3088 lines
95 KiB
C
3088 lines
95 KiB
C
/* CRIS-specific support for 32-bit ELF.
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Copyright 2000, 2001 Free Software Foundation, Inc.
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Contributed by Axis Communications AB.
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Written by Hans-Peter Nilsson, based on elf32-fr30.c
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PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
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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/cris.h"
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/* Forward declarations. */
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static reloc_howto_type * cris_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void cris_info_to_howto_rela
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
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static boolean cris_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 bfd_reloc_status_type cris_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 cris_elf_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 asection * cris_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 boolean cris_elf_object_p PARAMS ((bfd *));
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static void cris_elf_final_write_processing PARAMS ((bfd *, boolean));
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static boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
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static boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
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struct elf_cris_link_hash_entry;
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static boolean elf_cris_discard_excess_dso_dynamics
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PARAMS ((struct elf_cris_link_hash_entry *, PTR));
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static boolean elf_cris_discard_excess_program_dynamics
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PARAMS ((struct elf_cris_link_hash_entry *, PTR));
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static boolean elf_cris_adjust_gotplt_to_got
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PARAMS ((struct elf_cris_link_hash_entry *, PTR));
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static boolean elf_cris_try_fold_plt_to_got
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PARAMS ((struct elf_cris_link_hash_entry *, PTR));
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static struct bfd_hash_entry *elf_cris_link_hash_newfunc
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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static struct bfd_link_hash_table *elf_cris_link_hash_table_create
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PARAMS ((bfd *));
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static boolean elf_cris_adjust_dynamic_symbol
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PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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static boolean elf_cris_size_dynamic_sections
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PARAMS ((bfd *, struct bfd_link_info *));
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static boolean elf_cris_finish_dynamic_symbol
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PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *));
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static boolean elf_cris_finish_dynamic_sections
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PARAMS ((bfd *, struct bfd_link_info *));
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static void elf_cris_hide_symbol
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PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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static reloc_howto_type cris_elf_howto_table [] =
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{
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/* This reloc does nothing. */
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HOWTO (R_CRIS_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_CRIS_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_CRIS_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_CRIS_8", /* name */
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false, /* partial_inplace */
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0x0000, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit absolute relocation. */
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HOWTO (R_CRIS_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_CRIS_16", /* name */
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false, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32 bit absolute relocation. */
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HOWTO (R_CRIS_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_CRIS_32", /* name */
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false, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* An 8 bit PC-relative relocation. */
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HOWTO (R_CRIS_8_PCREL, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CRIS_8_PCREL", /* name */
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false, /* partial_inplace */
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0x0000, /* src_mask */
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0x00ff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 16 bit PC-relative relocation. */
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HOWTO (R_CRIS_16_PCREL, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CRIS_16", /* name */
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false, /* partial_inplace */
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0x00000000, /* src_mask */
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0x0000ffff, /* dst_mask */
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true), /* pcrel_offset */
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/* A 32 bit PC-relative relocation. */
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HOWTO (R_CRIS_32_PCREL, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CRIS_32", /* name */
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false, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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true), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_CRIS_GNU_VTINHERIT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_CRIS_GNU_VTENTRY, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_CRIS_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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/* This is used only by the dynamic linker. The symbol should exist
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both in the object being run and in some shared library. The
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dynamic linker copies the data addressed by the symbol from the
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shared library into the object, because the object being
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run has to have the data at some particular address. */
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HOWTO (R_CRIS_COPY, /* 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_CRIS_COPY", /* 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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/* Like R_CRIS_32, but used when setting global offset table entries. */
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HOWTO (R_CRIS_GLOB_DAT, /* 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_CRIS_GLOB_DAT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Marks a procedure linkage table entry for a symbol. */
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HOWTO (R_CRIS_JUMP_SLOT, /* 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_CRIS_JUMP_SLOT", /* 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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/* Used only by the dynamic linker. When the object is run, this
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longword is set to the load address of the object, plus the
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addend. */
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HOWTO (R_CRIS_RELATIVE, /* 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_CRIS_RELATIVE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
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HOWTO (R_CRIS_16_GOT, /* 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_CRIS_16_GOT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_CRIS_32_GOT, /* 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_CRIS_32_GOT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
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the GOT table for the symbol. */
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HOWTO (R_CRIS_16_GOTPLT, /* 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_CRIS_16_GOTPLT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_CRIS_32_GOTPLT, /* 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_CRIS_32_GOTPLT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
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be necessary. */
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HOWTO (R_CRIS_32_GOTREL, /* 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_CRIS_32_GOTREL", /* name */
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||
false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32-bit offset from GOT to entry for this symbol in PLT and request
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to create PLT entry for symbol. */
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HOWTO (R_CRIS_32_PLT_GOTREL, /* 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 */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_32_PLT_GOTREL", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 32-bit offset from PC (location after the relocation) + addend to
|
||
entry for this symbol in PLT and request to create PLT entry for
|
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symbol. */
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||
HOWTO (R_CRIS_32_PLT_PCREL, /* type */
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||
0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_32_PLT_PCREL", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true) /* pcrel_offset */
|
||
};
|
||
|
||
/* Map BFD reloc types to CRIS ELF reloc types. */
|
||
|
||
struct cris_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
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||
unsigned int cris_reloc_val;
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||
};
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||
|
||
static const struct cris_reloc_map cris_reloc_map [] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_CRIS_NONE },
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||
{ BFD_RELOC_8, R_CRIS_8 },
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{ BFD_RELOC_16, R_CRIS_16 },
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||
{ BFD_RELOC_32, R_CRIS_32 },
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||
{ BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
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||
{ BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
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{ BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
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{ BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
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{ BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
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{ BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
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||
{ BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
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||
{ BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
|
||
{ BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
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{ BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
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{ BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
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{ BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
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{ BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
|
||
{ BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
|
||
{ BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }
|
||
};
|
||
|
||
static reloc_howto_type *
|
||
cris_reloc_type_lookup (abfd, code)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]);
|
||
--i;)
|
||
if (cris_reloc_map [i].bfd_reloc_val == code)
|
||
return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Set the howto pointer for an CRIS ELF reloc. */
|
||
|
||
static void
|
||
cris_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
arelent * cache_ptr;
|
||
Elf32_Internal_Rela * dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
|
||
cache_ptr->howto = & cris_elf_howto_table [r_type];
|
||
}
|
||
|
||
/* The name of the dynamic interpreter. This is put in the .interp
|
||
section. */
|
||
|
||
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
|
||
|
||
/* The size in bytes of an entry in the procedure linkage table. */
|
||
|
||
#define PLT_ENTRY_SIZE 20
|
||
|
||
/* The first entry in an absolute procedure linkage table looks like this. */
|
||
|
||
static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
|
||
{
|
||
0xfc, 0xe1,
|
||
0x7e, 0x7e, /* push mof. */
|
||
0x7f, 0x0d, /* (dip [pc+]) */
|
||
0, 0, 0, 0, /* Replaced with address of .got + 4. */
|
||
0x30, 0x7a, /* move [...],mof */
|
||
0x7f, 0x0d, /* (dip [pc+]) */
|
||
0, 0, 0, 0, /* Replaced with address of .got + 8. */
|
||
0x30, 0x09, /* jump [...] */
|
||
};
|
||
|
||
/* Subsequent entries in an absolute procedure linkage table look like
|
||
this. */
|
||
|
||
static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
|
||
{
|
||
0x7f, 0x0d, /* (dip [pc+]) */
|
||
0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
|
||
0x30, 0x09, /* jump [...] */
|
||
0x3f, 0x7e, /* move [pc+],mof */
|
||
0, 0, 0, 0, /* Replaced with offset into relocation table. */
|
||
0x2f, 0xfe, /* add.d [pc+],pc */
|
||
0xec, 0xff,
|
||
0xff, 0xff /* Replaced with offset to start of .plt. */
|
||
};
|
||
|
||
/* The first entry in a PIC procedure linkage table looks like this. */
|
||
|
||
static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
|
||
{
|
||
0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
|
||
0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
|
||
0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
|
||
0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
|
||
};
|
||
|
||
/* Subsequent entries in a PIC procedure linkage table look like this. */
|
||
|
||
static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
|
||
{
|
||
0x6f, 0x0d, /* (bdap [pc+].d,r0) */
|
||
0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
|
||
0x30, 0x09, /* jump [...] */
|
||
0x3f, 0x7e, /* move [pc+],mof */
|
||
0, 0, 0, 0, /* Replaced with offset into relocation table. */
|
||
0x2f, 0xfe, /* add.d [pc+],pc */
|
||
0xec, 0xff, /* Replaced with offset to start of .plt. */
|
||
0xff, 0xff
|
||
};
|
||
|
||
/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
|
||
(and most other PIC/shlib stuff). Check that we don't drift away
|
||
without reason.
|
||
|
||
The CRIS linker, like the m68k and i386 linkers (and probably the rest
|
||
too) needs to keep track of the number of relocs that it decides to
|
||
copy in check_relocs for each symbol. This is so that it can discard
|
||
PC relative relocs if it doesn't need them when linking with
|
||
-Bsymbolic. We store the information in a field extending the regular
|
||
ELF linker hash table. */
|
||
|
||
/* This structure keeps track of the number of PC relative relocs we have
|
||
copied for a given symbol. */
|
||
|
||
struct elf_cris_pcrel_relocs_copied
|
||
{
|
||
/* Next section. */
|
||
struct elf_cris_pcrel_relocs_copied *next;
|
||
/* A section in dynobj. */
|
||
asection *section;
|
||
/* Number of relocs copied in this section. */
|
||
bfd_size_type count;
|
||
};
|
||
|
||
/* CRIS ELF linker hash entry. */
|
||
|
||
struct elf_cris_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry root;
|
||
|
||
/* Number of PC relative relocs copied for this symbol. */
|
||
struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
|
||
|
||
/* The GOTPLT references are CRIS-specific; the goal is to avoid having
|
||
both a general GOT and a PLT-specific GOT entry for the same symbol,
|
||
when it is referenced both as a function and as a function pointer.
