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markom |
/* AVR-specific support for 32-bit ELF
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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Contributed by Denis Chertykov <denisc@overta.ru>
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/avr.h"
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void avr_info_to_howto_rela
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
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static asection *elf32_avr_gc_mark_hook
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PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *));
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static boolean elf32_avr_gc_sweep_hook
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static boolean elf32_avr_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static bfd_reloc_status_type avr_final_link_relocate
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PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, bfd_vma));
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static boolean elf32_avr_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static void bfd_elf_avr_final_write_processing PARAMS ((bfd *, boolean));
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static boolean elf32_avr_object_p PARAMS ((bfd *));
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/* Use RELA instead of REL */
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#undef USE_REL
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static reloc_howto_type elf_avr_howto_table[] =
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{
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HOWTO (R_AVR_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_NONE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_AVR_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_32", /* name */
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false, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 7 bit PC relative relocation. */
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HOWTO (R_AVR_7_PCREL, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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7, /* bitsize */
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true, /* pc_relative */
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3, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_7_PCREL", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 13 bit PC relative relocation. */
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HOWTO (R_AVR_13_PCREL, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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13, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_13_PCREL", /* name */
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false, /* partial_inplace */
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0xfff, /* src_mask */
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0xfff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 16 bit absolute relocation. */
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HOWTO (R_AVR_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit absolute relocation for command address. */
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HOWTO (R_AVR_16_PM, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_16_PM", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A low 8 bit absolute relocation of 16 bit address.
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For LDI command. */
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HOWTO (R_AVR_LO8_LDI, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_LO8_LDI", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A high 8 bit absolute relocation of 16 bit address.
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For LDI command. */
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HOWTO (R_AVR_HI8_LDI, /* type */
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8, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_HI8_LDI", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A high 6 bit absolute relocation of 22 bit address.
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For LDI command. */
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HOWTO (R_AVR_HH8_LDI, /* type */
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16, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_HH8_LDI", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A negative low 8 bit absolute relocation of 16 bit address.
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For LDI command. */
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HOWTO (R_AVR_LO8_LDI_NEG, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_LO8_LDI_NEG", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A hegative high 8 bit absolute relocation of 16 bit address.
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For LDI command. */
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HOWTO (R_AVR_HI8_LDI_NEG, /* type */
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8, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_AVR_HI8_LDI_NEG", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A hegative high 6 bit absolute relocation of 22 bit address.
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For LDI command. */
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HOWTO (R_AVR_HH8_LDI_NEG, /* type */
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16, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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| 228 |
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"R_AVR_HH8_LDI_NEG", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A low 8 bit absolute relocation of 24 bit program memory address.
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For LDI command. */
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HOWTO (R_AVR_LO8_LDI_PM, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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| 239 |
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false, /* pc_relative */
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| 240 |
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0, /* bitpos */
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| 241 |
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complain_overflow_dont, /* complain_on_overflow */
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| 242 |
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bfd_elf_generic_reloc, /* special_function */
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| 243 |
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"R_AVR_LO8_LDI_PM", /* name */
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| 244 |
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false, /* partial_inplace */
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| 245 |
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0xffff, /* src_mask */
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| 246 |
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0xffff, /* dst_mask */
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| 247 |
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false), /* pcrel_offset */
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| 248 |
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/* A high 8 bit absolute relocation of 16 bit program memory address.
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| 249 |
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For LDI command. */
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HOWTO (R_AVR_HI8_LDI_PM, /* type */
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| 251 |
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9, /* rightshift */
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| 252 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 253 |
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8, /* bitsize */
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| 254 |
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false, /* pc_relative */
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| 255 |
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0, /* bitpos */
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| 256 |
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complain_overflow_dont, /* complain_on_overflow */
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| 257 |
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bfd_elf_generic_reloc, /* special_function */
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| 258 |
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"R_AVR_HI8_LDI_PM", /* name */
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| 259 |
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false, /* partial_inplace */
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| 260 |
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0xffff, /* src_mask */
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| 261 |
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0xffff, /* dst_mask */
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| 262 |
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false), /* pcrel_offset */
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| 263 |
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/* A high 8 bit absolute relocation of 24 bit program memory address.
