707bad1b21
Prevent an out-of-bounds `visium_elf_howto_table' table access in `visium_info_to_howto_rela' by using the size of the table rather than R_VISIUM_max to determine the number of entries in the contiguous regular Visium relocation range defined and described in the table. bfd/ * elf32-visium.c (visium_info_to_howto_rela): Correct the range check for `visium_elf_howto_table' table access.
880 lines
26 KiB
C
880 lines
26 KiB
C
/* Visium-specific support for 32-bit ELF.
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Copyright (C) 2003-2018 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 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., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "sysdep.h"
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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/visium.h"
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#include "libiberty.h"
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static bfd_reloc_status_type visium_elf_howto_parity_reloc
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(bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
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static reloc_howto_type visium_elf_howto_table[] = {
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/* This reloc does nothing. */
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HOWTO (R_VISIUM_NONE, /* type */
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0, /* rightshift */
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3, /* 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_generic_reloc, /* special_function */
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"R_VISIUM_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 8 bit absolute relocation. */
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HOWTO (R_VISIUM_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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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_8", /* name */
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FALSE, /* partial_inplace */
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0x00, /* src_mask */
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0xff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 16 bit absolute relocation. */
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HOWTO (R_VISIUM_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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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_16", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 32 bit absolute relocation. */
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HOWTO (R_VISIUM_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_32", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 8 bit PC relative relocation. */
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HOWTO (R_VISIUM_8_PCREL, /* 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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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_8_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x00, /* src_mask */
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0xff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 16 bit PC relative relocation. */
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HOWTO (R_VISIUM_16_PCREL, /* 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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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_16_PCREL", /* name */
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FALSE, /* partial inplace */
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0x0000, /* src_mask */
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0xffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 32-bit PC relative relocation. */
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HOWTO (R_VISIUM_32_PCREL, /* 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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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_VISIUM_32_PCREL", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 16-bit PC word relative offset, relative to start of instruction
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and always in the second half of the instruction. */
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HOWTO (R_VISIUM_PC16, /* type */
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2, /* 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_signed, /* complain_on_overflow */
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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_PC16", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* The high 16 bits of symbol value. */
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HOWTO (R_VISIUM_HI16, /* 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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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_HI16", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The low 16 bits of symbol value. */
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HOWTO (R_VISIUM_LO16, /* 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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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_LO16", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 16 bit immediate value. */
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HOWTO (R_VISIUM_IM16, /* 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_unsigned, /* complain_on_overflow */
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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_IM16", /* name */
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FALSE, /* partial_inplace */
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0x0000000, /* src_mask */
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0x000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The high 16 bits of symbol value, pc relative. */
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HOWTO (R_VISIUM_HI16_PCREL, /* 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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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_HI16_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* The low 16 bits of symbol value, pc relative. */
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HOWTO (R_VISIUM_LO16_PCREL, /* 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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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_LO16_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 16 bit immediate value, pc relative. */
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HOWTO (R_VISIUM_IM16_PCREL, /* 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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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_unsigned, /* complain_on_overflow */
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visium_elf_howto_parity_reloc, /* special_function */
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"R_VISIUM_IM16_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x0000000, /* src_mask */
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0x000ffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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};
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/* GNU extension to record C++ vtable hierarchy. */
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static reloc_howto_type visium_elf_vtinherit_howto =
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HOWTO (R_VISIUM_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_VISIUM_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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static reloc_howto_type visium_elf_vtentry_howto =
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HOWTO (R_VISIUM_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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NULL, /* special_function */
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"R_VISIUM_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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/* Return the parity bit for INSN shifted to its final position. */
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static bfd_vma
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visium_parity_bit (bfd_vma insn)
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{
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bfd_vma p = 0;
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int i;
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for (i = 0; i < 31; i++)
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{
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p ^= (insn & 1);
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insn >>= 1;
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}
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return p << 31;
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}
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/* This "special function" will only be used when the input and
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output files have different formats ie. when generating S-records
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directly using "--oformat srec". Otherwise we use
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_bfd_final_link_relocate which uses a howto structure, but does
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not use the special_function field.
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It sets instruction parity to even. This cannot be done by a howto. */
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static bfd_reloc_status_type
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visium_elf_howto_parity_reloc (bfd * input_bfd, arelent *reloc_entry,
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asymbol *symbol, PTR data,
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asection *input_section, bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_reloc_status_type ret;
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bfd_vma relocation;
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bfd_byte *inplace_address;
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bfd_vma insn;
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const bfd_vma signmask = 0xffff8000;
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/* This part is from bfd_elf_generic_reloc.
