/* OpenRISC-specific support for 32-bit ELF.
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/* OpenRISC-specific support for 32-bit ELF.
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Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007
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Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by Johan Rydberg, jrydberg@opencores.org
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Contributed by Johan Rydberg, jrydberg@opencores.org
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This file is part of BFD, the Binary File Descriptor library.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf-bfd.h"
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#include "elf/openrisc.h"
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#include "elf/openrisc.h"
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#include "libiberty.h"
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#include "libiberty.h"
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static reloc_howto_type openrisc_elf_howto_table[] =
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static reloc_howto_type openrisc_elf_howto_table[] =
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{
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{
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/* This reloc does nothing. */
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/* This reloc does nothing. */
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HOWTO (R_OPENRISC_NONE, /* type */
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HOWTO (R_OPENRISC_NONE, /* type */
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0, /* rightshift */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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32, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_NONE", /* name */
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"R_OPENRISC_NONE", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* src_mask */
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0, /* dst_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* A PC relative 26 bit relocation, right shifted by 2. */
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/* A PC relative 26 bit relocation, right shifted by 2. */
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HOWTO (R_OPENRISC_INSN_REL_26, /* type */
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HOWTO (R_OPENRISC_INSN_REL_26, /* type */
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2, /* rightshift */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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26, /* bitsize */
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TRUE, /* pc_relative */
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TRUE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_INSN_REL_26", /* name */
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"R_OPENRISC_INSN_REL_26", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* src_mask */
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0x03ffffff, /* dst_mask */
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0x03ffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* A absolute 26 bit relocation, right shifted by 2. */
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/* A absolute 26 bit relocation, right shifted by 2. */
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HOWTO (R_OPENRISC_INSN_ABS_26, /* type */
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HOWTO (R_OPENRISC_INSN_ABS_26, /* type */
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2, /* rightshift */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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26, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_INSN_ABS_26", /* name */
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"R_OPENRISC_INSN_ABS_26", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* src_mask */
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0x03ffffff, /* dst_mask */
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0x03ffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_OPENRISC_LO_16_IN_INSN, /* type */
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HOWTO (R_OPENRISC_LO_16_IN_INSN, /* type */
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0, /* rightshift */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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16, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_LO_16_IN_INSN", /* name */
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"R_OPENRISC_LO_16_IN_INSN", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* src_mask */
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0x0000ffff, /* dst_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_OPENRISC_HI_16_IN_INSN, /* type */
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HOWTO (R_OPENRISC_HI_16_IN_INSN, /* type */
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16, /* rightshift */
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16, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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16, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_HI_16_IN_INSN", /* name */
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"R_OPENRISC_HI_16_IN_INSN", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* src_mask */
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0x0000ffff, /* dst_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* An 8 bit absolute relocation. */
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/* An 8 bit absolute relocation. */
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HOWTO (R_OPENRISC_8, /* type */
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HOWTO (R_OPENRISC_8, /* type */
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0, /* rightshift */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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8, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_8", /* name */
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"R_OPENRISC_8", /* name */
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TRUE, /* partial_inplace */
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TRUE, /* partial_inplace */
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0x0000, /* src_mask */
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0x0000, /* src_mask */
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0x00ff, /* dst_mask */
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0x00ff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* A 16 bit absolute relocation. */
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/* A 16 bit absolute relocation. */
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HOWTO (R_OPENRISC_16, /* type */
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HOWTO (R_OPENRISC_16, /* type */
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0, /* rightshift */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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16, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_16", /* name */
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"R_OPENRISC_16", /* name */
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TRUE, /* partial_inplace */
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TRUE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* A 32 bit absolute relocation. */
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/* A 32 bit absolute relocation. */
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HOWTO (R_OPENRISC_32, /* type */
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HOWTO (R_OPENRISC_32, /* type */
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0, /* rightshift */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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32, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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bfd_elf_generic_reloc, /* special_function */
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"R_OPENRISC_32", /* name */
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"R_OPENRISC_32", /* name */