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| 264 |
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For LDI command. */
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| 265 |
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HOWTO (R_AVR_HH8_LDI_PM, /* type */
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| 266 |
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17, /* rightshift */
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| 267 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 268 |
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8, /* bitsize */
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| 269 |
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false, /* pc_relative */
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| 270 |
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0, /* bitpos */
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| 271 |
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complain_overflow_dont, /* complain_on_overflow */
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| 272 |
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bfd_elf_generic_reloc, /* special_function */
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| 273 |
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"R_AVR_HH8_LDI_PM", /* name */
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| 274 |
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false, /* partial_inplace */
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| 275 |
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0xffff, /* src_mask */
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| 276 |
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0xffff, /* dst_mask */
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| 277 |
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false), /* pcrel_offset */
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| 278 |
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/* A low 8 bit absolute relocation of a negative 24 bit
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| 279 |
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program memory address. For LDI command. */
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| 280 |
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HOWTO (R_AVR_LO8_LDI_PM_NEG, /* type */
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| 281 |
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1, /* rightshift */
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| 282 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 283 |
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8, /* bitsize */
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| 284 |
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false, /* pc_relative */
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| 285 |
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0, /* bitpos */
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| 286 |
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complain_overflow_dont, /* complain_on_overflow */
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| 287 |
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bfd_elf_generic_reloc, /* special_function */
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| 288 |
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"R_AVR_LO8_LDI_PM_NEG", /* name */
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| 289 |
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false, /* partial_inplace */
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| 290 |
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0xffff, /* src_mask */
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| 291 |
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0xffff, /* dst_mask */
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| 292 |
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false), /* pcrel_offset */
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| 293 |
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/* A high 8 bit absolute relocation of a negative 16 bit
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| 294 |
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program memory address. For LDI command. */
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| 295 |
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HOWTO (R_AVR_HI8_LDI_PM_NEG, /* type */
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| 296 |
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9, /* rightshift */
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| 297 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 298 |
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8, /* bitsize */
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| 299 |
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false, /* pc_relative */
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| 300 |
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0, /* bitpos */
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| 301 |
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complain_overflow_dont, /* complain_on_overflow */
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| 302 |
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bfd_elf_generic_reloc, /* special_function */
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| 303 |
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"R_AVR_HI8_LDI_PM_NEG", /* name */
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| 304 |
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false, /* partial_inplace */
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| 305 |
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0xffff, /* src_mask */
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| 306 |
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0xffff, /* dst_mask */
