/* M16C/M32C specific support for 32-bit ELF.
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/* M16C/M32C specific support for 32-bit ELF.
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Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
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Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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/m32c.h"
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#include "elf/m32c.h"
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#include "libiberty.h"
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#include "libiberty.h"
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/* Forward declarations. */
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/* Forward declarations. */
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static reloc_howto_type * m32c_reloc_type_lookup
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static reloc_howto_type * m32c_reloc_type_lookup
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(bfd *, bfd_reloc_code_real_type);
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(bfd *, bfd_reloc_code_real_type);
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static void m32c_info_to_howto_rela
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static void m32c_info_to_howto_rela
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(bfd *, arelent *, Elf_Internal_Rela *);
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(bfd *, arelent *, Elf_Internal_Rela *);
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static bfd_boolean m32c_elf_relocate_section
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static bfd_boolean m32c_elf_relocate_section
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(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
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(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
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static bfd_boolean m32c_elf_check_relocs
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static bfd_boolean m32c_elf_check_relocs
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(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
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(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
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static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
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static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
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#ifdef DEBUG
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#ifdef DEBUG
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char * m32c_get_reloc (long reloc);
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char * m32c_get_reloc (long reloc);
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void dump_symtab (bfd *, void *, void *);
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void dump_symtab (bfd *, void *, void *);
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#endif
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#endif
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static bfd_boolean m32c_elf_relax_section
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static bfd_boolean m32c_elf_relax_section
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(bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again);
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(bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again);
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static reloc_howto_type m32c_elf_howto_table [] =
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static reloc_howto_type m32c_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_M32C_NONE, /* type */
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HOWTO (R_M32C_NONE, /* 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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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_M32C_NONE", /* name */
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"R_M32C_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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/* GCC intentionally overflows these next two in order to work
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/* GCC intentionally overflows these next two in order to work
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around limitations in the addressing modes, so don't complain
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around limitations in the addressing modes, so don't complain
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about overflow. */
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about overflow. */
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HOWTO (R_M32C_16, /* type */
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HOWTO (R_M32C_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_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_M32C_16", /* name */
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"R_M32C_16", /* 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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0xffff, /* dst_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_24, /* type */
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HOWTO (R_M32C_24, /* 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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24, /* bitsize */
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24, /* 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_M32C_24", /* name */
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"R_M32C_24", /* 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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0xffffff, /* dst_mask */
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0xffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_32, /* type */
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HOWTO (R_M32C_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_M32C_32", /* name */
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"R_M32C_32", /* 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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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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HOWTO (R_M32C_8_PCREL, /* type */
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HOWTO (R_M32C_8_PCREL, /* 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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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_M32C_8_PCREL", /* name */
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"R_M32C_8_PCREL", /* 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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0xff, /* dst_mask */
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0xff, /* dst_mask */
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TRUE), /* pcrel_offset */
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TRUE), /* pcrel_offset */
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HOWTO (R_M32C_16_PCREL, /* type */
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HOWTO (R_M32C_16_PCREL, /* 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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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_M32C_16_PCREL", /* name */
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"R_M32C_16_PCREL", /* 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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0xffff, /* dst_mask */
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0xffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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TRUE), /* pcrel_offset */
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HOWTO (R_M32C_8, /* type */
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HOWTO (R_M32C_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_unsigned, /* complain_on_overflow */
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complain_overflow_unsigned, /* 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_M32C_8", /* name */
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"R_M32C_8", /* 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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0xff, /* dst_mask */
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0xff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_LO16, /* type */
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HOWTO (R_M32C_LO16, /* 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_M32C_LO16", /* name */
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"R_M32C_LO16", /* 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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0xffff, /* dst_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_HI8, /* type */
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HOWTO (R_M32C_HI8, /* 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_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_M32C_HI8", /* name */
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"R_M32C_HI8", /* 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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0xff, /* dst_mask */
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0xff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_HI16, /* type */
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HOWTO (R_M32C_HI16, /* 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_M32C_HI16", /* name */
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"R_M32C_HI16", /* 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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0xffff, /* dst_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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FALSE), /* pcrel_offset */
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HOWTO (R_M32C_RL_JUMP, /* type */
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HOWTO (R_M32C_RL_JUMP, /* 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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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_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_M32C_RL_JUMP", /* name */
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"R_M32C_RL_JUMP", /* 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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HOWTO (R_M32C_RL_1ADDR, /* type */
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HOWTO (R_M32C_RL_1ADDR, /* 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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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_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_M32C_RL_1ADDR", /* name */
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"R_M32C_RL_1ADDR", /* 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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HOWTO (R_M32C_RL_2ADDR, /* type */
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HOWTO (R_M32C_RL_2ADDR, /* 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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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_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_M32C_RL_2ADDR", /* name */
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"R_M32C_RL_2ADDR", /* 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 M32C ELF reloc types. */
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/* Map BFD reloc types to M32C ELF reloc types. */
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struct m32c_reloc_map
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struct m32c_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 m32c_reloc_val;
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unsigned int m32c_reloc_val;
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};
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};
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static const struct m32c_reloc_map m32c_reloc_map [] =
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static const struct m32c_reloc_map m32c_reloc_map [] =
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{
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{
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{ BFD_RELOC_NONE, R_M32C_NONE },
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{ BFD_RELOC_NONE, R_M32C_NONE },
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{ BFD_RELOC_16, R_M32C_16 },
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{ BFD_RELOC_16, R_M32C_16 },
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{ BFD_RELOC_24, R_M32C_24 },
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{ BFD_RELOC_24, R_M32C_24 },
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{ BFD_RELOC_32, R_M32C_32 },
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{ BFD_RELOC_32, R_M32C_32 },
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{ BFD_RELOC_8_PCREL, R_M32C_8_PCREL },
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{ BFD_RELOC_8_PCREL, R_M32C_8_PCREL },
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{ BFD_RELOC_16_PCREL, R_M32C_16_PCREL },
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{ BFD_RELOC_16_PCREL, R_M32C_16_PCREL },
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{ BFD_RELOC_8, R_M32C_8 },
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{ BFD_RELOC_8, R_M32C_8 },
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{ BFD_RELOC_LO16, R_M32C_LO16 },
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{ BFD_RELOC_LO16, R_M32C_LO16 },
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{ BFD_RELOC_HI16, R_M32C_HI16 },
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{ BFD_RELOC_HI16, R_M32C_HI16 },
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{ BFD_RELOC_M32C_HI8, R_M32C_HI8 },
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{ BFD_RELOC_M32C_HI8, R_M32C_HI8 },
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{ BFD_RELOC_M32C_RL_JUMP, R_M32C_RL_JUMP },
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{ BFD_RELOC_M32C_RL_JUMP, R_M32C_RL_JUMP },
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{ BFD_RELOC_M32C_RL_1ADDR, R_M32C_RL_1ADDR },
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{ BFD_RELOC_M32C_RL_1ADDR, R_M32C_RL_1ADDR },
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{ BFD_RELOC_M32C_RL_2ADDR, R_M32C_RL_2ADDR }
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{ BFD_RELOC_M32C_RL_2ADDR, R_M32C_RL_2ADDR }
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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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m32c_reloc_type_lookup
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m32c_reloc_type_lookup
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(bfd * abfd ATTRIBUTE_UNUSED,
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(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 (m32c_reloc_map); --i;)
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for (i = ARRAY_SIZE (m32c_reloc_map); --i;)
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if (m32c_reloc_map [i].bfd_reloc_val == code)
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if (m32c_reloc_map [i].bfd_reloc_val == code)
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return & m32c_elf_howto_table [m32c_reloc_map[i].m32c_reloc_val];
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return & m32c_elf_howto_table [m32c_reloc_map[i].m32c_reloc_val];
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
static reloc_howto_type *
|
static reloc_howto_type *
|
m32c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
m32c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
{
|
{
|
unsigned int i;
|
unsigned int i;
|
|
|
for (i = 0;
|
for (i = 0;
|
i < sizeof (m32c_elf_howto_table) / sizeof (m32c_elf_howto_table[0]);
|
i < sizeof (m32c_elf_howto_table) / sizeof (m32c_elf_howto_table[0]);
|
i++)
|
i++)
|
if (m32c_elf_howto_table[i].name != NULL
|
if (m32c_elf_howto_table[i].name != NULL
|
&& strcasecmp (m32c_elf_howto_table[i].name, r_name) == 0)
|
&& strcasecmp (m32c_elf_howto_table[i].name, r_name) == 0)
|
return &m32c_elf_howto_table[i];
|
return &m32c_elf_howto_table[i];
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* Set the howto pointer for an M32C ELF reloc. */
|
/* Set the howto pointer for an M32C ELF reloc. */
|
|
|
static void
|
static void
|
m32c_info_to_howto_rela
|
m32c_info_to_howto_rela
|
(bfd * abfd ATTRIBUTE_UNUSED,
|
(bfd * abfd ATTRIBUTE_UNUSED,
|
arelent * cache_ptr,
|
arelent * cache_ptr,
|
Elf_Internal_Rela * dst)
|
Elf_Internal_Rela * dst)
|
{
|
{
|
unsigned int r_type;
|
unsigned int r_type;
|
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
r_type = ELF32_R_TYPE (dst->r_info);
|
BFD_ASSERT (r_type < (unsigned int) R_M32C_max);
|
BFD_ASSERT (r_type < (unsigned int) R_M32C_max);
|
cache_ptr->howto = & m32c_elf_howto_table [r_type];
|
cache_ptr->howto = & m32c_elf_howto_table [r_type];
|
}
|
}
|
|
|
|
|
|
|
/* Relocate an M32C ELF section.
|
/* Relocate an M32C ELF section.
|
There is some attempt to make this function usable for many architectures,
|
There is some attempt to make this function usable for many architectures,
|
both USE_REL and USE_RELA ['twould be nice if such a critter existed],
|
both USE_REL and USE_RELA ['twould be nice if such a critter existed],
|
if only to serve as a learning tool.
|
if only to serve as a learning tool.