|
||
|
||
Number of GOTPLT references for a function. */
|
||
bfd_signed_vma gotplt_refcount;
|
||
|
||
/* Actual GOTPLT index for this symbol, if applicable, or zero if not
|
||
(zero is never used as an index). FIXME: We should be able to fold
|
||
this with gotplt_refcount in a union, like the got and plt unions in
|
||
elf_link_hash_entry. */
|
||
bfd_size_type gotplt_offset;
|
||
};
|
||
|
||
/* CRIS ELF linker hash table. */
|
||
|
||
struct elf_cris_link_hash_table
|
||
{
|
||
struct elf_link_hash_table root;
|
||
|
||
/* We can't use the PLT offset and calculate to get the GOTPLT offset,
|
||
since we try and avoid creating GOTPLT:s when there's already a GOT.
|
||
Instead, we keep and update the next available index here. */
|
||
bfd_size_type next_gotplt_entry;
|
||
};
|
||
|
||
/* Traverse a CRIS ELF linker hash table. */
|
||
|
||
#define elf_cris_link_hash_traverse(table, func, info) \
|
||
(elf_link_hash_traverse \
|
||
(&(table)->root, \
|
||
(boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
|
||
(info)))
|
||
|
||
/* Get the CRIS ELF linker hash table from a link_info structure. */
|
||
|
||
#define elf_cris_hash_table(p) \
|
||
((struct elf_cris_link_hash_table *) (p)->hash)
|
||
|
||
/* Create an entry in a CRIS ELF linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
elf_cris_link_hash_newfunc (entry, table, string)
|
||
struct bfd_hash_entry *entry;
|
||
struct bfd_hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct elf_cris_link_hash_entry *ret =
|
||
(struct elf_cris_link_hash_entry *) entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (ret == (struct elf_cris_link_hash_entry *) NULL)
|
||
ret = ((struct elf_cris_link_hash_entry *)
|
||
bfd_hash_allocate (table,
|
||
sizeof (struct elf_cris_link_hash_entry)));
|
||
if (ret == (struct elf_cris_link_hash_entry *) NULL)
|
||
return (struct bfd_hash_entry *) ret;
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct elf_cris_link_hash_entry *)
|
||
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
||
table, string));
|
||
if (ret != (struct elf_cris_link_hash_entry *) NULL)
|
||
{
|
||
ret->pcrel_relocs_copied = NULL;
|
||
ret->gotplt_refcount = 0;
|
||
ret->gotplt_offset = 0;
|
||
}
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
/* Create a CRIS ELF linker hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
elf_cris_link_hash_table_create (abfd)
|
||
bfd *abfd;
|
||
{
|
||
struct elf_cris_link_hash_table *ret;
|
||
|
||
ret = ((struct elf_cris_link_hash_table *)
|
||
bfd_alloc (abfd, sizeof (struct elf_cris_link_hash_table)));
|
||
if (ret == (struct elf_cris_link_hash_table *) NULL)
|
||
return NULL;
|
||
|
||
if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
elf_cris_link_hash_newfunc))
|
||
{
|
||
bfd_release (abfd, ret);
|
||
return NULL;
|
||
}
|
||
|
||
/* Initialize to skip over the first three entries in the gotplt; they
|
||
are used for run-time symbol evaluation. */
|
||
ret->next_gotplt_entry = 12;
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Perform a single relocation. By default we use the standard BFD
|
||
routines, with a few tweaks. */
|
||
|
||
static bfd_reloc_status_type
|
||
cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
|
||
relocation)
|
||
reloc_howto_type * howto;
|
||
bfd * input_bfd;
|
||
asection * input_section;
|
||
bfd_byte * contents;
|
||
Elf_Internal_Rela * rel;
|
||
bfd_vma relocation;
|
||
{
|
||
bfd_reloc_status_type r;
|
||
|
||
/* PC-relative relocations are relative to the position *after*
|
||
the reloc. Note that for R_CRIS_8_PCREL the adjustment is
|
||
not a single byte, since PC must be 16-bit-aligned. */
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
/* Check that the 16-bit GOT relocs are positive. */
|
||
case R_CRIS_16_GOTPLT:
|
||
case R_CRIS_16_GOT:
|
||
if ((bfd_signed_vma) relocation < 0)
|
||
return bfd_reloc_overflow;
|
||
break;
|
||
|
||
case R_CRIS_32_PLT_PCREL:
|
||
case R_CRIS_32_PCREL:
|
||
relocation -= 2;
|
||
/* Fall through. */
|
||
case R_CRIS_8_PCREL:
|
||
case R_CRIS_16_PCREL:
|
||
relocation -= 2;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
return r;
|
||
}
|
||
|
||
/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
|
||
copied, for further comments. */
|
||
|
||
static boolean
|
||
cris_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;
|
||
{
|
||
bfd *dynobj;
|
||
Elf_Internal_Shdr * symtab_hdr;
|
||
struct elf_link_hash_entry ** sym_hashes;
|
||
bfd_vma *local_got_offsets;
|
||
asection *sgot;
|
||
asection *splt;
|
||
asection *sreloc;
|
||
Elf_Internal_Rela * rel;
|
||
Elf_Internal_Rela * relend;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
local_got_offsets = elf_local_got_offsets (input_bfd);
|
||
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
relend = relocs + input_section->reloc_count;
|
||
|
||
/* It seems this can happen with erroneous or unsupported input (mixing
|
||
a.out and elf in an archive, for example.) */
|
||
if (sym_hashes == NULL)
|
||
return false;
|
||
|
||
sgot = NULL;
|
||
splt = NULL;
|
||
sreloc = NULL;
|
||
|
||
if (dynobj != NULL)
|
||
{
|
||
splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
}
|
||
|
||
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;
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
if ( r_type == R_CRIS_GNU_VTINHERIT
|
||
|| r_type == R_CRIS_GNU_VTENTRY)
|
||
continue;
|
||
|
||
r_symndx = ELF32_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 = cris_elf_howto_table + r_type;
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections [r_symndx];
|
||
relocation = (sec->output_section->vma
|
||
+ sec->output_offset
|
||
+ sym->st_value);
|
||
|
||
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;
|
||
|
||
/* Perhaps we should detect the cases that
|
||
sec->output_section is expected to be NULL like i386 and
|
||
m68k, but apparently (and according to elfxx-ia64.c) all
|
||
valid cases are where the symbol is defined in a shared
|
||
object which we link dynamically against. This includes
|
||
PLT relocs for which we've created a PLT entry and other
|
||
relocs for which we're prepared to create dynamic
|
||
relocations.
|
||
|
||
For now, new situations cause us to just err when
|
||
sec->output_offset is NULL but the object with the symbol
|
||
is *not* dynamically linked against. Thus this will
|
||
automatically remind us so we can see if there are other
|
||
valid cases we need to revisit. */
|
||
if ((sec->output_section == NULL
|
||
&& (sec->owner->flags & DYNAMIC) != 0)
|
||
|
||
/* Here follow the cases where the relocation value must
|
||
be zero (or when further handling is simplified when
|
||
zero). I can't claim to understand the various
|
||
conditions and they weren't described in the files
|
||
where I copied them from (elf32-m68k.c and
|
||
elf32-i386.c), but let's mention examples of where
|
||
they happen. FIXME: Perhaps define and use a
|
||
dynamic_symbol_p function like ia64.
|
||
|
||
- When creating a shared library, we can have an
|
||
ordinary relocation for a symbol defined in a shared
|
||
library (perhaps the one we create). We then make
|
||
the relocation value zero, as the value seen now will
|
||
be added into the relocation addend in this shared
|
||
library, but must be handled only at dynamic-link
|
||
time. FIXME: Not sure this example covers the
|
||
h->elf_link_hash_flags test, though it's there in
|
||
other targets. */
|
||
|| (info->shared
|
||
&& ((! info->symbolic && h->dynindx != -1)
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
&& (input_section->flags & SEC_ALLOC) != 0
|
||
&& (r_type == R_CRIS_8
|
||
|| r_type == R_CRIS_16
|
||
|| r_type == R_CRIS_32
|
||
|| r_type == R_CRIS_8_PCREL
|
||
|| r_type == R_CRIS_16_PCREL
|
||
|| r_type == R_CRIS_32_PCREL)))
|
||
relocation = 0;
|
||
else if (sec->output_section != NULL)
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
else
|
||
{
|
||
if (input_bfd->my_archive)
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s): unresolvable relocation %s against symbol `%s' from %s section"),
|
||
bfd_get_filename (bfd_my_archive (input_bfd)),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
name,
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
else
|
||
(*_bfd_error_handler)
|
||
(_("%s: unresolvable relocation %s against symbol `%s' from %s section"),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
name,
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
relocation = 0;
|
||
else if (info->shared
|
||
&& !info->symbolic
|
||
&& !info->no_undefined
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
relocation = 0;
|
||
else
|
||
{
|
||
if (!(info->callbacks->undefined_symbol
|
||
(info, name, input_bfd,
|
||
input_section, rel->r_offset,
|
||
(!info->shared || info->no_undefined
|
||
|| ELF_ST_VISIBILITY (h->other)))))
|
||
return false;
|
||
relocation = 0;
|
||
}
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_CRIS_16_GOTPLT:
|
||
case R_CRIS_32_GOTPLT:
|
||
/* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
|
||
but we require a PLT, and the PLT handling will take care of
|
||
filling in the PLT-specific GOT entry. For the GOT offset,
|
||
calculate it as we do when filling it in for the .got.plt
|
||
section. If we don't have a PLT, punt to GOT handling. */
|
||
if (h != NULL
|
||
&& ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
|
||
{
|
||
asection *sgotplt
|
||
= bfd_get_section_by_name (dynobj, ".got.plt");
|
||
bfd_vma got_offset;
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
BFD_ASSERT (sgotplt != NULL);
|
||
|
||
got_offset
|
||
= ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
|
||
|
||
relocation = got_offset;
|
||
break;
|
||
}
|
||
|
||
/* We didn't make a PLT entry for this symbol. Maybe everything is
|
||
folded into the GOT. Other than folding, this happens when
|
||
statically linking PIC code, or when using -Bsymbolic. Check
|
||
that we instead have a GOT entry as done for us by
|
||
elf_cris_adjust_dynamic_symbol, and drop through into the
|
||
ordinary GOT cases. */
|
||
if (h != NULL && h->got.offset == (bfd_vma) -1)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: No PLT nor GOT for relocation %s against symbol `%s' from %s section"),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
name[0] != '\0' ? name : _("[whose name is lost]"),
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
|
||
/* FIXME: Perhaps blaming input is not the right thing to
|
||
do; this is probably an internal error. But it is true
|
||
that we didn't like that particular input. */
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
/* Fall through. */
|
||
|
||
/* The size of the actual relocation is not used here; we only
|
||
fill in the GOT table here. */
|
||
case R_CRIS_16_GOT:
|
||
case R_CRIS_32_GOT:
|
||
{
|
||
bfd_vma off;
|
||
|
||
/* Note that despite using RELA relocations, the .got contents
|
||
is always filled in with the link-relative relocation
|
||
value; the addend. */
|
||
|
||
if (h != NULL)
|
||
{
|
||
off = h->got.offset;
|
||
BFD_ASSERT (off != (bfd_vma) -1);
|
||
|
||
if (!elf_hash_table (info)->dynamic_sections_created
|
||
|| (! info->shared && h->dynindx == -1)
|
||
|| (info->shared
|
||
&& (info->symbolic || h->dynindx == -1)
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
|
||
{
|
||
/* This wasn't checked above for ! info->shared, but
|
||
must hold there if we get here; the symbol must not
|
||
be used in, or defined by a DSO. (Note that
|
||
checking for ELF_LINK_HASH_DEF_REGULAR doesn't
|
||
catch all cases.) */
|
||
BFD_ASSERT (info->shared
|
||
|| (h->elf_link_hash_flags
|
||
& (ELF_LINK_HASH_REF_DYNAMIC
|
||
| ELF_LINK_HASH_DEF_DYNAMIC)) == 0);
|
||
|
||
/* This is actually a static link, or it is a
|
||
-Bsymbolic link and the symbol is defined
|
||
locally, or the symbol was forced to be local
|
||
because of a version file, or we're not creating a
|
||
dynamic object and the symbol isn't referred to by
|
||
a dynamic object. We must initialize
|
||
this entry in the global offset table. Since
|
||
the offset must always be a multiple of 4, we
|
||
use the least significant bit to record whether
|
||
we have initialized it already.