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| 307 |
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false), /* pcrel_offset */
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| 308 |
|
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/* A high 8 bit absolute relocation of a negative 24 bit
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| 309 |
|
|
program memory address. For LDI command. */
|
| 310 |
|
|
HOWTO (R_AVR_HH8_LDI_PM_NEG, /* type */
|
| 311 |
|
|
17, /* rightshift */
|
| 312 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 313 |
|
|
8, /* bitsize */
|
| 314 |
|
|
false, /* pc_relative */
|
| 315 |
|
|
0, /* bitpos */
|
| 316 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 317 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 318 |
|
|
"R_AVR_HH8_LDI_PM_NEG", /* name */
|
| 319 |
|
|
false, /* partial_inplace */
|
| 320 |
|
|
0xffff, /* src_mask */
|
| 321 |
|
|
0xffff, /* dst_mask */
|
| 322 |
|
|
false), /* pcrel_offset */
|
| 323 |
|
|
/* Relocation for CALL command in ATmega. */
|
| 324 |
|
|
HOWTO (R_AVR_CALL, /* type */
|
| 325 |
|
|
1, /* rightshift */
|
| 326 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 327 |
|
|
23, /* bitsize */
|
| 328 |
|
|
false, /* pc_relative */
|
| 329 |
|
|
0, /* bitpos */
|
| 330 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 331 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 332 |
|
|
"R_AVR_CALL", /* name */
|
| 333 |
|
|
false, /* partial_inplace */
|
| 334 |
|
|
0xffffffff, /* src_mask */
|
| 335 |
|
|
0xffffffff, /* dst_mask */
|
| 336 |
|
|
false) /* pcrel_offset */
|
| 337 |
|
|
};
|
| 338 |
|
|
|
| 339 |
|
|
/* Map BFD reloc types to AVR ELF reloc types. */
|
| 340 |
|
|
|
| 341 |
|
|
struct avr_reloc_map
|
| 342 |
|
|
{
|
| 343 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
| 344 |
|
|
unsigned int elf_reloc_val;
|
| 345 |
|
|
};
|
| 346 |
|
|
|
| 347 |
|
|
static const struct avr_reloc_map avr_reloc_map[] =
|
| 348 |
|
|
{
|
| 349 |
|
|
{ BFD_RELOC_NONE, R_AVR_NONE },
|
| 350 |
|
|
{ BFD_RELOC_32, R_AVR_32 },
|
| 351 |
|
|
{ BFD_RELOC_AVR_7_PCREL, R_AVR_7_PCREL },
|
| 352 |
|
|
{ BFD_RELOC_AVR_13_PCREL, R_AVR_13_PCREL },
|
| 353 |
|
|
{ BFD_RELOC_16, R_AVR_16 },
|
| 354 |
|
|
{ BFD_RELOC_AVR_16_PM, R_AVR_16_PM },
|
| 355 |
|
|
{ BFD_RELOC_AVR_LO8_LDI, R_AVR_LO8_LDI},
|
| 356 |
|
|
{ BFD_RELOC_AVR_HI8_LDI, R_AVR_HI8_LDI },
|
| 357 |
|
|
{ BFD_RELOC_AVR_HH8_LDI, R_AVR_HH8_LDI },
|
| 358 |
|
|
{ BFD_RELOC_AVR_LO8_LDI_NEG, R_AVR_LO8_LDI_NEG },
|
| 359 |
|
|
{ BFD_RELOC_AVR_HI8_LDI_NEG, R_AVR_HI8_LDI_NEG },
|
| 360 |
|
|
{ BFD_RELOC_AVR_HH8_LDI_NEG, R_AVR_HH8_LDI_NEG },
|
| 361 |
|
|
{ BFD_RELOC_AVR_LO8_LDI_PM, R_AVR_LO8_LDI_PM },
|
| 362 |
|
|
{ BFD_RELOC_AVR_HI8_LDI_PM, R_AVR_HI8_LDI_PM },
|
| 363 |
|
|
{ BFD_RELOC_AVR_HH8_LDI_PM, R_AVR_HH8_LDI_PM },
|
| 364 |
|
|
{ BFD_RELOC_AVR_LO8_LDI_PM_NEG, R_AVR_LO8_LDI_PM_NEG },
|
| 365 |
|
|
{ BFD_RELOC_AVR_HI8_LDI_PM_NEG, R_AVR_HI8_LDI_PM_NEG },
|
| 366 |
|
|
{ BFD_RELOC_AVR_HH8_LDI_PM_NEG, R_AVR_HH8_LDI_PM_NEG },
|
| 367 |
|
|
{ BFD_RELOC_AVR_CALL, R_AVR_CALL }
|
| 368 |
|
|
};
|
| 369 |
|
|
|
| 370 |
|
|
static reloc_howto_type *
|
| 371 |
|
|
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
|
| 372 |
|
|
bfd *abfd;
|
| 373 |
|
|
bfd_reloc_code_real_type code;
|
| 374 |
|
|
{
|
| 375 |
|
|
unsigned int i;
|
| 376 |
|
|
|
| 377 |
|
|
for (i = 0;
|
| 378 |
|
|
i < sizeof (avr_reloc_map) / sizeof (struct avr_reloc_map);
|
| 379 |
|
|
i++)
|
| 380 |
|
|
{
|
| 381 |
|
|
if (avr_reloc_map[i].bfd_reloc_val == code)
|
| 382 |
|
|
return &elf_avr_howto_table[avr_reloc_map[i].elf_reloc_val];
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
return NULL;
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
/* Set the howto pointer for an AVR ELF reloc. */
|
| 389 |
|
|
|
| 390 |
|
|
static void
|
| 391 |
|
|
avr_info_to_howto_rela (abfd, cache_ptr, dst)
|
| 392 |
|
|
bfd *abfd;
|
| 393 |
|
|
arelent *cache_ptr;
|
| 394 |
|
|
Elf32_Internal_Rela *dst;
|
| 395 |
|
|
{
|
| 396 |
|
|
unsigned int r_type;
|
| 397 |
|
|
|
| 398 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
| 399 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_AVR_max);
|
| 400 |
|
|
cache_ptr->howto = &elf_avr_howto_table[r_type];
|
| 401 |
|
|
}
|
| 402 |
|
|
|
| 403 |
|
|
static asection *
|
| 404 |
|
|
elf32_avr_gc_mark_hook (abfd, info, rel, h, sym)
|
| 405 |
|
|
bfd *abfd;
|
| 406 |
|
|
struct bfd_link_info *info;
|
| 407 |
|
|
Elf_Internal_Rela *rel;
|
| 408 |
|
|
struct elf_link_hash_entry *h;
|
| 409 |
|
|
Elf_Internal_Sym *sym;
|
| 410 |
|
|
{
|
| 411 |
|
|
if (h != NULL)
|
| 412 |
|
|
{
|
| 413 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 414 |
|
|
{
|
| 415 |
|
|
default:
|
| 416 |
|
|
switch (h->root.type)
|
| 417 |
|
|
{
|
| 418 |
|
|
case bfd_link_hash_defined:
|
| 419 |
|
|
case bfd_link_hash_defweak:
|
| 420 |
|
|
return h->root.u.def.section;
|
| 421 |
|
|
|
| 422 |
|
|
case bfd_link_hash_common:
|
| 423 |
|
|
return h->root.u.c.p->section;
|
| 424 |
|
|
|
| 425 |
|
|
default:
|
| 426 |
|
|
break;
|
| 427 |
|
|
}
|
| 428 |
|
|
}
|
| 429 |
|
|
}
|
| 430 |
|
|
else
|
| 431 |
|
|
{
|
| 432 |
|
|
if (!(elf_bad_symtab (abfd)
|
| 433 |
|
|
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
|
| 434 |
|
|
&& !((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
|
| 435 |
|
|
&& sym->st_shndx != SHN_COMMON))
|
| 436 |
|
|
{
|
| 437 |
|
|
return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
| 438 |
|
|
}
|
| 439 |
|
|
}
|
| 440 |
|
|
return NULL;
|
| 441 |
|
|
}
|
| 442 |
|
|
|
| 443 |
|
|
static boolean
|
| 444 |
|
|
elf32_avr_gc_sweep_hook (abfd, info, sec, relocs)
|
| 445 |
|
|
bfd *abfd;
|
| 446 |
|
|
struct bfd_link_info *info;
|
| 447 |
|
|
asection *sec;
|
| 448 |
|
|
const Elf_Internal_Rela *relocs;
|
| 449 |
|
|
{
|
| 450 |
|
|
/* We don't use got and plt entries for avr. */
|
| 451 |
|
|
return true;
|
| 452 |
|
|
}
|
| 453 |
|
|
|
| 454 |
|
|
/* Look through the relocs for a section during the first phase.
