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59c2e50f29
2004-03-20 H.J. Lu <hongjiu.lu@intel.com> * elf-bfd.h (RELOC_FOR_GLOBAL_SYMBOL): Report error if unresolved symbols in objects aren't allowed. * elf-hppa.h (elf_hppa_relocate_section): Properly handle unresolved symbols. (elf_hppa_remark_useless_dynamic_symbols): Likewise. (elf_hppa_unmark_useless_dynamic_symbols): * elf32-frv.c (elf32_frv_relocate_section): Likewise. * elf32-hppa.c (elf32_hppa_size_stubs): Likewise. (elf32_hppa_relocate_section): Likewise. * elf32-i370.c (i370_elf_relocate_section): Likewise. * elf32-m32r.c (m32r_elf_relocate_section): Likewise. * elf32-sh.c (sh_elf_relocate_section): Likewise. * elf64-sh64.c (sh_elf64_relocate_section): Likewise. * elfxx-mips.c (mips_elf_calculate_relocation): Likewise. * elf-m10200.c (mn10200_elf_relocate_section): Use RELOC_FOR_GLOBAL_SYMBOL. * elf32-avr.c (elf32_avr_relocate_section): Likewise. * elf32-d10v.c (elf32_d10v_relocate_section): Likewise. * elf32-fr30.c (fr30_elf_relocate_section): Likewise. * elf32-h8300.c (elf32_h8_relocate_section): Likewise. * elf32-i860.c (elf32_i860_relocate_section): Likewise. * elf32-m68hc1x.c (m68hc11_get_relocation_value): Likewise. * elf32-mcore.c (mcore_elf_relocate_section): Likewise. * elf32-msp430.c (elf32_msp430_relocate_section): Likewise. * elf32-openrisc.c (openrisc_elf_relocate_section): Likewise. * elf32-v850.c (v850_elf_relocate_section): Likewise. * elf32-xstormy16.c (xstormy16_elf_relocate_section): Likewise. * elf64-mmix.c (mmix_elf_relocate_section): Likewise. include/ 2004-03-20 H.J. Lu <hongjiu.lu@intel.com> * bfdlink.h (bfd_link_info): Correct comments for the unresolved_syms_in_objects field. ld/ 2004-03-20 H.J. Lu <hongjiu.lu@intel.com> * lexsup.c (parse_args): Don't set unresolved_syms_in_objects or unresolved_syms_in_shared_libs for -Bdynamic and -Bstatic.
608 lines
18 KiB
C
608 lines
18 KiB
C
/* D10V-specific support for 32-bit ELF
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Copyright 1996, 1998, 1999, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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Contributed by Martin Hunt (hunt@cygnus.com).
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#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/d10v.h"
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void d10v_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static asection * elf32_d10v_gc_mark_hook
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PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *));
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static bfd_boolean elf32_d10v_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 bfd_boolean elf32_d10v_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static bfd_vma extract_rel_addend
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PARAMS ((bfd *, bfd_byte *, reloc_howto_type *));
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static void insert_rel_addend
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PARAMS ((bfd *, bfd_byte *, reloc_howto_type *, bfd_vma));
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static bfd_boolean elf32_d10v_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
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bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *,
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asection **));
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/* Use REL instead of RELA to save space. */
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#define USE_REL 1
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static reloc_howto_type elf_d10v_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_D10V_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_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_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 PC Relative 10-bit relocation, shifted by 2 */
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/* right container */
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HOWTO (R_D10V_10_PCREL_R, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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7, /* 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_D10V_10_PCREL_R", /* name */
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FALSE, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* An PC Relative 10-bit relocation, shifted by 2 */
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/* left container */
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HOWTO (R_D10V_10_PCREL_L, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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7, /* bitsize */
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TRUE, /* pc_relative */
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15, /* 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_D10V_10_PCREL_L", /* name */
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FALSE, /* partial_inplace */
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0x07f8000, /* src_mask */
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0x07f8000, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 16 bit absolute relocation */
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HOWTO (R_D10V_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_16", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* An 18 bit absolute relocation, right shifted 2 */
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HOWTO (R_D10V_18, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_18", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A relative 18 bit relocation, right shifted by 2 */
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HOWTO (R_D10V_18_PCREL, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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15, /* 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_D10V_18_PCREL", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* A 32 bit absolute relocation */
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HOWTO (R_D10V_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_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_D10V_32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_D10V_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_D10V_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_D10V_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_D10V_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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};
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/* Map BFD reloc types to D10V ELF reloc types. */
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struct d10v_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static const struct d10v_reloc_map d10v_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_D10V_NONE, },
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{ BFD_RELOC_D10V_10_PCREL_R, R_D10V_10_PCREL_R },
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{ BFD_RELOC_D10V_10_PCREL_L, R_D10V_10_PCREL_L },
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{ BFD_RELOC_16, R_D10V_16 },
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{ BFD_RELOC_D10V_18, R_D10V_18 },
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{ BFD_RELOC_D10V_18_PCREL, R_D10V_18_PCREL },
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{ BFD_RELOC_32, R_D10V_32 },
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{ BFD_RELOC_VTABLE_INHERIT, R_D10V_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_ENTRY, R_D10V_GNU_VTENTRY },
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};
