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36af4a4e51
* elflink.h (elf_link_add_object_symbols): Use !info->executable
instead of info->shared where appropriate.
(bfd_elfNN_size_dynamic_sections, elf_link_output_extsym): Likewise.
* elflink.c (_bfd_elf_create_got_section): Likewise.
(_bfd_elf_link_create_dynamic_sections): Likewise.
(_bfd_elf_link_assign_sym_version): Likewise.
* elf32-i386.c (elf_i386_size_dynamic_sections): Create .interp section
and DT_DEBUG dynamic tag even for position independent executables.
* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
* elf32-s390.c (elf_s390_size_dynamic_sections: Likewise.
* elf64-ppc.c (ppc64_elf_size_dynamic_sections: Likewise.
* elf64-s390.c (elf_s390_size_dynamic_sections: Likewise.
* elf64-x86-64.c (elf64_x86_64_size_dynamic_sections: Likewise.
* elfxx-ia64.c (elfNN_ia64_size_dynamic_sections: Likewise.
* elf32-sparc.c (elf32_sparc_size_dynamic_sections: Likewise.
* elf64-alpha.c (elf64_alpha_size_dynamic_sections: Likewise.
* elf64-sparc.c (sparc64_elf_size_dynamic_sections: Likewise.
include/
* bfdlink.h (struct bfd_link_info): Add pie and executable
bits.
ld/
* lexsup.c (OPTION_PIE): Define.
(ld_options): Add -pie and --pic-executable options.
(parse_args): Handle OPTION_PIE.
* ldmain.c (main): Initialize link_info.pie and
link_info.executable.
* genscripts.sh: Generate PIE scripts.
* ld.texinfo: Document -pie and --pic-executable options.
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open):
(gld${EMULATION_NAME}_place_orphan): Likewise.
(gld${EMULATION_NAME}_get_script): Include PIE scripts.
* scripttempl/elf.sc: In PIE scripts set . the same way as in
shared scripts.
* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Set to yes.
* emulparams/elf64_ia64.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf32ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_x86_64.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf32_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64alpha.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Likewise.
3512 lines
109 KiB
C
3512 lines
109 KiB
C
/* SPARC-specific support for 32-bit ELF
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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2003 Free Software Foundation, Inc.
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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 "bfdlink.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/sparc.h"
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#include "opcode/sparc.h"
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static reloc_howto_type *elf32_sparc_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void elf32_sparc_info_to_howto
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PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static bfd_boolean elf32_sparc_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_boolean elf32_sparc_adjust_dynamic_symbol
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PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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static bfd_boolean allocate_dynrelocs
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PARAMS ((struct elf_link_hash_entry *, PTR));
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static bfd_boolean readonly_dynrelocs
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PARAMS ((struct elf_link_hash_entry *, PTR));
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static bfd_boolean elf32_sparc_size_dynamic_sections
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PARAMS ((bfd *, struct bfd_link_info *));
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static bfd_boolean elf32_sparc_new_section_hook
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PARAMS ((bfd *, asection *));
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static bfd_boolean elf32_sparc_relax_section
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PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
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static bfd_vma dtpoff_base
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PARAMS ((struct bfd_link_info *));
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static bfd_vma tpoff
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PARAMS ((struct bfd_link_info *, bfd_vma));
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static bfd_boolean elf32_sparc_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_boolean elf32_sparc_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 bfd_boolean elf32_sparc_finish_dynamic_sections
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PARAMS ((bfd *, struct bfd_link_info *));
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static bfd_boolean elf32_sparc_merge_private_bfd_data
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PARAMS ((bfd *, bfd *));
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static struct bfd_hash_entry *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 *elf32_sparc_link_hash_table_create
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PARAMS ((bfd *));
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static bfd_boolean create_got_section
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PARAMS ((bfd *, struct bfd_link_info *));
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static bfd_boolean elf32_sparc_create_dynamic_sections
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PARAMS ((bfd *, struct bfd_link_info *));
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static void elf32_sparc_copy_indirect_symbol
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PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
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struct elf_link_hash_entry *));
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static int elf32_sparc_tls_transition
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PARAMS ((struct bfd_link_info *, bfd *, int, int));
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static bfd_boolean elf32_sparc_mkobject
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PARAMS ((bfd *));
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static bfd_boolean elf32_sparc_object_p