|
| 455 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
| 456 |
|
|
virtual table relocs for gc. */
|
| 457 |
|
|
|
| 458 |
|
|
static boolean
|
| 459 |
|
|
elf32_avr_check_relocs (abfd, info, sec, relocs)
|
| 460 |
|
|
bfd *abfd;
|
| 461 |
|
|
struct bfd_link_info *info;
|
| 462 |
|
|
asection *sec;
|
| 463 |
|
|
const Elf_Internal_Rela *relocs;
|
| 464 |
|
|
{
|
| 465 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 466 |
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
| 467 |
|
|
const Elf_Internal_Rela *rel;
|
| 468 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 469 |
|
|
|
| 470 |
|
|
if (info->relocateable)
|
| 471 |
|
|
return true;
|
| 472 |
|
|
|
| 473 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 474 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 475 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
|
| 476 |
|
|
if (!elf_bad_symtab (abfd))
|
| 477 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
| 478 |
|
|
|
| 479 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 480 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 481 |
|
|
{
|
| 482 |
|
|
struct elf_link_hash_entry *h;
|
| 483 |
|
|
unsigned long r_symndx;
|
| 484 |
|
|
|
| 485 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 486 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 487 |
|
|
h = NULL;
|
| 488 |
|
|
else
|
| 489 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
return true;
|
| 493 |
|
|
}
|
| 494 |
|
|
|
| 495 |
|
|
/* Perform a single relocation. By default we use the standard BFD
|
| 496 |
|
|
routines, but a few relocs, we have to do them ourselves. */
|
| 497 |
|
|
|
| 498 |
|
|
static bfd_reloc_status_type
|
| 499 |
|
|
avr_final_link_relocate (howto, input_bfd, input_section,
|
| 500 |
|
|
contents, rel, relocation)
|
| 501 |
|
|
reloc_howto_type * howto;
|
| 502 |
|
|
bfd * input_bfd;
|
| 503 |
|
|
asection * input_section;
|
| 504 |
|
|
bfd_byte * contents;
|
| 505 |
|
|
Elf_Internal_Rela * rel;
|
| 506 |
|
|
bfd_vma relocation;
|
| 507 |
|
|
{
|
| 508 |
|
|
bfd_reloc_status_type r = bfd_reloc_ok;
|
| 509 |
|
|
bfd_vma x;
|
| 510 |
|
|
bfd_signed_vma srel;
|
| 511 |
|
|
|
| 512 |
|
|
switch (howto->type)
|
| 513 |
|
|
{
|
| 514 |
|
|
case R_AVR_7_PCREL:
|
| 515 |
|
|
contents += rel->r_offset;
|
| 516 |
|
|
srel = (bfd_signed_vma) relocation;
|
| 517 |
|
|
srel += rel->r_addend;
|
| 518 |
|
|
srel -= rel->r_offset;
|
| 519 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
| 520 |
|
|
srel -= (input_section->output_section->vma +
|
| 521 |
|
|
input_section->output_offset);
|
| 522 |
|
|
|
| 523 |
|
|
if (srel & 1)
|
| 524 |
|
|
return bfd_reloc_outofrange;
|
| 525 |
|
|
if (srel > ((1 << 7) - 1) || (srel < - (1 << 7)))
|
| 526 |
|
|
return bfd_reloc_overflow;
|
| 527 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 528 |
|
|
x = (x & 0xfc07) | (((srel >> 1) << 3) & 0x3f8);
|
| 529 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 530 |
|
|
break;
|
| 531 |
|
|
|
| 532 |
|
|
case R_AVR_13_PCREL:
|
| 533 |
|
|
contents += rel->r_offset;
|
| 534 |
|
|
srel = (bfd_signed_vma) relocation;
|
| 535 |
|
|
srel += rel->r_addend;
|
| 536 |
|
|
srel -= rel->r_offset;
|
| 537 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
| 538 |
|
|
srel -= (input_section->output_section->vma +
|
| 539 |
|
|
input_section->output_offset);
|
| 540 |
|
|
|
| 541 |
|
|
if (srel & 1)
|
| 542 |
|
|
return bfd_reloc_outofrange;
|
| 543 |
|
|
|
| 544 |
|
|
/* AVR addresses commands as words. */
|
| 545 |
|
|
srel >>= 1;
|
| 546 |
|
|
|
| 547 |
|
|
/* Check for overflow. */
|
| 548 |
|
|
if (srel < -2048 || srel > 2047)
|
| 549 |
|
|
{
|
| 550 |
|
|
/* Apply WRAPAROUND if possible. */
|
| 551 |
|
|
if (bfd_get_mach (input_bfd) == bfd_mach_avr2)
|
| 552 |
|
|
{
|
| 553 |
|
|
if (srel > 2047)
