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1181 |
sfurman |
/* OR32-specific support for 32-bit ELF
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Copyright (C) 2002 Free Software Foundation, Inc.
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Contributed by Ivan Guzvinec <ivang@opencores.org>
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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/or32.h"
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#include "libiberty.h"
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static reloc_howto_type * bfd_elf32_bfd_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void or32_info_to_howto_rel PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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static boolean or32_elf_object_p PARAMS ((bfd *));
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static void or32_elf_final_write_processing PARAMS ((bfd *, boolean));
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static bfd_reloc_status_type or32_elf_32_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type or32_elf_16_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type or32_elf_8_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type or32_elf_const_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type or32_elf_consth_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type or32_elf_jumptarg_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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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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static reloc_howto_type elf_or32_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_OR32_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_OR32_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 standard 32 bit relocation. */
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HOWTO (R_OR32_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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or32_elf_32_reloc, /* special_function */
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"R_OR32_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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/* A standard 16 bit relocation. */
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HOWTO (R_OR32_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_bitfield, /* complain_on_overflow */
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or32_elf_16_reloc, /* special_function */
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"R_OR32_16", /* name */
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false, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard 8 bit relocation. */
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HOWTO (R_OR32_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_bitfield, /* complain_on_overflow */
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or32_elf_8_reloc, /* special_function */
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"R_OR32_8", /* name */
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false, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard low 16 bit relocation. */
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HOWTO (R_OR32_CONST, /* type */
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0, /* rightshift */
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2, /* 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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or32_elf_const_reloc, /* special_function */
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"R_OR32_CONST", /* name */
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false, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard high 16 bit relocation. */
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HOWTO (R_OR32_CONSTH, /* type */
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16, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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or32_elf_consth_reloc, /* special_function */
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"R_OR32_CONSTH", /* name */
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false, /* partial_inplace */
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0xffff0000, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard branch relocation. */
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HOWTO (R_OR32_JUMPTARG, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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28, /* 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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or32_elf_jumptarg_reloc,/* special_function */
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"R_OR32_JUMPTARG", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0x03ffffff, /* dst_mask */
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true), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_OR32_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* 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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NULL, /* special_function */
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"R_OR32_GNU_VTINHERIT", /* 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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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_OR32_GNU_VTENTRY, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* 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_rel_vtable_reloc_fn, /* special_function */
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"R_OR32_GNU_VTENTRY", /* 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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};
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/* Map BFD reloc types to OR32 ELF reloc types. */
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struct or32_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static const struct or32_reloc_map or32_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_OR32_NONE },
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{ BFD_RELOC_32, R_OR32_32 },
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{ BFD_RELOC_16, R_OR32_16 },
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{ BFD_RELOC_8, R_OR32_8 },
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{ BFD_RELOC_LO16, R_OR32_CONST },
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{ BFD_RELOC_HI16, R_OR32_CONSTH },
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{ BFD_RELOC_32_GOT_PCREL, R_OR32_JUMPTARG },
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{ BFD_RELOC_VTABLE_INHERIT, R_OR32_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_ENTRY, R_OR32_GNU_VTENTRY },
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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 ATTRIBUTE_UNUSED;
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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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1183 |
sfurman |
for (i = 0; i < sizeof (or32_reloc_map) / sizeof (or32_reloc_map[0]); i++)
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1181 |
sfurman |
{
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if (or32_reloc_map[i].bfd_reloc_val == code)
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return &elf_or32_howto_table[or32_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 OR32 ELF reloc. */
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static void
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or32_info_to_howto_rel (abfd, cache_ptr, dst)
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bfd *abfd ATTRIBUTE_UNUSED;
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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_OR32_max);
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cache_ptr->howto = &elf_or32_howto_table[r_type];
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}
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/* Set the right machine number for an OR32 ELF file. */
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static boolean
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or32_elf_object_p (abfd)
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bfd *abfd;
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{
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(void) bfd_default_set_arch_mach (abfd, bfd_arch_or32, 0);
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return true;
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}
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/* The final processing done just before writing out an OR32 ELF object file.