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If we're relocating, and this an external symbol, we don't want
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to change anything. */
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if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0)
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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/* Now do the reloc in the usual way. */
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/* Sanity check the address (offset in section). */
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if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
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return bfd_reloc_outofrange;
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ret = bfd_reloc_ok;
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if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
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ret = bfd_reloc_undefined;
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if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
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relocation = 0;
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else
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relocation = symbol->value;
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/* Only do this for a final link. */
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if (output_bfd == (bfd *) NULL)
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{
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relocation += symbol->section->output_section->vma;
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relocation += symbol->section->output_offset;
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}
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relocation += reloc_entry->addend;
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inplace_address = (bfd_byte *) data + reloc_entry->address;
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insn = bfd_get_32 (input_bfd, inplace_address);
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if (reloc_entry->howto->pc_relative)
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{
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relocation -= input_section->output_section->vma
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+ input_section->output_offset;
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relocation -= reloc_entry->address;
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}
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switch (reloc_entry->howto->type)
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{
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case R_VISIUM_PC16:
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relocation >>= 2;
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if (ret == bfd_reloc_ok && (relocation & signmask) != 0
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&& (relocation & signmask) != signmask)
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ret = bfd_reloc_overflow;
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relocation &= 0xffff;
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break;
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case R_VISIUM_HI16:
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case R_VISIUM_HI16_PCREL:
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relocation = (relocation >> 16) & 0xffff;
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break;
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case R_VISIUM_LO16:
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case R_VISIUM_LO16_PCREL:
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relocation &= 0xffff;
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break;
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case R_VISIUM_IM16:
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case R_VISIUM_IM16_PCREL:
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if (ret == bfd_reloc_ok && (relocation & 0xffff0000) != 0)
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ret = bfd_reloc_overflow;
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relocation &= 0xffff;
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break;
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}
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insn = (insn & 0x7fff0000) | relocation;
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insn |= visium_parity_bit (insn);
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bfd_put_32 (input_bfd, insn, inplace_address);
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if (output_bfd != (bfd *) NULL)
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reloc_entry->address += input_section->output_offset;
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return ret;
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}
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static reloc_howto_type *
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visium_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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{