|
| 554 |
|
|
srel -= 4096;
|
| 555 |
|
|
else
|
| 556 |
|
|
srel += 4096;
|
| 557 |
|
|
}
|
| 558 |
|
|
else
|
| 559 |
|
|
return bfd_reloc_overflow;
|
| 560 |
|
|
}
|
| 561 |
|
|
|
| 562 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 563 |
|
|
x = (x & 0xf000) | (srel & 0xfff);
|
| 564 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 565 |
|
|
break;
|
| 566 |
|
|
|
| 567 |
|
|
case R_AVR_LO8_LDI:
|
| 568 |
|
|
contents += rel->r_offset;
|
| 569 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 570 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 571 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 572 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 573 |
|
|
break;
|
| 574 |
|
|
|
| 575 |
|
|
case R_AVR_HI8_LDI:
|
| 576 |
|
|
contents += rel->r_offset;
|
| 577 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 578 |
|
|
srel = (srel >> 8) & 0xff;
|
| 579 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 580 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 581 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 582 |
|
|
break;
|
| 583 |
|
|
|
| 584 |
|
|
case R_AVR_HH8_LDI:
|
| 585 |
|
|
contents += rel->r_offset;
|
| 586 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 587 |
|
|
srel = (srel >> 16) & 0xff;
|
| 588 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 589 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 590 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 591 |
|
|
break;
|
| 592 |
|
|
|
| 593 |
|
|
case R_AVR_LO8_LDI_NEG:
|
| 594 |
|
|
contents += rel->r_offset;
|
| 595 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 596 |
|
|
srel = -srel;
|
| 597 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 598 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 599 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 600 |
|
|
break;
|
| 601 |
|
|
|
| 602 |
|
|
case R_AVR_HI8_LDI_NEG:
|
| 603 |
|
|
contents += rel->r_offset;
|
| 604 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 605 |
|
|
srel = -srel;
|
| 606 |
|
|
srel = (srel >> 8) & 0xff;
|
| 607 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 608 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 609 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 610 |
|
|
break;
|
| 611 |
|
|
|
| 612 |
|
|
case R_AVR_HH8_LDI_NEG:
|
| 613 |
|
|
contents += rel->r_offset;
|
| 614 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 615 |
|
|
srel = -srel;
|
| 616 |
|
|
srel = (srel >> 16) & 0xff;
|
| 617 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 618 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 619 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 620 |
|
|
break;
|
| 621 |
|
|
|
| 622 |
|
|
case R_AVR_LO8_LDI_PM:
|
| 623 |
|
|
contents += rel->r_offset;
|
| 624 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 625 |
|
|
if (srel & 1)
|
| 626 |
|
|
return bfd_reloc_outofrange;
|
| 627 |
|
|
srel = srel >> 1;
|
| 628 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 629 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 630 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 631 |
|
|
break;
|
| 632 |
|
|
|
| 633 |
|
|
case R_AVR_HI8_LDI_PM:
|
| 634 |
|
|
contents += rel->r_offset;
|
| 635 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 636 |
|
|
if (srel & 1)
|
| 637 |
|
|
return bfd_reloc_outofrange;
|
| 638 |
|
|
srel = srel >> 1;
|
| 639 |
|
|
srel = (srel >> 8) & 0xff;
|
| 640 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 641 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 642 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 643 |
|
|
break;
|
| 644 |
|
|
|
| 645 |
|
|
case R_AVR_HH8_LDI_PM:
|
| 646 |
|
|
contents += rel->r_offset;
|
| 647 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 648 |
|
|
if (srel & 1)
|