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TRUE, /* partial_inplace */
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TRUE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy. */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */
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HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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0, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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NULL, /* special_function */
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"R_OPENRISC_GNU_VTINHERIT", /* name */
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"R_OPENRISC_GNU_VTINHERIT", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* src_mask */
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0, /* dst_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage. */
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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */
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HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */
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0, /* rightshift */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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0, /* bitsize */
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FALSE, /* pc_relative */
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FALSE, /* pc_relative */
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0, /* bitpos */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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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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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_OPENRISC_GNU_VTENTRY", /* name */
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"R_OPENRISC_GNU_VTENTRY", /* name */
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FALSE, /* partial_inplace */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* src_mask */
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0, /* dst_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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};
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};
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/* Map BFD reloc types to OpenRISC ELF reloc types. */
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/* Map BFD reloc types to OpenRISC ELF reloc types. */
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struct openrisc_reloc_map
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struct openrisc_reloc_map
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{
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned int openrisc_reloc_val;
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unsigned int openrisc_reloc_val;
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};
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};
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static const struct openrisc_reloc_map openrisc_reloc_map[] =
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static const struct openrisc_reloc_map openrisc_reloc_map[] =
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{
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{
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{ BFD_RELOC_NONE, R_OPENRISC_NONE },
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{ BFD_RELOC_NONE, R_OPENRISC_NONE },
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{ BFD_RELOC_32, R_OPENRISC_32 },
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{ BFD_RELOC_32, R_OPENRISC_32 },
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{ BFD_RELOC_16, R_OPENRISC_16 },
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{ BFD_RELOC_16, R_OPENRISC_16 },
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{ BFD_RELOC_8, R_OPENRISC_8 },
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{ BFD_RELOC_8, R_OPENRISC_8 },
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{ BFD_RELOC_OPENRISC_REL_26, R_OPENRISC_INSN_REL_26 },
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{ BFD_RELOC_OPENRISC_REL_26, R_OPENRISC_INSN_REL_26 },
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{ BFD_RELOC_OPENRISC_ABS_26, R_OPENRISC_INSN_ABS_26 },
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{ BFD_RELOC_OPENRISC_ABS_26, R_OPENRISC_INSN_ABS_26 },
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{ BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN },
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{ BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN },
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{ BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN },
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{ BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN },
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{ BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY }
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{ BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY }
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};
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};
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static reloc_howto_type *
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static reloc_howto_type *
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openrisc_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
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openrisc_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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bfd_reloc_code_real_type code)
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{
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{
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unsigned int i;
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unsigned int i;
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for (i = ARRAY_SIZE (openrisc_reloc_map); --i;)
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for (i = ARRAY_SIZE (openrisc_reloc_map); --i;)
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if (openrisc_reloc_map[i].bfd_reloc_val == code)
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if (openrisc_reloc_map[i].bfd_reloc_val == code)
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return & openrisc_elf_howto_table[openrisc_reloc_map[i].
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return & openrisc_elf_howto_table[openrisc_reloc_map[i].
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openrisc_reloc_val];
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openrisc_reloc_val];
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return NULL;
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return NULL;
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}
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}
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static reloc_howto_type *
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static reloc_howto_type *
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openrisc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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openrisc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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const char *r_name)
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const char *r_name)
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{
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{
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unsigned int i;
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unsigned int i;
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for (i = 0;
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for (i = 0;
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i < (sizeof (openrisc_elf_howto_table)
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i < (sizeof (openrisc_elf_howto_table)
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/ sizeof (openrisc_elf_howto_table[0]));
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/ sizeof (openrisc_elf_howto_table[0]));
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i++)