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/* Note that the visium_elf_howto_table is indexed by the R_
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constants. Thus, the order that the howto records appear in the
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table *must* match the order of the relocation types defined in
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include/elf/visium.h. */
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switch (code)
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{
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case BFD_RELOC_NONE:
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return &visium_elf_howto_table[(int) R_VISIUM_NONE];
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case BFD_RELOC_8:
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return &visium_elf_howto_table[(int) R_VISIUM_8];
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case BFD_RELOC_16:
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return &visium_elf_howto_table[(int) R_VISIUM_16];
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case BFD_RELOC_32:
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return &visium_elf_howto_table[(int) R_VISIUM_32];
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case BFD_RELOC_8_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_8_PCREL];
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case BFD_RELOC_16_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_16_PCREL];
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case BFD_RELOC_32_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_32_PCREL];
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case BFD_RELOC_VISIUM_REL16:
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return &visium_elf_howto_table[(int) R_VISIUM_PC16];
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case BFD_RELOC_VISIUM_HI16:
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return &visium_elf_howto_table[(int) R_VISIUM_HI16];
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case BFD_RELOC_VISIUM_LO16:
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return &visium_elf_howto_table[(int) R_VISIUM_LO16];
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case BFD_RELOC_VISIUM_IM16:
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return &visium_elf_howto_table[(int) R_VISIUM_IM16];
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case BFD_RELOC_VISIUM_HI16_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_HI16_PCREL];
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case BFD_RELOC_VISIUM_LO16_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_LO16_PCREL];
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case BFD_RELOC_VISIUM_IM16_PCREL:
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return &visium_elf_howto_table[(int) R_VISIUM_IM16_PCREL];
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case BFD_RELOC_VTABLE_INHERIT:
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return &visium_elf_vtinherit_howto;
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case BFD_RELOC_VTABLE_ENTRY:
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return &visium_elf_vtentry_howto;
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default:
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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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visium_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
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{
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unsigned int i;
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for (i = 0;
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i < (sizeof (visium_elf_howto_table)
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/ sizeof (visium_elf_howto_table[0])); i++)
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if (visium_elf_howto_table[i].name != NULL
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&& strcasecmp (visium_elf_howto_table[i].name, r_name) == 0)
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return &visium_elf_howto_table[i];
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|
|
if (strcasecmp (visium_elf_vtinherit_howto.name, r_name) == 0)
|
|
return &visium_elf_vtinherit_howto;
|
|
if (strcasecmp (visium_elf_vtentry_howto.name, r_name) == 0)
|
|
return &visium_elf_vtentry_howto;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Set the howto pointer for a VISIUM ELF reloc. */
|
|
|
|
static bfd_boolean
|
|
visium_info_to_howto_rela (bfd *abfd, arelent *cache_ptr,
|
|
Elf_Internal_Rela *dst)
|
|
{
|
|
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_VISIUM_GNU_VTINHERIT:
|
|
cache_ptr->howto = &visium_elf_vtinherit_howto;
|
|
break;
|
|
|
|
case R_VISIUM_GNU_VTENTRY:
|
|
cache_ptr->howto = &visium_elf_vtentry_howto;
|
|
break;
|
|
|
|
default:
|
|
if (r_type >= ARRAY_SIZE (visium_elf_howto_table))
|
|
{
|
|
/* xgettext:c-format */
|
|
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
|
|
abfd, r_type);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
cache_ptr->howto = &visium_elf_howto_table[r_type];
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* 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