|
||
|
||
When doing a dynamic link, we create a .rela.got
|
||
relocation entry to initialize the value. This
|
||
is done in the finish_dynamic_symbol routine. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation,
|
||
sgot->contents + off);
|
||
h->got.offset |= 1;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
BFD_ASSERT (local_got_offsets != NULL
|
||
&& local_got_offsets[r_symndx] != (bfd_vma) -1);
|
||
|
||
off = local_got_offsets[r_symndx];
|
||
|
||
/* The offset must always be a multiple of 4. We use
|
||
the least significant bit to record whether we have
|
||
already generated the necessary reloc. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation, sgot->contents + off);
|
||
|
||
if (info->shared)
|
||
{
|
||
asection *srelgot;
|
||
Elf_Internal_Rela outrel;
|
||
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
BFD_ASSERT (srelgot != NULL);
|
||
|
||
outrel.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ off);
|
||
outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
|
||
outrel.r_addend = relocation;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
||
(((Elf32_External_Rela *)
|
||
srelgot->contents)
|
||
+ srelgot->reloc_count));
|
||
++srelgot->reloc_count;
|
||
}
|
||
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
}
|
||
|
||
relocation = sgot->output_offset + off;
|
||
if (rel->r_addend != 0)
|
||
{
|
||
/* We can't do anything for a relocation which is against
|
||
a symbol *plus offset*. GOT holds relocations for
|
||
symbols. Make this an error; the compiler isn't
|
||
allowed to pass us these kinds of things. */
|
||
if (h == NULL)
|
||
(*_bfd_error_handler)
|
||
(_("%s: relocation %s with non-zero addend %d against local symbol from %s section"),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
rel->r_addend,
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
else
|
||
(*_bfd_error_handler)
|
||
(_("%s: relocation %s with non-zero addend %d against symbol `%s' from %s section"),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
rel->r_addend,
|
||
name[0] != '\0' ? name : _("[whose name is lost]"),
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_CRIS_32_GOTREL:
|
||
/* This relocation must only be performed against local symbols. */
|
||
if (h != NULL)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: relocation %s is not allowed for global symbol: `%s' from %s section"),
|
||
bfd_get_filename (input_bfd),
|
||
cris_elf_howto_table[r_type].name,
|
||
name,
|
||
bfd_get_section_name (input_bfd, input_section));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
/* This relocation is like a PC-relative one, except the
|
||
reference point is the location of GOT. Note that
|
||
sgot->output_offset is not involved in this calculation. We
|
||
always want the start of entire .got section, not the
|
||
position after the reserved header. */
|
||
relocation -= sgot->output_section->vma;
|
||
break;
|
||
|
||
case R_CRIS_32_PLT_PCREL:
|
||
/* Relocation is to the entry for this symbol in the
|
||
procedure linkage table. */
|
||
|
||
/* Resolve a PLT_PCREL reloc against a local symbol directly,
|
||
without using the procedure linkage table. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
if (h->plt.offset == (bfd_vma) -1
|
||
|| splt == NULL)
|
||
{
|
||
/* We didn't make a PLT entry for this symbol. This
|
||
happens when statically linking PIC code, or when
|
||
using -Bsymbolic. */
|
||
break;
|
||
}
|
||
|
||
relocation = (splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset);
|
||
break;
|
||
|
||
case R_CRIS_32_PLT_GOTREL:
|
||
/* Like R_CRIS_32_PLT_PCREL, but the reference point is the
|
||
start of the .got section. See also comment at
|
||
R_CRIS_32_GOT. */
|
||
relocation -= sgot->output_section->vma;
|
||
|
||
/* Resolve a PLT_GOTREL reloc against a local symbol directly,
|
||
without using the procedure linkage table. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
if (h->plt.offset == (bfd_vma) -1
|
||
|| splt == NULL)
|
||
{
|
||
/* We didn't make a PLT entry for this symbol. This
|
||
happens when statically linking PIC code, or when
|
||
using -Bsymbolic. */
|
||
break;
|
||
}
|
||
|
||
relocation = (splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset
|
||
- sgot->output_section->vma);
|
||
break;
|
||
|
||
case R_CRIS_8_PCREL:
|
||
case R_CRIS_16_PCREL:
|
||
case R_CRIS_32_PCREL:
|
||
/* If the symbol was local, we need no shlib-specific handling. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
/* Fall through. */
|
||
case R_CRIS_8:
|
||
case R_CRIS_16:
|
||
case R_CRIS_32:
|
||
if (info->shared
|
||
&& (input_section->flags & SEC_ALLOC) != 0
|
||
&& ((r_type != R_CRIS_8_PCREL
|
||
&& r_type != R_CRIS_16_PCREL
|
||
&& r_type != R_CRIS_32_PCREL)
|
||
|| (!info->symbolic
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
boolean skip, relocate;
|
||
|
||
/* When generating a shared object, these relocations
|
||
are copied into the output file to be resolved at run
|
||
time. */
|
||
|
||
if (sreloc == NULL)
|
||
{
|
||
const char *name;
|
||
|
||
name = (bfd_elf_string_from_elf_section
|
||
(input_bfd,
|
||
elf_elfheader (input_bfd)->e_shstrndx,
|
||
elf_section_data (input_section)->rel_hdr.sh_name));
|
||
if (name == NULL)
|
||
return false;
|
||
|
||
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
|
||
&& strcmp (bfd_get_section_name (input_bfd,
|
||
input_section),
|
||
name + 5) == 0);
|
||
|
||
sreloc = bfd_get_section_by_name (dynobj, name);
|
||
|
||
/* That section should have been created in
|
||
cris_elf_check_relocs, but that function will not be
|
||
called for objects which fail in
|
||
cris_elf_merge_private_bfd_data. */
|
||
if (sreloc == NULL)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: Internal inconsistency; no relocation section %s"),
|
||
bfd_get_filename (input_bfd),
|
||
name);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
skip = false;
|
||
|
||
if (elf_section_data (input_section)->stab_info == NULL)
|
||
outrel.r_offset = rel->r_offset;
|
||
else
|
||
{
|
||
bfd_vma off;
|
||
|
||
off = (_bfd_stab_section_offset
|
||
(output_bfd, &elf_hash_table (info)->stab_info,
|
||
input_section,
|
||
&elf_section_data (input_section)->stab_info,
|
||
rel->r_offset));
|
||
if (off == (bfd_vma) -1)
|
||
skip = true;
|
||
outrel.r_offset = off;
|
||
}
|
||
|
||
outrel.r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
|
||
if (skip)
|
||
{
|
||
memset (&outrel, 0, sizeof outrel);
|
||
relocate = false;
|
||
}
|
||
/* h->dynindx may be -1 if the symbol was marked to
|
||
become local. */
|
||
else if (h != NULL
|
||
&& ((! info->symbolic && h->dynindx != -1)
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|
||
{
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
relocate = false;
|
||
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
if (r_type == R_CRIS_32)
|
||
{
|
||
relocate = true;
|
||
outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
long indx;
|
||
|
||
if (h == NULL)
|
||
sec = local_sections[r_symndx];
|
||
else
|
||
{
|
||
BFD_ASSERT (h->root.type == bfd_link_hash_defined
|
||
|| (h->root.type
|
||
== bfd_link_hash_defweak));
|
||
sec = h->root.u.def.section;
|
||
}
|
||
if (sec != NULL && bfd_is_abs_section (sec))
|
||
indx = 0;
|
||
else if (sec == NULL || sec->owner == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
asection *osec;
|
||
|
||
osec = sec->output_section;
|
||
indx = elf_section_data (osec)->dynindx;
|
||
BFD_ASSERT (indx > 0);
|
||
}
|
||
|
||
relocate = false;
|
||
outrel.r_info = ELF32_R_INFO (indx, r_type);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
}
|
||
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
||
(((Elf32_External_Rela *)
|
||
sreloc->contents)
|
||
+ sreloc->reloc_count));
|
||
++sreloc->reloc_count;
|
||
|
||
/* This reloc will be computed at runtime, so there's no
|
||
need to do anything now, except for R_CRIS_32 relocations
|
||
that have been turned into R_CRIS_RELATIVE. */
|
||
if (!relocate)
|
||
continue;
|
||
}
|
||
|
||
break;
|
||
}
|
||
|
||
r = cris_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel, relocation);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
const char * msg = (const char *) NULL;
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_overflow:
|
||
r = info->callbacks->reloc_overflow
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset);
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
r = info->callbacks->undefined_symbol
|
||
(info, name, input_bfd, input_section, rel->r_offset,
|
||
true);
|
||
break;
|
||
|
||
case bfd_reloc_outofrange:
|
||
msg = _("internal error: out of range error");
