2001-10-30 16:20:14 +01:00
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/* MMIX-specific support for 64-bit ELF.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Contributed by Hans-Peter Nilsson <hp@bitrange.com>
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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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/* No specific ABI or "processor-specific supplement" defined. */
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/* TODO:
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- Linker relaxation.
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- On-demand register allocation (from R_MMIX_BASE_PLUS_OFFSET). */
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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/mmix.h"
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#include "opcode/mmix.h"
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#define MINUS_ONE (((bfd_vma) 0) - 1)
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/* Put these everywhere in new code. */
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#define FATAL_DEBUG \
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_bfd_abort (__FILE__, __LINE__, \
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"Internal: Non-debugged code (test-case missing)")
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#define BAD_CASE(x) \
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_bfd_abort (__FILE__, __LINE__, \
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"bad case for " #x)
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static boolean mmix_elf_link_output_symbol_hook
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PARAMS ((bfd *, struct bfd_link_info *, const char *,
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Elf_Internal_Sym *, asection *));
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static bfd_reloc_status_type mmix_elf_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void mmix_info_to_howto_rela
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PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *));
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static int mmix_elf_sort_relocs PARAMS ((const PTR, const PTR));
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static boolean mmix_elf_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 boolean mmix_elf_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 asection * mmix_elf_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 bfd_reloc_status_type mmix_final_link_relocate
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PARAMS ((reloc_howto_type *, asection *, bfd_byte *,
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bfd_vma, bfd_signed_vma, bfd_vma, const char *, asection *));
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static bfd_reloc_status_type mmix_elf_perform_relocation
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PARAMS ((asection *, reloc_howto_type *, PTR, bfd_vma, bfd_vma));
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static boolean mmix_elf_section_from_bfd_section
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PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *, int *));
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static boolean mmix_elf_add_symbol_hook
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PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
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const char **, flagword *, asection **, bfd_vma *));
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static boolean mmix_elf_is_local_label_name
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PARAMS ((bfd *, const char *));
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extern boolean mmix_elf_final_link PARAMS ((bfd *, struct bfd_link_info *));
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extern void mmix_elf_symbol_processing PARAMS ((bfd *, asymbol *));
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/* Watch out: this currently needs to have elements with the same index as
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their R_MMIX_ number. */
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static reloc_howto_type elf_mmix_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_MMIX_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_MMIX_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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/* An 8 bit absolute relocation. */
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HOWTO (R_MMIX_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_MMIX_8", /* name */
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false, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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false), /* pcrel_offset */
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/* An 16 bit absolute relocation. */
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HOWTO (R_MMIX_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_MMIX_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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/* An 24 bit absolute relocation. */
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HOWTO (R_MMIX_24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* 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_MMIX_24", /* name */
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false, /* partial_inplace */
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0xffffff, /* src_mask */
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0xffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32 bit absolute relocation. */
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HOWTO (R_MMIX_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_MMIX_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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/* 64 bit relocation. */
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HOWTO (R_MMIX_64, /* type */
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0, /* rightshift */
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4, /* size (0 = byte, 1 = short, 2 = long) */
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64, /* 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_MMIX_64", /* name */
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false, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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false), /* pcrel_offset */
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/* An 8 bit PC-relative relocation. */
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HOWTO (R_MMIX_PC_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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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_MMIX_PC_8", /* name */
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false, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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true), /* pcrel_offset */
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/* An 16 bit PC-relative relocation. */
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HOWTO (R_MMIX_PC_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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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_MMIX_PC_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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true), /* pcrel_offset */
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/* An 24 bit PC-relative relocation. */
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HOWTO (R_MMIX_PC_24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* 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_MMIX_PC_24", /* name */
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false, /* partial_inplace */
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0xffffff, /* src_mask */
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0xffffff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 32 bit absolute PC-relative relocation. */
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HOWTO (R_MMIX_PC_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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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_MMIX_PC_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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true), /* pcrel_offset */
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/* 64 bit PC-relative relocation. */
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HOWTO (R_MMIX_PC_64, /* type */
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0, /* rightshift */
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4, /* size (0 = byte, 1 = short, 2 = long) */
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64, /* 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_MMIX_PC_64", /* name */
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false, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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true), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_MMIX_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MMIX_GNU_VTINHERIT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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true), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_MMIX_GNU_VTENTRY, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_MMIX_GNU_VTENTRY", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* The GETA relocation is supposed to get any address that could
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possibly be reached by the GETA instruction. It can silently expand
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to get a 64-bit operand, but will complain if any of the two least
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significant bits are set. The howto members reflect a simple GETA. */
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HOWTO (R_MMIX_GETA, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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19, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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mmix_elf_reloc, /* special_function */
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"R_MMIX_GETA", /* name */
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false, /* partial_inplace */
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0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_GETA_1, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_GETA_1", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_GETA_2, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_GETA_2", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_GETA_3, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_GETA_3", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* The conditional branches are supposed to reach any (code) address.
|
|
|
|
|
It can silently expand to a 64-bit operand, but will emit an error if
|
|
|
|
|
any of the two least significant bits are set. The howto members
|
|
|
|
|
reflect a simple branch. */
|
|
|
|
|
HOWTO (R_MMIX_CBRANCH, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_CBRANCH", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_CBRANCH_J, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_CBRANCH_J", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_CBRANCH_1, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_CBRANCH_1", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_CBRANCH_2, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_CBRANCH_2", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_CBRANCH_3, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_CBRANCH_3", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* The PUSHJ instruction can reach any (code) address, as long as it's
|
|
|
|
|
the beginning of a function (no usable restriction). It can silently
|
|
|
|
|
expand to a 64-bit operand, but will emit an error if any of the two
|
|
|
|
|
least significant bits are set. The howto members reflect a simple
|
|
|
|
|
PUSHJ. */
|
|
|
|
|
HOWTO (R_MMIX_PUSHJ, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_PUSHJ", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_PUSHJ_1, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_PUSHJ_1", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_PUSHJ_2, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_PUSHJ_2", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_PUSHJ_3, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_PUSHJ_3", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* A JMP is supposed to reach any (code) address. By itself, it can
|
|
|
|
|
reach +-64M; the expansion can reach all 64 bits. Note that the 64M
|
|
|
|
|
limit is soon reached if you link the program in wildly different
|
|
|
|
|
memory segments. The howto members reflect a trivial JMP. */
|
|
|
|
|
HOWTO (R_MMIX_JMP, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
27, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_JMP", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x1ffffff, /* src_mask */
|
|
|
|
|
0x1ffffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_JMP_1, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
27, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_JMP_1", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x1ffffff, /* src_mask */
|
|
|
|
|
0x1ffffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_JMP_2, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
27, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_JMP_2", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x1ffffff, /* src_mask */
|
|
|
|
|
0x1ffffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
HOWTO (R_MMIX_JMP_3, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
27, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_JMP_3", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x1ffffff, /* src_mask */
|
|
|
|
|
0x1ffffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* When we don't emit link-time-relaxable code from the assembler, or
|
|
|
|
|
when relaxation has done all it can do, these relocs are used. For
|
|
|
|
|
GETA/PUSHJ/branches. */
|
|
|
|
|
HOWTO (R_MMIX_ADDR19, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
19, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_ADDR19", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x0100ffff, /* src_mask */
|
|
|
|
|
0x0100ffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* For JMP. */
|
|
|
|
|
HOWTO (R_MMIX_ADDR27, /* type */
|
|
|
|
|
2, /* rightshift */
|
|
|
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
27, /* bitsize */
|
|
|
|
|
true, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_ADDR27", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0x1ffffff, /* src_mask */
|
|
|
|
|
0x1ffffff, /* dst_mask */
|
|
|
|
|
true), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* A general register or the value 0..255. If a value, then the
|
|
|
|
|
instruction (offset -3) needs adjusting. */
|
|
|
|
|
HOWTO (R_MMIX_REG_OR_BYTE, /* type */
|
|
|
|
|
0, /* rightshift */
|
|
|
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
8, /* bitsize */
|
|
|
|
|
false, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_REG_OR_BYTE", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0xff, /* src_mask */
|
|
|
|
|
0xff, /* dst_mask */
|
|
|
|
|
false), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* A general register. */
|
|
|
|
|
HOWTO (R_MMIX_REG, /* type */
|
|
|
|
|
0, /* rightshift */
|
|
|
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
8, /* bitsize */
|
|
|
|
|
false, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_REG", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0xff, /* src_mask */
|
|
|
|
|
0xff, /* dst_mask */
|
|
|
|
|
false), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* A register plus an index, corresponding to the relocation expression.