|
|
|
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
|
m32c_elf_relocate_section
|
m32c_elf_relocate_section
|
(bfd * output_bfd ATTRIBUTE_UNUSED,
|
(bfd * output_bfd ATTRIBUTE_UNUSED,
|
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;
|
bfd *dynobj;
|
bfd *dynobj;
|
asection *splt;
|
asection *splt;
|
|
|
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;
|
|
|
dynobj = elf_hash_table (info)->dynobj;
|
dynobj = elf_hash_table (info)->dynobj;
|
splt = NULL;
|
splt = NULL;
|
if (dynobj != NULL)
|
if (dynobj != NULL)
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
|
|
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);
|
|
|
/* These are only used for relaxing; we don't actually relocate
|
/* These are only used for relaxing; we don't actually relocate
|
anything with them, so skip them. */
|
anything with them, so skip them. */
|
if (r_type == R_M32C_RL_JUMP
|
if (r_type == R_M32C_RL_JUMP
|
|| r_type == R_M32C_RL_1ADDR
|
|| r_type == R_M32C_RL_1ADDR
|
|| r_type == R_M32C_RL_2ADDR)
|
|| r_type == R_M32C_RL_2ADDR)
|
continue;
|
continue;
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
|
howto = m32c_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
howto = m32c_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
h = NULL;
|
h = NULL;
|
sym = NULL;
|
sym = NULL;
|
sec = NULL;
|
sec = NULL;
|
relocation = 0;
|
relocation = 0;
|
|
|
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 = (sec->output_section->vma
|
relocation = (sec->output_section->vma
|
+ sec->output_offset
|
+ sec->output_offset
|
+ sym->st_value);
|
+ sym->st_value);
|
|
|
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 = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name;
|
name = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name;
|
}
|
}
|
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;
|
|
|
name = h->root.root.string;
|
name = h->root.root.string;
|
|
|
if (h->root.type == bfd_link_hash_defined
|
if (h->root.type == bfd_link_hash_defined
|
|| h->root.type == bfd_link_hash_defweak)
|
|| h->root.type == bfd_link_hash_defweak)
|
{
|
{
|
sec = h->root.u.def.section;
|
sec = h->root.u.def.section;
|
relocation = (h->root.u.def.value
|
relocation = (h->root.u.def.value
|
+ sec->output_section->vma
|
+ sec->output_section->vma
|
+ sec->output_offset);
|
+ sec->output_offset);
|
}
|
}
|
else if (h->root.type == bfd_link_hash_undefweak)
|
else if (h->root.type == bfd_link_hash_undefweak)
|
;
|
;
|
else if (!info->relocatable)
|
else if (!info->relocatable)
|
{
|
{
|
if (! ((*info->callbacks->undefined_symbol)
|
if (! ((*info->callbacks->undefined_symbol)
|
(info, h->root.root.string, input_bfd,
|
(info, h->root.root.string, input_bfd,
|
input_section, rel->r_offset, TRUE)))
|
input_section, rel->r_offset, TRUE)))
|
return FALSE;
|
return FALSE;
|
}
|
}
|
}
|
}
|
|
|
if (sec != NULL && elf_discarded_section (sec))
|
if (sec != NULL && elf_discarded_section (sec))
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
rel, relend, howto, contents);
|
rel, relend, howto, contents);
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
{
|
{
|
/* This is a relocatable link. We don't have to change
|
/* This is a relocatable link. We don't have to change
|
anything, unless the reloc is against a section symbol,
|
anything, unless the reloc is against a section symbol,
|
in which case we have to adjust according to where the
|
in which case we have to adjust according to where the
|
section symbol winds up in the output section. */
|
section symbol winds up in the output section. */
|
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
rel->r_addend += sec->output_offset;
|
rel->r_addend += sec->output_offset;
|
continue;
|
continue;
|
}
|
}
|
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
switch (ELF32_R_TYPE (rel->r_info))
|
{
|
{
|
case R_M32C_16:
|
case R_M32C_16:
|
{
|
{
|
bfd_vma *plt_offset;
|
bfd_vma *plt_offset;
|
|
|
if (h != NULL)
|
if (h != NULL)
|
plt_offset = &h->plt.offset;
|
plt_offset = &h->plt.offset;
|
else
|
else
|
plt_offset = elf_local_got_offsets (input_bfd) + r_symndx;
|
plt_offset = elf_local_got_offsets (input_bfd) + r_symndx;
|
|
|
/* printf("%s: rel %x plt %d\n", h ? h->root.root.string : "(none)",
|
/* printf("%s: rel %x plt %d\n", h ? h->root.root.string : "(none)",
|
relocation, *plt_offset);*/
|
relocation, *plt_offset);*/
|
if (relocation <= 0xffff)
|
if (relocation <= 0xffff)
|
{
|
{
|
/* If the symbol is in range for a 16-bit address, we should
|
/* If the symbol is in range for a 16-bit address, we should
|
have deallocated the plt entry in relax_section. */
|
have deallocated the plt entry in relax_section. */
|
BFD_ASSERT (*plt_offset == (bfd_vma) -1);
|
BFD_ASSERT (*plt_offset == (bfd_vma) -1);
|
}
|
}
|
else
|
else
|
{
|
{
|
/* If the symbol is out of range for a 16-bit address,
|
/* If the symbol is out of range for a 16-bit address,
|
we must have allocated a plt entry. */
|
we must have allocated a plt entry. */
|
BFD_ASSERT (*plt_offset != (bfd_vma) -1);
|
BFD_ASSERT (*plt_offset != (bfd_vma) -1);
|
|
|
/* If this is the first time we've processed this symbol,
|
/* If this is the first time we've processed this symbol,
|
fill in the plt entry with the correct symbol address. */
|
fill in the plt entry with the correct symbol address. */
|
if ((*plt_offset & 1) == 0)
|
if ((*plt_offset & 1) == 0)
|
{
|
{
|
unsigned int x;
|
unsigned int x;
|
|
|
x = 0x000000fc; /* jmpf */
|
x = 0x000000fc; /* jmpf */
|
x |= (relocation << 8) & 0xffffff00;
|
x |= (relocation << 8) & 0xffffff00;
|
bfd_put_32 (input_bfd, x, splt->contents + *plt_offset);
|
bfd_put_32 (input_bfd, x, splt->contents + *plt_offset);
|
*plt_offset |= 1;
|
*plt_offset |= 1;
|
}
|
}
|
|
|
relocation = (splt->output_section->vma
|
relocation = (splt->output_section->vma
|
+ splt->output_offset
|
+ splt->output_offset
|
+ (*plt_offset & -2));
|
+ (*plt_offset & -2));
|
if (name)
|
if (name)
|
{
|
{
|
char *newname = bfd_malloc (strlen(name)+5);
|
char *newname = bfd_malloc (strlen(name)+5);
|
strcpy (newname, name);
|
strcpy (newname, name);
|
strcat(newname, ".plt");
|
strcat(newname, ".plt");
|
_bfd_generic_link_add_one_symbol (info,
|
_bfd_generic_link_add_one_symbol (info,
|
input_bfd,
|
input_bfd,
|
newname,
|
newname,
|
BSF_FUNCTION | BSF_WEAK,
|
BSF_FUNCTION | BSF_WEAK,
|
splt,
|
splt,
|
(*plt_offset & -2),
|
(*plt_offset & -2),
|
0,
|
0,
|
1,
|
1,
|
0,
|
0,
|
0);
|
0);
|
}
|
}
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case R_M32C_HI8:
|
case R_M32C_HI8:
|
case R_M32C_HI16:
|
case R_M32C_HI16:
|
relocation >>= 16;
|
relocation >>= 16;
|
break;
|
break;
|
}
|
}
|
|
|
#if 0
|
#if 0
|
printf ("relocate %s at %06lx relocation %06lx addend %ld ",
|
printf ("relocate %s at %06lx relocation %06lx addend %ld ",
|
m32c_elf_howto_table[ELF32_R_TYPE(rel->r_info)].name,
|
m32c_elf_howto_table[ELF32_R_TYPE(rel->r_info)].name,
|
rel->r_offset + input_section->output_section->vma + input_section->output_offset,
|
rel->r_offset + input_section->output_section->vma + input_section->output_offset,
|
relocation, rel->r_addend);
|
relocation, rel->r_addend);
|
{
|
{
|
int i;
|
int i;
|
for (i=0; i<4; i++)
|
for (i=0; i<4; i++)
|
printf (" %02x", contents[rel->r_offset+i]);
|
printf (" %02x", contents[rel->r_offset+i]);
|
printf ("\n");
|
printf ("\n");
|
}
|
}
|
#endif
|
#endif
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
contents, rel->r_offset, relocation,
|
contents, rel->r_offset, relocation,
|
rel->r_addend);
|
rel->r_addend);
|
|
|
if (r != bfd_reloc_ok)
|
if (r != bfd_reloc_ok)
|
{
|
{
|
const char * msg = (const char *) NULL;
|
const char * msg = (const char *) 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, (bfd_vma) 0,
|
(info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
|
input_bfd, input_section, rel->r_offset);
|
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,
|
(info, name, input_bfd, input_section, rel->r_offset,
|
TRUE);
|
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;
|
}
|
}
|
|
|
/* We support 16-bit pointers to code above 64k by generating a thunk
|
/* We support 16-bit pointers to code above 64k by generating a thunk
|
below 64k containing a JMP instruction to the final address. */
|
below 64k containing a JMP instruction to the final address. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_check_relocs
|
m32c_elf_check_relocs
|
(bfd * abfd,
|
(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;
|
bfd_vma *local_plt_offsets;
|
bfd_vma *local_plt_offsets;
|
asection *splt;
|
asection *splt;
|
bfd *dynobj;
|
bfd *dynobj;
|
|
|
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);
|
local_plt_offsets = elf_local_got_offsets (abfd);
|
local_plt_offsets = elf_local_got_offsets (abfd);
|
splt = NULL;
|
splt = NULL;
|
dynobj = elf_hash_table(info)->dynobj;
|
dynobj = elf_hash_table(info)->dynobj;
|
|
|
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;
|
bfd_vma *offset;
|
bfd_vma *offset;
|
|
|
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 a 16-bit pointer to a function.
|
/* This relocation describes a 16-bit pointer to a function.
|
We may need to allocate a thunk in low memory; reserve memory
|
We may need to allocate a thunk in low memory; reserve memory
|
for it now. */
|
for it now. */
|
case R_M32C_16:
|
case R_M32C_16:
|
if (dynobj == NULL)
|
if (dynobj == NULL)
|
elf_hash_table (info)->dynobj = dynobj = abfd;
|
elf_hash_table (info)->dynobj = dynobj = abfd;
|
if (splt == NULL)
|
if (splt == NULL)
|
{
|
{
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
if (splt == NULL)
|
if (splt == NULL)
|
{
|
{
|
flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED
|
| SEC_READONLY | SEC_CODE);
|
| SEC_READONLY | SEC_CODE);
|
splt = bfd_make_section_with_flags (dynobj, ".plt", flags);
|
splt = bfd_make_section_with_flags (dynobj, ".plt", flags);
|
if (splt == NULL
|
if (splt == NULL
|
|| ! bfd_set_section_alignment (dynobj, splt, 1))
|
|| ! bfd_set_section_alignment (dynobj, splt, 1))
|
return FALSE;
|
return FALSE;
|
}
|
}
|
}
|
}
|
|
|
if (h != NULL)
|
if (h != NULL)
|
offset = &h->plt.offset;
|
offset = &h->plt.offset;
|
else
|
else
|
{
|
{
|
if (local_plt_offsets == NULL)
|
if (local_plt_offsets == NULL)
|
{
|
{
|
size_t size;
|
size_t size;
|
unsigned int i;
|
unsigned int i;
|
|
|
size = symtab_hdr->sh_info * sizeof (bfd_vma);
|
size = symtab_hdr->sh_info * sizeof (bfd_vma);
|
local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size);
|
local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size);
|
if (local_plt_offsets == NULL)
|
if (local_plt_offsets == NULL)
|
return FALSE;
|
return FALSE;
|
elf_local_got_offsets (abfd) = local_plt_offsets;
|
elf_local_got_offsets (abfd) = local_plt_offsets;
|
|
|
for (i = 0; i < symtab_hdr->sh_info; i++)
|
for (i = 0; i < symtab_hdr->sh_info; i++)
|
local_plt_offsets[i] = (bfd_vma) -1;
|
local_plt_offsets[i] = (bfd_vma) -1;
|
}
|
}
|
offset = &local_plt_offsets[r_symndx];
|
offset = &local_plt_offsets[r_symndx];
|
}
|
}
|
|
|
