224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
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/* D10V-specific support for 32-bit ELF
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Copyright (C) 1996 Free Software Foundation, Inc.
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Contributed by Martin Hunt (hunt@cygnus.com).
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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/* #include "elf/d10v.h" */
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void d10v_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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/* Use REL instead of RELA to save space */
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#define USE_REL
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enum reloc_type
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{
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R_D10V_NONE = 0,
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R_D10V_10_PCREL_R,
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R_D10V_10_PCREL_L,
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R_D10V_16,
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R_D10V_18,
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R_D10V_18_PCREL,
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R_D10V_32,
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R_D10V_max
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};
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static reloc_howto_type elf_d10v_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_D10V_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_NONE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* An PC Relative 10-bit relocation, shifted by 2 */
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/* right container */
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HOWTO (R_D10V_10_PCREL_R, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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10, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_10_PCREL_R", /* name */
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false, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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true), /* pcrel_offset */
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/* An PC Relative 10-bit relocation, shifted by 2 */
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/* left container */
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HOWTO (R_D10V_10_PCREL_L, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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10, /* bitsize */
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true, /* pc_relative */
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15, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_10_PCREL_L", /* name */
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false, /* partial_inplace */
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0x07f8000, /* src_mask */
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0x07f8000, /* dst_mask */
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true), /* pcrel_offset */
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/* A 16 bit absolute relocation */
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HOWTO (R_D10V_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* An 18 bit absolute relocation, right shifted 2 */
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HOWTO (R_D10V_18, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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18, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_18", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A relative 18 bit relocation, right shifted by 2 */
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HOWTO (R_D10V_18_PCREL, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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18, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_18_PCREL", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 32 bit absolute relocation */
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HOWTO (R_D10V_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_32", /* name */
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false, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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};
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/* Map BFD reloc types to D10V ELF reloc types. */
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struct d10v_reloc_map
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{
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unsigned char bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static const struct d10v_reloc_map d10v_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_D10V_NONE, },
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{ BFD_RELOC_D10V_10_PCREL_R, R_D10V_10_PCREL_R },
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{ BFD_RELOC_D10V_10_PCREL_L, R_D10V_10_PCREL_L },
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{ BFD_RELOC_16, R_D10V_16 },
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{ BFD_RELOC_D10V_18, R_D10V_18 },
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{ BFD_RELOC_D10V_18_PCREL, R_D10V_18_PCREL },
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{ BFD_RELOC_32, R_D10V_32 },
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};
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static reloc_howto_type *
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bfd_elf32_bfd_reloc_type_lookup (abfd, code)
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bfd *abfd;
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bfd_reloc_code_real_type code;
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{
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unsigned int i;
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for (i = 0;
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i < sizeof (d10v_reloc_map) / sizeof (struct d10v_reloc_map);
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i++)
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{
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if (d10v_reloc_map[i].bfd_reloc_val == code)
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return &elf_d10v_howto_table[d10v_reloc_map[i].elf_reloc_val];
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}
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return NULL;
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}
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/* Set the howto pointer for an D10V ELF reloc. */
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static void
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d10v_info_to_howto_rel (abfd, cache_ptr, dst)
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bfd *abfd;
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arelent *cache_ptr;
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Elf32_Internal_Rel *dst;
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{
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unsigned int r_type;
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r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) R_D10V_max);
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cache_ptr->howto = &elf_d10v_howto_table[r_type];
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}
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#define ELF_ARCH bfd_arch_d10v
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#define ELF_MACHINE_CODE EM_CYGNUS_D10V
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#define ELF_MAXPAGESIZE 0x1000
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#define TARGET_BIG_SYM bfd_elf32_d10v_vec
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#define TARGET_BIG_NAME "elf32-d10v"
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#define elf_info_to_howto 0
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#define elf_info_to_howto_rel d10v_info_to_howto_rel
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#define elf_backend_object_p 0
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#define elf_backend_final_write_processing 0
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#include "elf32-target.h"
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