|
||
break;
|
||
|
||
case bfd_reloc_notsupported:
|
||
msg = _("internal error: unsupported relocation error");
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
msg = _("internal error: dangerous relocation");
|
||
break;
|
||
|
||
default:
|
||
msg = _("internal error: unknown error");
|
||
break;
|
||
}
|
||
|
||
if (msg)
|
||
r = info->callbacks->warning
|
||
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
||
|
||
if (! r)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
static boolean
|
||
elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
{
|
||
bfd *dynobj;
|
||
int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
if (h->plt.offset != (bfd_vma) -1)
|
||
{
|
||
asection *splt;
|
||
asection *sgotplt;
|
||
asection *sgot;
|
||
asection *srela;
|
||
bfd_vma got_base;
|
||
|
||
bfd_vma gotplt_offset
|
||
= ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
|
||
Elf_Internal_Rela rela;
|
||
boolean has_gotplt = gotplt_offset != 0;
|
||
|
||
/* Get the index in the procedure linkage table which
|
||
corresponds to this symbol. This is the index of this symbol
|
||
in all the symbols for which we are making plt entries. The
|
||
first entry in the procedure linkage table is reserved. */
|
||
/* We have to count backwards here, and the result is only valid as
|
||
an index into .got.plt and its relocations. FIXME: Constants... */
|
||
bfd_vma gotplt_index = gotplt_offset/4 - 3;
|
||
|
||
/* Get the offset into the .got table of the entry that corresponds
|
||
to this function. Note that we embed knowledge that "incoming"
|
||
.got goes after .got.plt in the output without padding (pointer
|
||
aligned). However, that knowledge is present in several other
|
||
places too, here and in elflink.h at least. */
|
||
bfd_vma got_offset
|
||
= (has_gotplt
|
||
? gotplt_offset
|
||
: h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
|
||
|
||
/* This symbol has an entry in the procedure linkage table. Set it
|
||
up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
|
||
srela = bfd_get_section_by_name (dynobj, ".rela.plt");
|
||
BFD_ASSERT (splt != NULL && sgotplt != NULL
|
||
&& (! has_gotplt || srela != NULL));
|
||
|
||
got_base = sgotplt->output_section->vma + sgotplt->output_offset;
|
||
|
||
/* Fill in the entry in the procedure linkage table. */
|
||
if (! info->shared)
|
||
{
|
||
memcpy (splt->contents + h->plt.offset, elf_cris_plt_entry,
|
||
PLT_ENTRY_SIZE);
|
||
|
||
/* We need to enter the absolute address of the GOT entry here. */
|
||
bfd_put_32 (output_bfd, got_base + got_offset,
|
||
splt->contents + h->plt.offset + plt_off1);
|
||
}
|
||
else
|
||
{
|
||
memcpy (splt->contents + h->plt.offset, elf_cris_pic_plt_entry,
|
||
PLT_ENTRY_SIZE);
|
||
bfd_put_32 (output_bfd, got_offset,
|
||
splt->contents + h->plt.offset + plt_off1);
|
||
}
|
||
|
||
/* Fill in the plt entry and make a relocation, if this is a "real"
|
||
PLT entry. */
|
||
if (has_gotplt)
|
||
{
|
||
/* Fill in the offset into the reloc table. */
|
||
bfd_put_32 (output_bfd,
|
||
gotplt_index * sizeof (Elf32_External_Rela),
|
||
splt->contents + h->plt.offset + plt_off2);
|
||
|
||
/* Fill in the offset to the first PLT entry, where to "jump". */
|
||
bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3 + 4),
|
||
splt->contents + h->plt.offset + plt_off3);
|
||
|
||
/* Fill in the entry in the global offset table with the address of
|
||
the relocating stub. */
|
||
bfd_put_32 (output_bfd,
|
||
(splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset
|
||
+ 8),
|
||
sgotplt->contents + got_offset);
|
||
|
||
/* Fill in the entry in the .rela.plt section. */
|
||
rela.r_offset = (sgotplt->output_section->vma
|
||
+ sgotplt->output_offset
|
||
+ got_offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
|
||
rela.r_addend = 0;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela,
|
||
((Elf32_External_Rela *) srela->contents
|
||
+ gotplt_index));
|
||
}
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
/* Mark the symbol as undefined, rather than as defined in
|
||
the .plt section. Leave the value alone. */
|
||
sym->st_shndx = SHN_UNDEF;
|
||
|
||
/* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
|
||
know whether resetting the value is significant; if it really
|
||
is, rather than a quirk or bug in the sparc port, then I
|
||
believe we'd see this elsewhere. */
|
||
/* If the symbol is weak, we do need to clear the value.
|
||
Otherwise, the PLT entry would provide a definition for
|
||
the symbol even if the symbol wasn't defined anywhere,
|
||
and so the symbol would never be NULL. */
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
|
||
== 0)
|
||
sym->st_value = 0;
|
||
}
|
||
}
|
||
|
||
/* We don't emit .got relocs for symbols that aren't in the
|
||
dynamic-symbols table for an ordinary program. */
|
||
if (h->got.offset != (bfd_vma) -1
|
||
&& (info->shared || h->dynindx != -1))
|
||
{
|
||
asection *sgot;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbol has an entry in the global offset table. Set it up. */
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
srela = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
BFD_ASSERT (sgot != NULL && srela != NULL);
|
||
|
||
rela.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ (h->got.offset &~ 1));
|
||
|
||
/* If this is a static link, or it is a -Bsymbolic link and the
|
||
symbol is defined locally or was forced to be local because
|
||
of a version file, we just want to emit a RELATIVE reloc.
|
||
The entry in the global offset table will already have been
|
||
initialized in the relocate_section function. */
|
||
if (! elf_hash_table (info)->dynamic_sections_created
|
||
|| (info->shared
|
||
&& (info->symbolic || h->dynindx == -1)
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
|
||
{
|
||
rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
|
||
rela.r_addend = bfd_get_signed_32 (output_bfd,
|
||
(sgot->contents
|
||
+ (h->got.offset & ~1)));
|
||
}
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0,
|
||
sgot->contents + (h->got.offset & ~1));
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela,
|
||
((Elf32_External_Rela *) srela->contents
|
||
+ srela->reloc_count));
|
||
++srela->reloc_count;
|
||
}
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbol needs a copy reloc. Set it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1
|
||
&& (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak));
|
||
|
||
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
||
".rela.bss");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
rela.r_offset = (h->root.u.def.value
|
||
+ h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
|
||
rela.r_addend = 0;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela,
|
||
((Elf32_External_Rela *) s->contents
|
||
+ s->reloc_count));
|
||
++s->reloc_count;
|
||
}
|
||
|
||
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
||
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
||
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static boolean
|
||
elf_cris_finish_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *sgot;
|
||
asection *sdyn;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
||
BFD_ASSERT (sgot != NULL);
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
asection *splt;
|
||
Elf32_External_Dyn *dyncon, *dynconend;
|
||
|
||
splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
BFD_ASSERT (splt != NULL && sdyn != NULL);
|
||
|
||
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
||
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
|
||
for (; dyncon < dynconend; dyncon++)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
asection *s;
|
||
|
||
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case DT_PLTGOT:
|
||
s = bfd_get_section_by_name (output_bfd, ".got");
|
||
BFD_ASSERT (s != NULL);
|
||
dyn.d_un.d_ptr = s->vma;
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
|
||
case DT_JMPREL:
|
||
/* Yes, we *can* have a .plt and no .plt.rela, for instance
|
||
if all symbols are found in the .got (not .got.plt). */
|
||
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
||
dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
|
||
case DT_PLTRELSZ:
|
||
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
||
if (s == NULL)
|
||
dyn.d_un.d_val = 0;
|
||
else if (s->_cooked_size != 0)
|
||
dyn.d_un.d_val = s->_cooked_size;
|
||
else
|
||
dyn.d_un.d_val = s->_raw_size;
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
|
||
case DT_RELASZ:
|
||
/* The procedure linkage table relocs (DT_JMPREL) should
|
||
not be included in the overall relocs (DT_RELA).