if (*offset == (bfd_vma) -1)
|
if (*offset == (bfd_vma) -1)
|
{
|
{
|
*offset = splt->size;
|
*offset = splt->size;
|
splt->size += 4;
|
splt->size += 4;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* This must exist if dynobj is ever set. */
|
/* This must exist if dynobj is ever set. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
|
m32c_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
|
struct bfd_link_info *info)
|
struct bfd_link_info *info)
|
{
|
{
|
bfd *dynobj;
|
bfd *dynobj;
|
asection *splt;
|
asection *splt;
|
|
|
/* As an extra sanity check, verify that all plt entries have
|
/* As an extra sanity check, verify that all plt entries have
|
been filled in. */
|
been filled in. */
|
|
|
if ((dynobj = elf_hash_table (info)->dynobj) != NULL
|
if ((dynobj = elf_hash_table (info)->dynobj) != NULL
|
&& (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL)
|
&& (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL)
|
{
|
{
|
bfd_byte *contents = splt->contents;
|
bfd_byte *contents = splt->contents;
|
unsigned int i, size = splt->size;
|
unsigned int i, size = splt->size;
|
for (i = 0; i < size; i += 4)
|
for (i = 0; i < size; i += 4)
|
{
|
{
|
unsigned int x = bfd_get_32 (dynobj, contents + i);
|
unsigned int x = bfd_get_32 (dynobj, contents + i);
|
BFD_ASSERT (x != 0);
|
BFD_ASSERT (x != 0);
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
m32c_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
struct bfd_link_info *info)
|
struct bfd_link_info *info)
|
{
|
{
|
bfd *dynobj;
|
bfd *dynobj;
|
asection *splt;
|
asection *splt;
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
return TRUE;
|
return TRUE;
|
|
|
dynobj = elf_hash_table (info)->dynobj;
|
dynobj = elf_hash_table (info)->dynobj;
|
if (dynobj == NULL)
|
if (dynobj == NULL)
|
return TRUE;
|
return TRUE;
|
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
BFD_ASSERT (splt != NULL);
|
BFD_ASSERT (splt != NULL);
|
|
|
splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size);
|
splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size);
|
if (splt->contents == NULL)
|
if (splt->contents == NULL)
|
return FALSE;
|
return FALSE;
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Function to set the ELF flag bits. */
|
/* Function to set the ELF flag bits. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_set_private_flags (bfd *abfd, flagword flags)
|
m32c_elf_set_private_flags (bfd *abfd, flagword flags)
|
{
|
{
|
elf_elfheader (abfd)->e_flags = flags;
|
elf_elfheader (abfd)->e_flags = flags;
|
elf_flags_init (abfd) = TRUE;
|
elf_flags_init (abfd) = TRUE;
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Merge backend specific data from an object file to the output
|
/* Merge backend specific data from an object file to the output
|
object file when linking. */
|
object file when linking. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
m32c_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
{
|
{
|
flagword old_flags, old_partial;
|
flagword old_flags, old_partial;
|
flagword new_flags, new_partial;
|
flagword new_flags, new_partial;
|
bfd_boolean error = FALSE;
|
bfd_boolean error = FALSE;
|
char new_opt[80];
|
char new_opt[80];
|
char old_opt[80];
|
char old_opt[80];
|
|
|
new_opt[0] = old_opt[0] = '\0';
|
new_opt[0] = old_opt[0] = '\0';
|
new_flags = elf_elfheader (ibfd)->e_flags;
|
new_flags = elf_elfheader (ibfd)->e_flags;
|
old_flags = elf_elfheader (obfd)->e_flags;
|
old_flags = elf_elfheader (obfd)->e_flags;
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
(*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
|
(*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
|
old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
|
old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
|
bfd_get_filename (ibfd));
|
bfd_get_filename (ibfd));
|
#endif
|
#endif
|
|
|
if (!elf_flags_init (obfd))
|
if (!elf_flags_init (obfd))
|
{
|
{
|
/* First call, no flags set. */
|
/* First call, no flags set. */
|
elf_flags_init (obfd) = TRUE;
|
elf_flags_init (obfd) = TRUE;
|
elf_elfheader (obfd)->e_flags = new_flags;
|
elf_elfheader (obfd)->e_flags = new_flags;
|
}
|
}
|
|
|
else if (new_flags == old_flags)
|
else if (new_flags == old_flags)
|
/* Compatible flags are ok. */
|
/* Compatible flags are ok. */
|
;
|
;
|
|
|
else /* Possibly incompatible flags. */
|
else /* Possibly incompatible flags. */
|
{
|
{
|
/* Warn if different cpu is used (allow a specific cpu to override
|
/* Warn if different cpu is used (allow a specific cpu to override
|
the generic cpu). */
|
the generic cpu). */
|
new_partial = (new_flags & EF_M32C_CPU_MASK);
|
new_partial = (new_flags & EF_M32C_CPU_MASK);
|
old_partial = (old_flags & EF_M32C_CPU_MASK);
|
old_partial = (old_flags & EF_M32C_CPU_MASK);
|
if (new_partial == old_partial)
|
if (new_partial == old_partial)
|
;
|
;
|
|
|
else
|
else
|
{
|
{
|
switch (new_partial)
|
switch (new_partial)
|
{
|
{
|
default: strcat (new_opt, " -m16c"); break;
|
default: strcat (new_opt, " -m16c"); break;
|
case EF_M32C_CPU_M16C: strcat (new_opt, " -m16c"); break;
|
case EF_M32C_CPU_M16C: strcat (new_opt, " -m16c"); break;
|
case EF_M32C_CPU_M32C: strcat (new_opt, " -m32c"); break;
|
case EF_M32C_CPU_M32C: strcat (new_opt, " -m32c"); break;
|
}
|
}
|
|
|
switch (old_partial)
|
switch (old_partial)
|
{
|
{
|
default: strcat (old_opt, " -m16c"); break;
|
default: strcat (old_opt, " -m16c"); break;
|
case EF_M32C_CPU_M16C: strcat (old_opt, " -m16c"); break;
|
case EF_M32C_CPU_M16C: strcat (old_opt, " -m16c"); break;
|
case EF_M32C_CPU_M32C: strcat (old_opt, " -m32c"); break;
|
case EF_M32C_CPU_M32C: strcat (old_opt, " -m32c"); break;
|
}
|
}
|
}
|
}
|
|
|
/* Print out any mismatches from above. */
|
/* Print out any mismatches from above. */
|
if (new_opt[0])
|
if (new_opt[0])
|
{
|
{
|
error = TRUE;
|
error = TRUE;
|
(*_bfd_error_handler)
|
(*_bfd_error_handler)
|
(_("%s: compiled with %s and linked with modules compiled with %s"),
|
(_("%s: compiled with %s and linked with modules compiled with %s"),
|
bfd_get_filename (ibfd), new_opt, old_opt);
|
bfd_get_filename (ibfd), new_opt, old_opt);
|
}
|
}
|
|
|
new_flags &= ~ EF_M32C_ALL_FLAGS;
|
new_flags &= ~ EF_M32C_ALL_FLAGS;
|
old_flags &= ~ EF_M32C_ALL_FLAGS;
|
old_flags &= ~ EF_M32C_ALL_FLAGS;
|
|
|
/* Warn about any other mismatches. */
|
/* Warn about any other mismatches. */
|
if (new_flags != old_flags)
|
if (new_flags != old_flags)
|
{
|
{
|
error = TRUE;
|
error = TRUE;
|
(*_bfd_error_handler)
|
(*_bfd_error_handler)
|
(_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
|
(_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
|
bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
|
bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
|
}
|
}
|
}
|
}
|
|
|
if (error)
|
if (error)
|
bfd_set_error (bfd_error_bad_value);
|
bfd_set_error (bfd_error_bad_value);
|
|
|
return !error;
|
return !error;
|
}
|
}
|
|
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_print_private_bfd_data (bfd *abfd, PTR ptr)
|
m32c_elf_print_private_bfd_data (bfd *abfd, PTR ptr)
|
{
|
{
|
FILE *file = (FILE *) ptr;
|
FILE *file = (FILE *) ptr;
|
flagword flags;
|
flagword flags;
|
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
|
|
/* Print normal ELF private data. */
|
/* Print normal ELF private data. */
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
|
|
flags = elf_elfheader (abfd)->e_flags;
|
flags = elf_elfheader (abfd)->e_flags;
|
fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
|
fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
|
|
|
switch (flags & EF_M32C_CPU_MASK)
|
switch (flags & EF_M32C_CPU_MASK)
|
{
|
{
|
default: break;
|
default: break;
|
case EF_M32C_CPU_M16C: fprintf (file, " -m16c"); break;
|
case EF_M32C_CPU_M16C: fprintf (file, " -m16c"); break;
|
case EF_M32C_CPU_M32C: fprintf (file, " -m32c"); break;
|
case EF_M32C_CPU_M32C: fprintf (file, " -m32c"); break;
|
}
|
}
|
|
|
fputc ('\n', file);
|
fputc ('\n', file);
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* Return the MACH for an e_flags value. */
|
/* Return the MACH for an e_flags value. */
|
|
|
static int
|
static int
|
elf32_m32c_machine (bfd *abfd)
|
elf32_m32c_machine (bfd *abfd)
|
{
|
{
|
switch (elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK)
|
switch (elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK)
|
{
|
{
|
case EF_M32C_CPU_M16C: return bfd_mach_m16c;
|
case EF_M32C_CPU_M16C: return bfd_mach_m16c;
|
case EF_M32C_CPU_M32C: return bfd_mach_m32c;
|
case EF_M32C_CPU_M32C: return bfd_mach_m32c;
|
}
|
}
|
|
|
return bfd_mach_m16c;
|
return bfd_mach_m16c;
|
}
|
}
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_object_p (bfd *abfd)
|
m32c_elf_object_p (bfd *abfd)
|
{
|
{
|
bfd_default_set_arch_mach (abfd, bfd_arch_m32c,
|
bfd_default_set_arch_mach (abfd, bfd_arch_m32c,
|
elf32_m32c_machine (abfd));
|
elf32_m32c_machine (abfd));
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
void
|
void
|
dump_symtab (bfd * abfd, void *internal_syms, void *external_syms)
|
dump_symtab (bfd * abfd, void *internal_syms, void *external_syms)
|
{
|
{
|
size_t locsymcount;
|
size_t locsymcount;
|
Elf_Internal_Sym *isymbuf;
|
Elf_Internal_Sym *isymbuf;
|
Elf_Internal_Sym *isymend;
|
Elf_Internal_Sym *isymend;
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
bfd_boolean free_internal = 0, free_external = 0;
|
bfd_boolean free_internal = 0, free_external = 0;
|
char * st_info_str;
|
char * st_info_str;
|
char * st_info_stb_str;
|
char * st_info_stb_str;
|
char * st_other_str;
|
char * st_other_str;
|
char * st_shndx_str;
|
char * st_shndx_str;
|
|
|
if (! internal_syms)
|
if (! internal_syms)
|
{
|
{
|
internal_syms = bfd_malloc (1000);
|
internal_syms = bfd_malloc (1000);
|
free_internal = 1;
|
free_internal = 1;
|
}
|
}
|
if (! external_syms)
|
if (! external_syms)
|
{
|
{
|
external_syms = bfd_malloc (1000);
|
external_syms = bfd_malloc (1000);
|
free_external = 1;
|
free_external = 1;
|
}
|
}
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
locsymcount = symtab_hdr->sh_size / get_elf_backend_data(abfd)->s->sizeof_sym;
|
locsymcount = symtab_hdr->sh_size / get_elf_backend_data(abfd)->s->sizeof_sym;
|
if (free_internal)
|
if (free_internal)
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
symtab_hdr->sh_info, 0,
|
symtab_hdr->sh_info, 0,
|
internal_syms, external_syms, NULL);
|
internal_syms, external_syms, NULL);
|
else
|
else
|
isymbuf = internal_syms;
|
isymbuf = internal_syms;
|
isymend = isymbuf + locsymcount;
|
isymend = isymbuf + locsymcount;
|
|
|
for (isym = isymbuf ; isym < isymend ; isym++)
|
for (isym = isymbuf ; isym < isymend ; isym++)
|
{
|
{
|
switch (ELF_ST_TYPE (isym->st_info))
|
switch (ELF_ST_TYPE (isym->st_info))
|
{
|
{
|
case STT_FUNC: st_info_str = "STT_FUNC";
|
case STT_FUNC: st_info_str = "STT_FUNC";
|
case STT_SECTION: st_info_str = "STT_SECTION";
|
case STT_SECTION: st_info_str = "STT_SECTION";
|
case STT_FILE: st_info_str = "STT_FILE";
|
case STT_FILE: st_info_str = "STT_FILE";