|
|
|
|
|
The sizes must correspond to the valid range of the expression, while
|
|
|
|
|
the bitmasks correspond to what we store in the image. */
|
|
|
|
|
HOWTO (R_MMIX_BASE_PLUS_OFFSET, /* type */
|
|
|
|
|
0, /* rightshift */
|
|
|
|
|
4, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
64, /* bitsize */
|
|
|
|
|
false, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_BASE_PLUS_OFFSET", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0xffff, /* src_mask */
|
|
|
|
|
0xffff, /* dst_mask */
|
|
|
|
|
false), /* pcrel_offset */
|
|
|
|
|
|
|
|
|
|
/* A "magic" relocation for a LOCAL expression, asserting that the
|
|
|
|
|
expression is less than the number of global registers. No actual
|
|
|
|
|
modification of the contents is done. Implementing this as a
|
|
|
|
|
relocation was less intrusive than e.g. putting such expressions in a
|
|
|
|
|
section to discard *after* relocation. */
|
|
|
|
|
HOWTO (R_MMIX_LOCAL, /* type */
|
|
|
|
|
0, /* rightshift */
|
|
|
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
|
|
|
0, /* bitsize */
|
|
|
|
|
false, /* pc_relative */
|
|
|
|
|
0, /* bitpos */
|
|
|
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
|
|
|
mmix_elf_reloc, /* special_function */
|
|
|
|
|
"R_MMIX_LOCAL", /* name */
|
|
|
|
|
false, /* partial_inplace */
|
|
|
|
|
0, /* src_mask */
|
|
|
|
|
0, /* dst_mask */
|
|
|
|
|
false), /* pcrel_offset */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Map BFD reloc types to MMIX ELF reloc types. */
|
|
|
|
|
|
|
|
|
|
struct mmix_reloc_map
|
|
|
|
|
{
|
|
|
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
|
|
|
|
enum elf_mmix_reloc_type elf_reloc_val;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static const struct mmix_reloc_map mmix_reloc_map[] =
|
|
|
|
|
{
|
|
|
|
|
{BFD_RELOC_NONE, R_MMIX_NONE},
|
|
|
|
|
{BFD_RELOC_8, R_MMIX_8},
|
|
|
|
|
{BFD_RELOC_16, R_MMIX_16},
|
|
|
|
|
{BFD_RELOC_24, R_MMIX_24},
|
|
|
|
|
{BFD_RELOC_32, R_MMIX_32},
|
|
|
|
|
{BFD_RELOC_64, R_MMIX_64},
|
|
|
|
|
{BFD_RELOC_8_PCREL, R_MMIX_PC_8},
|
|
|
|
|
{BFD_RELOC_16_PCREL, R_MMIX_PC_16},
|
|
|
|
|
{BFD_RELOC_24_PCREL, R_MMIX_PC_24},
|
|
|
|
|
{BFD_RELOC_32_PCREL, R_MMIX_PC_32},
|
|
|
|
|
{BFD_RELOC_64_PCREL, R_MMIX_PC_64},
|
|
|
|
|
{BFD_RELOC_VTABLE_INHERIT, R_MMIX_GNU_VTINHERIT},
|
|
|
|
|
{BFD_RELOC_VTABLE_ENTRY, R_MMIX_GNU_VTENTRY},
|
|
|
|
|
{BFD_RELOC_MMIX_GETA, R_MMIX_GETA},
|
|
|
|
|
{BFD_RELOC_MMIX_CBRANCH, R_MMIX_CBRANCH},
|
|
|
|
|
{BFD_RELOC_MMIX_PUSHJ, R_MMIX_PUSHJ},
|
|
|
|
|
{BFD_RELOC_MMIX_JMP, R_MMIX_JMP},
|
|
|
|
|
{BFD_RELOC_MMIX_ADDR19, R_MMIX_ADDR19},
|
|
|
|
|
{BFD_RELOC_MMIX_ADDR27, R_MMIX_ADDR27},
|
|
|
|
|
{BFD_RELOC_MMIX_REG_OR_BYTE, R_MMIX_REG_OR_BYTE},
|
|
|
|
|
{BFD_RELOC_MMIX_REG, R_MMIX_REG},
|
|
|
|
|
{BFD_RELOC_MMIX_BASE_PLUS_OFFSET, R_MMIX_BASE_PLUS_OFFSET},
|
|
|
|
|
{BFD_RELOC_MMIX_LOCAL, R_MMIX_LOCAL}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static reloc_howto_type *
|
|
|
|
|
bfd_elf64_bfd_reloc_type_lookup (abfd, code)
|
|
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
|
bfd_reloc_code_real_type code;
|
|
|
|
|
{
|
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
|
|
for (i = 0;
|
|
|
|
|
i < sizeof (mmix_reloc_map) / sizeof (mmix_reloc_map[0]);
|
|
|
|
|
i++)
|
|
|
|
|
{
|
|
|
|
|
if (mmix_reloc_map[i].bfd_reloc_val == code)
|
|
|
|
|
return &elf_mmix_howto_table[mmix_reloc_map[i].elf_reloc_val];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* This function performs the actual bitfiddling and sanity check for a
|
|
|
|
|
final relocation. Each relocation gets its *worst*-case expansion
|
|
|
|
|
in size when it arrives here; any reduction in size should have been
|
|
|
|
|
caught in linker relaxation earlier. When we get here, the relocation
|
|
|
|
|
looks like the smallest instruction with SWYM:s (nop:s) appended to the
|
|
|
|
|
max size. We fill in those nop:s.
|
|
|
|
|
|
|
|
|
|
R_MMIX_GETA: (FIXME: Relaxation should break this up in 1, 2, 3 tetra)
|
|
|
|
|
GETA $N,foo
|
|
|
|
|
->
|
|
|
|
|
SETL $N,foo & 0xffff
|
|
|
|
|
INCML $N,(foo >> 16) & 0xffff
|
|
|
|
|
INCMH $N,(foo >> 32) & 0xffff
|
|
|
|
|
INCH $N,(foo >> 48) & 0xffff
|
|
|
|
|
|
|
|
|
|
R_MMIX_CBRANCH: (FIXME: Relaxation should break this up, but
|
|
|
|
|
condbranches needing relaxation might be rare enough to not be
|
|
|
|
|
worthwhile.)
|
|
|
|
|
[P]Bcc $N,foo
|
|
|
|
|
->
|
|
|
|
|
[~P]B~cc $N,.+20
|
|
|
|
|
SETL $255,foo & ...
|
|
|
|
|
INCML ...
|
|
|
|
|
INCMH ...
|
|
|
|
|
INCH ...
|
|
|
|
|
GO $255,$255,0
|
|
|
|
|
|
|
|
|
|
R_MMIX_PUSHJ: (FIXME: Relaxation...)
|
|
|
|
|
PUSHJ $N,foo
|
|
|
|
|
->
|
|
|
|
|
SETL $255,foo & ...
|
|
|
|
|
INCML ...
|
|
|
|
|
INCMH ...
|
|
|
|
|
INCH ...
|
|
|
|
|
PUSHGO $N,$255,0
|
|
|
|
|
|
|
|
|
|
R_MMIX_JMP: (FIXME: Relaxation...)
|
|
|
|
|
JMP foo
|
|
|
|
|
->
|
|
|
|
|
SETL $255,foo & ...
|
|
|
|
|
INCML ...
|
|
|
|
|
INCMH ...
|
|
|
|
|
INCH ...
|
|
|
|
|
GO $255,$255,0
|
|
|
|
|
|
|
|
|
|
R_MMIX_ADDR19 and R_MMIX_ADDR27 are just filled in. */
|
|
|
|
|
|
|
|
|
|
static bfd_reloc_status_type
|
|
|
|
|
mmix_elf_perform_relocation (isec, howto, datap, addr, value)
|
|
|
|
|
asection *isec;
|
|
|
|
|
reloc_howto_type *howto;
|
|
|
|
|
PTR datap;
|
|
|
|
|
bfd_vma addr ATTRIBUTE_UNUSED;
|
|
|
|
|
bfd_vma value;
|
|
|
|
|
{
|
|
|
|
|
bfd *abfd = isec->owner;
|
|
|
|
|
bfd_reloc_status_type flag = bfd_reloc_ok;
|
|
|
|
|
bfd_reloc_status_type r;
|
|
|
|
|
int offs = 0;
|
|
|
|
|
int reg = 255;
|
|
|
|
|
|
|
|
|
|
/* The worst case bits are all similar SETL/INCML/INCMH/INCH sequences.
|
|
|
|
|
We handle the differences here and the common sequence later. */
|
|
|
|
|
switch (howto->type)
|
|
|
|
|
{
|
|
|
|
|
case R_MMIX_GETA:
|
|
|
|
|
offs = 0;
|
|
|
|
|
reg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
|
|
|
|
|
|
|
|
|
|
/* We change to an absolute value. */
|
|
|
|
|
value += addr;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_CBRANCH:
|
|
|
|
|
{
|
|
|
|
|
int in1 = bfd_get_16 (abfd, (bfd_byte *) datap) << 16;
|
|
|
|
|
|
|
|
|
|
/* Invert the condition and prediction bit, and set the offset
|
|
|
|
|
to five instructions ahead.