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i++)
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if (openrisc_elf_howto_table[i].name != NULL
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if (openrisc_elf_howto_table[i].name != NULL
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&& strcasecmp (openrisc_elf_howto_table[i].name, r_name) == 0)
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&& strcasecmp (openrisc_elf_howto_table[i].name, r_name) == 0)
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return &openrisc_elf_howto_table[i];
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return &openrisc_elf_howto_table[i];
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return NULL;
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return NULL;
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}
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}
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/* Set the howto pointer for an OpenRISC ELF reloc. */
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/* Set the howto pointer for an OpenRISC ELF reloc. */
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static void
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static void
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openrisc_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
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openrisc_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
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arelent * cache_ptr,
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arelent * cache_ptr,
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Elf_Internal_Rela * dst)
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Elf_Internal_Rela * dst)
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{
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{
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unsigned int r_type;
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unsigned int r_type;
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|
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r_type = ELF32_R_TYPE (dst->r_info);
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r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) R_OPENRISC_max);
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BFD_ASSERT (r_type < (unsigned int) R_OPENRISC_max);
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cache_ptr->howto = & openrisc_elf_howto_table[r_type];
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cache_ptr->howto = & openrisc_elf_howto_table[r_type];
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}
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}
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/* Perform a single relocation. By default we use the standard BFD
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/* Perform a single relocation. By default we use the standard BFD
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routines, but a few relocs, we have to do them ourselves. */
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routines, but a few relocs, we have to do them ourselves. */
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|
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static bfd_reloc_status_type
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static bfd_reloc_status_type
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openrisc_final_link_relocate (reloc_howto_type *howto,
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openrisc_final_link_relocate (reloc_howto_type *howto,
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bfd *input_bfd,
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bfd *input_bfd,
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asection *input_section,
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asection *input_section,
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bfd_byte *contents,
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bfd_byte *contents,
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Elf_Internal_Rela *rel,
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Elf_Internal_Rela *rel,
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bfd_vma relocation)
|
bfd_vma relocation)
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{
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{
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bfd_reloc_status_type r = bfd_reloc_ok;
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bfd_reloc_status_type r = bfd_reloc_ok;
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|
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switch (howto->type)
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switch (howto->type)
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{
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{
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case R_OPENRISC_LO_16_IN_INSN:
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case R_OPENRISC_LO_16_IN_INSN:
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relocation &= 0xffff;
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relocation &= 0xffff;
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r = _bfd_final_link_relocate (howto, input_bfd, input_section,
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r = _bfd_final_link_relocate (howto, input_bfd, input_section,
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contents, rel->r_offset,
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contents, rel->r_offset,
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relocation, rel->r_addend);
|
relocation, rel->r_addend);
|
break;
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break;
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|
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default:
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default:
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r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
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contents, rel->r_offset,
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contents, rel->r_offset,
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relocation, rel->r_addend);
|
relocation, rel->r_addend);
|
}
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}
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|
|
return r;
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return r;
|
}
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}
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|
|
/* Relocate an OpenRISC ELF section.
|
/* Relocate an OpenRISC ELF section.
|
|
|
The RELOCATE_SECTION function is called by the new ELF backend linker
|
The RELOCATE_SECTION function is called by the new ELF backend linker
|
to handle the relocations for a section.
|
to handle the relocations for a section.
|
|
|
The relocs are always passed as Rela structures; if the section
|
The relocs are always passed as Rela structures; if the section
|
actually uses Rel structures, the r_addend field will always be
|
actually uses Rel structures, the r_addend field will always be
|
zero.
|
zero.
|
|
|
This function is responsible for adjusting the section contents as
|
This function is responsible for adjusting the section contents as
|
necessary, and (if using Rela relocs and generating a relocatable
|
necessary, and (if using Rela relocs and generating a relocatable
|
output file) adjusting the reloc addend as necessary.
|
output file) adjusting the reloc addend as necessary.
|
|
|
This function does not have to worry about setting the reloc
|
This function does not have to worry about setting the reloc
|
address or the reloc symbol index.
|
address or the reloc symbol index.
|
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
LOCAL_SECTIONS is an array giving the section in the input file
|
corresponding to the st_shndx field of each local symbol.
|
corresponding to the st_shndx field of each local symbol.
|
|
|
The global hash table entry for the global symbols can be found
|
The global hash table entry for the global symbols can be found
|
via elf_sym_hashes (input_bfd).
|
via elf_sym_hashes (input_bfd).