|
case STT_OBJECT: st_info_str = "STT_OBJECT";
|
case STT_OBJECT: st_info_str = "STT_OBJECT";
|
case STT_TLS: st_info_str = "STT_TLS";
|
case STT_TLS: st_info_str = "STT_TLS";
|
default: st_info_str = "";
|
default: st_info_str = "";
|
}
|
}
|
switch (ELF_ST_BIND (isym->st_info))
|
switch (ELF_ST_BIND (isym->st_info))
|
{
|
{
|
case STB_LOCAL: st_info_stb_str = "STB_LOCAL";
|
case STB_LOCAL: st_info_stb_str = "STB_LOCAL";
|
case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL";
|
case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL";
|
default: st_info_stb_str = "";
|
default: st_info_stb_str = "";
|
}
|
}
|
switch (ELF_ST_VISIBILITY (isym->st_other))
|
switch (ELF_ST_VISIBILITY (isym->st_other))
|
{
|
{
|
case STV_DEFAULT: st_other_str = "STV_DEFAULT";
|
case STV_DEFAULT: st_other_str = "STV_DEFAULT";
|
case STV_INTERNAL: st_other_str = "STV_INTERNAL";
|
case STV_INTERNAL: st_other_str = "STV_INTERNAL";
|
case STV_PROTECTED: st_other_str = "STV_PROTECTED";
|
case STV_PROTECTED: st_other_str = "STV_PROTECTED";
|
default: st_other_str = "";
|
default: st_other_str = "";
|
}
|
}
|
switch (isym->st_shndx)
|
switch (isym->st_shndx)
|
{
|
{
|
case SHN_ABS: st_shndx_str = "SHN_ABS";
|
case SHN_ABS: st_shndx_str = "SHN_ABS";
|
case SHN_COMMON: st_shndx_str = "SHN_COMMON";
|
case SHN_COMMON: st_shndx_str = "SHN_COMMON";
|
case SHN_UNDEF: st_shndx_str = "SHN_UNDEF";
|
case SHN_UNDEF: st_shndx_str = "SHN_UNDEF";
|
default: st_shndx_str = "";
|
default: st_shndx_str = "";
|
}
|
}
|
|
|
printf ("isym = %p st_value = %lx st_size = %lx st_name = (%lu) %s "
|
printf ("isym = %p st_value = %lx st_size = %lx st_name = (%lu) %s "
|
"st_info = (%d) %s %s st_other = (%d) %s st_shndx = (%d) %s\n",
|
"st_info = (%d) %s %s st_other = (%d) %s st_shndx = (%d) %s\n",
|
isym,
|
isym,
|
(unsigned long) isym->st_value,
|
(unsigned long) isym->st_value,
|
(unsigned long) isym->st_size,
|
(unsigned long) isym->st_size,
|
isym->st_name,
|
isym->st_name,
|
bfd_elf_string_from_elf_section (abfd, symtab_hdr->sh_link,
|
bfd_elf_string_from_elf_section (abfd, symtab_hdr->sh_link,
|
isym->st_name),
|
isym->st_name),
|
isym->st_info, st_info_str, st_info_stb_str,
|
isym->st_info, st_info_str, st_info_stb_str,
|
isym->st_other, st_other_str,
|
isym->st_other, st_other_str,
|
isym->st_shndx, st_shndx_str);
|
isym->st_shndx, st_shndx_str);
|
}
|
}
|
if (free_internal)
|
if (free_internal)
|
free (internal_syms);
|
free (internal_syms);
|
if (free_external)
|
if (free_external)
|
free (external_syms);
|
free (external_syms);
|
}
|
}
|
|
|
char *
|
char *
|
m32c_get_reloc (long reloc)
|
m32c_get_reloc (long reloc)
|
{
|
{
|
if (0 <= reloc && reloc < R_M32C_max)
|
if (0 <= reloc && reloc < R_M32C_max)
|
return m32c_elf_howto_table[reloc].name;
|
return m32c_elf_howto_table[reloc].name;
|
else
|
else
|
return "";
|
return "";
|
}
|
}
|
#endif /* DEBUG */
|
#endif /* DEBUG */
|
|
|
/* Handle relaxing. */
|
/* Handle relaxing. */
|
|
|
/* A subroutine of m32c_elf_relax_section. If the global symbol H
|
/* A subroutine of m32c_elf_relax_section. If the global symbol H
|
is within the low 64k, remove any entry for it in the plt. */
|
is within the low 64k, remove any entry for it in the plt. */
|
|
|
struct relax_plt_data
|
struct relax_plt_data
|
{
|
{
|
asection *splt;
|
asection *splt;
|
bfd_boolean *again;
|
bfd_boolean *again;
|
};
|
};
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_relax_plt_check (struct elf_link_hash_entry *h,
|
m32c_relax_plt_check (struct elf_link_hash_entry *h,
|
PTR xdata)
|
PTR xdata)
|
{
|
{
|
struct relax_plt_data *data = (struct relax_plt_data *) xdata;
|
struct relax_plt_data *data = (struct relax_plt_data *) xdata;
|
|
|
if (h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
if (h->plt.offset != (bfd_vma) -1)
|
if (h->plt.offset != (bfd_vma) -1)
|
{
|
{
|
bfd_vma address;
|
bfd_vma address;
|
|
|
if (h->root.type == bfd_link_hash_undefined
|
if (h->root.type == bfd_link_hash_undefined
|
|| h->root.type == bfd_link_hash_undefweak)
|
|| h->root.type == bfd_link_hash_undefweak)
|
address = 0;
|
address = 0;
|
else
|
else
|
address = (h->root.u.def.section->output_section->vma
|
address = (h->root.u.def.section->output_section->vma
|
+ h->root.u.def.section->output_offset
|
+ h->root.u.def.section->output_offset
|
+ h->root.u.def.value);
|
+ h->root.u.def.value);
|
|
|
if (address <= 0xffff)
|
if (address <= 0xffff)
|
{
|
{
|
h->plt.offset = -1;
|
h->plt.offset = -1;
|
data->splt->size -= 4;
|
data->splt->size -= 4;
|
*data->again = TRUE;
|
*data->again = TRUE;
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* A subroutine of m32c_elf_relax_section. If the global symbol H
|
/* A subroutine of m32c_elf_relax_section. If the global symbol H
|
previously had a plt entry, give it a new entry offset. */
|
previously had a plt entry, give it a new entry offset. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_relax_plt_realloc (struct elf_link_hash_entry *h,
|
m32c_relax_plt_realloc (struct elf_link_hash_entry *h,
|
PTR xdata)
|
PTR xdata)
|
{
|
{
|
bfd_vma *entry = (bfd_vma *) xdata;
|
bfd_vma *entry = (bfd_vma *) xdata;
|
|
|
if (h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
if (h->plt.offset != (bfd_vma) -1)
|
if (h->plt.offset != (bfd_vma) -1)
|
{
|
{
|
h->plt.offset = *entry;
|
h->plt.offset = *entry;
|
*entry += 4;
|
*entry += 4;
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_relax_plt_section (bfd *dynobj,
|
m32c_elf_relax_plt_section (bfd *dynobj,
|
asection *splt,
|
asection *splt,
|
struct bfd_link_info *info,
|
struct bfd_link_info *info,
|
bfd_boolean *again)
|
bfd_boolean *again)
|
{
|
{
|
struct relax_plt_data relax_plt_data;
|
struct relax_plt_data relax_plt_data;
|
bfd *ibfd;
|
bfd *ibfd;
|
|
|
/* Assume nothing changes. */
|
/* Assume nothing changes. */
|
*again = FALSE;
|
*again = FALSE;
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
return TRUE;
|
return TRUE;
|
|
|
/* We only relax the .plt section at the moment. */
|
/* We only relax the .plt section at the moment. */
|
if (dynobj != elf_hash_table (info)->dynobj
|
if (dynobj != elf_hash_table (info)->dynobj
|
|| strcmp (splt->name, ".plt") != 0)
|
|| strcmp (splt->name, ".plt") != 0)
|
return TRUE;
|
return TRUE;
|
|
|
/* Quick check for an empty plt. */
|
/* Quick check for an empty plt. */
|
if (splt->size == 0)
|
if (splt->size == 0)
|
return TRUE;
|
return TRUE;
|
|
|
/* Map across all global symbols; see which ones happen to
|
/* Map across all global symbols; see which ones happen to
|
fall in the low 64k. */
|
fall in the low 64k. */
|
relax_plt_data.splt = splt;
|
relax_plt_data.splt = splt;
|
relax_plt_data.again = again;
|
relax_plt_data.again = again;
|
elf_link_hash_traverse (elf_hash_table (info), m32c_relax_plt_check,
|
elf_link_hash_traverse (elf_hash_table (info), m32c_relax_plt_check,
|
&relax_plt_data);
|
&relax_plt_data);
|
|
|
/* Likewise for local symbols, though that's somewhat less convenient
|
/* Likewise for local symbols, though that's somewhat less convenient
|
as we have to walk the list of input bfds and swap in symbol data. */
|
as we have to walk the list of input bfds and swap in symbol data. */
|
for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
|
for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
|
{
|
{
|
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
|
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Sym *isymbuf = NULL;
|
Elf_Internal_Sym *isymbuf = NULL;
|
unsigned int idx;
|
unsigned int idx;
|
|
|
if (! local_plt_offsets)
|
if (! local_plt_offsets)
|
continue;
|
continue;
|
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
if (symtab_hdr->sh_info != 0)
|
if (symtab_hdr->sh_info != 0)
|
{
|
{
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
if (isymbuf == NULL)
|
if (isymbuf == NULL)
|
isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
symtab_hdr->sh_info, 0,
|
symtab_hdr->sh_info, 0,
|
NULL, NULL, NULL);
|
NULL, NULL, NULL);
|
if (isymbuf == NULL)
|
if (isymbuf == NULL)
|
return FALSE;
|
return FALSE;
|
}
|
}
|
|
|
for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
|
for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
|
{
|
{
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Sym *isym;
|
asection *tsec;
|
asection *tsec;
|
bfd_vma address;
|
bfd_vma address;
|
|
|
if (local_plt_offsets[idx] == (bfd_vma) -1)
|
if (local_plt_offsets[idx] == (bfd_vma) -1)
|
continue;
|
continue;
|
|
|
isym = &isymbuf[idx];
|
isym = &isymbuf[idx];
|
if (isym->st_shndx == SHN_UNDEF)
|
if (isym->st_shndx == SHN_UNDEF)
|
continue;
|
continue;
|
else if (isym->st_shndx == SHN_ABS)
|
else if (isym->st_shndx == SHN_ABS)
|
tsec = bfd_abs_section_ptr;
|
tsec = bfd_abs_section_ptr;
|
else if (isym->st_shndx == SHN_COMMON)
|
else if (isym->st_shndx == SHN_COMMON)
|
tsec = bfd_com_section_ptr;
|
tsec = bfd_com_section_ptr;
|
else
|
else
|
tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx);
|
tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx);
|
|
|
address = (tsec->output_section->vma
|
address = (tsec->output_section->vma
|
+ tsec->output_offset
|
+ tsec->output_offset
|
+ isym->st_value);
|
+ isym->st_value);
|
if (address <= 0xffff)
|
if (address <= 0xffff)
|
{
|
{
|
local_plt_offsets[idx] = -1;
|
local_plt_offsets[idx] = -1;
|
splt->size -= 4;
|
splt->size -= 4;
|
*again = TRUE;
|
*again = TRUE;
|
}
|
}
|
}
|
}
|
|
|
if (isymbuf != NULL
|
if (isymbuf != NULL
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
{
|
{
|
if (! info->keep_memory)
|
if (! info->keep_memory)
|
free (isymbuf);
|
free (isymbuf);
|
else
|
else
|
{
|
{
|
/* Cache the symbols for elf_link_input_bfd. */
|
/* Cache the symbols for elf_link_input_bfd. */
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* If we changed anything, walk the symbols again to reallocate
|
/* If we changed anything, walk the symbols again to reallocate
|
.plt entry addresses. */
|
.plt entry addresses. */
|
if (*again && splt->size > 0)
|
if (*again && splt->size > 0)
|
{
|
{
|
bfd_vma entry = 0;
|
bfd_vma entry = 0;
|
|
|
elf_link_hash_traverse (elf_hash_table (info),
|
elf_link_hash_traverse (elf_hash_table (info),
|
m32c_relax_plt_realloc, &entry);
|
m32c_relax_plt_realloc, &entry);
|
|
|
for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
|
for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
|
{
|
{
|
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
|
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
|
unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
|
unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
|
unsigned int idx;
|
unsigned int idx;
|
|
|
if (! local_plt_offsets)
|
if (! local_plt_offsets)
|
continue;
|
continue;
|
|
|
for (idx = 0; idx < nlocals; ++idx)
|
for (idx = 0; idx < nlocals; ++idx)
|
if (local_plt_offsets[idx] != (bfd_vma) -1)
|
if (local_plt_offsets[idx] != (bfd_vma) -1)
|
{
|
{
|
local_plt_offsets[idx] = entry;
|
local_plt_offsets[idx] = entry;
|
entry += 4;
|
entry += 4;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