|
|
|
|
|
|
|
|
|
|
We *can* do better if we want to. If the branch is found to be
|
|
|
|
|
within limits, we could leave the branch as is; there'll just
|
|
|
|
|
be a bunch of NOP:s after it. But we shouldn't see this
|
|
|
|
|
sequence often enough that it's worth doing it. */
|
|
|
|
|
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(((in1 ^ ((PRED_INV_BIT | COND_INV_BIT) << 24)) & ~0xffff)
|
|
|
|
|
| (24/4)),
|
|
|
|
|
(bfd_byte *) datap);
|
|
|
|
|
|
|
|
|
|
/* Put a "GO $255,$255,0" after the common sequence. */
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24) | 0xffff00,
|
|
|
|
|
(bfd_byte *) datap + 20);
|
|
|
|
|
|
|
|
|
|
/* Common sequence starts at offset 4. */
|
|
|
|
|
offs = 4;
|
|
|
|
|
|
|
|
|
|
/* We change to an absolute value. */
|
|
|
|
|
value += addr;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_PUSHJ:
|
|
|
|
|
{
|
|
|
|
|
int inreg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
|
|
|
|
|
|
|
|
|
|
/* Put a "PUSHGO $N,$255,0" after the common sequence. */
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
((PUSHGO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
|
|
|
|
|
| (inreg << 16)
|
|
|
|
|
| 0xff00,
|
|
|
|
|
(bfd_byte *) datap + 16);
|
|
|
|
|
|
|
|
|
|
/* We change to an absolute value. */
|
|
|
|
|
value += addr;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_JMP:
|
|
|
|
|
/* This one is a little special. If we get here on a non-relaxing
|
|
|
|
|
link, and the destination is actually in range, we don't need to
|
|
|
|
|
execute the nops.
|
|
|
|
|
If so, we fall through to the bit-fiddling relocs.
|
|
|
|
|
|
|
|
|
|
FIXME: bfd_check_overflow seems broken; the relocation is
|
|
|
|
|
rightshifted before testing, so supply a zero rightshift. */
|
|
|
|
|
|
|
|
|
|
if (! ((value & 3) == 0
|
|
|
|
|
&& (r = bfd_check_overflow (complain_overflow_signed,
|
|
|
|
|
howto->bitsize,
|
|
|
|
|
0,
|
|
|
|
|
bfd_arch_bits_per_address (abfd),
|
|
|
|
|
value)) == bfd_reloc_ok))
|
|
|
|
|
{
|
|
|
|
|
/* If the relocation doesn't fit in a JMP, we let the NOP:s be
|
|
|
|
|
modified below, and put a "GO $255,$255,0" after the
|
|
|
|
|
address-loading sequence. */
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
|
|
|
|
|
| 0xffff00,
|
|
|
|
|
(bfd_byte *) datap + 16);
|
|
|
|
|
|
|
|
|
|
/* We change to an absolute value. */
|
|
|
|
|
value += addr;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
/* FALLTHROUGH. */
|
|
|
|
|
case R_MMIX_ADDR19:
|
|
|
|
|
case R_MMIX_ADDR27:
|
|
|
|
|
/* These must be in range, or else we emit an error. */
|
|
|
|
|
if ((value & 3) == 0
|
|
|
|
|
/* Note rightshift 0; see above. */
|
|
|
|
|
&& (r = bfd_check_overflow (complain_overflow_signed,
|
|
|
|
|
howto->bitsize,
|
|
|
|
|
0,
|
|
|
|
|
bfd_arch_bits_per_address (abfd),
|
|
|
|
|
value)) == bfd_reloc_ok)
|
|
|
|
|
{
|
|
|
|
|
bfd_vma in1
|
|
|
|
|
= bfd_get_32 (abfd, (bfd_byte *) datap);
|
|
|
|
|
bfd_vma highbit;
|
|
|
|
|
|
|
|
|
|
if ((bfd_signed_vma) value < 0)
|
|
|
|
|
{
|
|
|
|
|
highbit = (1 << 24);
|
|
|
|
|
value += (1 << (howto->bitsize - 1));
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
highbit = 0;
|
|
|
|
|
|
|
|
|
|
value >>= 2;
|
|
|
|
|
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(in1 & ~howto->src_mask)
|
|
|
|
|
| highbit
|
|
|
|
|
| (value & howto->dst_mask),
|
|
|
|
|
(bfd_byte *) datap);
|
|
|
|
|
|
|
|
|
|
return bfd_reloc_ok;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_REG_OR_BYTE:
|
|
|
|
|
case R_MMIX_REG:
|
|
|
|
|
if (value > 255)
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
bfd_put_8 (abfd, value, datap);
|
|
|
|
|
return bfd_reloc_ok;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
BAD_CASE (howto->type);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This code adds the common SETL/INCML/INCMH/INCH worst-case
|
|
|
|
|
sequence. */
|
|
|
|
|
|
|
|
|
|
/* Lowest two bits must be 0. We return bfd_reloc_overflow for
|
|
|
|
|
everything that looks strange. */
|
|
|
|
|
if (value & 3)
|
|
|
|
|
flag = bfd_reloc_overflow;
|
|
|
|
|
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(SETL_INSN_BYTE << 24) | (value & 0xffff) | (reg << 16),
|
|
|
|
|
(bfd_byte *) datap + offs);
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(INCML_INSN_BYTE << 24) | ((value >> 16) & 0xffff) | (reg << 16),
|
|
|
|
|
(bfd_byte *) datap + offs + 4);
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(INCMH_INSN_BYTE << 24) | ((value >> 32) & 0xffff) | (reg << 16),
|
|
|
|
|
(bfd_byte *) datap + offs + 8);
|
|
|
|
|
bfd_put_32 (abfd,
|
|
|
|
|
(INCH_INSN_BYTE << 24) | ((value >> 48) & 0xffff) | (reg << 16),
|
|
|
|
|
(bfd_byte *) datap + offs + 12);
|
|
|
|
|
|
|
|
|
|
return flag;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Set the howto pointer for an MMIX ELF reloc (type RELA). */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
mmix_info_to_howto_rela (abfd, cache_ptr, dst)
|
|
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
|
arelent *cache_ptr;
|
|
|
|
|
Elf64_Internal_Rela *dst;
|
|
|
|
|
{
|
|
|
|
|
unsigned int r_type;
|
|
|
|
|
|
|
|
|
|
r_type = ELF64_R_TYPE (dst->r_info);
|
|
|
|
|
BFD_ASSERT (r_type < (unsigned int) R_MMIX_max);
|
|
|
|
|
cache_ptr->howto = &elf_mmix_howto_table[r_type];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Any MMIX-specific relocation gets here at assembly time or when linking
|
|
|
|
|
to other formats (such as mmo); this is the relocation function from
|
|
|
|
|
the reloc_table. We don't get here for final pure ELF linking. */
|
|
|
|
|
|
|
|
|
|
static bfd_reloc_status_type
|
|
|
|
|
mmix_elf_reloc (abfd, reloc_entry, symbol, data, input_section,
|
|
|
|
|
output_bfd, error_message)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
arelent *reloc_entry;
|
|
|
|
|
asymbol *symbol;
|
|
|
|
|
PTR data;
|
|
|
|
|
asection *input_section;
|
|
|
|
|
bfd *output_bfd;
|
|
|
|
|
char **error_message ATTRIBUTE_UNUSED;
|
|
|
|
|
{
|
|
|
|
|
bfd_vma relocation;
|
|
|
|
|
bfd_reloc_status_type r;
|
|
|
|
|
asection *reloc_target_output_section;
|
|
|
|
|
bfd_reloc_status_type flag = bfd_reloc_ok;
|
|
|
|
|
bfd_vma output_base = 0;
|
|
|
|
|
bfd_vma addr;
|
|
|
|
|
|
|
|
|
|
r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
|
|
|
|
input_section, output_bfd, error_message);
|
|
|
|
|
|
|
|
|
|
/* If that was all that was needed (i.e. this isn't a final link, only
|
|
|
|
|
some segment adjustments), we're done. */
|
|
|
|
|
if (r != bfd_reloc_continue)
|
|
|
|
|
return r;
|
|
|
|
|
|
|
|
|
|
if (bfd_is_und_section (symbol->section)
|
|
|
|
|
&& (symbol->flags & BSF_WEAK) == 0
|
|
|
|
|
&& output_bfd == (bfd *) NULL)
|
|
|
|
|
return bfd_reloc_undefined;
|
|
|
|
|
|
|
|
|
|
/* Is the address of the relocation really within the section? */
|
|
|
|
|
if (reloc_entry->address > input_section->_cooked_size)
|
|
|
|
|
return bfd_reloc_outofrange;
|
|
|
|
|
|
|
|
|
|
/* Work out which section the relocation is targetted at and the
|
|
|
|
|
initial relocation command value. */
|
|
|
|
|
|
|
|
|
|
/* Get symbol value. (Common symbols are special.) */
|
|
|
|
|
if (bfd_is_com_section (symbol->section))
|
|
|
|
|
relocation = 0;
|
|
|
|
|
else
|
|
|
|
|
relocation = symbol->value;
|
|
|
|
|
|
|
|
|
|
reloc_target_output_section = bfd_get_output_section (symbol);
|
|
|
|
|
|
|
|
|
|
/* Here the variable relocation holds the final address of the symbol we
|
|
|
|
|
are relocating against, plus any addend. */
|
|
|
|
|
if (output_bfd)
|
|
|
|
|
output_base = 0;
|
|
|
|
|
else
|
|
|
|
|
output_base = reloc_target_output_section->vma;
|
|
|
|
|
|
|
|
|
|
relocation += output_base + symbol->section->output_offset;
|
|
|
|
|
|
|
|
|
|
/* Get position of relocation. */
|
|
|
|
|
addr = (reloc_entry->address + input_section->output_section->vma
|
|
|
|
|
+ input_section->output_offset);
|
|
|
|
|
if (output_bfd != (bfd *) NULL)
|
|
|
|
|
{
|
|
|
|
|
/* Add in supplied addend. */
|
|
|
|
|
relocation += reloc_entry->addend;
|
|
|
|
|
|
|
|
|
|
/* This is a partial relocation, and we want to apply the
|
|
|
|
|
relocation to the reloc entry rather than the raw data.