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This gets the OR32 architecture right based on the machine number. */
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static void
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or32_elf_final_write_processing (abfd, linker)
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bfd *abfd;
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boolean linker ATTRIBUTE_UNUSED;
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{
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int mach;
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unsigned long val;
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switch (mach = bfd_get_mach (abfd))
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{
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/*
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case bfd_mach_arc_base:
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val = E_OR32_MACH_BASE;
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break;
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*/
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default:
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val = 0;
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return;
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}
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elf_elfheader (abfd)->e_flags &=~ EF_OR32_MACH;
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elf_elfheader (abfd)->e_flags |= val;
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}
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bfd_reloc_status_type
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or32_elf_32_reloc (abfd, reloc_entry, symbol, data, input_section,
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output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section;
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bfd *output_bfd;
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char **error_message ATTRIBUTE_UNUSED;
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280 |
1183 |
sfurman |
{
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281 |
1181 |
sfurman |
if (output_bfd != (bfd *) NULL)
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{
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283 |
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unsigned long insn;
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bfd_size_type addr = reloc_entry->address;
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285 |
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286 |
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reloc_entry->address += input_section->output_offset;
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287 |
1183 |
sfurman |
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288 |
1181 |
sfurman |
insn = bfd_get_32 (abfd, (bfd_byte *) data + addr);
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insn += symbol->section->output_section->vma;
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insn += symbol->section->output_offset;
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insn += symbol->value;
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292 |
1183 |
sfurman |
bfd_put_32 (abfd, insn, (bfd_byte *) data + addr);
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293 |
1181 |
sfurman |
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294 |
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return bfd_reloc_ok;
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295 |
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}
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296 |
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297 |
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return bfd_reloc_continue;
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298 |
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}
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299 |
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300 |
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bfd_reloc_status_type
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301 |
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or32_elf_16_reloc (abfd, reloc_entry, symbol, data, input_section,
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302 |
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output_bfd, error_message)
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303 |
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bfd *abfd;
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304 |
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arelent *reloc_entry;
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305 |
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asymbol *symbol;
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PTR data;
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307 |
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asection *input_section;
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308 |
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bfd *output_bfd;
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309 |
