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237b5c4c9a
(elf_v850_howto_table): Add support for R_V850_{32,16,8}.
(v850_reloc_map): Add translation from BFD_RELOC_{32,16,8}
to R_V850_{32,16,8}.
So we don't get "reloc XXX not supported" messages anymore.
251 lines
8.5 KiB
C
251 lines
8.5 KiB
C
/* V850-specific support for 32-bit ELF
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Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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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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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 v850_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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/* Try to minimize the amount of space occupied by relocation tables
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on the ROM (not that the ROM won't be swamped by other ELF overhead). */
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#define USE_REL
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enum reloc_type
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{
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R_V850_NONE = 0,
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R_V850_9_PCREL,
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R_V850_22_PCREL,
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R_V850_HI16_S,
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R_V850_HI16,
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R_V850_LO16,
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R_V850_32,
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R_V850_16,
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R_V850_8,
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R_V850_max
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};
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static reloc_howto_type elf_v850_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_V850_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_V850_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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/* A PC relative 9 bit branch. */
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HOWTO (R_V850_9_PCREL, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* 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_V850_9_PCREL", /* name */
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false, /* partial_inplace */
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0x00ffffff, /* src_mask */
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0x00ffffff, /* dst_mask */
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true), /* pcrel_offset */
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/* A PC relative 22 bit branch. */
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HOWTO (R_V850_22_PCREL, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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22, /* bitsize */
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true, /* pc_relative */
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7, /* 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_V850_22_PCREL", /* name */
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false, /* partial_inplace */
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0x07ffff80, /* src_mask */
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0x07ffff80, /* dst_mask */
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true), /* pcrel_offset */
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/* High 16 bits of symbol value. */
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HOWTO (R_V850_HI16_S, /* 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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16, /* 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_V850_HI16_S", /* name */
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true, /* 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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/* High 16 bits of symbol value. */
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HOWTO (R_V850_HI16, /* 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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16, /* 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_V850_HI16", /* name */
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true, /* 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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/* Low 16 bits of symbol value. */
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HOWTO (R_V850_LO16, /* 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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16, /* 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_V850_LO16", /* name */
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true, /* 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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/* Simple 32bit reloc. */
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HOWTO (R_V850_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_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_V850_32", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Simple 16bit reloc. */
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HOWTO (R_V850_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_V850_16", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Simple 8bit reloc. */
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HOWTO (R_V850_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* 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_V850_8", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xff, /* dst_mask */
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false), /* pcrel_offset */
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};
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/* Map BFD reloc types to V850 ELF reloc types. */
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struct v850_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 v850_reloc_map v850_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_V850_NONE, },
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{ BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL, },
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{ BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL, },
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{ BFD_RELOC_HI16_S, R_V850_HI16_S, },
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{ BFD_RELOC_HI16, R_V850_HI16, },
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{ BFD_RELOC_LO16, R_V850_LO16, },
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{ BFD_RELOC_32, R_V850_32, },
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{ BFD_RELOC_16, R_V850_16, },
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{ BFD_RELOC_8, R_V850_8, },
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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 (v850_reloc_map) / sizeof (struct v850_reloc_map);
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i++)
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{
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if (v850_reloc_map[i].bfd_reloc_val == code)
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return &elf_v850_howto_table[v850_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 V850 ELF reloc. */
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static void
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v850_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_V850_max);
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cache_ptr->howto = &elf_v850_howto_table[r_type];
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}
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#define TARGET_BIG_SYM bfd_elf32_v850_vec
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#define TARGET_BIG_NAME "elf32-v850"
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#define ELF_ARCH bfd_arch_v850
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#define ELF_MACHINE_CODE EM_CYGNUS_V850
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#define ELF_MAXPAGESIZE 0x1000
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#define elf_info_to_howto 0
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#define elf_info_to_howto_rel v850_info_to_howto_rel
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#include "elf32-target.h"
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