|
||
Therefore, we override the DT_RELASZ entry here to
|
||
make it not include the JMPREL relocs. Since the
|
||
linker script arranges for .rela.plt to follow all
|
||
other relocation sections, we don't have to worry
|
||
about changing the DT_RELA entry. */
|
||
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
||
if (s != NULL)
|
||
{
|
||
if (s->_cooked_size != 0)
|
||
dyn.d_un.d_val -= s->_cooked_size;
|
||
else
|
||
dyn.d_un.d_val -= s->_raw_size;
|
||
}
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Fill in the first entry in the procedure linkage table. */
|
||
if (splt->_raw_size > 0)
|
||
{
|
||
if (info->shared)
|
||
memcpy (splt->contents, elf_cris_pic_plt0_entry, PLT_ENTRY_SIZE);
|
||
else
|
||
{
|
||
memcpy (splt->contents, elf_cris_plt0_entry, PLT_ENTRY_SIZE);
|
||
bfd_put_32 (output_bfd,
|
||
sgot->output_section->vma + sgot->output_offset + 4,
|
||
splt->contents + 6);
|
||
bfd_put_32 (output_bfd,
|
||
sgot->output_section->vma + sgot->output_offset + 8,
|
||
splt->contents + 14);
|
||
|
||
elf_section_data (splt->output_section)->this_hdr.sh_entsize
|
||
= PLT_ENTRY_SIZE;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Fill in the first three entries in the global offset table. */
|
||
if (sgot->_raw_size > 0)
|
||
{
|
||
if (sdyn == NULL)
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
||
else
|
||
bfd_put_32 (output_bfd,
|
||
sdyn->output_section->vma + sdyn->output_offset,
|
||
sgot->contents);
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
||
}
|
||
|
||
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
cris_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 (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_CRIS_GNU_VTINHERIT:
|
||
case R_CRIS_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
|
||
{
|
||
if (!(elf_bad_symtab (abfd)
|
||
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
|
||
&& ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
|
||
&& sym->st_shndx != SHN_COMMON))
|
||
{
|
||
return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
static boolean
|
||
cris_elf_gc_sweep_hook (abfd, info, sec, relocs)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info * info ATTRIBUTE_UNUSED;
|
||
asection * sec ATTRIBUTE_UNUSED;
|
||
const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
bfd *dynobj;
|
||
asection *sgot;
|
||
asection *srelgot;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
if (dynobj == NULL)
|
||
return true;
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_CRIS_16_GOT:
|
||
case R_CRIS_32_GOT:
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
if (h->got.refcount > 0)
|
||
{
|
||
--h->got.refcount;
|
||
if (h->got.refcount == 0)
|
||
{
|
||
/* We don't need the .got entry any more. */
|
||
sgot->_raw_size -= 4;
|
||
srelgot->_raw_size -= sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
local_got_reloc:
|
||
if (local_got_refcounts != NULL)
|
||
{
|
||
if (local_got_refcounts[r_symndx] > 0)
|
||
{
|
||
--local_got_refcounts[r_symndx];
|
||
if (local_got_refcounts[r_symndx] == 0)
|
||
{
|
||
/* We don't need the .got entry any more. */
|
||
sgot->_raw_size -= 4;
|
||
if (info->shared)
|
||
srelgot->_raw_size -= sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_CRIS_16_GOTPLT:
|
||
case R_CRIS_32_GOTPLT:
|
||
/* For local symbols, treat these like GOT relocs. */
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
goto local_got_reloc;
|
||
|
||
case R_CRIS_32_PLT_GOTREL:
|
||
/* FIXME: We don't garbage-collect away the .got section. */
|
||
if (local_got_refcounts != NULL)
|
||
local_got_refcounts[-1]--;
|
||
/* Fall through. */
|
||
|
||
case R_CRIS_8_PCREL:
|
||
case R_CRIS_16_PCREL:
|
||
case R_CRIS_32_PCREL:
|
||
case R_CRIS_32_PLT_PCREL:
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
if (h->plt.refcount > 0)
|
||
--h->plt.refcount;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
|
||
entry but we found we will not create any. Called when we find we will
|
||
not have any PLT for this symbol, by for example
|
||
elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
|
||
or elf_cris_size_dynamic_sections if no dynamic sections will be
|
||
created (we're only linking static objects). */
|
||
|
||
static boolean
|
||
elf_cris_adjust_gotplt_to_got (h, p)
|
||
struct elf_cris_link_hash_entry *h;
|
||
PTR p;
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) p;
|
||
bfd *dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
/* If nobody wanted a GOTPLT with this symbol, we're done. */
|
||
if (h->gotplt_refcount <= 0)
|
||
return true;
|
||
|
||
if (h->root.got.refcount > 0)
|
||
{
|
||
/* There's a GOT entry for this symbol. Just adjust the refcount.
|
||
Probably not necessary at this stage, but keeping it accurate
|
||
helps avoiding surprises later. */
|
||
h->root.got.refcount += h->gotplt_refcount;
|
||
h->gotplt_refcount = -1;
|
||
}
|
||
else
|
||
{
|
||
/* No GOT entry for this symbol. We need to create one. */
|
||
asection *sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
asection *srelgot
|
||
= bfd_get_section_by_name (dynobj, ".rela.got");
|
||
|
||
/* Put an accurate refcount there. */
|
||
h->root.got.refcount = h->gotplt_refcount;
|
||
|
||
h->gotplt_refcount = -1;
|
||
|
||
/* We always have a .got section when there are dynamic
|
||
relocs. */
|
||
BFD_ASSERT (sgot != NULL /* Surely have .got section. */);
|
||
|
||
/* We might have had a PLT but with no GOT entry and
|
||
further no GOT reloc section at all needed before.
|
||
Add it. */
|
||
if (srelgot == NULL)
|
||
{
|
||
srelgot = bfd_make_section (dynobj, ".rela.got");
|
||
|
||
if (srelgot == NULL
|
||
|| !bfd_set_section_flags (dynobj, srelgot,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (dynobj, srelgot, 2))
|
||
return false;
|
||
}
|
||
|
||
/* Allocate space in the .got section. */
|
||
sgot->_raw_size += 4;
|
||
|
||
/* Allocate relocation space. */
|
||
srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Try to fold PLT entries with GOT entries. There are two cases when we
|
||
want to do this:
|
||
|
||
- When all PLT references are GOTPLT references, and there are GOT
|
||
references. We don't have to generate a PLT at all.
|
||
|
||
- When there are both (ordinary) PLT references and GOT references.
|
||
We want to make the PLT reference use the ordinary GOT entry rather
|
||
than a run-time dynamically resolved GOTPLT entry (since the GOT
|
||
entry will have to be resolved at startup anyway).
|
||
|
||
Though the latter case is handled when room for the PLT is allocated,
|
||
not here.
|
||
|
||
Note that this function is called before symbols are forced local by
|
||
version scripts. The differing cases are handled by
|
||
elf_cris_hide_symbol. */
|
||
|
||
static boolean
|
||
elf_cris_try_fold_plt_to_got (h, p)
|
||
struct elf_cris_link_hash_entry *h;
|
||
PTR p;
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) p;
|
||
|
||
/* If there are no GOT references for this symbol, we can't fold any
|
||
other reference so there's nothing to do. Likewise if there are no
|
||
PLT references; GOTPLT references included. */
|
||
if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
|
||
return true;
|
||
|
||
/* GOTPLT relocs are supposed to be included into the PLT refcount. */
|
||
BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
|
||
|
||
if (h->gotplt_refcount == h->root.plt.refcount)
|
||
{
|
||
/* The only PLT references are GOTPLT references, and there are GOT
|
||
references. Convert PLT to GOT references. */
|
||
if (! elf_cris_adjust_gotplt_to_got (h, info))
|
||
return false;
|
||
|
||
/* Clear the PLT references, so no PLT will be created. */
|
||
h->root.plt.offset = (bfd_vma) -1;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
|
||
to use a GOT entry (and create one) rather than requiring a GOTPLT
|
||
entry. */
|
||
|
||
static void
|
||
elf_cris_hide_symbol (info, h)
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
{
|
||
elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
|
||
|
||
_bfd_elf_link_hash_hide_symbol (info, h);
|
||
}
|
||
|
||
/* Adjust a symbol defined by a dynamic object and referenced by a
|
||
regular object. The current definition is in some section of the
|
||
dynamic object, but we're not including those sections. We have to
|
||
change the definition to something the rest of the link can
|
||
understand. */
|
||
|
||
static boolean
|
||
elf_cris_adjust_dynamic_symbol (info, h)
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
{
|
||
bfd *dynobj;
|
||
asection *s;
|
||
unsigned int power_of_two;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (dynobj != NULL
|
||
&& ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
|
||
|| h->weakdef != NULL
|
||
|| ((h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_REF_REGULAR) != 0
|
||
&& (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)));
|
||
|
||
/* If this is a function, put it in the procedure linkage table. We
|
||
will fill in the contents of the procedure linkage table later,
|
||
when we know the address of the .got section. */
|
||
if (h->type == STT_FUNC
|
||
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
||
{
|
||
if (! info->shared
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
|
||
/* We must always create the plt entry if it was referenced by a
|
||
PLT relocation. In this case we already recorded it as a
|
||
dynamic symbol. */
|
||
/* FIXME: m68k and i386 differ here, for unclear reasons. */
|
||
&& h->dynindx == -1)
|
||
{
|
||
/* This case can occur if we saw a PLT reloc in an input file,
|
||
but the symbol was never referred to by a dynamic object. In
|
||
such a case, we don't actually need to build a procedure
|
||
linkage table, and we can just do a PC reloc instead, or
|
||
change a .got.plt index to a .got index for GOTPLT relocs. */
|
||
BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
|
||
h->plt.offset = (bfd_vma) -1;
|
||
|
||
return
|
||
elf_cris_adjust_gotplt_to_got ((struct
|
||
elf_cris_link_hash_entry *) h,
|
||
info);
|
||
}
|
||
|
||
/* If there are only GOT references and GOTPLT references to this
|
||
PLT entry, get rid of the PLT. */
|
||
if (! elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry *)
|
||
h, info))
|
||
return false;
|
||
|
||
/* GC or folding may have rendered this entry unused. */
|
||
if (h->plt.refcount <= 0)
|
||
{
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
h->plt.offset = (bfd_vma) -1;
|
||
return true;
|
||
}
|
||
|
||
/* Make sure this symbol is output as a dynamic symbol. */
|
||
if (h->dynindx == -1)
|
||
{
|
||
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".plt");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
/* If this is the first .plt entry, make room for the special
|
||
first entry. */
|
||
if (s->_raw_size == 0)
|
||
s->_raw_size += PLT_ENTRY_SIZE;
|
||
|
||
/* If this symbol is not defined in a regular file, and we are
|
||
not generating a shared library, then set the symbol to this
|
||
location in the .plt. This is required to make function
|
||
pointers compare as equal between the normal executable and
|
||
the shared library. */
|
||
if (!info->shared
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = s->_raw_size;
|
||
}
|
||
|
||
/* If there's already a GOT entry, use that, not a .got.plt. A
|
||
GOT field still has a reference count when we get here; it's
|
||
not yet changed to an offset. */
|
||
if (h->got.refcount > 0)
|
||
{
|
||
h->got.refcount += h->plt.refcount;
|
||
|
||
/* Mark the PLT offset to use the GOT entry by setting the low
|
||
bit in the plt offset; it is always a multiple of
|
||
pointer-size. */
|
||
BFD_ASSERT ((s->_raw_size & 3) == 0);
|
||
|
||
/* Change the PLT refcount to an offset. */
|
||
h->plt.offset = s->_raw_size;
|
||
|
||
/* By not setting gotplt_offset (i.e. it remains at 0), we signal
|
||
that the got entry should be used instead. */
|
||
BFD_ASSERT (((struct elf_cris_link_hash_entry *)
|
||
h)->gotplt_offset == 0);
|
||
|
||
/* Make room for this entry. */
|
||
s->_raw_size += PLT_ENTRY_SIZE;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* No GOT reference for this symbol; prepare for an ordinary PLT. */
|
||
h->plt.offset = s->_raw_size;
|
||
|
||
/* Make room for this entry. */
|
||
s->_raw_size += PLT_ENTRY_SIZE;
|
||
|
||
/* We also need to make an entry in the .got.plt section, which
|
||
will be placed in the .got section by the linker script. */
|
||
((struct elf_cris_link_hash_entry *) h)->gotplt_offset
|
||
= elf_cris_hash_table (info)->next_gotplt_entry;
|
||
elf_cris_hash_table (info)->next_gotplt_entry += 4;
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".got.plt");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size += 4;
|
||
|
||
/* We also need to make an entry in the .rela.plt section. */
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".rela.plt");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size += sizeof (Elf32_External_Rela);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Reinitialize the plt offset now that it is not used as a reference
|
||
count any more. */
|
||
h->plt.offset = (bfd_vma) -1;
|
||
|
||
/* If this is a weak symbol, and there is a real definition, the
|
||
processor independent code will have arranged for us to see the
|
||
real definition first, and we can just use the same value. */
|
||
if (h->weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|
||
|| h->weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->weakdef->root.u.def.value;
|
||
return true;
|
||
}
|
||
|
||
/* This is a reference to a symbol defined by a dynamic object which
|
||
is not a function. */
|
||
|
||
/* If we are creating a shared library, we must presume that the
|
||
only references to the symbol are via the global offset table.