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char **error_message ATTRIBUTE_UNUSED;
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310 |
1183 |
sfurman |
{
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311 |
1181 |
sfurman |
if (output_bfd != (bfd *) NULL)
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312 |
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{
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313 |
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unsigned short insn;
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314 |
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bfd_size_type addr = reloc_entry->address;
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315 |
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316 |
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reloc_entry->address += input_section->output_offset;
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317 |
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318 |
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insn = bfd_get_16 (abfd, (bfd_byte *) data + addr);
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319 |
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insn += symbol->section->output_section->vma;
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insn += symbol->section->output_offset;
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insn += symbol->value;
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322 |
1183 |
sfurman |
bfd_put_16 (abfd, insn, (bfd_byte *) data + addr);
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323 |
1181 |
sfurman |
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324 |
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return bfd_reloc_ok;
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325 |
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}
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326 |
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327 |
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return bfd_reloc_continue;
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328 |
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}
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329 |
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330 |
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bfd_reloc_status_type
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331 |
|
|
or32_elf_8_reloc (abfd, reloc_entry, symbol, data, input_section,
|
332 |
|
|
output_bfd, error_message)
|
333 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
334 |
|
|
arelent *reloc_entry;
|
335 |
|
|
asymbol *symbol;
|
336 |
|
|
PTR data;
|
337 |
|
|
asection *input_section;
|
338 |
|
|
bfd *output_bfd;
|
339 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
340 |
1183 |
sfurman |
{
|
341 |
1181 |
sfurman |
if (output_bfd != (bfd *) NULL)
|
342 |
|
|
{
|
343 |
|
|
unsigned char insn;
|
344 |
|
|
bfd_size_type addr = reloc_entry->address;
|
345 |
|
|
|
346 |
|
|
reloc_entry->address += input_section->output_offset;
|
347 |
|
|
|
348 |
|
|
insn = bfd_get_8 (abfd, (bfd_byte *) data + addr);
|
349 |
|
|
insn += symbol->section->output_section->vma;
|
350 |
|
|
insn += symbol->section->output_offset;
|
351 |
|
|
insn += symbol->value;
|
352 |
1183 |
sfurman |
bfd_put_8 (abfd, insn, (bfd_byte *) data + addr);
|
353 |
1181 |
sfurman |
|
354 |
|
|
return bfd_reloc_ok;
|
355 |
|
|
}
|
356 |
|
|
|
357 |
|
|
return bfd_reloc_continue;
|
358 |
|
|
}
|
359 |
|
|
|
360 |
|
|
/* Do a R_OR32_CONSTH relocation. This has to be done in combination
|
361 |
|
|
with a R_OR32_CONST reloc, because there is a carry from the LO16 to
|
362 |
|
|
the HI16. Here we just save the information we need; we do the
|
363 |
|
|
actual relocation when we see the LO16. OR32 ELF requires that the
|
364 |
|
|
LO16 immediately follow the HI16. As a GNU extension, we permit an
|
365 |
|
|
arbitrary number of HI16 relocs to be associated with a single LO16
|
366 |
|
|
reloc. This extension permits gcc to output the HI and LO relocs
|
367 |
|
|
itself. This code is copied from the elf32-mips.c. */
|
368 |
|
|
|
369 |
|
|
struct or32_consth
|
370 |
|
|
{
|
371 |
|
|
struct or32_consth *next;
|
372 |
|
|
bfd_byte *addr;
|
373 |
|
|
bfd_vma addend;
|
374 |
|
|
};
|
375 |
|
|
|
376 |
|
|
/* FIXME: This should not be a static variable. */
|
377 |
|
|
|
378 |
|
|
static struct or32_consth *or32_consth_list;
|
379 |
|
|
|
380 |
|
|
bfd_reloc_status_type
|
381 |
|
|
or32_elf_consth_reloc (abfd, reloc_entry, symbol, data, input_section,
|
382 |
|
|
output_bfd, error_message)
|
383 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
384 |
|
|
arelent *reloc_entry;
|
385 |
|
|
asymbol *symbol;
|
386 |
|
|
PTR data;
|
387 |
|
|
asection *input_section;
|
388 |
|
|
bfd *output_bfd;
|
389 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
390 |
|
|
{
|
391 |
|
|
bfd_reloc_status_type ret;
|
392 |
|
|
bfd_vma relocation;
|
393 |
|
|
struct or32_consth *n;
|
394 |
1183 |
sfurman |
|
395 |
1181 |
sfurman |
ret = bfd_reloc_ok;
|
396 |
|
|
|
397 |
|
|
if (bfd_is_und_section (symbol->section)
|
398 |
|
|
&& output_bfd == (bfd *) NULL)
|
399 |
|
|
ret = bfd_reloc_undefined;
|
400 |
|
|
|
401 |
|
|
if (bfd_is_com_section (symbol->section))
|
402 |
|
|
relocation = 0;
|
403 |
|
|
else