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static reloc_howto_type *
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bfd_elf32_bfd_reloc_type_lookup (abfd, code)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd_reloc_code_real_type code;
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{
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unsigned int i;
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for (i = 0;
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i < sizeof (d10v_reloc_map) / sizeof (struct d10v_reloc_map);
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i++)
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{
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if (d10v_reloc_map[i].bfd_reloc_val == code)
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return &elf_d10v_howto_table[d10v_reloc_map[i].elf_reloc_val];
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}
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return NULL;
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}
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/* Set the howto pointer for an D10V ELF reloc. */
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static void
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d10v_info_to_howto_rel (abfd, cache_ptr, dst)
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bfd *abfd ATTRIBUTE_UNUSED;
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arelent *cache_ptr;
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Elf_Internal_Rela *dst;
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{
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unsigned int r_type;
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r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) R_D10V_max);
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cache_ptr->howto = &elf_d10v_howto_table[r_type];
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}
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static asection *
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elf32_d10v_gc_mark_hook (sec, info, rel, h, sym)
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asection *sec;
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struct bfd_link_info *info ATTRIBUTE_UNUSED;
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Elf_Internal_Rela *rel;
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struct elf_link_hash_entry *h;
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Elf_Internal_Sym *sym;
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{
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if (h != NULL)
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{
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switch (ELF32_R_TYPE (rel->r_info))
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{
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case R_D10V_GNU_VTINHERIT:
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case R_D10V_GNU_VTENTRY:
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break;
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default:
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switch (h->root.type)
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{
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case bfd_link_hash_defined:
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case bfd_link_hash_defweak:
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return h->root.u.def.section;
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case bfd_link_hash_common:
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return h->root.u.c.p->section;
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default:
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break;
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}
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}
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}
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else
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return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
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return NULL;
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}
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static bfd_boolean
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elf32_d10v_gc_sweep_hook (abfd, info, sec, relocs)
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bfd *abfd ATTRIBUTE_UNUSED;
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struct bfd_link_info *info ATTRIBUTE_UNUSED;
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asection *sec ATTRIBUTE_UNUSED;
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const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
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{
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/* we don't use got and plt entries for d10v */
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return TRUE;
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}
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/* Look through the relocs for a section during the first phase.
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Since we don't do .gots or .plts, we just need to consider the
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virtual table relocs for gc. */
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static bfd_boolean
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elf32_d10v_check_relocs (abfd, info, sec, relocs)
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bfd *abfd;
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struct bfd_link_info *info;
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asection *sec;
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const Elf_Internal_Rela *relocs;
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
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const Elf_Internal_Rela *rel;
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const Elf_Internal_Rela *rel_end;
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if (info->relocatable)
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return TRUE;
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symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (abfd);
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sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
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if (!elf_bad_symtab (abfd))
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sym_hashes_end -= symtab_hdr->sh_info;
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rel_end = relocs + sec->reloc_count;
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for (rel = relocs; rel < rel_end; rel++)
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{
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struct elf_link_hash_entry *h;
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unsigned long r_symndx;
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r_symndx = ELF32_R_SYM (rel->r_info);
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if (r_symndx < symtab_hdr->sh_info)
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h = NULL;
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else
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h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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switch (ELF32_R_TYPE (rel->r_info))
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{
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/* This relocation describes the C++ object vtable hierarchy.