|
|
virtual table relocs for gc. */
|
|
|
|
static bfd_boolean
|
|
visium_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
|
asection *sec, const Elf_Internal_Rela *relocs)
|
|
{
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
const Elf_Internal_Rela *rel;
|
|
const Elf_Internal_Rela *rel_end;
|
|
|
|
if (bfd_link_relocatable (info))
|
|
return TRUE;
|
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
|
sym_hashes = elf_sym_hashes (abfd);
|
|
|
|
rel_end = relocs + sec->reloc_count;
|
|
for (rel = relocs; rel < rel_end; rel++)
|
|
{
|
|
struct elf_link_hash_entry *h;
|
|
unsigned long r_symndx;
|
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
h = NULL;
|
|
else
|
|
{
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
}
|
|
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
|
{
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
|
Reconstruct it for later use during GC. */
|
|
case R_VISIUM_GNU_VTINHERIT:
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
|
return FALSE;
|
|
break;
|
|
|
|
/* This relocation describes which C++ vtable entries are actually
|
|
used. Record for later use during GC. */
|
|
case R_VISIUM_GNU_VTENTRY:
|
|
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Relocate a VISIUM ELF section. */
|
|
|
|
static bfd_boolean
|
|
visium_elf_relocate_section (bfd *output_bfd,
|
|
struct bfd_link_info *info, bfd *input_bfd,
|
|
asection *input_section, bfd_byte *contents,
|
|
Elf_Internal_Rela *relocs,
|
|
Elf_Internal_Sym *local_syms,
|
|
asection **local_sections)
|
|
{
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
Elf_Internal_Rela *rel;
|
|
Elf_Internal_Rela *relend;
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
|
relend = relocs + input_section->reloc_count;
|
|
|
|
for (rel = relocs; rel < relend; rel++)
|
|
{
|
|
reloc_howto_type *howto;
|
|
unsigned long r_symndx;
|
|
Elf_Internal_Sym *sym;
|
|
asection *sec;
|
|
struct elf_link_hash_entry *h;
|
|
bfd_vma relocation;
|
|
bfd_reloc_status_type r;
|
|
const char *name = NULL;
|
|
int r_type;
|
|
bfd_vma insn;
|
|
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
|
|
|
if (r_type == R_VISIUM_GNU_VTINHERIT || r_type == R_VISIUM_GNU_VTENTRY)
|
|
continue;
|
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
|
|
howto = visium_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
|
h = NULL;
|
|
sym = NULL;
|
|
sec = NULL;
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
{
|
|
/* This is a local symbol. */
|
|
sym = local_syms + r_symndx;
|
|
sec = local_sections[r_symndx];
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
|
|
|
name = bfd_elf_string_from_elf_section
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
|
}
|
|
else
|
|
{
|
|
bfd_boolean unresolved_reloc;
|
|
bfd_boolean warned, ignored;
|
|
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
|
r_symndx, symtab_hdr, sym_hashes,
|
|
h, sec, relocation,
|
|
unresolved_reloc, warned, ignored);
|
|
|
|
name = h->root.root.string;
|
|
}
|
|
|
|
if (sec != NULL && discarded_section (sec))
|
|
{
|
|
/* For relocs against symbols from removed linkonce sections,
|
|
or sections discarded by a linker script, we just want the
|
|
section contents zeroed. Avoid any special processing. */
|
|
_bfd_clear_contents (howto, input_bfd, input_section,
|
|
contents + rel->r_offset);
|
|
|
|
rel->r_info = 0;
|
|
rel->r_addend = 0;
|
|
continue;
|
|
}
|
|
|
|
if (bfd_link_relocatable (info))
|
|
continue;
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_VISIUM_PC16:
|
|
case R_VISIUM_HI16:
|
|
case R_VISIUM_LO16:
|
|
case R_VISIUM_IM16:
|
|
case R_VISIUM_HI16_PCREL:
|
|
case R_VISIUM_LO16_PCREL:
|
|
case R_VISIUM_IM16_PCREL:
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
|
contents, rel->r_offset,
|
|
relocation, rel->r_addend);
|
|
|
|
/* For instruction relocations, the parity needs correcting. */
|
|
if (r == bfd_reloc_ok)
|
|
{
|
|
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
|
insn = (insn & 0x7fffffff) | visium_parity_bit (insn);
|
|
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
|
contents, rel->r_offset,
|
|
relocation, rel->r_addend);
|
|
break;
|
|
}
|
|
|
|
if (r != bfd_reloc_ok)
|
|
{
|
|
const char *msg = (const char *) NULL;
|
|
|
|
switch (r)
|
|
{
|
|
case bfd_reloc_overflow:
|
|
(*info->callbacks->reloc_overflow)
|
|
(info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
|
|
input_bfd, input_section, rel->r_offset);
|
|
break;
|
|
|
|
case bfd_reloc_undefined:
|
|
(*info->callbacks->undefined_symbol)
|
|
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
|
|
break;
|
|
|
|
case bfd_reloc_outofrange:
|
|
msg = _("internal error: out of range error");
|
|
break;
|
|
|
|
case bfd_reloc_notsupported:
|
|
msg = _("internal error: unsupported relocation error");
|
|
break;
|
|
|
|
case bfd_reloc_dangerous:
|
|
msg = _("internal error: dangerous relocation");
|
|
break;
|
|
|
|
default:
|
|
msg = _("internal error: unknown error");
|
|
break;
|
|
}
|
|
|
|
if (msg)
|
|
(*info->callbacks->warning) (info, msg, name, input_bfd,
|
|
input_section, rel->r_offset);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* This function is called during section gc to discover the section a
|
|
to which a particular relocation refers. Return the section that