|
|
|
|
|
Modify the reloc inplace to reflect what we now know. */
|
|
|
|
|
reloc_entry->addend = relocation;
|
|
|
|
|
reloc_entry->address += input_section->output_offset;
|
|
|
|
|
return flag;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return mmix_final_link_relocate (reloc_entry->howto, input_section,
|
|
|
|
|
data, reloc_entry->address,
|
|
|
|
|
reloc_entry->addend, relocation,
|
|
|
|
|
bfd_asymbol_name (symbol),
|
|
|
|
|
reloc_target_output_section);
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
/* Relocate an MMIX ELF section. Modified from elf32-fr30.c; look to it
|
|
|
|
|
for guidance if you're thinking of copying this. */
|
|
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
|
mmix_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
|
|
|
|
contents, relocs, local_syms, local_sections)
|
|
|
|
|
bfd *output_bfd ATTRIBUTE_UNUSED;
|
|
|
|
|
struct bfd_link_info *info;
|
|
|
|
|
bfd *input_bfd;
|
|
|
|
|
asection *input_section;
|
|
|
|
|
bfd_byte *contents;
|
|
|
|
|
Elf_Internal_Rela *relocs;
|
|
|
|
|
Elf_Internal_Sym *local_syms;
|
|
|
|
|
asection **local_sections;
|
|
|
|
|
{
|
|
|
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
|
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
|
|
|
Elf_Internal_Rela *rel;
|
|
|
|
|
Elf_Internal_Rela *relend;
|
|
|
|
|
|
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
|
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
|
|
|
|
relend = relocs + input_section->reloc_count;
|
|
|
|
|
|
|
|
|
|
for (rel = relocs; rel < relend; rel ++)
|
|
|
|
|
{
|
|
|
|
|
reloc_howto_type *howto;
|
|
|
|
|
unsigned long r_symndx;
|
|
|
|
|
Elf_Internal_Sym *sym;
|
|
|
|
|
asection *sec;
|
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
|
bfd_vma relocation;
|
|
|
|
|
bfd_reloc_status_type r;
|
|
|
|
|
const char *name = NULL;
|
|
|
|
|
int r_type;
|
|
|
|
|
boolean undefined_signalled = false;
|
|
|
|
|
|
|
|
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
|
|
|
|
|
|
|
|
|
if (r_type == R_MMIX_GNU_VTINHERIT
|
|
|
|
|
|| r_type == R_MMIX_GNU_VTENTRY)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
|
|
|
|
|
|
|
|
|
if (info->relocateable)
|
|
|
|
|
{
|
|
|
|
|
/* This is a relocateable link. We don't have to change
|
|
|
|
|
anything, unless the reloc is against a section symbol,
|
|
|
|
|
in which case we have to adjust according to where the
|
|
|
|
|
section symbol winds up in the output section. */
|
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
|
|
|
{
|
|
|
|
|
sym = local_syms + r_symndx;
|
|
|
|
|
|
|
|
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
|
|
|
|
{
|
|
|
|
|
sec = local_sections [r_symndx];
|
|
|
|
|
rel->r_addend += sec->output_offset + sym->st_value;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This is a final link. */
|
|
|
|
|
howto = elf_mmix_howto_table + ELF64_R_TYPE (rel->r_info);
|
|
|
|
|
h = NULL;
|
|
|
|
|
sym = NULL;
|
|
|
|
|
sec = NULL;
|
|
|
|
|
|
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
|
|
|
{
|
|
|
|
|
sym = local_syms + r_symndx;
|
|
|
|
|
sec = local_sections [r_symndx];
|
2001-11-23 13:17:21 +01:00
|
|
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
|
2001-10-30 16:20:14 +01:00
|
|
|
|
|
|
|
|
|
name = bfd_elf_string_from_elf_section
|
|
|
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
|
|
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
|
|
|
|
|
|
|
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
|
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
|
|
|
|
|
|
name = h->root.root.string;
|
|
|
|
|
|
|
|
|
|
if (h->root.type == bfd_link_hash_defined
|
|
|
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
|
|
|
{
|
|
|
|
|
sec = h->root.u.def.section;
|
|
|
|
|
relocation = (h->root.u.def.value
|
|
|
|
|
+ sec->output_section->vma
|
|
|
|
|
+ sec->output_offset);
|
|
|
|
|
}
|
|
|
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
|
|
|
|
relocation = 0;
|
|
|
|
|
else if (info->shared
|
|
|
|
|
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
|
|
|
|
relocation = 0;
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* The test on undefined_signalled is redundant at the
|
|
|
|
|
moment, but kept for symmetry. */
|
|
|
|
|
if (! undefined_signalled
|
|
|
|
|
&& ! ((*info->callbacks->undefined_symbol)
|
|
|
|
|
(info, h->root.root.string, input_bfd,
|
|
|
|
|
input_section, rel->r_offset, true)))
|
|
|
|
|
return false;
|
|
|
|
|
undefined_signalled = true;
|
|
|
|
|
relocation = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
r = mmix_final_link_relocate (howto, input_section,
|
|
|
|
|
contents, rel->r_offset,
|
|
|
|
|
rel->r_addend, relocation, name, sec);
|
|
|
|
|
|
|
|
|
|
if (r != bfd_reloc_ok)
|
|
|
|
|
{
|
|
|
|
|
boolean check_ok = true;
|
|
|
|
|
const char * msg = (const char *) NULL;
|
|
|
|
|
|
|
|
|
|
switch (r)
|
|
|
|
|
{
|
|
|
|
|
case bfd_reloc_overflow:
|
|
|
|
|
check_ok = info->callbacks->reloc_overflow
|
|
|
|
|
(info, name, howto->name, (bfd_vma) 0,
|
|
|
|
|
input_bfd, input_section, rel->r_offset);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_undefined:
|
|
|
|
|
/* We may have sent this message above. */
|
|
|
|
|
if (! undefined_signalled)
|
|
|
|
|
check_ok = info->callbacks->undefined_symbol
|
|
|
|
|
(info, name, input_bfd, input_section, rel->r_offset,
|
|
|
|
|
true);
|
|
|
|
|
undefined_signalled = true;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_outofrange:
|
|
|
|
|
msg = _("internal error: out of range error");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_notsupported:
|
|
|
|
|
msg = _("internal error: unsupported relocation error");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_dangerous:
|
|
|
|
|
msg = _("internal error: dangerous relocation");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
msg = _("internal error: unknown error");
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (msg)
|
|
|
|
|
check_ok = info->callbacks->warning
|
|
|
|
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
|
|
|
|
|
|
|
|
|
if (! check_ok)
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
/* Perform a single relocation. By default we use the standard BFD
|
|
|
|
|
routines. A few relocs we have to do ourselves. */
|
|
|
|
|
|
|
|
|
|
static bfd_reloc_status_type
|
|
|
|
|
mmix_final_link_relocate (howto, input_section, contents,
|
|
|
|
|
r_offset, r_addend, relocation, symname, symsec)
|
|
|
|
|
reloc_howto_type *howto;
|
|
|
|
|
asection *input_section;
|
|
|
|
|
bfd_byte *contents;
|
|
|
|
|
bfd_vma r_offset;
|
|
|
|
|
bfd_signed_vma r_addend;
|
|
|
|
|
bfd_vma relocation;
|
|
|
|
|
const char *symname;
|
|
|
|
|
asection *symsec;
|
|
|
|
|
{
|
|
|
|
|
bfd_reloc_status_type r = bfd_reloc_ok;
|
|
|
|
|
bfd_vma addr
|
|
|
|
|
= (input_section->output_section->vma
|
|
|
|
|
+ input_section->output_offset
|
|
|
|
|
+ r_offset);
|
|
|
|
|
bfd_signed_vma srel
|
|
|
|
|
= (bfd_signed_vma) relocation + r_addend;
|
|
|
|
|
|
|
|
|
|
switch (howto->type)
|
|
|
|
|
{
|
|
|
|
|
/* All these are PC-relative. */
|
|
|
|
|
case R_MMIX_PUSHJ:
|
|
|
|
|
case R_MMIX_CBRANCH:
|
|
|
|
|
case R_MMIX_ADDR19:
|
|
|
|
|
case R_MMIX_GETA:
|
|
|
|
|
case R_MMIX_ADDR27:
|
|
|
|
|
case R_MMIX_JMP:
|
|
|
|
|
contents += r_offset;
|
|
|
|
|
|
|
|
|
|
srel -= (input_section->output_section->vma
|
|
|
|
|
+ input_section->output_offset
|
|
|
|
|
+ r_offset);
|
|
|
|
|
|
|
|
|
|
r = mmix_elf_perform_relocation (input_section, howto, contents,
|
|
|
|
|
addr, srel);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_REG_OR_BYTE:
|
|
|
|
|
case R_MMIX_REG:
|
|
|
|
|
/* For now, we handle these alike. They must refer to an register
|
|
|
|
|
symbol, which is either relative to the register section and in
|
|
|
|
|
the range 0..255, or is in the register contents section with vma
|
|
|
|
|
regno * 8. */
|
|
|
|
|
|
|
|
|
|
/* FIXME: A better way to check for reg contents section?