static int
|
static int
|
compare_reloc (const void *e1, const void *e2)
|
compare_reloc (const void *e1, const void *e2)
|
{
|
{
|
const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
|
const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
|
const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
|
const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
|
|
|
if (i1->r_offset == i2->r_offset)
|
if (i1->r_offset == i2->r_offset)
|
return 0;
|
return 0;
|
else
|
else
|
return i1->r_offset < i2->r_offset ? -1 : 1;
|
return i1->r_offset < i2->r_offset ? -1 : 1;
|
}
|
}
|
|
|
#define OFFSET_FOR_RELOC(rel) m32c_offset_for_reloc (abfd, rel, symtab_hdr, shndx_buf, intsyms)
|
#define OFFSET_FOR_RELOC(rel) m32c_offset_for_reloc (abfd, rel, symtab_hdr, shndx_buf, intsyms)
|
static bfd_vma
|
static bfd_vma
|
m32c_offset_for_reloc (bfd *abfd,
|
m32c_offset_for_reloc (bfd *abfd,
|
Elf_Internal_Rela *rel,
|
Elf_Internal_Rela *rel,
|
Elf_Internal_Shdr *symtab_hdr,
|
Elf_Internal_Shdr *symtab_hdr,
|
Elf_External_Sym_Shndx *shndx_buf ATTRIBUTE_UNUSED,
|
Elf_External_Sym_Shndx *shndx_buf ATTRIBUTE_UNUSED,
|
Elf_Internal_Sym *intsyms)
|
Elf_Internal_Sym *intsyms)
|
{
|
{
|
bfd_vma symval;
|
bfd_vma symval;
|
|
|
/* Get the value of the symbol referred to by the reloc. */
|
/* Get the value of the symbol referred to by the reloc. */
|
if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info)
|
if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info)
|
{
|
{
|
/* A local symbol. */
|
/* A local symbol. */
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Sym *isym;
|
asection *ssec;
|
asection *ssec;
|
|
|
isym = intsyms + ELF32_R_SYM (rel->r_info);
|
isym = intsyms + ELF32_R_SYM (rel->r_info);
|
ssec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
ssec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
symval = isym->st_value;
|
symval = isym->st_value;
|
if (ssec)
|
if (ssec)
|
symval += ssec->output_section->vma
|
symval += ssec->output_section->vma
|
+ ssec->output_offset;
|
+ ssec->output_offset;
|
}
|
}
|
else
|
else
|
{
|
{
|
unsigned long indx;
|
unsigned long indx;
|
struct elf_link_hash_entry *h;
|
struct elf_link_hash_entry *h;
|
|
|
/* An external symbol. */
|
/* An external symbol. */
|
indx = ELF32_R_SYM (rel->r_info) - symtab_hdr->sh_info;
|
indx = ELF32_R_SYM (rel->r_info) - symtab_hdr->sh_info;
|
h = elf_sym_hashes (abfd)[indx];
|
h = elf_sym_hashes (abfd)[indx];
|
BFD_ASSERT (h != NULL);
|
BFD_ASSERT (h != NULL);
|
|
|
if (h->root.type != bfd_link_hash_defined
|
if (h->root.type != bfd_link_hash_defined
|
&& h->root.type != bfd_link_hash_defweak)
|
&& h->root.type != bfd_link_hash_defweak)
|
/* This appears to be a reference to an undefined
|
/* This appears to be a reference to an undefined
|
symbol. Just ignore it--it will be caught by the
|
symbol. Just ignore it--it will be caught by the
|
regular reloc processing. */
|
regular reloc processing. */
|
return 0;
|
return 0;
|
|
|
symval = (h->root.u.def.value
|
symval = (h->root.u.def.value
|
+ h->root.u.def.section->output_section->vma
|
+ h->root.u.def.section->output_section->vma
|
+ h->root.u.def.section->output_offset);
|
+ h->root.u.def.section->output_offset);
|
}
|
}
|
return symval;
|
return symval;
|
}
|
}
|
|
|
static int bytes_saved = 0;
|
static int bytes_saved = 0;
|
|
|
static int bytes_to_reloc[] = {
|
static int bytes_to_reloc[] = {
|
R_M32C_NONE,
|
R_M32C_NONE,
|
R_M32C_8,
|
R_M32C_8,
|
R_M32C_16,
|
R_M32C_16,
|
R_M32C_24,
|
R_M32C_24,
|
R_M32C_32
|
R_M32C_32
|
};
|
};
|
|
|
/* What we use the bits in a relax reloc addend (R_M32C_RL_*) for. */
|
/* What we use the bits in a relax reloc addend (R_M32C_RL_*) for. */
|
|
|
/* Mask for the number of relocs associated with this insn. */
|
/* Mask for the number of relocs associated with this insn. */
|
#define RLA_RELOCS 0x0000000f
|
#define RLA_RELOCS 0x0000000f
|
/* Number of bytes gas emitted (before gas's relaxing) */
|
/* Number of bytes gas emitted (before gas's relaxing) */
|
#define RLA_NBYTES 0x00000ff0
|
#define RLA_NBYTES 0x00000ff0
|
|
|
/* If the displacement is within the given range and the new encoding
|
/* If the displacement is within the given range and the new encoding
|
differs from the old encoding (the index), then the insn can be
|
differs from the old encoding (the index), then the insn can be
|
relaxed to the new encoding. */
|
relaxed to the new encoding. */
|
typedef struct {
|
typedef struct {
|
int bytes;
|
int bytes;
|
unsigned int max_disp;
|
unsigned int max_disp;
|
unsigned char new_encoding;
|
unsigned char new_encoding;
|
} EncodingTable;
|
} EncodingTable;
|
|
|
static EncodingTable m16c_addr_encodings[] = {
|
static EncodingTable m16c_addr_encodings[] = {
|
{ 0, 0, 0 }, /* R0 */
|
{ 0, 0, 0 }, /* R0 */
|
{ 0, 0, 1 }, /* R1 */
|
{ 0, 0, 1 }, /* R1 */
|
{ 0, 0, 2 }, /* R2 */
|
{ 0, 0, 2 }, /* R2 */
|
{ 0, 0, 3 }, /* R3 */
|
{ 0, 0, 3 }, /* R3 */
|
{ 0, 0, 4 }, /* A0 */
|
{ 0, 0, 4 }, /* A0 */
|
{ 0, 0, 5 }, /* A1 */
|
{ 0, 0, 5 }, /* A1 */
|
{ 0, 0, 6 }, /* [A0] */
|
{ 0, 0, 6 }, /* [A0] */
|
{ 0, 0, 7 }, /* [A1] */
|
{ 0, 0, 7 }, /* [A1] */
|
{ 1, 0, 6 }, /* udsp:8[A0] */
|
{ 1, 0, 6 }, /* udsp:8[A0] */
|
{ 1, 0, 7 }, /* udsp:8[A1] */
|
{ 1, 0, 7 }, /* udsp:8[A1] */
|
{ 1, 0, 10 }, /* udsp:8[SB] */
|
{ 1, 0, 10 }, /* udsp:8[SB] */
|
{ 1, 0, 11 }, /* sdsp:8[FB] */
|
{ 1, 0, 11 }, /* sdsp:8[FB] */
|
{ 2, 255, 8 }, /* udsp:16[A0] */
|
{ 2, 255, 8 }, /* udsp:16[A0] */
|
{ 2, 255, 9 }, /* udsp:16[A1] */
|
{ 2, 255, 9 }, /* udsp:16[A1] */
|
{ 2, 255, 10 }, /* udsp:16[SB] */
|
{ 2, 255, 10 }, /* udsp:16[SB] */
|
{ 2, 0, 15 }, /* abs:16 */
|
{ 2, 0, 15 }, /* abs:16 */
|
};
|
};
|
|
|
static EncodingTable m16c_jmpaddr_encodings[] = {
|
static EncodingTable m16c_jmpaddr_encodings[] = {
|
{ 0, 0, 0 }, /* R0 */
|
{ 0, 0, 0 }, /* R0 */
|
{ 0, 0, 1 }, /* R1 */
|
{ 0, 0, 1 }, /* R1 */
|
{ 0, 0, 2 }, /* R2 */
|
{ 0, 0, 2 }, /* R2 */
|
{ 0, 0, 3 }, /* R3 */
|
{ 0, 0, 3 }, /* R3 */
|
{ 0, 0, 4 }, /* A0 */
|
{ 0, 0, 4 }, /* A0 */
|
{ 0, 0, 5 }, /* A1 */
|
{ 0, 0, 5 }, /* A1 */
|
{ 0, 0, 6 }, /* [A0] */
|
{ 0, 0, 6 }, /* [A0] */
|
{ 0, 0, 7 }, /* [A1] */
|
{ 0, 0, 7 }, /* [A1] */
|
{ 1, 0, 6 }, /* udsp:8[A0] */
|
{ 1, 0, 6 }, /* udsp:8[A0] */
|
{ 1, 0, 7 }, /* udsp:8[A1] */
|
{ 1, 0, 7 }, /* udsp:8[A1] */
|
{ 1, 0, 10 }, /* udsp:8[SB] */
|
{ 1, 0, 10 }, /* udsp:8[SB] */
|
{ 1, 0, 11 }, /* sdsp:8[FB] */
|
{ 1, 0, 11 }, /* sdsp:8[FB] */
|
{ 3, 255, 8 }, /* udsp:20[A0] */
|
{ 3, 255, 8 }, /* udsp:20[A0] */
|
{ 3, 255, 9 }, /* udsp:20[A1] */
|
{ 3, 255, 9 }, /* udsp:20[A1] */
|
{ 2, 255, 10 }, /* udsp:16[SB] */
|
{ 2, 255, 10 }, /* udsp:16[SB] */
|
{ 2, 0, 15 }, /* abs:16 */
|
{ 2, 0, 15 }, /* abs:16 */
|
};
|
};
|
|
|
static EncodingTable m32c_addr_encodings[] = {
|
static EncodingTable m32c_addr_encodings[] = {
|
{ 0, 0, 0 }, /* [A0] */
|
{ 0, 0, 0 }, /* [A0] */
|
{ 0, 0, 1 }, /* [A1] */
|
{ 0, 0, 1 }, /* [A1] */
|
{ 0, 0, 2 }, /* A0 */
|
{ 0, 0, 2 }, /* A0 */
|
{ 0, 0, 3 }, /* A1 */
|
{ 0, 0, 3 }, /* A1 */
|
{ 1, 0, 0 }, /* udsp:8[A0] */
|
{ 1, 0, 0 }, /* udsp:8[A0] */
|
{ 1, 0, 1 }, /* udsp:8[A1] */
|
{ 1, 0, 1 }, /* udsp:8[A1] */
|
{ 1, 0, 6 }, /* udsp:8[SB] */
|
{ 1, 0, 6 }, /* udsp:8[SB] */
|
{ 1, 0, 7 }, /* sdsp:8[FB] */
|
{ 1, 0, 7 }, /* sdsp:8[FB] */
|
{ 2, 255, 4 }, /* udsp:16[A0] */
|
{ 2, 255, 4 }, /* udsp:16[A0] */
|
{ 2, 255, 5 }, /* udsp:16[A1] */
|
{ 2, 255, 5 }, /* udsp:16[A1] */
|
{ 2, 255, 6 }, /* udsp:16[SB] */
|
{ 2, 255, 6 }, /* udsp:16[SB] */
|
{ 2, 127, 7 }, /* sdsp:16[FB] */
|
{ 2, 127, 7 }, /* sdsp:16[FB] */
|
{ 3, 65535, 8 }, /* udsp:24[A0] */
|
{ 3, 65535, 8 }, /* udsp:24[A0] */
|
{ 3, 65535, 9 }, /* udsp:24[A1] */
|
{ 3, 65535, 9 }, /* udsp:24[A1] */
|
{ 3, 65535, 15 }, /* abs24 */
|
{ 3, 65535, 15 }, /* abs24 */
|
{ 2, 0, 15 }, /* abs16 */
|
{ 2, 0, 15 }, /* abs16 */
|
{ 0, 0, 16 }, /* R2 */
|
{ 0, 0, 16 }, /* R2 */
|
{ 0, 0, 17 }, /* R3 */
|
{ 0, 0, 17 }, /* R3 */
|
{ 0, 0, 18 }, /* R0 */
|
{ 0, 0, 18 }, /* R0 */
|
{ 0, 0, 19 }, /* R1 */
|
{ 0, 0, 19 }, /* R1 */
|
{ 0, 0, 20 }, /* */
|
{ 0, 0, 20 }, /* */
|
{ 0, 0, 21 }, /* */
|
{ 0, 0, 21 }, /* */
|
{ 0, 0, 22 }, /* */
|
{ 0, 0, 22 }, /* */
|
{ 0, 0, 23 }, /* */
|
{ 0, 0, 23 }, /* */
|
{ 0, 0, 24 }, /* */
|
{ 0, 0, 24 }, /* */
|
{ 0, 0, 25 }, /* */
|
{ 0, 0, 25 }, /* */
|
{ 0, 0, 26 }, /* */
|
{ 0, 0, 26 }, /* */
|
{ 0, 0, 27 }, /* */
|
{ 0, 0, 27 }, /* */
|
{ 0, 0, 28 }, /* */
|
{ 0, 0, 28 }, /* */
|
{ 0, 0, 29 }, /* */
|
{ 0, 0, 29 }, /* */
|
{ 0, 0, 30 }, /* */
|
{ 0, 0, 30 }, /* */
|
{ 0, 0, 31 }, /* */
|
{ 0, 0, 31 }, /* */
|
};
|
};
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_relax_section
|
m32c_elf_relax_section
|
(bfd * abfd,
|
(bfd * abfd,
|
asection * sec,
|
asection * sec,
|
struct bfd_link_info * link_info,
|
struct bfd_link_info * link_info,
|
bfd_boolean * again)
|
bfd_boolean * again)
|
{
|
{
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *shndx_hdr;
|
Elf_Internal_Shdr *shndx_hdr;
|
Elf_Internal_Rela *internal_relocs;
|
Elf_Internal_Rela *internal_relocs;
|
Elf_Internal_Rela *free_relocs = NULL;
|
Elf_Internal_Rela *free_relocs = NULL;
|
Elf_Internal_Rela *irel, *irelend, *srel;
|
Elf_Internal_Rela *irel, *irelend, *srel;
|
bfd_byte * contents = NULL;
|
bfd_byte * contents = NULL;
|
bfd_byte * free_contents = NULL;
|
bfd_byte * free_contents = NULL;
|
Elf_Internal_Sym *intsyms = NULL;
|
Elf_Internal_Sym *intsyms = NULL;
|
Elf_Internal_Sym *free_intsyms = NULL;
|
Elf_Internal_Sym *free_intsyms = NULL;
|
Elf_External_Sym_Shndx *shndx_buf = NULL;
|
Elf_External_Sym_Shndx *shndx_buf = NULL;
|
int machine;
|
int machine;
|
|
|
if (abfd == elf_hash_table (link_info)->dynobj
|
if (abfd == elf_hash_table (link_info)->dynobj
|
&& strcmp (sec->name, ".plt") == 0)
|
&& strcmp (sec->name, ".plt") == 0)
|
return m32c_elf_relax_plt_section (abfd, sec, link_info, again);
|
return m32c_elf_relax_plt_section (abfd, sec, link_info, again);
|
|
|
/* Assume nothing changes. */
|
/* Assume nothing changes. */
|
*again = FALSE;
|
*again = FALSE;
|
|
|
machine = elf32_m32c_machine (abfd);
|
machine = elf32_m32c_machine (abfd);
|
|
|
/* We don't have to do anything for a relocatable link, if
|
/* We don't have to do anything for a relocatable link, if
|
this section does not have relocs, or if this is not a
|
this section does not have relocs, or if this is not a
|
code section. */
|
code section. */
|
if (link_info->relocatable
|
if (link_info->relocatable
|
|| (sec->flags & SEC_RELOC) == 0
|
|| (sec->flags & SEC_RELOC) == 0
|
|| sec->reloc_count == 0
|
|| sec->reloc_count == 0
|
|| (sec->flags & SEC_CODE) == 0)
|
|| (sec->flags & SEC_CODE) == 0)
|
return TRUE;
|
return TRUE;
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
|
shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
|
|
|
/* Get the section contents. */
|
/* Get the section contents. */
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
contents = elf_section_data (sec)->this_hdr.contents;
|
contents = elf_section_data (sec)->this_hdr.contents;