|
|
should be marked against GC for a given relocation. */
|
|
|
|
static asection *
|
|
visium_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
|
|
Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
|
|
Elf_Internal_Sym *sym)
|
|
{
|
|
if (h != NULL)
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
|
{
|
|
case R_VISIUM_GNU_VTINHERIT:
|
|
case R_VISIUM_GNU_VTENTRY:
|
|
return NULL;
|
|
}
|
|
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
|
}
|
|
|
|
static void
|
|
visium_elf_post_process_headers (bfd *abfd,
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
|
{
|
|
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
|
|
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE;
|
|
i_ehdrp->e_ident[EI_ABIVERSION] = 1;
|
|
}
|
|
|
|
/* Function to set the ELF flag bits. */
|
|
|
|
static bfd_boolean
|
|
visium_elf_set_private_flags (bfd *abfd, flagword flags)
|
|
{
|
|
elf_elfheader (abfd)->e_flags = flags;
|
|
elf_flags_init (abfd) = TRUE;
|
|
return TRUE;
|
|
}
|
|
|
|
/* Copy backend specific data from one object module to another. */
|
|
|
|
static bfd_boolean
|
|
visium_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
|
|
{
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
|
return TRUE;
|
|
|
|
BFD_ASSERT (!elf_flags_init (obfd)
|
|
|| elf_elfheader (obfd)->e_flags ==
|
|
elf_elfheader (ibfd)->e_flags);
|
|
|
|
elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
|
|
elf_flags_init (obfd) = TRUE;
|
|
|
|
/* Copy object attributes. */
|
|
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Merge backend specific data from an object
|
|
file to the output object file when linking. */
|
|
|
|
static bfd_boolean
|
|
visium_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
|
|
{
|
|
bfd *obfd = info->output_bfd;
|
|
flagword old_flags;
|
|
flagword new_flags;
|
|
flagword mismatch;
|
|
const char *opt_arch = NULL;
|
|
const char *new_opt_with = NULL;
|
|
const char *old_opt_with = NULL;
|
|
const char *with = "with";
|
|
const char *without = "without";
|
|
const char *mcm = "mcm";
|
|
const char *mcm24 = "mcm24";
|
|
const char *gr6 = "gr6";
|
|
|
|
new_flags = elf_elfheader (ibfd)->e_flags;
|
|
old_flags = elf_elfheader (obfd)->e_flags;
|
|
|
|
if (!elf_flags_init (obfd))
|
|
{
|
|
/* First call, no flags set. */
|
|
elf_flags_init (obfd) = TRUE;
|
|
elf_elfheader (obfd)->e_flags = new_flags;
|
|
}
|
|
else
|
|
{
|
|
mismatch = (new_flags ^ old_flags)
|
|
& (EF_VISIUM_ARCH_MCM | EF_VISIUM_ARCH_MCM24 | EF_VISIUM_ARCH_GR6);
|
|
if (mismatch & EF_VISIUM_ARCH_GR6)
|
|
{
|
|
opt_arch = gr6;
|
|
new_opt_with = new_flags & EF_VISIUM_ARCH_GR6 ? with : without;
|
|
old_opt_with = old_flags & EF_VISIUM_ARCH_GR6 ? with : without;
|
|
}
|
|
else if (mismatch & EF_VISIUM_ARCH_MCM)
|
|
{
|
|
opt_arch = mcm;
|
|
new_opt_with = new_flags & EF_VISIUM_ARCH_MCM ? with : without;
|
|
old_opt_with = old_flags & EF_VISIUM_ARCH_MCM ? with : without;
|
|
}
|
|
else if (mismatch & EF_VISIUM_ARCH_MCM24)
|
|
{
|
|
opt_arch = mcm24;
|
|
new_opt_with = new_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
|
|
old_opt_with = old_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
|
|
}
|
|
|
|
if (mismatch)
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: compiled %s -mtune=%s and linked with modules"
|
|
" compiled %s -mtune=%s"),
|
|
ibfd, new_opt_with, opt_arch, old_opt_with, opt_arch);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
visium_elf_print_private_bfd_data (bfd *abfd, void *ptr)
|
|
{
|
|
FILE *file = (FILE *) ptr;
|
|
flagword flags;
|
|
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
|
|
|
/* Print normal ELF private data. */
|
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
|
|
|
flags = elf_elfheader (abfd)->e_flags;
|
|
fprintf (file, _("private flags = 0x%lx:"), (long) flags);
|
|
|
|
if (flags & EF_VISIUM_ARCH_GR6)
|
|
fprintf (file, " -mtune=gr6");
|
|
else if (flags & EF_VISIUM_ARCH_MCM)
|
|
fprintf (file, " -mtune=mcm");
|
|
else if (flags & EF_VISIUM_ARCH_MCM24)
|
|
fprintf (file, " -mtune=mcm24");
|
|
|
|
fputc ('\n', file);
|
|
return TRUE;
|
|
}
|
|
|
|
#define ELF_ARCH bfd_arch_visium
|
|
#define ELF_MACHINE_CODE EM_VISIUM
|
|
#define ELF_MAXPAGESIZE 1
|
|
|
|
#define TARGET_BIG_SYM visium_elf32_vec
|
|
#define TARGET_BIG_NAME "elf32-visium"
|
|
|
|
#define elf_info_to_howto_rel NULL
|
|
#define elf_info_to_howto visium_info_to_howto_rela
|
|
#define elf_backend_relocate_section visium_elf_relocate_section
|
|
#define elf_backend_gc_mark_hook visium_elf_gc_mark_hook
|
|
#define elf_backend_check_relocs visium_elf_check_relocs
|
|
#define elf_backend_rela_normal 1
|
|
|
|
#define elf_backend_can_gc_sections 1
|
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup visium_reloc_type_lookup
|
|
#define bfd_elf32_bfd_reloc_name_lookup visium_reloc_name_lookup
|
|
|
|
#define bfd_elf32_bfd_set_private_flags visium_elf_set_private_flags
|
|
#define bfd_elf32_bfd_copy_private_bfd_data visium_elf_copy_private_bfd_data
|
|
#define bfd_elf32_bfd_merge_private_bfd_data visium_elf_merge_private_bfd_data
|
|
#define bfd_elf32_bfd_print_private_bfd_data visium_elf_print_private_bfd_data
|
|
#define elf_backend_post_process_headers visium_elf_post_process_headers
|
|
|
|
#include "elf32-target.h"
|