|
|
|
|
|
FIXME: Postpone section->scaling to mmix_elf_perform_relocation? */
|
|
|
|
|
if (symsec == NULL)
|
|
|
|
|
return bfd_reloc_undefined;
|
|
|
|
|
|
|
|
|
|
if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
|
|
|
|
MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
|
|
|
|
{
|
|
|
|
|
if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
|
|
|
|
|
{
|
|
|
|
|
/* The bfd_reloc_outofrange return value, though intuitively
|
|
|
|
|
a better value, will not get us an error. */
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
}
|
|
|
|
|
srel /= 8;
|
|
|
|
|
}
|
|
|
|
|
else if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
|
|
|
|
MMIX_REG_SECTION_NAME) == 0)
|
|
|
|
|
{
|
|
|
|
|
if (srel < 0 || srel > 255)
|
|
|
|
|
/* The bfd_reloc_outofrange return value, though intuitively a
|
|
|
|
|
better value, will not get us an error. */
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
(*_bfd_error_handler)
|
|
|
|
|
(_("%s: register relocation against non-register symbol: %s in %s"),
|
|
|
|
|
bfd_get_filename (input_section->owner),
|
|
|
|
|
symname == NULL || *symname == 0 ? _("(unknown)") : symname,
|
|
|
|
|
bfd_get_section_name (symsec->owner, symsec));
|
|
|
|
|
|
|
|
|
|
/* The bfd_reloc_outofrange return value, though intuitively a
|
|
|
|
|
better value, will not get us an error. */
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
}
|
|
|
|
|
contents += r_offset;
|
|
|
|
|
r = mmix_elf_perform_relocation (input_section, howto, contents,
|
|
|
|
|
addr, srel);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_MMIX_LOCAL:
|
|
|
|
|
/* This isn't a real relocation, it's just an assertion that the
|
|
|
|
|
final relocation value corresponds to a local register. We
|
|
|
|
|
ignore the actual relocation; nothing is changed. */
|
|
|
|
|
{
|
|
|
|
|
asection *regsec
|
|
|
|
|
= bfd_get_section_by_name (input_section->output_section->owner,
|
|
|
|
|
MMIX_REG_CONTENTS_SECTION_NAME);
|
|
|
|
|
bfd_vma first_global;
|
|
|
|
|
|
|
|
|
|
/* Check that this is an absolute value, or a reference to the
|
|
|
|
|
register contents section or the register (symbol) section.
|
|
|
|
|
Absolute numbers can get here as undefined section. Undefined
|
|
|
|
|
symbols are signalled elsewhere, so there's no conflict in us
|
|
|
|
|
accidentally handling it. */
|
|
|
|
|
if (!bfd_is_abs_section (symsec)
|
|
|
|
|
&& !bfd_is_und_section (symsec)
|
|
|
|
|
&& strcmp (bfd_get_section_name (symsec->owner, symsec),
|
|
|
|
|
MMIX_REG_CONTENTS_SECTION_NAME) != 0
|
|
|
|
|
&& strcmp (bfd_get_section_name (symsec->owner, symsec),
|
|
|
|
|
MMIX_REG_SECTION_NAME) != 0)
|
|
|
|
|
{
|
|
|
|
|
(*_bfd_error_handler)
|
|
|
|
|
(_("%s: directive LOCAL valid only with a register or absolute value"),
|
|
|
|
|
bfd_get_filename (input_section->owner));
|
|
|
|
|
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If we don't have a register contents section, then $255 is the
|
|
|
|
|
first global register. */
|
|
|
|
|
if (regsec == NULL)
|
|
|
|
|
first_global = 255;
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
first_global = bfd_get_section_vma (abfd, regsec) / 8;
|
|
|
|
|
if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
|
|
|
|
MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
|
|
|
|
{
|
|
|
|
|
if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
|
|
|
|
|
/* The bfd_reloc_outofrange return value, though
|
|
|
|
|
intuitively a better value, will not get us an error. */
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
srel /= 8;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((bfd_vma) srel >= first_global)
|
|
|
|
|
{
|
|
|
|
|
/* FIXME: Better error message. */
|
|
|
|
|
(*_bfd_error_handler)
|
|
|
|
|
(_("%s: LOCAL directive: Register $%ld is not a local register. First global register is $%ld."),
|
|
|
|
|
bfd_get_filename (input_section->owner), (long) srel, (long) first_global);
|
|
|
|
|
|
|
|
|
|
return bfd_reloc_overflow;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
r = bfd_reloc_ok;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
r = _bfd_final_link_relocate (howto, input_section->owner, input_section,
|
|
|
|
|
contents, r_offset,
|
|
|
|
|
relocation, r_addend);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return r;
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
/* Return the section that should be marked against GC for a given
|
|
|
|
|
relocation. */
|
|
|
|
|
|
|
|
|
|
static asection *
|
|
|
|
|
mmix_elf_gc_mark_hook (abfd, info, rel, h, sym)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
|
|
|
Elf_Internal_Rela *rel;
|
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
|
Elf_Internal_Sym *sym;
|
|
|
|
|
{
|
|
|
|
|
if (h != NULL)
|
|
|
|
|
{
|
|
|
|
|
switch (ELF64_R_TYPE (rel->r_info))
|
|
|
|
|
{
|
|
|
|
|
case R_MMIX_GNU_VTINHERIT:
|
|
|
|
|
case R_MMIX_GNU_VTENTRY:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
switch (h->root.type)
|
|
|
|
|
{
|
|
|
|
|
case bfd_link_hash_defined:
|
|
|
|
|
case bfd_link_hash_defweak:
|
|
|
|
|
return h->root.u.def.section;
|
|
|
|
|
|
|
|
|
|
case bfd_link_hash_common:
|
|
|
|
|
return h->root.u.c.p->section;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
Support for more than 64k ELF sections.
include/elf/ChangeLog
* external.h (Elf_External_Sym_Shndx): Declare.
* internal.h (struct elf_internal_sym <st_shndx>): Make it an
unsigned int.
* common.h (SHN_BAD): Define.
bfd/ChangeLog
* configure.in: Bump bfd version.
* configure: Regenerate.
* elf-bfd.h (elf_size_info <swap_symbol_out>): Add shndx param.
(bfd_elf32_swap_symbol_in): Likewise.
(bfd_elf32_swap_symbol_out): Likewise.
(bfd_elf64_swap_symbol_in): Likewise.
(bfd_elf64_swap_symbol_out): Likewise.
(elf_reloc_cookie): Add locsym_shndx field. Make locsyms a PTR.
(elf_obj_tdata): Add num_elf_sections, symtab_shndx_hdr and
symtab_shndx_section.
(elf_numsections): Define.
(elf_symtab_shndx): Define.
* elf.c (setup_group): Use elf_numsections rather than header e_shnum.
(bfd_elf_find_section): Likewise.
(bfd_section_from_elf_index): Likewise.
(bfd_section_from_shdr): Likewise. Handle SHT_SYMTAB_SHNDX.