|
|
|
When generating relocatable output, this function must handle
|
When generating relocatable output, this function must handle
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
going to be the section symbol corresponding to the output
|
going to be the section symbol corresponding to the output
|
section, which means that the addend must be adjusted
|
section, which means that the addend must be adjusted
|
accordingly. */
|
accordingly. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
openrisc_elf_relocate_section (bfd *output_bfd,
|
openrisc_elf_relocate_section (bfd *output_bfd,
|
struct bfd_link_info *info,
|
struct bfd_link_info *info,
|
bfd *input_bfd,
|
bfd *input_bfd,
|
asection *input_section,
|
asection *input_section,
|
bfd_byte *contents,
|
bfd_byte *contents,
|
Elf_Internal_Rela *relocs,
|
Elf_Internal_Rela *relocs,
|
Elf_Internal_Sym *local_syms,
|
Elf_Internal_Sym *local_syms,
|
asection **local_sections)
|
asection **local_sections)
|
{
|
{
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
struct elf_link_hash_entry **sym_hashes;
|
struct elf_link_hash_entry **sym_hashes;
|
Elf_Internal_Rela *rel;
|
Elf_Internal_Rela *rel;
|
Elf_Internal_Rela *relend;
|
Elf_Internal_Rela *relend;
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
sym_hashes = elf_sym_hashes (input_bfd);
|
sym_hashes = elf_sym_hashes (input_bfd);
|
relend = relocs + input_section->reloc_count;
|
relend = relocs + input_section->reloc_count;
|
|
|
for (rel = relocs; rel < relend; rel++)
|
for (rel = relocs; rel < relend; rel++)
|
{
|
{
|
reloc_howto_type *howto;
|
reloc_howto_type *howto;
|
unsigned long r_symndx;
|
unsigned long r_symndx;
|
Elf_Internal_Sym *sym;
|
Elf_Internal_Sym *sym;
|
asection *sec;
|
asection *sec;
|
struct elf_link_hash_entry *h;
|
struct elf_link_hash_entry *h;
|
bfd_vma relocation;
|
bfd_vma relocation;
|
bfd_reloc_status_type r;
|
bfd_reloc_status_type r;
|
const char *name = NULL;
|
const char *name = NULL;
|
int r_type;
|
int r_type;
|
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
r_type = ELF32_R_TYPE (rel->r_info);
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
|
if (r_type == R_OPENRISC_GNU_VTINHERIT
|
if (r_type == R_OPENRISC_GNU_VTINHERIT
|
|| r_type == R_OPENRISC_GNU_VTENTRY)
|
|| r_type == R_OPENRISC_GNU_VTENTRY)
|
continue;
|
continue;
|
|
|
if ((unsigned int) r_type >
|
if ((unsigned int) r_type >
|
(sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type)))
|
(sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type)))
|
abort ();
|
abort ();
|
|
|
howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
h = NULL;
|
h = NULL;
|
sym = NULL;
|
sym = NULL;
|
sec = NULL;
|
sec = NULL;
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
if (r_symndx < symtab_hdr->sh_info)
|
{
|
{
|
sym = local_syms + r_symndx;
|
sym = local_syms + r_symndx;
|
sec = local_sections[r_symndx];
|
sec = local_sections[r_symndx];
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
|
|
name = bfd_elf_string_from_elf_section
|
name = bfd_elf_string_from_elf_section
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
}
|
}
|
else
|
else
|
{
|
{
|
bfd_boolean unresolved_reloc, warned;
|
bfd_boolean unresolved_reloc, warned;
|
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
r_symndx, symtab_hdr, sym_hashes,
|
r_symndx, symtab_hdr, sym_hashes,
|
h, sec, relocation,
|
h, sec, relocation,
|
unresolved_reloc, warned);
|
unresolved_reloc, warned);
|
}
|
}
|
|
|
if (sec != NULL && elf_discarded_section (sec))
|
if (sec != NULL && elf_discarded_section (sec))
|
{
|
{
|
/* For relocs against symbols from removed linkonce sections,
|
/* For relocs against symbols from removed linkonce sections,
|
or sections discarded by a linker script, we just want the
|
or sections discarded by a linker script, we just want the
|
section contents zeroed. Avoid any special processing. */
|
section contents zeroed. Avoid any special processing. */
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
rel->r_info = 0;
|
rel->r_info = 0;
|
rel->r_addend = 0;
|
rel->r_addend = 0;
|
continue;
|
continue;
|
}
|
}
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
continue;
|
continue;
|
|
|
r = openrisc_final_link_relocate (howto, input_bfd, input_section,
|
r = openrisc_final_link_relocate (howto, input_bfd, input_section,
|
contents, rel, relocation);
|
contents, rel, relocation);
|
|
|
if (r != bfd_reloc_ok)
|
if (r != bfd_reloc_ok)
|
{
|
{
|
const char *msg = NULL;
|