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Reconstruct it for later use during GC. */
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case R_D10V_GNU_VTINHERIT:
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if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
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return FALSE;
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break;
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/* This relocation describes which C++ vtable entries are actually
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used. Record for later use during GC. */
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case R_D10V_GNU_VTENTRY:
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if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
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return FALSE;
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break;
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}
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}
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return TRUE;
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}
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static bfd_vma
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extract_rel_addend (abfd, where, howto)
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bfd *abfd;
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bfd_byte *where;
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reloc_howto_type *howto;
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{
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bfd_vma insn, val;
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switch (howto->size)
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{
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case 0:
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insn = bfd_get_8 (abfd, where);
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break;
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case 1:
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insn = bfd_get_16 (abfd, where);
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break;
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case 2:
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insn = bfd_get_32 (abfd, where);
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break;
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default:
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abort ();
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}
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val = (insn & howto->dst_mask) >> howto->bitpos << howto->rightshift;
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/* We should really be testing for signed addends here, but we don't
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have that info directly in the howto. */
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if (howto->pc_relative)
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{
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bfd_vma sign;
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sign = howto->dst_mask & (~howto->dst_mask >> 1 | ~(-(bfd_vma) 1 >> 1));
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sign = sign >> howto->bitpos << howto->rightshift;
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val = (val ^ sign) - sign;
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}
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return val;
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}
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static void
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insert_rel_addend (abfd, where, howto, addend)
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bfd *abfd;
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bfd_byte *where;
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reloc_howto_type *howto;
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bfd_vma addend;
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{
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bfd_vma insn;
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addend = (addend >> howto->rightshift << howto->bitpos) & howto->dst_mask;
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insn = ~howto->dst_mask;
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switch (howto->size)
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{
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case 0:
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insn &= bfd_get_8 (abfd, where);
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insn |= addend;
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bfd_put_8 (abfd, insn, where);
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break;
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case 1:
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insn &= bfd_get_16 (abfd, where);
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insn |= addend;
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bfd_put_16 (abfd, insn, where);
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break;
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case 2:
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insn &= bfd_get_32 (abfd, where);
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insn |= addend;