|
||
For such cases we need not do anything here; the relocations will
|
||
be handled correctly by relocate_section. */
|
||
if (info->shared)
|
||
return true;
|
||
|
||
/* If there are no references to this symbol that do not use the
|
||
GOT, we don't need to generate a copy reloc. */
|
||
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
|
||
return true;
|
||
|
||
/* We must allocate the symbol in our .dynbss section, which will
|
||
become part of the .bss section of the executable. There will be
|
||
an entry for this symbol in the .dynsym section. The dynamic
|
||
object will contain position independent code, so all references
|
||
from the dynamic object to this symbol will go through the global
|
||
offset table. The dynamic linker will use the .dynsym entry to
|
||
determine the address it must put in the global offset table, so
|
||
both the dynamic object and the regular object will refer to the
|
||
same memory location for the variable. */
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
/* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
|
||
copy the initial value out of the dynamic object and into the
|
||
runtime process image. We need to remember the offset into the
|
||
.rela.bss section we are going to use. */
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
asection *srel;
|
||
|
||
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
|
||
BFD_ASSERT (srel != NULL);
|
||
srel->_raw_size += sizeof (Elf32_External_Rela);
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
||
}
|
||
|
||
/* Historic precedent: m68k and i386 allow max 8-byte alignment for the
|
||
thing to copy; so do we. */
|
||
|
||
/* We need to figure out the alignment required for this symbol. I
|
||
have no idea how ELF linkers handle this. */
|
||
power_of_two = bfd_log2 (h->size);
|
||
if (power_of_two > 3)
|
||
power_of_two = 3;
|
||
|
||
/* Apply the required alignment. */
|
||
s->_raw_size = BFD_ALIGN (s->_raw_size,
|
||
(bfd_size_type) (1 << power_of_two));
|
||
if (power_of_two > bfd_get_section_alignment (dynobj, s))
|
||
{
|
||
if (!bfd_set_section_alignment (dynobj, s, power_of_two))
|
||
return false;
|
||
}
|
||
|
||
/* Define the symbol as being at this point in the section. */
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = s->_raw_size;
|
||
|
||
/* Increment the section size to make room for the symbol. */
|
||
s->_raw_size += h->size;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase. */
|
||
|
||
static boolean
|
||
cris_elf_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
bfd *dynobj;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sgot;
|
||
asection *srelgot;
|
||
asection *sreloc;
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
sgot = NULL;
|
||
srelgot = NULL;
|
||
sreloc = NULL;
|
||
|
||
if (!elf_bad_symtab (abfd))
|
||
sym_hashes_end -= symtab_hdr->sh_info;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
enum elf_cris_reloc_type r_type;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
/* Some relocs require linker-created sections; we need to hang them
|
||
on the first input bfd we found that contained dynamic relocs. */
|
||
switch (r_type)
|
||
{
|
||
case R_CRIS_16_GOT:
|
||
case R_CRIS_32_GOT:
|
||
case R_CRIS_32_GOTREL:
|
||
case R_CRIS_32_PLT_GOTREL:
|
||
case R_CRIS_32_PLT_PCREL:
|
||
case R_CRIS_16_GOTPLT:
|
||
case R_CRIS_32_GOTPLT:
|
||
if (dynobj == NULL)
|
||
{
|
||
elf_hash_table (info)->dynobj = dynobj = abfd;
|
||
|
||
/* Create the .got section, so we can assume it's always
|
||
present whenever there's a dynobj. */
|
||
if (!_bfd_elf_create_got_section (dynobj, info))
|
||
return false;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Some relocs require a global offset table (but perhaps not a
|
||
specific GOT entry). */
|
||
switch (r_type)
|
||
{
|
||
case R_CRIS_16_GOT:
|
||
case R_CRIS_32_GOT:
|
||
case R_CRIS_32_GOTREL:
|
||
case R_CRIS_32_PLT_GOTREL:
|
||
if (sgot == NULL)
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
|
||
if (local_got_refcounts == NULL)
|
||
{
|
||
size_t size;
|
||
|
||
/* We use index local_got_refcounts[-1] to count all
|
||
GOT-relative relocations that do not have explicit
|
||
GOT entries. */
|
||
size = (symtab_hdr->sh_info + 1) * sizeof (bfd_signed_vma);
|
||
local_got_refcounts = ((bfd_signed_vma *)
|
||
bfd_alloc (abfd, size));
|
||
if (local_got_refcounts == NULL)
|
||
return false;
|
||
memset (local_got_refcounts, -1, size);
|
||
|
||
local_got_refcounts++;
|
||
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_CRIS_16_GOTPLT:
|
||
case R_CRIS_32_GOTPLT:
|
||
/* Mark that we need a GOT entry if the PLT entry (and its GOT
|
||
entry) is eliminated. We can only do this for a non-local
|
||
symbol. */
|
||
if (h != NULL)
|
||
{
|
||
((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
|
||
goto handle_gotplt_reloc;
|
||
}
|
||
/* If h is NULL then this is a local symbol, and we must make a
|
||
GOT entry for it, so handle it like a GOT reloc. */
|
||
/* Fall through. */
|
||
|
||
case R_CRIS_16_GOT:
|
||
case R_CRIS_32_GOT:
|
||
/* This symbol requires a global offset table entry. */
|
||
|
||
if (srelgot == NULL
|
||
&& (h != NULL || info->shared))
|
||
{
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
if (srelgot == NULL)
|
||
{
|
||
srelgot = bfd_make_section (dynobj, ".rela.got");
|
||
if (srelgot == NULL
|
||
|| !bfd_set_section_flags (dynobj, srelgot,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (dynobj, srelgot, 2))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
if (h->got.refcount == -1)
|
||
{
|
||
h->got.refcount = 1;
|
||
|
||
/* Make sure this symbol is output as a dynamic symbol. */
|
||
if (h->dynindx == -1)
|
||
{
|
||
if (!bfd_elf32_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
|
||
/* Allocate space in the .got section. */
|
||
sgot->_raw_size += 4;
|
||
/* Allocate relocation space. */
|
||
srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
h->got.refcount++;
|
||
}
|
||
else
|
||
{
|
||
/* This is a global offset table entry for a local symbol. */
|
||
if (local_got_refcounts[r_symndx] == -1)
|
||
{
|
||
local_got_refcounts[r_symndx] = 1;
|
||
|
||
sgot->_raw_size += 4;
|
||
if (info->shared)
|
||
{
|
||
/* If we are generating a shared object, we need to
|
||
output a R_CRIS_RELATIVE reloc so that the dynamic
|
||
linker can adjust this GOT entry. */
|
||
srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
else
|
||
local_got_refcounts[r_symndx]++;
|
||
}
|
||
break;
|
||
|
||
case R_CRIS_32_GOTREL:
|
||
/* This reference requires a global offset table.