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PARAMS ((bfd *));
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static void elf32_sparc_final_write_processing
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PARAMS ((bfd *, bfd_boolean));
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static enum elf_reloc_type_class elf32_sparc_reloc_type_class
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PARAMS ((const Elf_Internal_Rela *));
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static asection * elf32_sparc_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_sparc_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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/* The relocation "howto" table. */
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static bfd_reloc_status_type sparc_elf_notsupported_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type sparc_elf_wdisp16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type sparc_elf_hix22_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type sparc_elf_lox10_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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reloc_howto_type _bfd_sparc_elf_howto_table[] =
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{
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
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HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
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HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
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HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
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HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
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HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
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HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
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HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
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HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
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HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
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HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
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HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
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HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
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/* These are for sparc64 in a 64 bit environment.
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Values need to be here because the table is indexed by reloc number. */
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HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE),
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/* End sparc64 in 64 bit environment values.
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The following are for sparc64 in a 32 bit environment. */
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HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
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HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
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HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
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HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
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HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
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HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
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HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
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HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
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HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
|
||
HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
|
||
HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
|
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HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
|
||
HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
|
||
HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
|
||
HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
|
||
HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
|
||
HOWTO(R_SPARC_TLS_DTPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPOFF64",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
|
||
HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE)
|
||
};
|
||
static reloc_howto_type elf32_sparc_vtinherit_howto =
|
||
HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
|
||
static reloc_howto_type elf32_sparc_vtentry_howto =
|
||
HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
|
||
static reloc_howto_type elf32_sparc_rev32_howto =
|
||
HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
|
||
|
||
struct elf_reloc_map {
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
unsigned char elf_reloc_val;
|
||
};
|
||
|
||
static const struct elf_reloc_map sparc_reloc_map[] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_SPARC_NONE, },
|
||
{ BFD_RELOC_16, R_SPARC_16, },
|
||
{ BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
|
||
{ BFD_RELOC_8, R_SPARC_8 },
|
||
{ BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
|
||
{ BFD_RELOC_CTOR, R_SPARC_32 },
|
||
{ BFD_RELOC_32, R_SPARC_32 },
|
||
{ BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
|
||
{ BFD_RELOC_HI22, R_SPARC_HI22 },
|
||
{ BFD_RELOC_LO10, R_SPARC_LO10, },
|
||
{ BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
|
||
{ BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
|
||
{ BFD_RELOC_SPARC22, R_SPARC_22 },
|
||
{ BFD_RELOC_SPARC13, R_SPARC_13 },
|
||
{ BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
|
||
{ BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
|
||
{ BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
|
||
{ BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
|
||
{ BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