const char *msg = NULL;
|
|
|
switch (r)
|
switch (r)
|
{
|
{
|
case bfd_reloc_overflow:
|
case bfd_reloc_overflow:
|
r = info->callbacks->reloc_overflow
|
r = info->callbacks->reloc_overflow
|
(info, (h ? &h->root : NULL), name, howto->name,
|
(info, (h ? &h->root : NULL), name, howto->name,
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
break;
|
break;
|
|
|
case bfd_reloc_undefined:
|
case bfd_reloc_undefined:
|
r = info->callbacks->undefined_symbol
|
r = info->callbacks->undefined_symbol
|
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
|
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
|
break;
|
break;
|
|
|
case bfd_reloc_outofrange:
|
case bfd_reloc_outofrange:
|
msg = _("internal error: out of range error");
|
msg = _("internal error: out of range error");
|
break;
|
break;
|
|
|
case bfd_reloc_notsupported:
|
case bfd_reloc_notsupported:
|
msg = _("internal error: unsupported relocation error");
|
msg = _("internal error: unsupported relocation error");
|
break;
|
break;
|
|
|
case bfd_reloc_dangerous:
|
case bfd_reloc_dangerous:
|
msg = _("internal error: dangerous relocation");
|
msg = _("internal error: dangerous relocation");
|
break;
|
break;
|
|
|
default:
|
default:
|
msg = _("internal error: unknown error");
|
msg = _("internal error: unknown error");
|
break;
|
break;
|
}
|
}
|
|
|
if (msg)
|
if (msg)
|
r = info->callbacks->warning
|
r = info->callbacks->warning
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
|
|
if (!r)
|
if (!r)
|
return FALSE;
|
return FALSE;
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Return the section that should be marked against GC for a given
|
/* Return the section that should be marked against GC for a given
|
relocation. */
|
relocation. */
|
|
|
static asection *
|
static asection *
|
openrisc_elf_gc_mark_hook (asection *sec,
|
openrisc_elf_gc_mark_hook (asection *sec,
|
struct bfd_link_info *info,
|
struct bfd_link_info *info,
|
Elf_Internal_Rela *rel,
|
Elf_Internal_Rela *rel,
|
struct elf_link_hash_entry *h,
|
struct elf_link_hash_entry *h,
|
Elf_Internal_Sym *sym)
|
Elf_Internal_Sym *sym)
|
{
|
{
|
if (h != NULL)
|
if (h != NULL)
|
switch (ELF32_R_TYPE (rel->r_info))
|
switch (ELF32_R_TYPE (rel->r_info))
|
{
|
{
|
case R_OPENRISC_GNU_VTINHERIT:
|
case R_OPENRISC_GNU_VTINHERIT:
|
case R_OPENRISC_GNU_VTENTRY:
|
case R_OPENRISC_GNU_VTENTRY:
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
}
|
}
|
|
|
/* Look through the relocs for a section during the first phase.
|
/* Look through the relocs for a section during the first phase.
|
Since we don't do .gots or .plts, we just need to consider the
|
Since we don't do .gots or .plts, we just need to consider the
|
virtual table relocs for gc. */
|
virtual table relocs for gc. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
openrisc_elf_check_relocs (bfd *abfd,
|
openrisc_elf_check_relocs (bfd *abfd,
|
struct bfd_link_info *info,
|
struct bfd_link_info *info,
|
asection *sec,
|
asection *sec,
|
const Elf_Internal_Rela *relocs)
|
const Elf_Internal_Rela *relocs)
|
{
|
{
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
struct elf_link_hash_entry **sym_hashes;
|
struct elf_link_hash_entry **sym_hashes;
|
const Elf_Internal_Rela *rel;
|
const Elf_Internal_Rela *rel;
|
const Elf_Internal_Rela *rel_end;
|
const Elf_Internal_Rela *rel_end;
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
return TRUE;
|
return TRUE;
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
sym_hashes = elf_sym_hashes (abfd);
|
sym_hashes = elf_sym_hashes (abfd);
|
|
|
rel_end = relocs + sec->reloc_count;
|
rel_end = relocs + sec->reloc_count;
|
for (rel = relocs; rel < rel_end; rel++)
|
for (rel = relocs; rel < rel_end; rel++)
|
{
|
{
|
struct elf_link_hash_entry *h;
|
struct elf_link_hash_entry *h;
|
unsigned long r_symndx;
|
unsigned long r_symndx;
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
if (r_symndx < symtab_hdr->sh_info)
|
if (r_symndx < symtab_hdr->sh_info)
|
h = NULL;
|
h = NULL;
|
else
|
else
|
{
|
{
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
while (h->root.type == bfd_link_hash_indirect
|
while (h->root.type == bfd_link_hash_indirect
|
|| h->root.type == bfd_link_hash_warning)
|
|| h->root.type == bfd_link_hash_warning)
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
}
|
}
|
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
switch (ELF32_R_TYPE (rel->r_info))
|
{
|
{
|
/* This relocation describes the C++ object vtable hierarchy.