|
404 |
|
|
relocation = symbol->value;
|
405 |
|
|
|
406 |
|
|
relocation += symbol->section->output_section->vma;
|
407 |
|
|
relocation += symbol->section->output_offset;
|
408 |
|
|
relocation += reloc_entry->addend;
|
409 |
|
|
|
410 |
|
|
if (reloc_entry->address > input_section->_cooked_size)
|
411 |
|
|
return bfd_reloc_outofrange;
|
412 |
|
|
|
413 |
|
|
/* Save the information, and let LO16 do the actual relocation. */
|
414 |
|
|
n = (struct or32_consth *) bfd_malloc (sizeof *n);
|
415 |
|
|
if (n == NULL)
|
416 |
|
|
return bfd_reloc_outofrange;
|
417 |
|
|
n->addr = (bfd_byte *) data + reloc_entry->address;
|
418 |
|
|
n->addend = relocation;
|
419 |
|
|
n->next = or32_consth_list;
|
420 |
|
|
or32_consth_list = n;
|
421 |
|
|
|
422 |
|
|
if (output_bfd != (bfd *) NULL)
|
423 |
|
|
reloc_entry->address += input_section->output_offset;
|
424 |
|
|
|
425 |
|
|
return ret;
|
426 |
|
|
}
|
427 |
|
|
|
428 |
|
|
/* Do a R_OR32_CONST relocation. This is a straightforward 16 bit
|
429 |
|
|
inplace relocation; this function exists in order to do the
|
430 |
|
|
R_OR32_CONSTH relocation described above. */
|
431 |
|
|
|
432 |
|
|
bfd_reloc_status_type
|
433 |
|
|
or32_elf_const_reloc (abfd, reloc_entry, symbol, data, input_section,
|
434 |
|
|
output_bfd, error_message)
|
435 |
|
|
bfd *abfd;
|
436 |
|
|
arelent *reloc_entry;
|
437 |
|
|
asymbol *symbol;
|
438 |
|
|
PTR data;
|
439 |
|
|
asection *input_section;
|
440 |
|
|
bfd *output_bfd;
|
441 |
|
|
char **error_message;
|
442 |
|
|
{
|
443 |
|
|
if (or32_consth_list != NULL)
|
444 |
|
|
{
|
445 |
|
|
struct or32_consth *l;
|
446 |
|
|
|
447 |
|
|
l = or32_consth_list;
|
448 |
|
|
while (l != NULL)
|
449 |
|
|
{
|
450 |
|
|
unsigned long insn;
|
451 |
|
|
unsigned long val;
|
452 |
|
|
unsigned long vallo;
|
453 |
|
|
struct or32_consth *next;
|
454 |
|
|
|
455 |
|
|
/* Do the HI16 relocation. Note that we actually don't need
|
456 |
|
|
to know anything about the LO16 itself, except where to
|
457 |
|
|
find the low 16 bits of the addend needed by the LO16. */
|
458 |
|
|
insn = bfd_get_32 (abfd, l->addr);
|
459 |
|
|
vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
|
460 |
|
|
& 0xffff);
|
461 |
|
|
val = ((insn & 0xffff) << 16) + vallo;
|
462 |
|
|
val += l->addend;
|
463 |
|
|
|
464 |
|
|
insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
|
465 |
|
|
bfd_put_32 (abfd, insn, l->addr);
|
466 |
|
|
|
467 |
|
|
next = l->next;
|
468 |
|
|
free (l);
|
469 |
|
|
l = next;
|
470 |
|
|
}
|
471 |
|
|
|
472 |
|
|
or32_consth_list = NULL;
|
473 |
|
|
}
|
474 |
|
|
|
475 |
|
|
if (output_bfd != (bfd *) NULL)
|
476 |
|
|
{
|
477 |
|
|
unsigned long insn, tmp;
|
478 |
|
|
bfd_size_type addr = reloc_entry->address;
|
479 |
|
|
|
480 |
|
|
reloc_entry->address += input_section->output_offset;
|
481 |
|
|
|
482 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *) data + addr);
|
483 |
|
|
tmp = insn & 0x0000ffff;
|
484 |
|
|
tmp += symbol->section->output_section->vma;
|
485 |
|
|
tmp += symbol->section->output_offset;
|
486 |
|
|
tmp += symbol->value;
|
487 |
|
|
insn = (insn & 0xffff0000) | (tmp & 0x0000ffff);
|
488 |
|
|
bfd_put_32 (abfd, insn, (bfd_byte *) data + addr);
|
489 |
|
|
|
490 |
|
|
return bfd_reloc_ok;
|
491 |
|
|
}
|
492 |
|
|
|
493 |
|
|
/* Now do the LO16 reloc in the usual way. */
|
494 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
495 |
|
|
input_section, output_bfd, error_message);
|
496 |
|
|
}
|
497 |
|
|
|
498 |
|
|
bfd_reloc_status_type
|
499 |
|
|
or32_elf_jumptarg_reloc (abfd, reloc_entry, symbol, data, input_section,
|
500 |
|
|
output_bfd, error_message)
|
501 |
|
|
bfd *abfd;
|
502 |
|
|
arelent *reloc_entry;
|
503 |
|
|
asymbol *symbol ATTRIBUTE_UNUSED;
|
504 |
|
|
PTR data;
|
505 |
|
|
asection *input_section;
|
506 |
|
|
bfd *output_bfd;
|
507 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
508 |
1183 |
sfurman |
{
|
509 |
1181 |
sfurman |
if (output_bfd != (bfd *) NULL)
|
510 |
|
|
{
|
511 |
|
|
unsigned long insn, tmp;
|
512 |
|
|
bfd_size_type addr = reloc_entry->address;
|
513 |
|
|
|
514 |
|
|
reloc_entry->address += input_section->output_offset;
|
515 |
|
|
|
516 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *) data + addr);
|
517 |
|
|
tmp = insn | 0xfc000000;
|
518 |
|
|
tmp -= (input_section->output_offset >> 2);
|
519 |
|
|
insn = (insn & 0xfc000000) | (tmp & 0x03ffffff);
|
520 |
1183 |
sfurman |
bfd_put_32 (abfd, insn, (bfd_byte *) data + addr);
|
521 |
1181 |
sfurman |
|
522 |
|
|
return bfd_reloc_ok;
|
523 |
|
|
}
|
524 |
|
|
|
525 |
|
|
return bfd_reloc_continue;
|
526 |
|
|
}
|
527 |
|
|
|
528 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_or32_little_vec
|
529 |
|
|
#define TARGET_LITTLE_NAME "elf32-littleor32"
|
530 |
|
|
#define TARGET_BIG_SYM bfd_elf32_or32_big_vec
|
531 |
|
|
#define TARGET_BIG_NAME "elf32-or32"
|
532 |
|
|
#define ELF_ARCH bfd_arch_or32
|
533 |
|
|
#define ELF_MACHINE_CODE EM_OR32
|
534 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
535 |
|
|
|
536 |
|
|
#define elf_info_to_howto 0
|
537 |
|
|
#define elf_info_to_howto_rel or32_info_to_howto_rel
|
538 |
|
|
#define elf_backend_object_p or32_elf_object_p
|
539 |
|
|
#define elf_backend_final_write_processing \
|
540 |
|
|
or32_elf_final_write_processing
|
541 |
|
|
|
542 |
|
|
#include "elf32-target.h"
|