|
/* Go get them off disk. */
|
/* Go get them off disk. */
|
else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
goto error_return;
|
goto error_return;
|
|
|
/* Read this BFD's symbols. */
|
/* Read this BFD's symbols. */
|
/* Get cached copy if it exists. */
|
/* Get cached copy if it exists. */
|
if (symtab_hdr->contents != NULL)
|
if (symtab_hdr->contents != NULL)
|
{
|
{
|
intsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
intsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
}
|
}
|
else
|
else
|
{
|
{
|
intsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, symtab_hdr->sh_info, 0, NULL, NULL, NULL);
|
intsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, symtab_hdr->sh_info, 0, NULL, NULL, NULL);
|
symtab_hdr->contents = (bfd_byte *) intsyms;
|
symtab_hdr->contents = (bfd_byte *) intsyms;
|
}
|
}
|
|
|
if (shndx_hdr->sh_size != 0)
|
if (shndx_hdr->sh_size != 0)
|
{
|
{
|
bfd_size_type amt;
|
bfd_size_type amt;
|
|
|
amt = symtab_hdr->sh_info;
|
amt = symtab_hdr->sh_info;
|
amt *= sizeof (Elf_External_Sym_Shndx);
|
amt *= sizeof (Elf_External_Sym_Shndx);
|
shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
|
shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
|
if (shndx_buf == NULL)
|
if (shndx_buf == NULL)
|
goto error_return;
|
goto error_return;
|
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|
|| bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
|
|| bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
|
goto error_return;
|
goto error_return;
|
shndx_hdr->contents = (bfd_byte *) shndx_buf;
|
shndx_hdr->contents = (bfd_byte *) shndx_buf;
|
}
|
}
|
|
|
/* Get a copy of the native relocations. */
|
/* Get a copy of the native relocations. */
|
internal_relocs = (_bfd_elf_link_read_relocs
|
internal_relocs = (_bfd_elf_link_read_relocs
|
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
|
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
|
link_info->keep_memory));
|
link_info->keep_memory));
|
if (internal_relocs == NULL)
|
if (internal_relocs == NULL)
|
goto error_return;
|
goto error_return;
|
if (! link_info->keep_memory)
|
if (! link_info->keep_memory)
|
free_relocs = internal_relocs;
|
free_relocs = internal_relocs;
|
|
|
/* The RL_ relocs must be just before the operand relocs they go
|
/* The RL_ relocs must be just before the operand relocs they go
|
with, so we must sort them to guarantee this. */
|
with, so we must sort them to guarantee this. */
|
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
|
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
|
compare_reloc);
|
compare_reloc);
|
|
|
/* Walk through them looking for relaxing opportunities. */
|
/* Walk through them looking for relaxing opportunities. */
|
irelend = internal_relocs + sec->reloc_count;
|
irelend = internal_relocs + sec->reloc_count;
|
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
for (irel = internal_relocs; irel < irelend; irel++)
|
{
|
{
|
bfd_vma symval;
|
bfd_vma symval;
|
unsigned char *insn, *gap, *einsn;
|
unsigned char *insn, *gap, *einsn;
|
bfd_vma pc;
|
bfd_vma pc;
|
bfd_signed_vma pcrel;
|
bfd_signed_vma pcrel;
|
int relax_relocs;
|
int relax_relocs;
|
int gap_size;
|
int gap_size;
|
int new_type;
|
int new_type;
|
int posn;
|
int posn;
|
int enc;
|
int enc;
|
EncodingTable *enctbl;
|
EncodingTable *enctbl;
|
EncodingTable *e;
|
EncodingTable *e;
|
|
|
if (ELF32_R_TYPE(irel->r_info) != R_M32C_RL_JUMP
|
if (ELF32_R_TYPE(irel->r_info) != R_M32C_RL_JUMP
|
&& ELF32_R_TYPE(irel->r_info) != R_M32C_RL_1ADDR
|
&& ELF32_R_TYPE(irel->r_info) != R_M32C_RL_1ADDR
|
&& ELF32_R_TYPE(irel->r_info) != R_M32C_RL_2ADDR)
|
&& ELF32_R_TYPE(irel->r_info) != R_M32C_RL_2ADDR)
|
continue;
|
continue;
|
|
|
srel = irel;
|
srel = irel;
|
|
|
/* There will always be room for the relaxed insn, since it is smaller
|
/* There will always be room for the relaxed insn, since it is smaller
|
than the one it would replace. */
|
than the one it would replace. */
|
BFD_ASSERT (irel->r_offset < sec->size);
|
BFD_ASSERT (irel->r_offset < sec->size);
|
|
|
insn = contents + irel->r_offset;
|
insn = contents + irel->r_offset;
|
relax_relocs = irel->r_addend % 16;
|
relax_relocs = irel->r_addend % 16;
|
|
|
/* Ok, we only have three relocs we care about, and they're all
|
/* Ok, we only have three relocs we care about, and they're all
|
fake. The lower four bits of the addend is always the number
|
fake. The lower four bits of the addend is always the number
|
of following relocs (hence the qsort above) that are assigned
|
of following relocs (hence the qsort above) that are assigned
|
to this opcode. The next 8 bits of the addend indicates the
|
to this opcode. The next 8 bits of the addend indicates the
|
number of bytes in the insn. We use the rest of them
|
number of bytes in the insn. We use the rest of them
|
ourselves as flags for the more expensive operations (defines
|
ourselves as flags for the more expensive operations (defines
|
above). The three relocs are:
|
above). The three relocs are:
|
|
|
RL_JUMP: This marks all direct jump insns. We check the
|
RL_JUMP: This marks all direct jump insns. We check the
|
displacement and replace them with shorter jumps if
|
displacement and replace them with shorter jumps if
|
they're in range. We also use this to find JMP.S
|
they're in range. We also use this to find JMP.S
|
insns and manually shorten them when we delete bytes.
|
insns and manually shorten them when we delete bytes.
|
We have to decode these insns to figure out what to
|
We have to decode these insns to figure out what to
|
do.
|
do.
|
|
|
RL_1ADDR: This is a :G or :Q insn, which has a single
|
RL_1ADDR: This is a :G or :Q insn, which has a single
|
"standard" operand. We have to extract the type
|
"standard" operand. We have to extract the type
|
field, see if it's a wide displacement, then figure
|
field, see if it's a wide displacement, then figure
|
out if we can replace it with a narrow displacement.
|
out if we can replace it with a narrow displacement.
|
We don't have to decode these insns.
|
We don't have to decode these insns.
|
|
|
RL_2ADDR: Similarly, but two "standard" operands. Note that
|
RL_2ADDR: Similarly, but two "standard" operands. Note that
|
r_addend may still be 1, as standard operands don't
|
r_addend may still be 1, as standard operands don't
|
always have displacements. Gas shouldn't give us one
|
always have displacements. Gas shouldn't give us one
|
with zero operands, but since we don't know which one
|
with zero operands, but since we don't know which one
|
has the displacement, we check them both anyway.
|
has the displacement, we check them both anyway.
|
|
|
These all point to the beginning of the insn itself, not the
|
These all point to the beginning of the insn itself, not the
|
operands.
|
operands.
|
|
|
Note that we only relax one step at a time, relying on the
|
Note that we only relax one step at a time, relying on the
|
linker to call us repeatedly. Thus, there is no code for
|
linker to call us repeatedly. Thus, there is no code for
|
JMP.A->JMP.B although that will happen in two steps.
|
JMP.A->JMP.B although that will happen in two steps.
|
Likewise, for 2ADDR relaxes, we do one operand per cycle.
|
Likewise, for 2ADDR relaxes, we do one operand per cycle.
|
*/
|
*/
|
|
|
/* Get the value of the symbol referred to by the reloc. Just
|
/* Get the value of the symbol referred to by the reloc. Just
|
in case this is the last reloc in the list, use the RL's
|
in case this is the last reloc in the list, use the RL's
|
addend to choose between this reloc (no addend) or the next
|
addend to choose between this reloc (no addend) or the next
|
(yes addend, which means at least one following reloc). */
|
(yes addend, which means at least one following reloc). */
|
srel = irel + (relax_relocs ? 1 : 0);
|
srel = irel + (relax_relocs ? 1 : 0);
|
symval = OFFSET_FOR_RELOC (srel);
|
symval = OFFSET_FOR_RELOC (srel);
|
|
|
/* Setting gap_size nonzero is the flag which means "something
|
/* Setting gap_size nonzero is the flag which means "something
|
shrunk". */
|
shrunk". */
|
gap_size = 0;
|
gap_size = 0;
|
gap = NULL;
|
gap = NULL;
|
new_type = ELF32_R_TYPE(srel->r_info);
|
new_type = ELF32_R_TYPE(srel->r_info);
|
|
|
pc = sec->output_section->vma + sec->output_offset
|
pc = sec->output_section->vma + sec->output_offset
|
+ srel->r_offset;
|
+ srel->r_offset;
|
pcrel = symval - pc + srel->r_addend;
|
pcrel = symval - pc + srel->r_addend;
|
|
|
if (machine == bfd_mach_m16c)
|
if (machine == bfd_mach_m16c)
|
{
|
{
|
/* R8C / M16C */
|
/* R8C / M16C */
|
|
|
switch (ELF32_R_TYPE(irel->r_info))
|
switch (ELF32_R_TYPE(irel->r_info))
|
{
|
{
|
|
|
case R_M32C_RL_JUMP:
|
case R_M32C_RL_JUMP:
|
switch (insn[0])
|
switch (insn[0])
|
{
|
{
|
case 0xfe: /* jmp.b */
|
case 0xfe: /* jmp.b */
|
if (pcrel >= 2 && pcrel <= 9)
|
if (pcrel >= 2 && pcrel <= 9)
|
{
|
{
|
/* Relax JMP.B -> JMP.S. We need to get rid of
|
/* Relax JMP.B -> JMP.S. We need to get rid of
|
the following reloc though. */
|
the following reloc though. */
|
insn[0] = 0x60 | (pcrel - 2);
|
insn[0] = 0x60 | (pcrel - 2);
|
new_type = R_M32C_NONE;
|
new_type = R_M32C_NONE;
|
irel->r_addend = 0x10;
|
irel->r_addend = 0x10;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 1;
|
gap = insn + 1;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xf4: /* jmp.w */
|
case 0xf4: /* jmp.w */
|
/* 128 is allowed because it will be one byte closer
|
/* 128 is allowed because it will be one byte closer
|
after relaxing. Likewise for all other pc-rel
|
after relaxing. Likewise for all other pc-rel
|
jumps. */
|
jumps. */
|
if (pcrel <= 128 && pcrel >= -128)
|
if (pcrel <= 128 && pcrel >= -128)
|
{
|
{
|
/* Relax JMP.W -> JMP.B */
|
/* Relax JMP.W -> JMP.B */
|
insn[0] = 0xfe;
|
insn[0] = 0xfe;
|
insn[1] = 0;
|
insn[1] = 0;
|
new_type = R_M32C_8_PCREL;
|
new_type = R_M32C_8_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 2;
|
gap = insn + 2;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xfc: /* jmp.a */
|
case 0xfc: /* jmp.a */
|
if (pcrel <= 32768 && pcrel >= -32768)
|
if (pcrel <= 32768 && pcrel >= -32768)
|
{
|
{
|
/* Relax JMP.A -> JMP.W */
|
/* Relax JMP.A -> JMP.W */
|
insn[0] = 0xf4;
|
insn[0] = 0xf4;
|
insn[1] = 0;
|
insn[1] = 0;
|
insn[2] = 0;
|
insn[2] = 0;
|
new_type = R_M32C_16_PCREL;
|
new_type = R_M32C_16_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 3;
|
gap = insn + 3;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xfd: /* jsr.a */
|
case 0xfd: /* jsr.a */
|
if (pcrel <= 32768 && pcrel >= -32768)
|
if (pcrel <= 32768 && pcrel >= -32768)
|
{
|
{
|
/* Relax JSR.A -> JSR.W */
|
/* Relax JSR.A -> JSR.W */
|
insn[0] = 0xf5;
|
insn[0] = 0xf5;
|
insn[1] = 0;
|
insn[1] = 0;
|
insn[2] = 0;
|
insn[2] = 0;
|
new_type = R_M32C_16_PCREL;
|
new_type = R_M32C_16_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 3;
|
gap = insn + 3;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
break;
|
break;
|
|
|
case R_M32C_RL_2ADDR:
|