|
/* This relocation describes the C++ object vtable hierarchy.
|
Reconstruct it for later use during GC. */
|
Reconstruct it for later use during GC. */
|
case R_OPENRISC_GNU_VTINHERIT:
|
case R_OPENRISC_GNU_VTINHERIT:
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
return FALSE;
|
return FALSE;
|
break;
|
break;
|
|
|
/* This relocation describes which C++ vtable entries are actually
|
/* This relocation describes which C++ vtable entries are actually
|
used. Record for later use during GC. */
|
used. Record for later use during GC. */
|
case R_OPENRISC_GNU_VTENTRY:
|
case R_OPENRISC_GNU_VTENTRY:
|
BFD_ASSERT (h != NULL);
|
BFD_ASSERT (h != NULL);
|
if (h != NULL
|
if (h != NULL
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
return FALSE;
|
return FALSE;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Set the right machine number. */
|
/* Set the right machine number. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
openrisc_elf_object_p (bfd *abfd)
|
openrisc_elf_object_p (bfd *abfd)
|
{
|
{
|
bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0);
|
bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0);
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Store the machine number in the flags field. */
|
/* Store the machine number in the flags field. */
|
|
|
static void
|
static void
|
openrisc_elf_final_write_processing (bfd *abfd,
|
openrisc_elf_final_write_processing (bfd *abfd,
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
{
|
{
|
unsigned long val;
|
unsigned long val;
|
|
|
switch (bfd_get_mach (abfd))
|
switch (bfd_get_mach (abfd))
|
{
|
{
|
default:
|
default:
|
val = 0;
|
val = 0;
|
break;
|
break;
|
}
|
}
|
|
|
elf_elfheader (abfd)->e_flags &= ~0xf;
|
elf_elfheader (abfd)->e_flags &= ~0xf;
|
elf_elfheader (abfd)->e_flags |= val;
|
elf_elfheader (abfd)->e_flags |= val;
|
}
|
}
|
|
|
|
|
#define ELF_ARCH bfd_arch_openrisc
|
#define ELF_ARCH bfd_arch_openrisc
|
#define ELF_MACHINE_CODE EM_OPENRISC
|
#define ELF_MACHINE_CODE EM_OPENRISC
|
#define ELF_MACHINE_ALT1 EM_OPENRISC_OLD
|
#define ELF_MACHINE_ALT1 EM_OPENRISC_OLD
|
#define ELF_MAXPAGESIZE 0x1000
|
#define ELF_MAXPAGESIZE 0x1000
|
|
|
#define TARGET_BIG_SYM bfd_elf32_openrisc_vec
|
#define TARGET_BIG_SYM bfd_elf32_openrisc_vec
|
#define TARGET_BIG_NAME "elf32-openrisc"
|
#define TARGET_BIG_NAME "elf32-openrisc"
|
|
|
#define elf_info_to_howto_rel NULL
|
#define elf_info_to_howto_rel NULL
|
#define elf_info_to_howto openrisc_info_to_howto_rela
|
#define elf_info_to_howto openrisc_info_to_howto_rela
|
#define elf_backend_relocate_section openrisc_elf_relocate_section
|
#define elf_backend_relocate_section openrisc_elf_relocate_section
|
#define elf_backend_gc_mark_hook openrisc_elf_gc_mark_hook
|
#define elf_backend_gc_mark_hook openrisc_elf_gc_mark_hook
|
#define elf_backend_check_relocs openrisc_elf_check_relocs
|
#define elf_backend_check_relocs openrisc_elf_check_relocs
|
|
|
#define elf_backend_can_gc_sections 1
|
#define elf_backend_can_gc_sections 1
|
#define elf_backend_rela_normal 1
|
#define elf_backend_rela_normal 1
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup
|
#define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup
|
#define bfd_elf32_bfd_reloc_name_lookup openrisc_reloc_name_lookup
|
#define bfd_elf32_bfd_reloc_name_lookup openrisc_reloc_name_lookup
|
|
|
#define elf_backend_object_p openrisc_elf_object_p
|
#define elf_backend_object_p openrisc_elf_object_p
|
#define elf_backend_final_write_processing openrisc_elf_final_write_processing
|
#define elf_backend_final_write_processing openrisc_elf_final_write_processing
|
|
|
#include "elf32-target.h"
|
#include "elf32-target.h"
|
|
|