| 649 |
|
|
return bfd_reloc_outofrange;
|
| 650 |
|
|
srel = srel >> 1;
|
| 651 |
|
|
srel = (srel >> 16) & 0xff;
|
| 652 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 653 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 654 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 655 |
|
|
break;
|
| 656 |
|
|
|
| 657 |
|
|
case R_AVR_LO8_LDI_PM_NEG:
|
| 658 |
|
|
contents += rel->r_offset;
|
| 659 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 660 |
|
|
srel = -srel;
|
| 661 |
|
|
if (srel & 1)
|
| 662 |
|
|
return bfd_reloc_outofrange;
|
| 663 |
|
|
srel = srel >> 1;
|
| 664 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 665 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 666 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 667 |
|
|
break;
|
| 668 |
|
|
|
| 669 |
|
|
case R_AVR_HI8_LDI_PM_NEG:
|
| 670 |
|
|
contents += rel->r_offset;
|
| 671 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 672 |
|
|
srel = -srel;
|
| 673 |
|
|
if (srel & 1)
|
| 674 |
|
|
return bfd_reloc_outofrange;
|
| 675 |
|
|
srel = srel >> 1;
|
| 676 |
|
|
srel = (srel >> 8) & 0xff;
|
| 677 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 678 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 679 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 680 |
|
|
break;
|
| 681 |
|
|
|
| 682 |
|
|
case R_AVR_HH8_LDI_PM_NEG:
|
| 683 |
|
|
contents += rel->r_offset;
|
| 684 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 685 |
|
|
srel = -srel;
|
| 686 |
|
|
if (srel & 1)
|
| 687 |
|
|
return bfd_reloc_outofrange;
|
| 688 |
|
|
srel = srel >> 1;
|
| 689 |
|
|
srel = (srel >> 16) & 0xff;
|
| 690 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 691 |
|
|
x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
|
| 692 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 693 |
|
|
break;
|
| 694 |
|
|
|
| 695 |
|
|
case R_AVR_CALL:
|
| 696 |
|
|
contents += rel->r_offset;
|
| 697 |
|
|
srel = (bfd_signed_vma) relocation + rel->r_addend;
|
| 698 |
|
|
if (srel & 1)
|
| 699 |
|
|
return bfd_reloc_outofrange;
|
| 700 |
|
|
srel = srel >> 1;
|
| 701 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 702 |
|
|
x |= ((srel & 0x10000) | ((srel << 3) & 0x1f00000)) >> 16;
|
| 703 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 704 |
|
|
bfd_put_16 (input_bfd, srel & 0xffff, contents+2);
|
| 705 |
|
|
break;
|
| 706 |
|
|
|
| 707 |
|
|
default:
|
| 708 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 709 |
|
|
contents, rel->r_offset,
|
| 710 |
|
|
relocation, rel->r_addend);
|
| 711 |
|
|
}
|
| 712 |
|
|
|
| 713 |
|
|
return r;
|
| 714 |
|
|
}
|
| 715 |
|
|
|
| 716 |
|
|
/* Relocate an AVR ELF section. */
|
| 717 |
|
|
static boolean
|
| 718 |
|
|
elf32_avr_relocate_section (output_bfd, info, input_bfd, input_section,
|
| 719 |
|
|
contents, relocs, local_syms, local_sections)
|
| 720 |
|
|
bfd *output_bfd;
|
| 721 |
|
|
struct bfd_link_info *info;
|
| 722 |
|
|
bfd *input_bfd;
|
| 723 |
|
|
asection *input_section;
|
| 724 |
|
|
bfd_byte *contents;
|
| 725 |
|
|
Elf_Internal_Rela *relocs;
|
| 726 |
|
|
Elf_Internal_Sym *local_syms;
|
| 727 |
|
|
asection **local_sections;
|
| 728 |
|
|
{
|
| 729 |
|
|
Elf_Internal_Shdr * symtab_hdr;
|
| 730 |
|
|
struct elf_link_hash_entry ** sym_hashes;
|
| 731 |
|
|
Elf_Internal_Rela * rel;
|
| 732 |
|
|
Elf_Internal_Rela * relend;
|
| 733 |
|
|
|
| 734 |
|
|
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
| 735 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 736 |
|
|
relend = relocs + input_section->reloc_count;
|
| 737 |
|
|
|
| 738 |
|
|
for (rel = relocs; rel < relend; rel ++)
|
| 739 |
|
|
{
|
| 740 |
|
|
reloc_howto_type * howto;
|
| 741 |
|
|
unsigned long r_symndx;
|
| 742 |
|
|
Elf_Internal_Sym * sym;
|
| 743 |
|
|
asection * sec;
|
| 744 |
|