|
||
FIXME: The actual refcount isn't used currently; the .got
|
||
section can't be removed if there were any references in the
|
||
input. */
|
||
local_got_refcounts[-1]++;
|
||
break;
|
||
|
||
handle_gotplt_reloc:
|
||
|
||
case R_CRIS_32_PLT_GOTREL:
|
||
/* This reference requires a global offset table. */
|
||
local_got_refcounts[-1]++;
|
||
/* Fall through. */
|
||
|
||
case R_CRIS_32_PLT_PCREL:
|
||
/* This symbol requires a procedure linkage table entry. We
|
||
actually build the entry in adjust_dynamic_symbol,
|
||
because this might be a case of linking PIC code which is
|
||
never referenced by a dynamic object, in which case we
|
||
don't need to generate a procedure linkage table entry
|
||
after all. */
|
||
|
||
/* If this is a local symbol, we resolve it directly without
|
||
creating a procedure linkage table entry. */
|
||
if (h == NULL)
|
||
continue;
|
||
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
if (h->plt.refcount == -1)
|
||
h->plt.refcount = 1;
|
||
else
|
||
h->plt.refcount++;
|
||
break;
|
||
|
||
case R_CRIS_8:
|
||
case R_CRIS_16:
|
||
case R_CRIS_32:
|
||
/* Let's help debug shared library creation. Any of these
|
||
relocs can be used in shared libs, but pages containing them
|
||
cannot be shared. Don't warn for sections we don't care
|
||
about, such as debug sections or non-constant sections. We
|
||
can't help tables of (global) function pointers, for example,
|
||
though they must be emitted in a data section to avoid having
|
||
impure text sections. */
|
||
if (info->shared
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& (sec->flags & SEC_READONLY) != 0)
|
||
{
|
||
/* FIXME: How do we make this optionally a warning only? */
|
||
if (abfd->my_archive)
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s), section %s:\n relocation %s should not be used in a shared object; recompile with -fPIC"),
|
||
bfd_get_filename (bfd_my_archive (abfd)),
|
||
bfd_get_filename (abfd),
|
||
sec->name,
|
||
cris_elf_howto_table[r_type].name);
|
||
else
|
||
(*_bfd_error_handler)
|
||
(_("%s, section %s:\n relocation %s should not be used in a shared object; recompile with -fPIC"),
|
||
bfd_get_filename (abfd),
|
||
sec->name,
|
||
cris_elf_howto_table[r_type].name);
|
||
}
|
||
/* Fall through. */
|
||
|
||
case R_CRIS_8_PCREL:
|
||
case R_CRIS_16_PCREL:
|
||
case R_CRIS_32_PCREL:
|
||
if (h != NULL)
|
||
{
|
||
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
||
|
||
/* Make sure a plt entry is created for this symbol if it
|
||
turns out to be a function defined by a dynamic object. */
|
||
if (h->plt.refcount == -1)
|
||
h->plt.refcount = 1;
|
||
else
|
||
h->plt.refcount++;
|
||
}
|
||
|
||
/* If we are creating a shared library and this is not a local
|
||
symbol, we need to copy the reloc into the shared library.
|
||
However when linking with -Bsymbolic and this is a global
|
||
symbol which is defined in an object we are including in the
|
||
link (i.e., DEF_REGULAR is set), then we can resolve the
|
||
reloc directly. At this point we have not seen all the input
|
||
files, so it is possible that DEF_REGULAR is not set now but
|
||
will be set later (it is never cleared). In case of a weak
|
||
definition, DEF_REGULAR may be cleared later by a strong
|
||
definition in a shared library. We account for that
|
||
possibility below by storing information in the relocs_copied
|
||
field of the hash table entry. A similar situation occurs
|
||
when creating shared libraries and symbol visibility changes
|
||
render the symbol local. */
|
||
|
||
/* No need to do anything if we're not creating a shared object. */
|
||
if (! info->shared)
|
||
break;
|
||
|
||
/* We don't need to handle relocs into sections not going into
|
||
the "real" output. */
|
||
if ((sec->flags & SEC_ALLOC) == 0)
|
||
break;
|
||
|
||
/* We can only eliminate PC-relative relocs. */
|
||
if (r_type == R_CRIS_8_PCREL
|
||
|| r_type == R_CRIS_16_PCREL
|
||
|| r_type == R_CRIS_32_PCREL)
|
||
{
|
||
/* If the symbol is local, then we can eliminate the reloc. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
/* If this is with -Bsymbolic and the symbol isn't weak, and
|
||
is defined by an ordinary object (the ones we include in
|
||
this shared library) then we can also eliminate the
|
||
reloc. See comment above for more eliminable cases which
|
||
we can't identify at this time. */
|
||
if (info->symbolic
|
||
&& h->root.type != bfd_link_hash_defweak
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
|
||
break;
|
||
}
|
||
|
||
/* We create a reloc section in dynobj and make room for this
|
||
reloc. */
|
||
if (sreloc == NULL)
|
||
{
|
||
const char *name;
|
||
|
||
name = (bfd_elf_string_from_elf_section
|
||
(abfd,
|
||
elf_elfheader (abfd)->e_shstrndx,
|
||
elf_section_data (sec)->rel_hdr.sh_name));
|
||
if (name == NULL)
|
||
return false;
|
||
|
||
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
|
||
&& strcmp (bfd_get_section_name (abfd, sec),
|
||
name + 5) == 0);
|
||
|
||
sreloc = bfd_get_section_by_name (dynobj, name);
|
||
if (sreloc == NULL)
|
||
{
|
||
sreloc = bfd_make_section (dynobj, name);
|
||
if (sreloc == NULL
|
||
|| !bfd_set_section_flags (dynobj, sreloc,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (dynobj, sreloc, 2))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
sreloc->_raw_size += sizeof (Elf32_External_Rela);
|
||
|
||
/* If we are linking with -Bsymbolic, we count the number of PC
|
||
relative relocations we have entered for this symbol, so that
|
||
we can discard them again if the symbol is later defined by a
|
||
regular object. We know that h is really a pointer to an
|
||
elf_cris_link_hash_entry. */
|
||
if ((r_type == R_CRIS_8_PCREL
|
||
|| r_type == R_CRIS_16_PCREL
|
||
|| r_type == R_CRIS_32_PCREL)
|
||
&& info->symbolic)
|
||
{
|
||
struct elf_cris_link_hash_entry *eh;
|
||
struct elf_cris_pcrel_relocs_copied *p;
|
||
|
||
eh = (struct elf_cris_link_hash_entry *) h;
|
||
|
||
for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
|
||
if (p->section == sreloc)
|
||
break;
|
||
|
||
if (p == NULL)
|
||
{
|
||
p = ((struct elf_cris_pcrel_relocs_copied *)
|
||
bfd_alloc (dynobj, sizeof *p));
|
||
if (p == NULL)
|
||
return false;
|
||
p->next = eh->pcrel_relocs_copied;
|
||
eh->pcrel_relocs_copied = p;
|
||
p->section = sreloc;
|
||
p->count = 0;
|
||
}
|
||
|
||
++p->count;
|
||
}
|
||
break;
|
||
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_CRIS_GNU_VTINHERIT:
|
||
if (!_bfd_elf32_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_CRIS_GNU_VTENTRY:
|
||
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return false;
|
||
break;
|
||
|
||
default:
|
||
/* Other relocs do not appear here. */
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
static boolean
|
||
elf_cris_size_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *s;
|
||
boolean plt;
|
||
boolean relocs;
|
||
boolean reltext;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (!info->shared)
|
||
{
|
||
s = bfd_get_section_by_name (dynobj, ".interp");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
|
||
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Adjust all expected GOTPLT uses to use a GOT entry instead. */
|
||
elf_cris_link_hash_traverse (elf_cris_hash_table (info),
|
||
elf_cris_adjust_gotplt_to_got,
|
||
(PTR) info);
|
||
|
||
/* We may have created entries in the .rela.got section.
|
||
However, if we are not creating the dynamic sections, we will
|
||
not actually use these entries. Reset the size of .rela.got,
|
||
which will cause it to get stripped from the output file
|
||
below. */
|
||
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
if (s != NULL)
|
||
s->_raw_size = 0;
|
||
}
|
||
|
||
/* If this is a -Bsymbolic shared link, then we need to discard all PC
|
||
relative relocs against symbols defined in a regular object. We
|
||
allocated space for them in the check_relocs routine, but we will not
|
||
fill them in in the relocate_section routine. We also discard space
|
||
for relocs that have become for local symbols due to symbol
|
||
visibility changes. For programs, we discard space for relocs for
|
||
symbols not referenced by any dynamic object. */
|
||
if (info->shared)
|
||
elf_cris_link_hash_traverse (elf_cris_hash_table (info),
|
||
elf_cris_discard_excess_dso_dynamics,
|
||
(PTR) info);
|
||
else
|
||
elf_cris_link_hash_traverse (elf_cris_hash_table (info),
|
||
elf_cris_discard_excess_program_dynamics,
|
||
(PTR) info);
|
||
|
||
/* The check_relocs and adjust_dynamic_symbol entry points have
|
||
determined the sizes of the various dynamic sections. Allocate
|
||
memory for them. */
|
||
plt = false;
|
||
relocs = false;
|
||
reltext = false;
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
const char *name;
|
||
boolean strip;
|
||
|
||
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
/* It's OK to base decisions on the section name, because none
|
||
of the dynobj section names depend upon the input files. */
|
||
name = bfd_get_section_name (dynobj, s);
|
||
|
||
strip = false;
|
||
|
||
if (strcmp (name, ".plt") == 0)
|
||
{
|
||
if (s->_raw_size == 0)
|
||
{
|
||
/* Strip this section if we don't need it; see the
|
||
comment below. */
|
||
strip = true;
|
||
}
|
||
else
|
||
{
|
||
/* Remember whether there is a PLT. */
|
||
plt = true;
|
||
}
|
||
}
|
||
else if (strncmp (name, ".rela", 5) == 0)
|
||
{
|
||
if (s->_raw_size == 0)
|
||
{
|
||
/* If we don't need this section, strip it from the
|
||
output file. This is mostly to handle .rela.bss and
|
||
.rela.plt. We must create both sections in
|
||
create_dynamic_sections, because they must be created
|
||
before the linker maps input sections to output
|
||
sections. The linker does that before
|
||
adjust_dynamic_symbol is called, and it is that
|
||
function which decides whether anything needs to go
|
||
into these sections. */
|
||
strip = true;
|
||
}
|
||
else
|
||
{
|
||
asection *target;
|
||
|
||
/* Remember whether there are any reloc sections other
|
||
than .rela.plt. */
|
||
if (strcmp (name, ".rela.plt") != 0)
|
||
{
|
||
const char *outname;
|
||
|
||
relocs = true;
|
||
|
||
/* If this relocation section applies to a read only
|
||
section, then we probably need a DT_TEXTREL entry.