(bfd_section_from_r_symndx): Read symbol shndx extension, and
translate st_shndx for > SHN_HIRESERVE.
(assign_section_numbers): Skip reserved sections. Assign
symtab_shndx_section and elf_numsections. Exclude reserved
sections from e_shnum. Set up symtab_shndx_hdr.
(_bfd_elf_compute_section_file_positions): Handle symtab_shndx_hdr.
(map_sections_to_segments): Don't map eh_frame_hdr unless required.
(assign_file_positions_except_relocs): Use elf_numsections rather
than header e_shnum. Skip reserved sections and symtab_shndx_section.
(prep_headers): Set name for symtab_shndx_hdr.
(_bfd_elf_assign_file_positions_for_relocs): Use elf_numsections.
(_bfd_elf_write_object_contents): Likewise. Skip reserved sections.
(_bfd_elf_section_from_bfd_section): Check bfd_{abs,com,und}_section
first. Use elf_section_data if available. Use elf_numsections.
Start scan at index 1.
(copy_private_bfd_data ): Comment fixes.
(MAP_ONESYMTAB): Define above SHN_HIOS.
(MAP_DYNSYMTAB): Likewise.
(MAP_STRTAB): Likewise.
(MAP_SHSTRTAB): Likewise.
(MAP_SYM_SHNDX): New define.
(_bfd_elf_copy_private_symbol_data): Handle symtab_shndx_section.
(swap_out_syms): Swap out SHT_SYMTAB_SHNDX section too.
* elfcode.h (elf_swap_symbol_in): Add shndx param, and handle shndx
extension.
(elf_swap_symbol_out): Likewise.
(elf_object_p): Set elf_numsections, and use instead of e_shnum.
Initialialise reserved elf_elfsections to point at shdr[0]. Remove
redundant bfd_release calls.
(elf_slurp_symbol_table): Read symbol shndx extension, and use with
elf_swap_symbol_in. Translate st_shndx for > SHN_HIRESERVE too.
* elflink.h (elf_link_is_defined_archive_symbol): Read symbol shndx
extension, and use with elf_swap_symbol_in.
(elf_link_record_local_dynamic_symbol): Likewise.
(elf_link_add_object_symbols): Likewise. Also translate st_shndx
for elf sections > SHN_HIRESERVE.
(NAME(bfd_elf,size_dynamic_sections)): Adjust elf_swap_symbol_out
call.
(struct elf_final_link_info): Add locsym_shndx and symshndxbuf.
(elf_bfd_final_link): Allocate the above, and tidy code allocating
other buffers. Use elf_numsections instead of e_shnum. Adjust
elf_swap_symbol_out calls.
(elf_link_output_sym): Swap out symbol shndx extension too.
(elf_link_flush_output_syms): And flush them to disk.
(elf_link_output_extsym): Use SHN_BAD. Adjust elf_swap_symbol_out
calls.
(elf_gc_mark): Read symbol shndx extension, and use with
elf_swap_symbol_in.
(elf_link_input_bfd): Likewise, Translate st_shndx for elf sections
> SHN_HIRESERVE too. Use SHN_BAD.
(elf_reloc_symbol_deleted_p): Use symbol shndx extensions with
elf_swap_symbol_in. Translate st_shndx > SHN_HIRESERVE too.
(elf_bfd_discard_info): Read symbol shndx extension. Don't attempt
to continue after a bfd error.
* elf-m10200.c (mn10200_elf_relax_section): Only read local syms.
Stash them immediately to symtab_hdr->contents rather than later
in multiple places. Clean up afterwards. Read symbol shndx
extension, and use with swap_symbol_in. Translate SHN_UNDEF,
SHN_ABS, SHN_COMMON and elf sections > SHN_HIRESERVE to bfd
sections too. Remove dead code.
(mn10200_elf_relax_delete_bytes): Use symbol shndx extension
when swapping in symbols. Tidy code adjusting global syms.
Don't swap in global syms.
(mn10200_elf_symbol_address_p): Likewise. Remove extsyms param.
(mn10200_elf_get_relocated_section_contents): Read symbol shndx
extension, and use with swap_symbol_in. Rename "size" -> "amt"
to maximize code in common with other files. Translate st_shndx
for > SHN_HIRESERVE too. Remove dead code.
* elf-m10300.c (mn10300_elf_relax_section): Only read local syms.
Stash them immediately to symtab_hdr->contents rather than later
in multiple places. Clean up afterwards. Read symbol shndx
extension, and use with swap_symbol_in. Remove dead code.
(mn10300_elf_relax_delete_bytes): As for elf-m10200.c.
(mn10300_elf_symbol_address_p): Likewise.
(mn10300_elf_get_relocated_section_contents): Likewise.
* elf32-h8300.c (elf32_h8_relax_section): As for elf-m10300.c.
(elf32_h8_relax_delete_bytes): Likewise.
(elf32_h8_symbol_address_p): Likewise.
(elf32_h8_get_relocated_section_contents): Likewise.
* elf32-hppa.c (elf32_hppa_size_stubs): Read symbol shndx
extension, and use with swap_symbol_in.
* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
* elf32-i370.c (i370_elf_finish_dynamic_sections): Adjust call to
bfd_elf32_swap_symbol_out.
* elf32-m32r.c (m32r_elf_get_relocated_section_contents): Translate
elf sections > SHN_HIRESERVE too.
* elf32-m68k.c (bfd_m68k_elf32_create_embedded_relocs): Only read
local syms. Read symbol shndx extension, and use with swap_symbol_in.
* elf32-mips.c (_bfd_mips_elf_final_write_processing): Use
elf_numsections rather than header e_shnum.
* elf32-sh.c (sh_elf_relax_section): As for elf-m10300.c.
(sh_elf_relax_delete_bytes): Likewise.
(sh_elf_get_relocated_section_contents): Likewise. Only read local
symbols.
* elf32-v850.c (v850_elf_symbol_processing): Use an unsigned int to
hold section index. Use elf_numsections rather than e_shnum.
Rename "index" -> "indx" to avoid shadowing warning.
(v850_elf_add_symbol_hook): Likewise.
* elf64-alpha.c (elf64_alpha_relax_section): Only read local syms.
Read symbol shndx extension, and use with swap_symbol_in.
* elf32-xstormy16.c (xstormy16_elf_relax_section): Likewise.
Translate SHN_COMMON and elf sections > SHN_HIRESERVE too.
* elfxx-ia64.c (elfNN_ia64_relax_section): Likewise.
(elfNN_ia64_aix_add_symbol_hook): Use elf_numsections.
* elf-m10300.c (mn10300_elf_gc_mark_hook): Remove unnecessary checks
before calling bfd_section_from_elf_index on local syms.
* elf32-arm.h (elf32_arm_gc_mark_hook): Likewise.
* elf32-avr.c (elf32_avr_gc_mark_hook): Likewise.
* elf32-cris.c (cris_elf_gc_mark_hook): Likewise.
* elf32-d10v.c (elf32_d10v_gc_mark_hook): Likewise.
* elf32-fr30.c (fr30_elf_gc_mark_hook): Likewise.
* elf32-hppa.c (elf32_hppa_gc_mark_hook): Likewise.
* elf32-i386.c (elf_i386_gc_mark_hook): Likewise.
* elf32-m32r.c (m32r_elf_gc_mark_hook): Likewise.
* elf32-m68k.c (elf_m68k_gc_mark_hook): Likewise.
* elf32-mcore.c (mcore_elf_gc_mark_hook): Likewise.
* elf32-mips.c (_bfd_mips_elf_gc_mark_hook): Likewise.
* elf32-openrisc.c (openrisc_elf_gc_mark_hook): Likewise.
* elf32-ppc.c (ppc_elf_gc_mark_hook): Likewise.
* elf32-s390.c (elf_s390_gc_mark_hook): Likewise.
* elf32-sh.c (sh_elf_gc_mark_hook): Likewise.
* elf32-sparc.c (elf32_sparc_gc_mark_hook): Likewise.
* elf32-v850.c (v850_elf_gc_mark_hook): Likewise.
* elf32-xstormy16.c (xstormy16_elf_gc_mark_hook): Likewise.
* elf64-mips.c (mips_elf64_gc_mark_hook): Likewise.
* elf64-mmix.c (mmix_elf_gc_mark_hook): Likewise.
* elf64-ppc.c (ppc64_elf_gc_mark_hook): Likewise.
* elf64-s390.c (elf_s390_gc_mark_hook): Likewise.
* elf64-x86-64.c (elf64_x86_64_gc_mark_hook): Likewise.
binutils/ChangeLog
* readelf.c (symtab_shndx_hdr): New global.
(SECTION_HEADER_INDEX): Define.
(SECTION_HEADER_NUM): Define.
(SECTION_HEADER): Define.
(GET_ELF_SYMBOLS): Pass two params rather than three.