|
struct elf_link_hash_entry * h;
|
| 745 |
|
|
bfd_vma relocation;
|
| 746 |
|
|
bfd_reloc_status_type r;
|
| 747 |
|
|
const char * name = NULL;
|
| 748 |
|
|
int r_type;
|
| 749 |
|
|
|
| 750 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 751 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 752 |
|
|
|
| 753 |
|
|
if (info->relocateable)
|
| 754 |
|
|
{
|
| 755 |
|
|
/* This is a relocateable link. We don't have to change
|
| 756 |
|
|
anything, unless the reloc is against a section symbol,
|
| 757 |
|
|
in which case we have to adjust according to where the
|
| 758 |
|
|
section symbol winds up in the output section. */
|
| 759 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 760 |
|
|
{
|
| 761 |
|
|
sym = local_syms + r_symndx;
|
| 762 |
|
|
|
| 763 |
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
| 764 |
|
|
{
|
| 765 |
|
|
sec = local_sections [r_symndx];
|
| 766 |
|
|
rel->r_addend += sec->output_offset + sym->st_value;
|
| 767 |
|
|
}
|
| 768 |
|
|
}
|
| 769 |
|
|
|
| 770 |
|
|
continue;
|
| 771 |
|
|
}
|
| 772 |
|
|
|
| 773 |
|
|
/* This is a final link. */
|
| 774 |
|
|
howto = elf_avr_howto_table + ELF32_R_TYPE (rel->r_info);
|
| 775 |
|
|
h = NULL;
|
| 776 |
|
|
sym = NULL;
|
| 777 |
|
|
sec = NULL;
|
| 778 |
|
|
|
| 779 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 780 |
|
|
{
|
| 781 |
|
|
sym = local_syms + r_symndx;
|
| 782 |
|
|
sec = local_sections [r_symndx];
|
| 783 |
|
|
relocation = (sec->output_section->vma
|
| 784 |
|
|
+ sec->output_offset
|
| 785 |
|
|
+ sym->st_value);
|
| 786 |
|
|
|
| 787 |
|
|
name = bfd_elf_string_from_elf_section
|
| 788 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
| 789 |
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
| 790 |
|
|
}
|
| 791 |
|
|
else
|
| 792 |
|
|
{
|
| 793 |
|
|
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
| 794 |
|
|
|
| 795 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 796 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 797 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 798 |
|
|
|
| 799 |
|
|
name = h->root.root.string;
|
| 800 |
|
|
|
| 801 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 802 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 803 |
|
|
{
|
| 804 |
|
|
sec = h->root.u.def.section;
|
| 805 |
|
|
relocation = (h->root.u.def.value
|
| 806 |
|
|
+ sec->output_section->vma
|
| 807 |
|
|
+ sec->output_offset);
|
| 808 |
|
|
}
|
| 809 |
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
| 810 |
|
|
{
|
| 811 |
|
|
relocation = 0;
|
| 812 |
|
|
}
|
| 813 |
|
|
else
|
| 814 |
|
|
{
|
| 815 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
| 816 |
|
|
(info, h->root.root.string, input_bfd,
|
| 817 |
|
|
input_section, rel->r_offset, true)))
|
| 818 |
|
|
return false;
|
| 819 |
|
|
relocation = 0;
|
| 820 |
|
|
}
|
| 821 |
|
|
}
|
| 822 |
|
|
|
| 823 |
|
|
r = avr_final_link_relocate (howto, input_bfd, input_section,
|
| 824 |
|
|
contents, rel, relocation);
|
| 825 |
|
|
|
| 826 |
|
|
if (r != bfd_reloc_ok)
|
| 827 |
|
|
{
|
| 828 |
|
|
const char * msg = (const char *) NULL;
|
| 829 |
|
|
|
| 830 |
|
|
switch (r)
|
| 831 |
|
|
{
|
| 832 |
|
|
case bfd_reloc_overflow:
|
| 833 |
|
|
r = info->callbacks->reloc_overflow
|
| 834 |
|
|
(info, name, howto->name, (bfd_vma) 0,
|
| 835 |
|
|
input_bfd, input_section, rel->r_offset);
|
| 836 |
|
|
break;
|
| 837 |
|
|
|
| 838 |
|
|
case bfd_reloc_undefined:
|
| 839 |
|
|
r = info->callbacks->undefined_symbol
|
| 840 |
|
|
(info, name, input_bfd, input_section, rel->r_offset, true);
|
| 841 |
|
|
break;
|
| 842 |
|
|
|
| 843 |
|
|
case bfd_reloc_outofrange:
|
| 844 |
|
|
msg = _("internal error: out of range error");
|
| 845 |
|
|
break;
|
| 846 |
|
|
|
| 847 |
|
|
case bfd_reloc_notsupported:
|
| 848 |
|
|
