mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
281 lines
7.5 KiB
C
281 lines
7.5 KiB
C
/* BFD back-end for Zilog Z800n COFF binaries.
|
|
Copyright 1992, 1993, 1994 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 "obstack.h"
|
|
#include "libbfd.h"
|
|
#include "bfdlink.h"
|
|
#include "coff/z8k.h"
|
|
#include "coff/internal.h"
|
|
#include "libcoff.h"
|
|
|
|
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
|
|
|
|
static reloc_howto_type r_imm32 =
|
|
HOWTO (R_IMM32, 0, 1, 32, false, 0,
|
|
complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
|
|
0xffffffff, false);
|
|
|
|
static reloc_howto_type r_imm4l =
|
|
HOWTO (R_IMM4L, 0, 1, 4, false, 0,
|
|
complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
|
|
|
|
static reloc_howto_type r_da =
|
|
HOWTO (R_IMM16, 0, 1, 16, false, 0,
|
|
complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
|
|
false);
|
|
|
|
static reloc_howto_type r_imm8 =
|
|
HOWTO (R_IMM8, 0, 1, 8, false, 0,
|
|
complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
|
|
false);
|
|
|
|
static reloc_howto_type r_jr =
|
|
HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0,
|
|
"r_jr", true, 0, 0, true);
|
|
|
|
/* Turn a howto into a reloc number */
|
|
|
|
static int
|
|
coff_z8k_select_reloc (howto)
|
|
reloc_howto_type *howto;
|
|
{
|
|
return howto->type;
|
|
}
|
|
|
|
#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
|
|
|
|
|
|
#define BADMAG(x) Z8KBADMAG(x)
|
|
#define Z8K 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:
|
|
fprintf (stderr, "BAD 0x%x\n", dst->r_type);
|
|
case R_IMM8:
|
|
internal->howto = &r_imm8;
|
|
break;
|
|
case R_IMM16:
|
|
internal->howto = &r_da;
|
|
break;
|
|
case R_JR:
|
|
internal->howto = &r_jr;
|
|
break;
|
|
case R_IMM32:
|
|
internal->howto = &r_imm32;
|
|
break;
|
|
case R_IMM4L:
|
|
internal->howto = &r_imm4l;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
|
|
|
|
|
|
/* Perform any necessaru 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;
|
|
{
|
|
asection *input_section = link_order->u.indirect.section;
|
|
|
|
switch (reloc->howto->type)
|
|
{
|
|
case R_IMM8:
|
|
bfd_put_8 (in_abfd,
|
|
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
|
|
data + *dst_ptr);
|
|
(*dst_ptr) += 1;
|
|
(*src_ptr) += 1;
|
|
break;
|
|
|
|
case R_IMM32:
|
|
bfd_put_32 (in_abfd,
|
|
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
|
|
data + *dst_ptr);
|
|
(*dst_ptr) += 4;
|
|
(*src_ptr) += 4;
|
|
break;
|
|
|
|
case R_IMM4L:
|
|
bfd_put_8 (in_abfd,
|
|
((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
|
|
| (0x0f
|
|
& bfd_coff_reloc16_get_value (reloc, link_info,
|
|
input_section))),
|
|
data + *dst_ptr);
|
|
(*dst_ptr) += 1;
|
|
(*src_ptr) += 1;
|
|
break;
|
|
|
|
case R_IMM16:
|
|
bfd_put_16 (in_abfd,
|
|
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
|
|
data + *dst_ptr);
|
|
(*dst_ptr) += 2;
|
|
(*src_ptr) += 2;
|
|
break;
|
|
|
|
case R_JR:
|
|
{
|
|
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
|
|
input_section);
|
|
bfd_vma dot = (link_order->offset
|
|
+ *dst_ptr
|
|
+ input_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 & 1)
|
|
abort ();
|
|
gap /= 2;
|
|
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;
|
|
}
|
|
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
|
|
|
|
const bfd_target z8kcoff_vec =
|
|
{
|
|
"coff-z8k", /* name */
|
|
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),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
'_', /* leading symbol underscore */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
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,
|
|
};
|