(get_32bit_elf_symbols): Take file and section args. Read and
use SHT_SYMTAB_SHNDX.
(get_64bit_elf_symbols): Likewise.
(dump_relocations): Use SECTION_HEADER to index "section_headers".
(process_section_headers): Likewise. Use SECTION_HEADER_NUM too.
Remember symtab_shdx_hdr.
(process_program_headers): Scan from index 1 for segment map.
(slurp_ia64_unwind_table): Use SECTION_HEADER to index
"section_headers".
(process_relocs): Likewise. Also adjust call to GET_ELF_SYMBOLS.
(process_unwind): Likewise.
(process_version_sections): Likewise.
(process_symbol_table): Likewise.
(display_debug_info): Likewise.
(process_dynamic_segment): Fake up a symtab section for changed
GET_ELF_SYMBOLS.
(get_symbol_index_type): Check SHN_LOOS before SHN_LORESERVE.
(process_program_headers): Kill signed/unsigned warning.
(load_debug_str): Likewise.
(display_debug_info): Likewise.
2001-12-17 01:52:35 +01:00
|
|
|
|
return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
2001-10-30 16:20:14 +01:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
/* Sort register relocs to come before expanding relocs. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
mmix_elf_sort_relocs (p1, p2)
|
|
|
|
|
const PTR p1;
|
|
|
|
|
const PTR p2;
|
|
|
|
|
{
|
|
|
|
|
const Elf_Internal_Rela *r1 = (const Elf_Internal_Rela *) p1;
|
|
|
|
|
const Elf_Internal_Rela *r2 = (const Elf_Internal_Rela *) p2;
|
|
|
|
|
int r1_is_reg, r2_is_reg;
|
|
|
|
|
|
|
|
|
|
/* Sort primarily on r_offset & ~3, so relocs are done to consecutive
|
|
|
|
|
insns. */
|
|
|
|
|
if ((r1->r_offset & ~(bfd_vma) 3) > (r2->r_offset & ~(bfd_vma) 3))
|
|
|
|
|
return 1;
|
|
|
|
|
else if ((r1->r_offset & ~(bfd_vma) 3) < (r2->r_offset & ~(bfd_vma) 3))
|
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
|
|
r1_is_reg
|
|
|
|
|
= (ELF64_R_TYPE (r1->r_info) == R_MMIX_REG_OR_BYTE
|
|
|
|
|
|| ELF64_R_TYPE (r1->r_info) == R_MMIX_REG);
|
|
|
|
|
r2_is_reg
|
|
|
|
|
= (ELF64_R_TYPE (r2->r_info) == R_MMIX_REG_OR_BYTE
|
|
|
|
|
|| ELF64_R_TYPE (r2->r_info) == R_MMIX_REG);
|
|
|
|
|
if (r1_is_reg != r2_is_reg)
|
|
|
|
|
return r2_is_reg - r1_is_reg;
|
|
|
|
|
|
|
|
|
|
/* Neither or both are register relocs. Then sort on full offset. */
|
|
|
|
|
if (r1->r_offset > r2->r_offset)
|
|
|
|
|
return 1;
|
|
|
|
|
else if (r1->r_offset < r2->r_offset)
|
|
|
|
|
return -1;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Look through the relocs for a section during the first phase. */
|
|
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
|
mmix_elf_check_relocs (abfd, info, sec, relocs)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
struct bfd_link_info *info;
|
|
|
|
|
asection *sec;
|
|
|
|
|
const Elf_Internal_Rela *relocs;
|
|
|
|
|
{
|
|
|
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
|
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
|
|
|
|
const Elf_Internal_Rela *rel;
|
|
|
|
|
const Elf_Internal_Rela *rel_end;
|
|
|
|
|
|
|
|
|
|
if (info->relocateable)
|
|
|
|
|
return true;
|
|
|
|
|
|
|
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
|
|
|
|
sym_hashes = elf_sym_hashes (abfd);
|
|
|
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf64_External_Sym);
|
|
|
|
|
if (!elf_bad_symtab (abfd))
|
|
|
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
|
|
|
|
|
|
|
|
|
/* First we sort the relocs so that any register relocs come before
|
|
|
|
|
expansion-relocs to the same insn. FIXME: Not done for mmo. */
|
|
|
|
|
qsort ((PTR) relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
|
|
|
|
|
mmix_elf_sort_relocs);
|
|
|
|
|
|
|
|
|
|
rel_end = relocs + sec->reloc_count;
|
|
|
|
|
for (rel = relocs; rel < rel_end; rel++)
|
|
|
|
|
{
|
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
|
unsigned long r_symndx;
|
|
|
|
|
|
|
|
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
|
|
|
h = NULL;
|
|
|
|
|
else
|
|
|
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
|
|
|
|
|
|
|
|
|
switch (ELF64_R_TYPE (rel->r_info))
|
|
|
|
|
{
|
|
|
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
|
|
|
|
Reconstruct it for later use during GC. */
|
|
|
|
|
case R_MMIX_GNU_VTINHERIT:
|
|
|
|
|
if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
|
|
|
|
return false;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/* This relocation describes which C++ vtable entries are actually
|
|
|
|
|
used. Record for later use during GC. */
|
|
|
|
|
case R_MMIX_GNU_VTENTRY:
|
|
|
|
|
if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
|
|
|
|
return false;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
/* Change symbols relative to the reg contents section to instead be to
|
|
|
|
|
the register section, and scale them down to correspond to the register
|
|
|
|
|
number. */
|
|
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
|
mmix_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
|
|
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
|
|
|
const char *name ATTRIBUTE_UNUSED;
|
|
|
|
|
Elf_Internal_Sym *sym;
|
|
|
|
|
asection *input_sec;
|
|
|
|
|
{
|
|
|
|
|
if (input_sec != NULL
|
|
|
|
|
&& input_sec->name != NULL
|
|
|
|
|
&& ELF_ST_TYPE (sym->st_info) != STT_SECTION
|
|
|
|
|
&& strcmp (input_sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
|
|
|
|
{
|
|
|
|
|
sym->st_value /= 8;
|
|
|
|
|
sym->st_shndx = SHN_REGISTER;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We fake a register section that holds values that are register numbers.
|
|
|
|
|
Having a SHN_REGISTER and register section translates better to other
|
|
|
|
|
formats (e.g. mmo) than for example a STT_REGISTER attribute.
|
|
|
|
|
This section faking is based on a construct in elf32-mips.c. */
|
|
|
|
|
static asection mmix_elf_reg_section;
|
|
|
|
|
static asymbol mmix_elf_reg_section_symbol;
|
|
|
|
|
static asymbol *mmix_elf_reg_section_symbol_ptr;
|
|
|
|
|
|
|
|
|
|
/* Handle the special MIPS section numbers that a symbol may use.
|
|
|
|
|
This is used for both the 32-bit and the 64-bit ABI. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
mmix_elf_symbol_processing (abfd, asym)
|
|
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
|
asymbol *asym;
|
|
|
|
|
{
|
|
|
|
|
elf_symbol_type *elfsym;
|
|
|
|
|
|
|
|
|
|
elfsym = (elf_symbol_type *) asym;
|
|
|
|
|
switch (elfsym->internal_elf_sym.st_shndx)
|
|
|
|
|
{
|
|
|
|
|
case SHN_REGISTER:
|
|
|
|
|
if (mmix_elf_reg_section.name == NULL)
|
|
|
|
|
{
|
|
|
|
|
/* Initialize the register section. */
|
|
|
|
|
mmix_elf_reg_section.name = MMIX_REG_SECTION_NAME;
|
|
|
|
|
mmix_elf_reg_section.flags = SEC_NO_FLAGS;
|
|
|
|
|
mmix_elf_reg_section.output_section = &mmix_elf_reg_section;
|
|
|
|
|
mmix_elf_reg_section.symbol = &mmix_elf_reg_section_symbol;
|
|
|
|
|
mmix_elf_reg_section.symbol_ptr_ptr = &mmix_elf_reg_section_symbol_ptr;
|
|
|
|
|
mmix_elf_reg_section_symbol.name = MMIX_REG_SECTION_NAME;
|
|
|
|
|
mmix_elf_reg_section_symbol.flags = BSF_SECTION_SYM;
|
|
|
|
|
mmix_elf_reg_section_symbol.section = &mmix_elf_reg_section;
|
|
|
|
|
mmix_elf_reg_section_symbol_ptr = &mmix_elf_reg_section_symbol;
|
|
|
|
|
}
|
|
|
|
|
asym->section = &mmix_elf_reg_section;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given a BFD section, try to locate the corresponding ELF section
|
|
|
|
|
index. */
|
|
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
|
mmix_elf_section_from_bfd_section (abfd, hdr, sec, retval)
|
|
|
|
|
bfd * abfd ATTRIBUTE_UNUSED;
|
|
|
|
|
Elf64_Internal_Shdr * hdr ATTRIBUTE_UNUSED;
|
|
|
|
|
asection * sec;
|
|
|
|
|
int * retval;
|
|
|
|
|
{
|
|
|
|
|
if (strcmp (bfd_get_section_name (abfd, sec), MMIX_REG_SECTION_NAME) == 0)
|
|
|
|
|
*retval = SHN_REGISTER;
|
|
|
|
|
else
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Hook called by the linker routine which adds symbols from an object
|
|
|
|
|
file. We must handle the special SHN_REGISTER section number here.