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bfd_put_32 (abfd, insn, where);
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break;
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default:
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abort ();
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}
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}
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/* Relocate a D10V ELF section. */
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static bfd_boolean
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elf32_d10v_relocate_section (output_bfd, info, input_bfd, input_section,
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contents, relocs, local_syms, local_sections)
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bfd *output_bfd;
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struct bfd_link_info *info;
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bfd *input_bfd;
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asection *input_section;
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bfd_byte *contents;
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Elf_Internal_Rela *relocs;
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Elf_Internal_Sym *local_syms;
|
|
asection **local_sections;
|
|
{
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
Elf_Internal_Rela *rel, *relend;
|
|
const char *name;
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
|
|
|
rel = relocs;
|
|
relend = relocs + input_section->reloc_count;
|
|
for (; rel < relend; rel++)
|
|
{
|
|
int r_type;
|
|
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;
|
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
|
|
|
if (r_type == R_D10V_GNU_VTENTRY
|
|
|| r_type == R_D10V_GNU_VTINHERIT )
|
|
continue;
|
|
|
|
howto = elf_d10v_howto_table + r_type;
|
|
|
|
if (info->relocatable)
|
|
{
|
|
bfd_vma val;
|
|
bfd_byte *where;
|
|
|
|
/* This is a relocatable 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)
|
|
continue;
|
|
|
|
sym = local_syms + r_symndx;
|
|
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
|
continue;
|
|
|
|
sec = local_sections[r_symndx];
|
|
val = sec->output_offset;
|
|
if (val == 0)
|
|
continue;
|
|
|
|
where = contents + rel->r_offset;
|
|
val += extract_rel_addend (input_bfd, where, howto);
|
|
insert_rel_addend (input_bfd, where, howto, val);
|
|
continue;
|
|
}
|
|
|
|
/* This is a final link. */
|
|
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);
|
|
if ((sec->flags & SEC_MERGE)
|
|
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
|
{
|
|
asection *msec;
|
|
bfd_vma addend;
|
|
bfd_byte *where = contents + rel->r_offset;
|
|
|
|
addend = extract_rel_addend (input_bfd, where, howto);
|
|
msec = sec;
|
|
addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
|
|
addend -= relocation;
|
|
addend += msec->output_section->vma + msec->output_offset;
|
|
insert_rel_addend (input_bfd, where, howto, addend);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
bfd_boolean unresolved_reloc, warned;
|
|
|
|
RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, symtab_hdr,
|
|
relocation, sec, unresolved_reloc,
|
|
info, warned);
|
|
}
|
|
|
|
if (h != NULL)
|
|
name = h->root.root.string;
|
|
else
|
|
{
|
|
name = (bfd_elf_string_from_elf_section
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
|
if (name == NULL || *name == '\0')
|
|
name = bfd_section_name (input_bfd, sec);
|
|
}
|
|
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
|
contents, rel->r_offset,
|
|
relocation, (bfd_vma) 0);
|
|
|
|
if (r != bfd_reloc_ok)
|
|
{
|
|
const char * msg = (const char *) 0;
|
|
|
|
switch (r)
|
|
{
|
|
case bfd_reloc_overflow:
|
|
if (!((*info->callbacks->reloc_overflow)
|
|
(info, name, howto->name, (bfd_vma) 0,
|
|
input_bfd, input_section, rel->r_offset)))
|
|
return FALSE;
|
|
break;
|
|
|
|
case bfd_reloc_undefined:
|
|
if (!((*info->callbacks->undefined_symbol)
|
|
(info, name, input_bfd, input_section,
|
|
rel->r_offset, TRUE)))
|
|
return FALSE;
|
|
break;
|
|
|
|
case bfd_reloc_outofrange:
|
|
msg = _("internal error: out of range error");
|
|
goto common_error;
|
|
|
|
case bfd_reloc_notsupported:
|
|
msg = _("internal error: unsupported relocation error");
|
|
goto common_error;
|
|
|
|
case bfd_reloc_dangerous:
|
|
msg = _("internal error: dangerous error");
|
|
goto common_error;
|
|
|
|
default:
|
|
msg = _("internal error: unknown error");
|
|
/* fall through */
|
|
|
|
common_error:
|
|
if (!((*info->callbacks->warning)
|
|
(info, msg, name, input_bfd, input_section,
|
|
rel->r_offset)))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
#define ELF_ARCH bfd_arch_d10v
|
|
#define ELF_MACHINE_CODE EM_D10V
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_D10V
|
|
#define ELF_MAXPAGESIZE 0x1000
|
|
|
|
#define TARGET_BIG_SYM bfd_elf32_d10v_vec
|
|
#define TARGET_BIG_NAME "elf32-d10v"
|
|
|
|
#define elf_info_to_howto 0
|
|
#define elf_info_to_howto_rel d10v_info_to_howto_rel
|
|
#define elf_backend_object_p 0
|
|
#define elf_backend_final_write_processing 0
|
|
#define elf_backend_gc_mark_hook elf32_d10v_gc_mark_hook
|
|
#define elf_backend_gc_sweep_hook elf32_d10v_gc_sweep_hook
|
|
#define elf_backend_check_relocs elf32_d10v_check_relocs
|
|
#define elf_backend_relocate_section elf32_d10v_relocate_section
|
|
#define elf_backend_can_gc_sections 1
|
|
|
|
#include "elf32-target.h"
|