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/* D10V-specific support for 32-bit ELF
Copyright (C) 1996 Free Software Foundation, Inc.
Contributed by Martin Hunt (hunt@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 "elf-bfd.h"
/* #include "elf/d10v.h" */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void d10v_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
/* Use REL instead of RELA to save space */
#define USE_REL
enum reloc_type
{
R_D10V_NONE = 0,
R_D10V_10_PCREL_R,
R_D10V_10_PCREL_L,
R_D10V_16,
R_D10V_18,
R_D10V_18_PCREL,
R_D10V_32,
R_D10V_max
};
static reloc_howto_type elf_d10v_howto_table[] =
{
/* This reloc does nothing. */
HOWTO (R_D10V_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
/* An PC Relative 10-bit relocation, shifted by 2 */
/* right container */
HOWTO (R_D10V_10_PCREL_R, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
10, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_10_PCREL_R", /* name */
false, /* partial_inplace */
0xff, /* src_mask */
0xff, /* dst_mask */
true), /* pcrel_offset */
/* An PC Relative 10-bit relocation, shifted by 2 */
/* left container */
HOWTO (R_D10V_10_PCREL_L, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
10, /* bitsize */
true, /* pc_relative */
15, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_10_PCREL_L", /* name */
false, /* partial_inplace */
0x07f8000, /* src_mask */
0x07f8000, /* dst_mask */
true), /* pcrel_offset */
/* A 16 bit absolute relocation */
HOWTO (R_D10V_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_16", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* An 18 bit absolute relocation, right shifted 2 */
HOWTO (R_D10V_18, /* type */
2, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
18, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_18", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* A relative 18 bit relocation, right shifted by 2 */
HOWTO (R_D10V_18_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
18, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_18_PCREL", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true), /* pcrel_offset */
/* A 32 bit absolute relocation */
HOWTO (R_D10V_32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_D10V_32", /* name */
false, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
};
/* Map BFD reloc types to D10V ELF reloc types. */
struct d10v_reloc_map
{
unsigned char bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct d10v_reloc_map d10v_reloc_map[] =
{
{ BFD_RELOC_NONE, R_D10V_NONE, },
{ BFD_RELOC_D10V_10_PCREL_R, R_D10V_10_PCREL_R },
{ BFD_RELOC_D10V_10_PCREL_L, R_D10V_10_PCREL_L },
{ BFD_RELOC_16, R_D10V_16 },
{ BFD_RELOC_D10V_18, R_D10V_18 },
{ BFD_RELOC_D10V_18_PCREL, R_D10V_18_PCREL },
{ BFD_RELOC_32, R_D10V_32 },
};
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0;
i < sizeof (d10v_reloc_map) / sizeof (struct d10v_reloc_map);
i++)
{
if (d10v_reloc_map[i].bfd_reloc_val == code)
return &elf_d10v_howto_table[d10v_reloc_map[i].elf_reloc_val];
}
return NULL;
}
/* Set the howto pointer for an D10V ELF reloc. */
static void
d10v_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf32_Internal_Rel *dst;
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_D10V_max);
cache_ptr->howto = &elf_d10v_howto_table[r_type];
}
#define ELF_ARCH bfd_arch_d10v
#define ELF_MACHINE_CODE EM_CYGNUS_D10V
#define ELF_MAXPAGESIZE 0x1000
#define TARGET_BIG_SYM bfd_elf32_d10v_vec
#define TARGET_BIG_NAME "elf32-d10v"
#define elf_info_to_howto 0
#define elf_info_to_howto_rel d10v_info_to_howto_rel
#define elf_backend_object_p 0
#define elf_backend_final_write_processing 0
#include "elf32-target.h"
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