|
||
The entries in the .rela.plt section are actually
|
||
associated with .got.plt, which we created ourselves
|
||
and so know is not readonly. */
|
||
outname = bfd_get_section_name (output_bfd,
|
||
s->output_section);
|
||
target
|
||
= bfd_get_section_by_name (output_bfd,
|
||
outname + strlen (".rela"));
|
||
|
||
/* We have to test the .text section by name, becase for
|
||
some reason it does not have SEC_READONLY set at this
|
||
time. That flag is actually set in ldmain.c:main
|
||
specifically for ".text" at a time long after this
|
||
function is called. FIXME: This might be due to a
|
||
general bug. FIXME: Have testcase for this. */
|
||
if (target != NULL
|
||
&& (target->flags & SEC_ALLOC) != 0
|
||
&& ((target->flags & SEC_READONLY) != 0
|
||
|| strcmp (outname + strlen (".rela"),
|
||
".text") == 0))
|
||
reltext = true;
|
||
}
|
||
|
||
/* We use the reloc_count field as a counter if we need
|
||
to copy relocs into the output file. */
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
else if (strncmp (name, ".got", 4) != 0)
|
||
{
|
||
/* It's not one of our sections, so don't allocate space. */
|
||
continue;
|
||
}
|
||
|
||
if (strip)
|
||
{
|
||
_bfd_strip_section_from_output (info, s);
|
||
continue;
|
||
}
|
||
|
||
/* Allocate memory for the section contents. We use bfd_zalloc here
|
||
in case unused entries are not reclaimed before the section's
|
||
contents are written out. This should not happen, but this way
|
||
if it does, we will not write out garbage. For reloc sections,
|
||
this will make entries have the type R_CRIS_NONE. */
|
||
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
|
||
if (s->contents == NULL && s->_raw_size != 0)
|
||
return false;
|
||
}
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in elf_cris_finish_dynamic_sections, but we
|
||
must add the entries now so that we get the correct size for
|
||
the .dynamic section. The DT_DEBUG entry is filled in by the
|
||
dynamic linker and used by the debugger. */
|
||
if (!info->shared)
|
||
{
|
||
if (!bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
|
||
return false;
|
||
}
|
||
|
||
if (plt)
|
||
{
|
||
if (!bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
|
||
|| !bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|
||
|| !bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
|
||
|| !bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
|
||
return false;
|
||
}
|
||
|
||
if (relocs)
|
||
{
|
||
if (!bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
|
||
|| !bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
|
||
|| !bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
|
||
sizeof (Elf32_External_Rela)))
|
||
return false;
|
||
}
|
||
|
||
if (reltext)
|
||
{
|
||
if (!bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
|
||
return false;
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This function is called via elf_cris_link_hash_traverse if we are
|
||
creating a shared object. In the -Bsymbolic case, it discards the
|
||
space allocated to copy PC relative relocs against symbols which
|
||
are defined in regular objects. For the normal non-symbolic case,
|
||
we also discard space for relocs that have become local due to
|
||
symbol visibility changes. We allocated space for them in the
|
||
check_relocs routine, but we won't fill them in in the
|
||
relocate_section routine. */
|
||
|
||
static boolean
|
||
elf_cris_discard_excess_dso_dynamics (h, inf)
|
||
struct elf_cris_link_hash_entry *h;
|
||
PTR inf;
|
||
{
|
||
struct elf_cris_pcrel_relocs_copied *s;
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
|
||
/* If a symbol has been forced local or we have found a regular
|
||
definition for the symbolic link case, then we won't be needing
|
||
any relocs. */
|
||
if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
||
&& ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|
||
|| info->symbolic))
|
||
{
|
||
for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
|
||
s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This function is called via elf_cris_link_hash_traverse if we are *not*
|
||
creating a shared object. We discard space for relocs for symbols put
|
||
in the .got, but which we found we do not have to resolve at run-time. */
|
||
|
||
static boolean
|
||
elf_cris_discard_excess_program_dynamics (h, inf)
|
||
struct elf_cris_link_hash_entry *h;
|
||
PTR inf;
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
|
||
/* If we're not creating a shared library and have a symbol which is
|
||
referred to by .got references, but the symbol is defined locally,
|
||
(or rather, not referred to by a DSO and not defined by a DSO) then
|
||
lose the reloc for the .got (don't allocate room for it). */
|
||
if ((h->root.elf_link_hash_flags
|
||
& (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_DEF_DYNAMIC)) == 0)
|
||
{
|
||
if (h->root.got.refcount > 0
|
||
/* The size of this section is only valid and in sync with the
|
||
various reference counts if we do dynamic; don't decrement it
|
||
otherwise. */
|
||
&& elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
bfd *dynobj = elf_hash_table (info)->dynobj;
|
||
asection *srelgot;
|
||
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
|
||
BFD_ASSERT (srelgot != NULL);
|
||
|
||
srelgot->_raw_size -= sizeof (Elf32_External_Rela);
|
||
}
|
||
|
||
/* If the locally-defined symbol isn't used by a DSO, then we don't
|
||
have to export it as a dynamic symbol. This was already done for
|
||
functions; doing this for all symbols would presumably not
|
||
introduce new problems. */
|
||
h->root.dynindx = -1;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Reject a file depending on presence and expectation of prefixed
|
||
underscores on symbols. */
|
||
|
||
static boolean
|
||
cris_elf_object_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
|
||
return (bfd_get_symbol_leading_char (abfd) == '_');
|
||
else
|
||
return (bfd_get_symbol_leading_char (abfd) == 0);
|
||
}
|
||
|
||
/* Mark presence or absence of leading underscore. */
|
||
|
||
static void
|
||
cris_elf_final_write_processing (abfd, linker)
|
||
bfd *abfd;
|
||
boolean linker ATTRIBUTE_UNUSED;
|
||
{
|
||
if (bfd_get_symbol_leading_char (abfd) == '_')
|
||
elf_elfheader (abfd)->e_flags |= EF_CRIS_UNDERSCORE;
|
||
else
|
||
elf_elfheader (abfd)->e_flags &= ~EF_CRIS_UNDERSCORE;
|
||
}
|
||
|
||
/* Display the flags field. */
|
||
|
||
static boolean
|
||
cris_elf_print_private_bfd_data (abfd, ptr)
|
||
bfd *abfd;
|
||
PTR ptr;
|
||
{
|
||
FILE *file = (FILE *) ptr;
|
||
|
||
BFD_ASSERT (abfd != NULL && ptr != NULL)
|
||
|
||
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
||
|
||
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
||
|
||
if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
|
||
fprintf (file, _(" [symbols have a _ prefix]"));
|
||
|
||
fputc ('\n', file);
|
||
return true;
|
||
}
|
||
|
||
/* Don't mix files with and without a leading underscore. */
|
||
|
||
static boolean
|
||
cris_elf_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
flagword old_flags, new_flags;
|
||
|
||
if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
|
||
return false;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return true;
|
||
|
||
if (! elf_flags_init (obfd))
|
||
{
|
||
/* This happens when ld starts out with a 'blank' output file. */
|
||
elf_flags_init (obfd) = true;
|
||
|
||
/* Set flags according to current bfd_target. */
|
||
cris_elf_final_write_processing (obfd, false);
|
||
}
|
||
|
||
old_flags = elf_elfheader (obfd)->e_flags;
|
||
new_flags = elf_elfheader (ibfd)->e_flags;
|
||
|
||
/* Is this good or bad? We'll follow with other excluding flags. */
|
||
if ((old_flags & EF_CRIS_UNDERSCORE) != (new_flags & EF_CRIS_UNDERSCORE))
|
||
{
|
||
(*_bfd_error_handler)
|
||
((new_flags & EF_CRIS_UNDERSCORE)
|
||
? _("%s: uses _-prefixed symbols, but writing file with non-prefixed symbols")
|
||
: _("%s: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
|
||
bfd_get_filename (ibfd));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
#define ELF_ARCH bfd_arch_cris
|
||
#define ELF_MACHINE_CODE EM_CRIS
|
||
#define ELF_MAXPAGESIZE 0x2000
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
|
||
#define TARGET_LITTLE_NAME "elf32-cris"
|
||
#define elf_symbol_leading_char 0
|
||
|
||
#define elf_info_to_howto_rel NULL
|
||
#define elf_info_to_howto cris_info_to_howto_rela
|
||
#define elf_backend_relocate_section cris_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
|
||
#define elf_backend_check_relocs cris_elf_check_relocs
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
|
||
#define elf_backend_object_p cris_elf_object_p
|
||
#define elf_backend_final_write_processing \
|
||
cris_elf_final_write_processing
|
||
#define bfd_elf32_bfd_print_private_bfd_data \
|
||
cris_elf_print_private_bfd_data
|
||
#define bfd_elf32_bfd_merge_private_bfd_data \
|
||
cris_elf_merge_private_bfd_data
|
||
|
||
#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
|
||
|
||
#define bfd_elf32_bfd_link_hash_table_create \
|
||
elf_cris_link_hash_table_create
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
elf_cris_adjust_dynamic_symbol
|
||
#define elf_backend_size_dynamic_sections \
|
||
elf_cris_size_dynamic_sections
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
elf_cris_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_sections \
|
||
elf_cris_finish_dynamic_sections
|
||
#define elf_backend_create_dynamic_sections \
|
||
_bfd_elf_create_dynamic_sections
|
||
#define bfd_elf32_bfd_final_link \
|
||
_bfd_elf32_gc_common_final_link
|
||
#define elf_backend_hide_symbol elf_cris_hide_symbol
|
||
|
||
#define elf_backend_want_got_plt 1
|
||
#define elf_backend_plt_readonly 1
|
||
#define elf_backend_want_plt_sym 0
|
||
#define elf_backend_got_header_size 12
|
||
#define elf_backend_plt_header_size PLT_ENTRY_SIZE
|
||
|
||
/* Later, we my want to optimize RELA entries into REL entries for dynamic
|
||
linking and libraries (if it's a win of any significance). Until then,
|
||
take the easy route. */
|
||
#define elf_backend_may_use_rel_p 0
|
||
#define elf_backend_may_use_rela_p 1
|
||
|
||
#include "elf32-target.h"
|
||
|
||
#define INCLUDED_TARGET_FILE
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef elf_symbol_leading_char
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
|
||
#define TARGET_LITTLE_NAME "elf32-us-cris"
|
||
#define elf_symbol_leading_char '_'
|
||
|
||
#include "elf32-target.h"
|