put_8 (in_abfd, gap, data + *dst_ptr);
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_H8500_PCREL16:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = link_order->offset
+ *dst_ptr
+ link_order->u.indirect.section->output_section->vma;
int gap = dst - dot - 1; /* -1 since were in the odd byte of the
word and the pc's been incremented */
if (gap > 32767 || gap < -32768)
{
if (! ((*link_info->callbacks->reloc_overflow)
(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort ();
}
bfd_put_16 (in_abfd, gap, data + *dst_ptr);
(*dst_ptr)+=2;
(*src_ptr)+=2;
break;
}
default:
abort ();
}
}
#define coff_reloc16_extra_cases extra_case
#include "coffcode.h"
#undef coff_bfd_get_relocated_section_contents
#undef coff_bfd_relax_section
#define coff_bfd_get_relocated_section_contents \
bfd_coff_reloc16_get_relocated_section_contents
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)
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