case R_M32C_RL_2ADDR:
|
/* xxxx xxxx srce dest [src-disp] [dest-disp]*/
|
/* xxxx xxxx srce dest [src-disp] [dest-disp]*/
|
|
|
enctbl = m16c_addr_encodings;
|
enctbl = m16c_addr_encodings;
|
posn = 2;
|
posn = 2;
|
enc = (insn[1] >> 4) & 0x0f;
|
enc = (insn[1] >> 4) & 0x0f;
|
e = & enctbl[enc];
|
e = & enctbl[enc];
|
|
|
if (srel->r_offset == irel->r_offset + posn
|
if (srel->r_offset == irel->r_offset + posn
|
&& e->new_encoding != enc
|
&& e->new_encoding != enc
|
&& symval <= e->max_disp)
|
&& symval <= e->max_disp)
|
{
|
{
|
insn[1] &= 0x0f;
|
insn[1] &= 0x0f;
|
insn[1] |= e->new_encoding << 4;
|
insn[1] |= e->new_encoding << 4;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
break;
|
break;
|
}
|
}
|
if (relax_relocs == 2)
|
if (relax_relocs == 2)
|
srel ++;
|
srel ++;
|
posn += e->bytes;
|
posn += e->bytes;
|
|
|
goto try_1addr_16;
|
goto try_1addr_16;
|
|
|
case R_M32C_RL_1ADDR:
|
case R_M32C_RL_1ADDR:
|
/* xxxx xxxx xxxx dest [disp] */
|
/* xxxx xxxx xxxx dest [disp] */
|
|
|
enctbl = m16c_addr_encodings;
|
enctbl = m16c_addr_encodings;
|
posn = 2;
|
posn = 2;
|
|
|
/* Check the opcode for jumps. We know it's safe to
|
/* Check the opcode for jumps. We know it's safe to
|
do this because all 2ADDR insns are at least two
|
do this because all 2ADDR insns are at least two
|
bytes long. */
|
bytes long. */
|
enc = insn[0] * 256 + insn[1];
|
enc = insn[0] * 256 + insn[1];
|
enc &= 0xfff0;
|
enc &= 0xfff0;
|
if (enc == 0x7d20
|
if (enc == 0x7d20
|
|| enc == 0x7d00
|
|| enc == 0x7d00
|
|| enc == 0x7d30
|
|| enc == 0x7d30
|
|| enc == 0x7d10)
|
|| enc == 0x7d10)
|
{
|
{
|
enctbl = m16c_jmpaddr_encodings;
|
enctbl = m16c_jmpaddr_encodings;
|
}
|
}
|
|
|
try_1addr_16:
|
try_1addr_16:
|
/* srel, posn, and enc must be set here. */
|
/* srel, posn, and enc must be set here. */
|
|
|
symval = OFFSET_FOR_RELOC (srel);
|
symval = OFFSET_FOR_RELOC (srel);
|
enc = insn[1] & 0x0f;
|
enc = insn[1] & 0x0f;
|
e = & enctbl[enc];
|
e = & enctbl[enc];
|
|
|
if (srel->r_offset == irel->r_offset + posn
|
if (srel->r_offset == irel->r_offset + posn
|
&& e->new_encoding != enc
|
&& e->new_encoding != enc
|
&& symval <= e->max_disp)
|
&& symval <= e->max_disp)
|
{
|
{
|
insn[1] &= 0xf0;
|
insn[1] &= 0xf0;
|
insn[1] |= e->new_encoding;
|
insn[1] |= e->new_encoding;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
break;
|
break;
|
}
|
}
|
|
|
break;
|
break;
|
|
|
} /* Ends switch (reloc type) for m16c. */
|
} /* Ends switch (reloc type) for m16c. */
|
}
|
}
|
else /* machine == bfd_mach_m32c */
|
else /* machine == bfd_mach_m32c */
|
{
|
{
|
/* M32CM / M32C */
|
/* M32CM / M32C */
|
|
|
switch (ELF32_R_TYPE(irel->r_info))
|
switch (ELF32_R_TYPE(irel->r_info))
|
{
|
{
|
|
|
case R_M32C_RL_JUMP:
|
case R_M32C_RL_JUMP:
|
switch (insn[0])
|
switch (insn[0])
|
{
|
{
|
case 0xbb: /* jmp.b */
|
case 0xbb: /* jmp.b */
|
if (pcrel >= 2 && pcrel <= 9)
|
if (pcrel >= 2 && pcrel <= 9)
|
{
|
{
|
int p = pcrel - 2;
|
int p = pcrel - 2;
|
/* Relax JMP.B -> JMP.S. We need to get rid of
|
/* Relax JMP.B -> JMP.S. We need to get rid of
|
the following reloc though. */
|
the following reloc though. */
|
insn[0] = 0x4a | ((p << 3) & 0x30) | (p & 1);
|
insn[0] = 0x4a | ((p << 3) & 0x30) | (p & 1);
|
new_type = R_M32C_NONE;
|
new_type = R_M32C_NONE;
|
irel->r_addend = 0x10;
|
irel->r_addend = 0x10;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 1;
|
gap = insn + 1;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xce: /* jmp.w */
|
case 0xce: /* jmp.w */
|
if (pcrel <= 128 && pcrel >= -128)
|
if (pcrel <= 128 && pcrel >= -128)
|
{
|
{
|
/* Relax JMP.W -> JMP.B */
|
/* Relax JMP.W -> JMP.B */
|
insn[0] = 0xbb;
|
insn[0] = 0xbb;
|
insn[1] = 0;
|
insn[1] = 0;
|
new_type = R_M32C_8_PCREL;
|
new_type = R_M32C_8_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 2;
|
gap = insn + 2;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xcc: /* jmp.a */
|
case 0xcc: /* jmp.a */
|
if (pcrel <= 32768 && pcrel >= -32768)
|
if (pcrel <= 32768 && pcrel >= -32768)
|
{
|
{
|
/* Relax JMP.A -> JMP.W */
|
/* Relax JMP.A -> JMP.W */
|
insn[0] = 0xce;
|
insn[0] = 0xce;
|
insn[1] = 0;
|
insn[1] = 0;
|
insn[2] = 0;
|
insn[2] = 0;
|
new_type = R_M32C_16_PCREL;
|
new_type = R_M32C_16_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 3;
|
gap = insn + 3;
|
}
|
}
|
break;
|
break;
|
|
|
case 0xcd: /* jsr.a */
|
case 0xcd: /* jsr.a */
|
if (pcrel <= 32768 && pcrel >= -32768)
|
if (pcrel <= 32768 && pcrel >= -32768)
|
{
|
{
|
/* Relax JSR.A -> JSR.W */
|
/* Relax JSR.A -> JSR.W */
|
insn[0] = 0xcf;
|
insn[0] = 0xcf;
|
insn[1] = 0;
|
insn[1] = 0;
|
insn[2] = 0;
|
insn[2] = 0;
|
new_type = R_M32C_16_PCREL;
|
new_type = R_M32C_16_PCREL;
|
gap_size = 1;
|
gap_size = 1;
|
gap = insn + 3;
|
gap = insn + 3;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
break;
|
break;
|
|
|
case R_M32C_RL_2ADDR:
|
case R_M32C_RL_2ADDR:
|
/* xSSS DDDx DDSS xxxx [src-disp] [dest-disp]*/
|
/* xSSS DDDx DDSS xxxx [src-disp] [dest-disp]*/
|
|
|
einsn = insn;
|
einsn = insn;
|
posn = 2;
|
posn = 2;
|
if (einsn[0] == 1)
|
if (einsn[0] == 1)
|
{
|
{
|
/* prefix; remove it as far as the RL reloc is concerned. */
|
/* prefix; remove it as far as the RL reloc is concerned. */
|
einsn ++;
|
einsn ++;
|
posn ++;
|
posn ++;
|
}
|
}
|
|
|
enctbl = m32c_addr_encodings;
|
enctbl = m32c_addr_encodings;
|
enc = ((einsn[0] & 0x70) >> 2) | ((einsn[1] & 0x30) >> 4);
|
enc = ((einsn[0] & 0x70) >> 2) | ((einsn[1] & 0x30) >> 4);
|
e = & enctbl[enc];
|
e = & enctbl[enc];
|
|
|
if (srel->r_offset == irel->r_offset + posn
|
if (srel->r_offset == irel->r_offset + posn
|
&& e->new_encoding != enc
|
&& e->new_encoding != enc
|
&& symval <= e->max_disp)
|
&& symval <= e->max_disp)
|
{
|
{
|
einsn[0] &= 0x8f;
|
einsn[0] &= 0x8f;
|
einsn[0] |= (e->new_encoding & 0x1c) << 2;
|
einsn[0] |= (e->new_encoding & 0x1c) << 2;
|
einsn[1] &= 0xcf;
|
einsn[1] &= 0xcf;
|
einsn[1] |= (e->new_encoding & 0x03) << 4;
|
einsn[1] |= (e->new_encoding & 0x03) << 4;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
break;
|
break;
|
}
|
}
|
if (relax_relocs == 2)
|
if (relax_relocs == 2)
|
srel ++;
|
srel ++;
|
posn += e->bytes;
|
posn += e->bytes;
|
|
|
goto try_1addr_32;
|
goto try_1addr_32;
|
|
|
case R_M32C_RL_1ADDR:
|
case R_M32C_RL_1ADDR:
|
/* xxxx DDDx DDxx xxxx [disp] */
|
/* xxxx DDDx DDxx xxxx [disp] */
|
|
|
einsn = insn;
|
einsn = insn;
|
posn = 2;
|
posn = 2;
|
if (einsn[0] == 1)
|
if (einsn[0] == 1)
|
{
|
{
|
/* prefix; remove it as far as the RL reloc is concerned. */
|
/* prefix; remove it as far as the RL reloc is concerned. */
|
einsn ++;
|
einsn ++;
|
posn ++;
|
posn ++;
|
}
|
}
|
|
|
enctbl = m32c_addr_encodings;
|
enctbl = m32c_addr_encodings;
|
|
|
try_1addr_32:
|
try_1addr_32:
|
/* srel, posn, and enc must be set here. */
|
/* srel, posn, and enc must be set here. */
|
|
|
symval = OFFSET_FOR_RELOC (srel);
|
symval = OFFSET_FOR_RELOC (srel);
|
enc = ((einsn[0] & 0x0e) << 1) | ((einsn[1] & 0xc0) >> 6);
|
enc = ((einsn[0] & 0x0e) << 1) | ((einsn[1] & 0xc0) >> 6);
|
e = & enctbl[enc];
|
e = & enctbl[enc];
|
|
|
if (srel->r_offset == irel->r_offset + posn
|
if (srel->r_offset == irel->r_offset + posn
|
&& e->new_encoding != enc
|
&& e->new_encoding != enc
|
&& symval <= e->max_disp)
|
&& symval <= e->max_disp)
|
{
|
{
|
einsn[0] &= 0xf1;
|
einsn[0] &= 0xf1;
|
einsn[0] |= (e->new_encoding & 0x1c) >> 1;
|
einsn[0] |= (e->new_encoding & 0x1c) >> 1;
|
einsn[1] &= 0x3f;
|
einsn[1] &= 0x3f;
|
einsn[1] |= (e->new_encoding & 0x03) << 6;
|
einsn[1] |= (e->new_encoding & 0x03) << 6;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap_size = e->bytes - enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
gap = insn + posn + enctbl[e->new_encoding].bytes;
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes];
|
break;
|
break;
|
}
|
}
|
|
|
break;
|
break;
|
|
|
} /* Ends switch (reloc type) for m32c. */
|
} /* Ends switch (reloc type) for m32c. */
|
}
|
}
|
|
|
if (gap_size == 0)
|
if (gap_size == 0)
|
continue;
|
continue;
|
|
|
*again = TRUE;
|
*again = TRUE;
|
|
|
srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), new_type);
|
srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), new_type);
|
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
/* Note that we've changed the relocs, section contents, etc. */
|
elf_section_data (sec)->relocs = internal_relocs;
|
elf_section_data (sec)->relocs = internal_relocs;
|
free_relocs = NULL;
|
free_relocs = NULL;
|
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
elf_section_data (sec)->this_hdr.contents = contents;
|
free_contents = NULL;
|
free_contents = NULL;
|
|
|
symtab_hdr->contents = (bfd_byte *) intsyms;
|
symtab_hdr->contents = (bfd_byte *) intsyms;
|
free_intsyms = NULL;
|
free_intsyms = NULL;
|
|
|
bytes_saved += gap_size;
|
bytes_saved += gap_size;
|
|
|
if (! m32c_elf_relax_delete_bytes(abfd, sec, gap - contents, gap_size))
|
if (! m32c_elf_relax_delete_bytes(abfd, sec, gap - contents, gap_size))
|
goto error_return;
|
goto error_return;
|
|
|
} /* next relocation */
|
} /* next relocation */
|
|
|
if (free_relocs != NULL)
|
if (free_relocs != NULL)
|
{
|
{
|
free (free_relocs);
|
free (free_relocs);
|
free_relocs = NULL;
|
free_relocs = NULL;
|
}
|
}
|
|
|
if (free_contents != NULL)
|
if (free_contents != NULL)
|
{
|
{
|
if (! link_info->keep_memory)
|
if (! link_info->keep_memory)
|
free (free_contents);
|
free (free_contents);
|
/* Cache the section contents for elf_link_input_bfd. */
|
/* Cache the section contents for elf_link_input_bfd. */
|
else
|
else
|
elf_section_data (sec)->this_hdr.contents = contents;
|
elf_section_data (sec)->this_hdr.contents = contents;
|
|
|
free_contents = NULL;
|
free_contents = NULL;
|
}
|
}
|
|
|
if (shndx_buf != NULL)
|
if (shndx_buf != NULL)
|
{
|
{
|
shndx_hdr->contents = NULL;
|
shndx_hdr->contents = NULL;
|
free (shndx_buf);
|
free (shndx_buf);
|
}
|
}
|
|
|
if (free_intsyms != NULL)
|
if (free_intsyms != NULL)
|
{
|
{
|
if (! link_info->keep_memory)
|
if (! link_info->keep_memory)
|
free (free_intsyms);
|
free (free_intsyms);
|
/* Cache the symbols for elf_link_input_bfd. */
|
/* Cache the symbols for elf_link_input_bfd. */
|
else
|
else
|
{
|
{
|
symtab_hdr->contents = NULL /* (unsigned char *) intsyms*/;
|
symtab_hdr->contents = NULL /* (unsigned char *) intsyms*/;
|
}
|
}
|
|
|
free_intsyms = NULL;
|
free_intsyms = NULL;
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
|
|
error_return:
|
error_return:
|
if (free_relocs != NULL)
|
if (free_relocs != NULL)
|
free (free_relocs);
|
free (free_relocs);
|
if (free_contents != NULL)
|
if (free_contents != NULL)
|
free (free_contents);
|
free (free_contents);
|
if (shndx_buf != NULL)
|
if (shndx_buf != NULL)
|
{
|
{
|
shndx_hdr->contents = NULL;
|
shndx_hdr->contents = NULL;
|
free (shndx_buf);
|
free (shndx_buf);
|
}
|
}
|
if (free_intsyms != NULL)
|
if (free_intsyms != NULL)
|
free (free_intsyms);
|
free (free_intsyms);
|
return FALSE;
|
return FALSE;
|
}
|
}
|
|
|
/* Delete some bytes from a section while relaxing. */