msg = _("internal error: unsupported relocation error");
|
| 849 |
|
|
break;
|
| 850 |
|
|
|
| 851 |
|
|
case bfd_reloc_dangerous:
|
| 852 |
|
|
msg = _("internal error: dangerous relocation");
|
| 853 |
|
|
break;
|
| 854 |
|
|
|
| 855 |
|
|
default:
|
| 856 |
|
|
msg = _("internal error: unknown error");
|
| 857 |
|
|
break;
|
| 858 |
|
|
}
|
| 859 |
|
|
|
| 860 |
|
|
if (msg)
|
| 861 |
|
|
r = info->callbacks->warning
|
| 862 |
|
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
| 863 |
|
|
|
| 864 |
|
|
if (! r)
|
| 865 |
|
|
return false;
|
| 866 |
|
|
}
|
| 867 |
|
|
}
|
| 868 |
|
|
|
| 869 |
|
|
return true;
|
| 870 |
|
|
}
|
| 871 |
|
|
|
| 872 |
|
|
/* The final processing done just before writing out a AVR ELF object
|
| 873 |
|
|
file. This gets the AVR architecture right based on the machine
|
| 874 |
|
|
number. */
|
| 875 |
|
|
|
| 876 |
|
|
static void
|
| 877 |
|
|
bfd_elf_avr_final_write_processing (abfd, linker)
|
| 878 |
|
|
bfd *abfd;
|
| 879 |
|
|
boolean linker ATTRIBUTE_UNUSED;
|
| 880 |
|
|
{
|
| 881 |
|
|
unsigned long val;
|
| 882 |
|
|
|
| 883 |
|
|
switch (bfd_get_mach (abfd))
|
| 884 |
|
|
{
|
| 885 |
|
|
default:
|
| 886 |
|
|
case bfd_mach_avr2:
|
| 887 |
|
|
val = E_AVR_MACH_AVR2;
|
| 888 |
|
|
break;
|
| 889 |
|
|
|
| 890 |
|
|
case bfd_mach_avr1:
|
| 891 |
|
|
val = E_AVR_MACH_AVR1;
|
| 892 |
|
|
break;
|
| 893 |
|
|
|
| 894 |
|
|
case bfd_mach_avr3:
|
| 895 |
|
|
val = E_AVR_MACH_AVR3;
|
| 896 |
|
|
break;
|
| 897 |
|
|
|
| 898 |
|
|
case bfd_mach_avr4:
|
| 899 |
|
|
val = E_AVR_MACH_AVR4;
|
| 900 |
|
|
break;
|
| 901 |
|
|
|
| 902 |
|
|
}
|
| 903 |
|
|
|
| 904 |
|
|
elf_elfheader (abfd)->e_machine = EM_AVR;
|
| 905 |
|
|
elf_elfheader (abfd)->e_flags &= ~ EF_AVR_MACH;
|
| 906 |
|
|
elf_elfheader (abfd)->e_flags |= val;
|
| 907 |
|
|
}
|
| 908 |
|
|
|
| 909 |
|
|
/* Set the right machine number. */
|
| 910 |
|
|
|
| 911 |
|
|
static boolean
|
| 912 |
|
|
elf32_avr_object_p (abfd)
|
| 913 |
|
|
bfd *abfd;
|
| 914 |
|
|
{
|
| 915 |
|
|
int e_set = bfd_mach_avr2;
|
| 916 |
|
|
if (elf_elfheader (abfd)->e_machine == EM_AVR)
|
| 917 |
|
|
{
|
| 918 |
|
|
int e_mach = elf_elfheader (abfd)->e_flags & EF_AVR_MACH;
|
| 919 |
|
|
switch (e_mach)
|
| 920 |
|
|
{
|
| 921 |
|
|
default:
|
| 922 |
|
|
case E_AVR_MACH_AVR2:
|
| 923 |
|
|
e_set = bfd_mach_avr2;
|
| 924 |
|
|
break;
|
| 925 |
|
|
|
| 926 |
|
|
case E_AVR_MACH_AVR1:
|
| 927 |
|
|
e_set = bfd_mach_avr1;
|
| 928 |
|
|
break;
|
| 929 |
|
|
|
| 930 |
|
|
case E_AVR_MACH_AVR3:
|
| 931 |
|
|
e_set = bfd_mach_avr3;
|
| 932 |
|
|
break;
|
| 933 |
|
|
|
| 934 |
|
|
case E_AVR_MACH_AVR4:
|
| 935 |
|
|
e_set = bfd_mach_avr4;
|
| 936 |
|
|
break;
|
| 937 |
|
|
}
|
| 938 |
|
|
}
|
| 939 |
|
|
return bfd_default_set_arch_mach (abfd, bfd_arch_avr,
|
| 940 |
|
|
e_set);
|
| 941 |
|
|
}
|
| 942 |
|
|
|
| 943 |
|
|
|
| 944 |
|
|
#define ELF_ARCH bfd_arch_avr
|
| 945 |
|
|
#define ELF_MACHINE_CODE EM_AVR
|
| 946 |
|
|
#define ELF_MAXPAGESIZE 1
|
| 947 |
|
|
|
| 948 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_avr_vec
|
| 949 |
|
|
#define TARGET_LITTLE_NAME "elf32-avr"
|
| 950 |
|
|
|
| 951 |
|
|
#define elf_info_to_howto avr_info_to_howto_rela
|
| 952 |
|
|
#define elf_info_to_howto_rel NULL
|
| 953 |
|
|
#define elf_backend_relocate_section elf32_avr_relocate_section
|
| 954 |
|
|
#define elf_backend_gc_mark_hook elf32_avr_gc_mark_hook
|
| 955 |
|
|
#define elf_backend_gc_sweep_hook elf32_avr_gc_sweep_hook
|
| 956 |
|
|
#define elf_backend_check_relocs elf32_avr_check_relocs
|
| 957 |
|
|
#define elf_backend_can_gc_sections 1
|
| 958 |
|
|
#define elf_backend_final_write_processing \
|
| 959 |
|
|
bfd_elf_avr_final_write_processing
|
| 960 |
|
|
#define elf_backend_object_p elf32_avr_object_p
|
| 961 |
|
|
|
| 962 |
|
|
|
| 963 |
|
|
#include "elf32-target.h"
|