|
|
|
|
|
|
|
|
|
|
We also check that we only have *one* each of the section-start
|
|
|
|
|
symbols, since otherwise having two with the same value would cause
|
|
|
|
|
them to be "merged", but with the contents serialized. */
|
|
|
|
|
|
|
|
|
|
boolean
|
|
|
|
|
mmix_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
|
|
|
const Elf_Internal_Sym *sym;
|
|
|
|
|
const char **namep ATTRIBUTE_UNUSED;
|
|
|
|
|
flagword *flagsp ATTRIBUTE_UNUSED;
|
|
|
|
|
asection **secp;
|
|
|
|
|
bfd_vma *valp ATTRIBUTE_UNUSED;
|
|
|
|
|
{
|
|
|
|
|
if (sym->st_shndx == SHN_REGISTER)
|
|
|
|
|
*secp = bfd_make_section_old_way (abfd, MMIX_REG_SECTION_NAME);
|
|
|
|
|
else if ((*namep)[0] == '_' && (*namep)[1] == '_' && (*namep)[2] == '.'
|
|
|
|
|
&& strncmp (*namep, MMIX_LOC_SECTION_START_SYMBOL_PREFIX,
|
|
|
|
|
strlen (MMIX_LOC_SECTION_START_SYMBOL_PREFIX)) == 0)
|
|
|
|
|
{
|
|
|
|
|
/* See if we have another one. */
|
|
|
|
|
struct elf_link_hash_entry *h
|
|
|
|
|
= (struct elf_link_hash_entry *) bfd_link_hash_lookup (info->hash,
|
|
|
|
|
*namep,
|
|
|
|
|
false,
|
|
|
|
|
false, false);
|
|
|
|
|
|
|
|
|
|
if (h != NULL && h->root.type != bfd_link_hash_undefined)
|
|
|
|
|
{
|
|
|
|
|
/* How do we get the asymbol (or really: the filename) from h?
|
|
|
|
|
h->root.u.def.section->owner is NULL. */
|
|
|
|
|
((*_bfd_error_handler)
|
|
|
|
|
(_("%s: Error: multiple definition of `%s'; start of %s is set in a earlier linked file\n"),
|
|
|
|
|
bfd_get_filename (abfd), *namep,
|
|
|
|
|
*namep + strlen (MMIX_LOC_SECTION_START_SYMBOL_PREFIX)));
|
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We consider symbols matching "L.*:[0-9]+" to be local symbols. */
|
|
|
|
|
|
|
|
|
|
boolean
|
|
|
|
|
mmix_elf_is_local_label_name (abfd, name)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
const char *name;
|
|
|
|
|
{
|
|
|
|
|
const char *colpos;
|
|
|
|
|
int digits;
|
|
|
|
|
|
|
|
|
|
/* Also include the default local-label definition. */
|
|
|
|
|
if (_bfd_elf_is_local_label_name (abfd, name))
|
|
|
|
|
return true;
|
|
|
|
|
|
|
|
|
|
if (*name != 'L')
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
/* If there's no ":", or more than one, it's not a local symbol. */
|
|
|
|
|
colpos = strchr (name, ':');
|
|
|
|
|
if (colpos == NULL || strchr (colpos + 1, ':') != NULL)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
/* Check that there are remaining characters and that they are digits. */
|
|
|
|
|
if (colpos[1] == 0)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
digits = strspn (colpos + 1, "0123456789");
|
|
|
|
|
return digits != 0 && colpos[1 + digits] == 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We get rid of the register section here. */
|
|
|
|
|
|
|
|
|
|
boolean
|
|
|
|
|
mmix_elf_final_link (abfd, info)
|
|
|
|
|
bfd *abfd;
|
|
|
|
|
struct bfd_link_info *info;
|
|
|
|
|
{
|
|
|
|
|
/* We never output a register section, though we create one for
|
|
|
|
|
temporary measures. Check that nobody entered contents into it. */
|
|
|
|
|
asection *reg_section;
|
|
|
|
|
asection **secpp;
|
|
|
|
|
|
|
|
|
|
reg_section = bfd_get_section_by_name (abfd, MMIX_REG_SECTION_NAME);
|
|
|
|
|
|
|
|
|
|
if (reg_section != NULL)
|
|
|
|
|
{
|
|
|
|
|
/* FIXME: Pass error state gracefully. */
|
|
|
|
|
if (bfd_get_section_flags (abfd, reg_section) & SEC_HAS_CONTENTS)
|
|
|
|
|
_bfd_abort (__FILE__, __LINE__, _("Register section has contents\n"));
|
|
|
|
|
|
|
|
|
|
/* FIXME: This does not seem like the proper way to kill a section,
|
|
|
|
|
but it's the way it's done elsewhere, like elf64-alpha.c. */
|
|
|
|
|
/* Really remove the section. */
|
|
|
|
|
for (secpp = &abfd->sections;
|
|
|
|
|
*secpp != reg_section;
|
|
|
|
|
secpp = &(*secpp)->next)
|
|
|
|
|
;
|
|
|
|
|
*secpp = (*secpp)->next;
|
|
|
|
|
--abfd->section_count;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (! bfd_elf64_bfd_final_link (abfd, info))
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
2001-10-31 04:07:48 +01:00
|
|
|
|
|
2001-10-30 16:20:14 +01:00
|
|
|
|
#define ELF_ARCH bfd_arch_mmix
|
|
|
|
|
#define ELF_MACHINE_CODE EM_MMIX
|
|
|
|
|
|
|
|
|
|
/* According to mmix-doc page 36 (paragraph 45), this should be (1LL << 48LL).
|
|
|
|
|
However, that's too much for something somewhere in the linker part of
|
|
|
|
|
BFD; perhaps the start-address has to be a non-zero multiple of this
|
|
|
|
|
number, or larger than this number. The symptom is that the linker
|
|
|
|
|
complains: "warning: allocated section `.text' not in segment". We
|
|
|
|
|
settle for 64k; the page-size used in examples is 8k.
|
|
|
|
|
#define ELF_MAXPAGESIZE 0x10000
|
|
|
|
|
|
|
|
|
|
Unfortunately, this causes excessive padding in the supposedly small
|
|
|
|
|
for-education programs that are the expected usage (where people would
|
|
|
|
|
inspect output). We stick to 256 bytes just to have *some* default
|
|
|
|
|
alignment. */
|
|
|
|
|
#define ELF_MAXPAGESIZE 0x100
|
|
|
|
|
|
|
|
|
|
#define TARGET_BIG_SYM bfd_elf64_mmix_vec
|
|
|
|
|
#define TARGET_BIG_NAME "elf64-mmix"
|
|
|
|
|
|
|
|
|
|
#define elf_info_to_howto_rel NULL
|
|
|
|
|
#define elf_info_to_howto mmix_info_to_howto_rela
|
|
|
|
|
#define elf_backend_relocate_section mmix_elf_relocate_section
|
|
|
|
|
#define elf_backend_gc_mark_hook mmix_elf_gc_mark_hook
|
|
|
|
|
#define elf_backend_link_output_symbol_hook \
|
|
|
|
|
mmix_elf_link_output_symbol_hook
|
|
|
|
|
#define elf_backend_add_symbol_hook mmix_elf_add_symbol_hook
|
|
|
|
|
|
|
|
|
|
#define elf_backend_check_relocs mmix_elf_check_relocs
|
|
|
|
|
#define elf_backend_symbol_processing mmix_elf_symbol_processing
|
|
|
|
|
|
|
|
|
|
#define bfd_elf64_bfd_is_local_label_name \
|
|
|
|
|
mmix_elf_is_local_label_name
|
|
|
|
|
|
|
|
|
|
#define elf_backend_may_use_rel_p 0
|
|
|
|
|
#define elf_backend_may_use_rela_p 1
|
|
|
|
|
#define elf_backend_default_use_rela_p 1
|
|
|
|
|
|
|
|
|
|
#define elf_backend_can_gc_sections 1
|
|
|
|
|
#define elf_backend_section_from_bfd_section \
|
|
|
|
|
mmix_elf_section_from_bfd_section
|
|
|
|
|
|
|
|
|
|
#define bfd_elf64_bfd_final_link mmix_elf_final_link
|
|
|
|
|
|
|
|
|
|
#include "elf64-target.h"
|