|
/* Delete some bytes from a section while relaxing. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
m32c_elf_relax_delete_bytes
|
m32c_elf_relax_delete_bytes
|
(bfd * abfd,
|
(bfd * abfd,
|
asection * sec,
|
asection * sec,
|
bfd_vma addr,
|
bfd_vma addr,
|
int count)
|
int count)
|
{
|
{
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *symtab_hdr;
|
Elf_Internal_Shdr *shndx_hdr;
|
Elf_Internal_Shdr *shndx_hdr;
|
int sec_shndx;
|
int sec_shndx;
|
bfd_byte *contents;
|
bfd_byte *contents;
|
Elf_Internal_Rela *irel;
|
Elf_Internal_Rela *irel;
|
Elf_Internal_Rela *irelend;
|
Elf_Internal_Rela *irelend;
|
bfd_vma toaddr;
|
bfd_vma toaddr;
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Sym *isym;
|
Elf_Internal_Sym *isymend;
|
Elf_Internal_Sym *isymend;
|
Elf_Internal_Sym *intsyms;
|
Elf_Internal_Sym *intsyms;
|
Elf_External_Sym_Shndx *shndx_buf;
|
Elf_External_Sym_Shndx *shndx_buf;
|
Elf_External_Sym_Shndx *shndx;
|
Elf_External_Sym_Shndx *shndx;
|
struct elf_link_hash_entry ** sym_hashes;
|
struct elf_link_hash_entry ** sym_hashes;
|
struct elf_link_hash_entry ** end_hashes;
|
struct elf_link_hash_entry ** end_hashes;
|
unsigned int symcount;
|
unsigned int symcount;
|
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
contents = elf_section_data (sec)->this_hdr.contents;
|
|
|
toaddr = sec->size;
|
toaddr = sec->size;
|
|
|
irel = elf_section_data (sec)->relocs;
|
irel = elf_section_data (sec)->relocs;
|
irelend = irel + sec->reloc_count;
|
irelend = irel + sec->reloc_count;
|
|
|
/* Actually delete the bytes. */
|
/* Actually delete the bytes. */
|
memmove (contents + addr, contents + addr + count, (size_t) (toaddr - addr - count));
|
memmove (contents + addr, contents + addr + count, (size_t) (toaddr - addr - count));
|
sec->size -= count;
|
sec->size -= count;
|
|
|
/* Adjust all the relocs. */
|
/* Adjust all the relocs. */
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel ++)
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel ++)
|
{
|
{
|
/* Get the new reloc address. */
|
/* Get the new reloc address. */
|
if (irel->r_offset > addr && irel->r_offset < toaddr)
|
if (irel->r_offset > addr && irel->r_offset < toaddr)
|
irel->r_offset -= count;
|
irel->r_offset -= count;
|
|
|
if (ELF32_R_TYPE(irel->r_info) == R_M32C_RL_JUMP
|
if (ELF32_R_TYPE(irel->r_info) == R_M32C_RL_JUMP
|
&& irel->r_addend == 0x10 /* one byte insn, no relocs */
|
&& irel->r_addend == 0x10 /* one byte insn, no relocs */
|
&& irel->r_offset + 1 < addr
|
&& irel->r_offset + 1 < addr
|
&& irel->r_offset + 7 > addr)
|
&& irel->r_offset + 7 > addr)
|
{
|
{
|
bfd_vma disp;
|
bfd_vma disp;
|
unsigned char *insn = &contents[irel->r_offset];
|
unsigned char *insn = &contents[irel->r_offset];
|
disp = *insn;
|
disp = *insn;
|
/* This is a JMP.S, which we have to manually update. */
|
/* This is a JMP.S, which we have to manually update. */
|
if (elf32_m32c_machine (abfd) == bfd_mach_m16c)
|
if (elf32_m32c_machine (abfd) == bfd_mach_m16c)
|
{
|
{
|
if ((*insn & 0xf8) != 0x60)
|
if ((*insn & 0xf8) != 0x60)
|
continue;
|
continue;
|
disp = (disp & 7);
|
disp = (disp & 7);
|
}
|
}
|
else
|
else
|
{
|
{
|
if ((*insn & 0xce) != 0x4a)
|
if ((*insn & 0xce) != 0x4a)
|
continue;
|
continue;
|
disp = ((disp & 0x30) >> 3) | (disp & 1);
|
disp = ((disp & 0x30) >> 3) | (disp & 1);
|
}
|
}
|
if (irel->r_offset + disp + 2 >= addr+count)
|
if (irel->r_offset + disp + 2 >= addr+count)
|
{
|
{
|
disp -= count;
|
disp -= count;
|
if (elf32_m32c_machine (abfd) == bfd_mach_m16c)
|
if (elf32_m32c_machine (abfd) == bfd_mach_m16c)
|
{
|
{
|
*insn = (*insn & 0xf8) | disp;
|
*insn = (*insn & 0xf8) | disp;
|
}
|
}
|
else
|
else
|
{
|
{
|
*insn = (*insn & 0xce) | ((disp & 6) << 3) | (disp & 1);
|
*insn = (*insn & 0xce) | ((disp & 6) << 3) | (disp & 1);
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Adjust the local symbols defined in this section. */
|
/* Adjust the local symbols defined in this section. */
|
symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
|
symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
|
intsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
intsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
isym = intsyms;
|
isym = intsyms;
|
isymend = isym + symtab_hdr->sh_info;
|
isymend = isym + symtab_hdr->sh_info;
|
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
shndx_hdr = & elf_tdata (abfd)->symtab_shndx_hdr;
|
shndx_hdr = & elf_tdata (abfd)->symtab_shndx_hdr;
|
shndx_buf = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
|
shndx_buf = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
|
shndx = shndx_buf;
|
shndx = shndx_buf;
|
|
|
for (; isym < isymend; isym++, shndx = (shndx ? shndx + 1 : NULL))
|
for (; isym < isymend; isym++, shndx = (shndx ? shndx + 1 : NULL))
|
{
|
{
|
/* If the symbol is in the range of memory we just moved, we
|
/* If the symbol is in the range of memory we just moved, we
|
have to adjust its value. */
|
have to adjust its value. */
|
if ((int) isym->st_shndx == sec_shndx
|
if ((int) isym->st_shndx == sec_shndx
|
&& isym->st_value > addr
|
&& isym->st_value > addr
|
&& isym->st_value < toaddr)
|
&& isym->st_value < toaddr)
|
{
|
{
|
isym->st_value -= count;
|
isym->st_value -= count;
|
}
|
}
|
/* If the symbol *spans* the bytes we just deleted (i.e. it's
|
/* If the symbol *spans* the bytes we just deleted (i.e. it's
|
*end* is in the moved bytes but it's *start* isn't), then we
|
*end* is in the moved bytes but it's *start* isn't), then we
|
must adjust its size. */
|
must adjust its size. */
|
if ((int) isym->st_shndx == sec_shndx
|
if ((int) isym->st_shndx == sec_shndx
|
&& isym->st_value < addr
|
&& isym->st_value < addr
|
&& isym->st_value + isym->st_size > addr
|
&& isym->st_value + isym->st_size > addr
|
&& isym->st_value + isym->st_size < toaddr)
|
&& isym->st_value + isym->st_size < toaddr)
|
{
|
{
|
isym->st_size -= count;
|
isym->st_size -= count;
|
}
|
}
|
}
|
}
|
|
|
/* Now adjust the global symbols defined in this section. */
|
/* Now adjust the global symbols defined in this section. */
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
- symtab_hdr->sh_info);
|
- symtab_hdr->sh_info);
|
sym_hashes = elf_sym_hashes (abfd);
|
sym_hashes = elf_sym_hashes (abfd);
|
// sym_hashes += symtab_hdr->sh_info;
|
// sym_hashes += symtab_hdr->sh_info;
|
end_hashes = sym_hashes + symcount;
|
end_hashes = sym_hashes + symcount;
|
|
|
for (; sym_hashes < end_hashes; sym_hashes ++)
|
for (; sym_hashes < end_hashes; sym_hashes ++)
|
{
|
{
|
struct elf_link_hash_entry * sym_hash = * sym_hashes;
|
struct elf_link_hash_entry * sym_hash = * sym_hashes;
|
|
|
if (sym_hash &&
|
if (sym_hash &&
|
(sym_hash->root.type == bfd_link_hash_defined
|
(sym_hash->root.type == bfd_link_hash_defined
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
&& sym_hash->root.u.def.section == sec)
|
&& sym_hash->root.u.def.section == sec)
|
{
|
{
|
if (sym_hash->root.u.def.value > addr
|
if (sym_hash->root.u.def.value > addr
|
&& sym_hash->root.u.def.value < toaddr)
|
&& sym_hash->root.u.def.value < toaddr)
|
{
|
{
|
sym_hash->root.u.def.value -= count;
|
sym_hash->root.u.def.value -= count;
|
}
|
}
|
if (sym_hash->root.u.def.value < addr
|
if (sym_hash->root.u.def.value < addr
|
&& sym_hash->root.u.def.value + sym_hash->size > addr
|
&& sym_hash->root.u.def.value + sym_hash->size > addr
|
&& sym_hash->root.u.def.value + sym_hash->size < toaddr)
|
&& sym_hash->root.u.def.value + sym_hash->size < toaddr)
|
{
|
{
|
sym_hash->size -= count;
|
sym_hash->size -= count;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
/* This is for versions of gcc prior to 4.3. */
|
/* This is for versions of gcc prior to 4.3. */
|
static unsigned int
|
static unsigned int
|
_bfd_m32c_elf_eh_frame_address_size (bfd *abfd, asection *sec ATTRIBUTE_UNUSED)
|
_bfd_m32c_elf_eh_frame_address_size (bfd *abfd, asection *sec ATTRIBUTE_UNUSED)
|
{
|
{
|
if ((elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK) == EF_M32C_CPU_M16C)
|
if ((elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK) == EF_M32C_CPU_M16C)
|
return 2;
|
return 2;
|
return 4;
|
return 4;
|
}
|
}
|
|
|
|
|
|
|
#define ELF_ARCH bfd_arch_m32c
|
#define ELF_ARCH bfd_arch_m32c
|
#define ELF_MACHINE_CODE EM_M32C
|
#define ELF_MACHINE_CODE EM_M32C
|
#define ELF_MACHINE_ALT1 EM_M32C_OLD
|
#define ELF_MACHINE_ALT1 EM_M32C_OLD
|
#define ELF_MAXPAGESIZE 0x100
|
#define ELF_MAXPAGESIZE 0x100
|
|
|
#if 0
|
#if 0
|
#define TARGET_BIG_SYM bfd_elf32_m32c_vec
|
#define TARGET_BIG_SYM bfd_elf32_m32c_vec
|
#define TARGET_BIG_NAME "elf32-m32c"
|
#define TARGET_BIG_NAME "elf32-m32c"
|
#else
|
#else
|
#define TARGET_LITTLE_SYM bfd_elf32_m32c_vec
|
#define TARGET_LITTLE_SYM bfd_elf32_m32c_vec
|
#define TARGET_LITTLE_NAME "elf32-m32c"
|
#define TARGET_LITTLE_NAME "elf32-m32c"
|
#endif
|
#endif
|
|
|
#define elf_info_to_howto_rel NULL
|
#define elf_info_to_howto_rel NULL
|
#define elf_info_to_howto m32c_info_to_howto_rela
|
#define elf_info_to_howto m32c_info_to_howto_rela
|
#define elf_backend_object_p m32c_elf_object_p
|
#define elf_backend_object_p m32c_elf_object_p
|
#define elf_backend_relocate_section m32c_elf_relocate_section
|
#define elf_backend_relocate_section m32c_elf_relocate_section
|
#define elf_backend_check_relocs m32c_elf_check_relocs
|
#define elf_backend_check_relocs m32c_elf_check_relocs
|
#define elf_backend_object_p m32c_elf_object_p
|
#define elf_backend_object_p m32c_elf_object_p
|
#define elf_symbol_leading_char ('_')
|
#define elf_symbol_leading_char ('_')
|
#define elf_backend_always_size_sections \
|
#define elf_backend_always_size_sections \
|
m32c_elf_always_size_sections
|
m32c_elf_always_size_sections
|
#define elf_backend_finish_dynamic_sections \
|
#define elf_backend_finish_dynamic_sections \
|
m32c_elf_finish_dynamic_sections
|
m32c_elf_finish_dynamic_sections
|
|
|
#define elf_backend_can_gc_sections 1
|
#define elf_backend_can_gc_sections 1
|
#define elf_backend_eh_frame_address_size _bfd_m32c_elf_eh_frame_address_size
|
#define elf_backend_eh_frame_address_size _bfd_m32c_elf_eh_frame_address_size
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup m32c_reloc_type_lookup
|
#define bfd_elf32_bfd_reloc_type_lookup m32c_reloc_type_lookup
|
#define bfd_elf32_bfd_reloc_name_lookup m32c_reloc_name_lookup
|
#define bfd_elf32_bfd_reloc_name_lookup m32c_reloc_name_lookup
|
#define bfd_elf32_bfd_relax_section m32c_elf_relax_section
|
#define bfd_elf32_bfd_relax_section m32c_elf_relax_section
|
#define bfd_elf32_bfd_set_private_flags m32c_elf_set_private_flags
|
#define bfd_elf32_bfd_set_private_flags m32c_elf_set_private_flags
|
#define bfd_elf32_bfd_merge_private_bfd_data m32c_elf_merge_private_bfd_data
|
#define bfd_elf32_bfd_merge_private_bfd_data m32c_elf_merge_private_bfd_data
|
#define bfd_elf32_bfd_print_private_bfd_data m32c_elf_print_private_bfd_data
|
#define bfd_elf32_bfd_print_private_bfd_data m32c_elf_print_private_bfd_data
|
|
|
#include "elf32-target.h"
|
#include "elf32-target.h"
|
|
|