|
||
{ BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
|
||
{ BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
|
||
{ BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
|
||
{ BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
|
||
{ BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
|
||
{ BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
|
||
{ BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
|
||
{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
|
||
{ BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
|
||
{ BFD_RELOC_SPARC_10, R_SPARC_10 },
|
||
{ BFD_RELOC_SPARC_11, R_SPARC_11 },
|
||
{ BFD_RELOC_SPARC_64, R_SPARC_64 },
|
||
{ BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
|
||
{ BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
|
||
{ BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
|
||
{ BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
|
||
{ BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
|
||
{ BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
|
||
{ BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
|
||
{ BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
|
||
{ BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
|
||
{ BFD_RELOC_SPARC_7, R_SPARC_7 },
|
||
{ BFD_RELOC_SPARC_5, R_SPARC_5 },
|
||
{ BFD_RELOC_SPARC_6, R_SPARC_6 },
|
||
{ BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
|
||
{ BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
|
||
{ BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
|
||
{ BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
|
||
{ BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
|
||
{ BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
|
||
{ BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
|
||
{ BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
|
||
{ BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
|
||
{ BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
|
||
{ BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
|
||
{ BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
|
||
{ BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
|
||
{ BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
|
||
{ BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
|
||
{ BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
|
||
{ BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
|
||
{ BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
|
||
{ BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
|
||
{ BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
|
||
{ BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
|
||
{ BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
|
||
{ BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
|
||
{ BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
|
||
{ BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }
|
||
};
|
||
|
||
static reloc_howto_type *
|
||
elf32_sparc_reloc_type_lookup (abfd, code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
return &elf32_sparc_vtinherit_howto;
|
||
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
return &elf32_sparc_vtentry_howto;
|
||
|
||
case BFD_RELOC_SPARC_REV32:
|
||
return &elf32_sparc_rev32_howto;
|
||
|
||
default:
|
||
for (i = 0;
|
||
i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
|
||
i++)
|
||
{
|
||
if (sparc_reloc_map[i].bfd_reloc_val == code)
|
||
return (_bfd_sparc_elf_howto_table
|
||
+ (int) sparc_reloc_map[i].elf_reloc_val);
|
||
}
|
||
}
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
|
||
/* We need to use ELF32_R_TYPE so we have our own copy of this function,
|
||
and elf64-sparc.c has its own copy. */
|
||
|
||
static void
|
||
elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr;
|
||
Elf_Internal_Rela *dst;
|
||
{
|
||
switch (ELF32_R_TYPE(dst->r_info))
|
||
{
|
||
case R_SPARC_GNU_VTINHERIT:
|
||
cache_ptr->howto = &elf32_sparc_vtinherit_howto;
|
||
break;
|
||
|
||
case R_SPARC_GNU_VTENTRY:
|
||
cache_ptr->howto = &elf32_sparc_vtentry_howto;
|
||
break;
|
||
|
||
case R_SPARC_REV32:
|
||
cache_ptr->howto = &elf32_sparc_rev32_howto;
|
||
break;
|
||
|
||
default:
|
||
BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
|
||
cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
|
||
}
|
||
}
|
||
|
||
/* For unsupported relocs. */
|
||
|
||
static bfd_reloc_status_type
|
||
sparc_elf_notsupported_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry ATTRIBUTE_UNUSED;
|
||
asymbol *symbol ATTRIBUTE_UNUSED;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section ATTRIBUTE_UNUSED;
|
||
bfd *output_bfd ATTRIBUTE_UNUSED;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
return bfd_reloc_notsupported;
|
||
}
|
||
|
||
/* Handle the WDISP16 reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
sparc_elf_wdisp16_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_vma x;
|
||
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& (! reloc_entry->howto->partial_inplace
|
||
|| reloc_entry->addend == 0))
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
relocation = (symbol->value
|
||
+ symbol->section->output_section->vma
|
||
+ symbol->section->output_offset);
|
||
relocation += reloc_entry->addend;
|
||
relocation -= (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
relocation -= reloc_entry->address;
|
||
|
||
x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
x |= ((((relocation >> 2) & 0xc000) << 6)
|
||
| ((relocation >> 2) & 0x3fff));
|
||
bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
if ((bfd_signed_vma) relocation < - 0x40000
|
||
|| (bfd_signed_vma) relocation > 0x3ffff)
|
||
return bfd_reloc_overflow;
|
||
else
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Handle the HIX22 reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
sparc_elf_hix22_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_vma insn;
|
||
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
relocation = (symbol->value
|
||
+ symbol->section->output_section->vma
|
||
+ symbol->section->output_offset);
|
||
relocation += reloc_entry->addend;
|
||
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff);
|
||
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Handle the LOX10 reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
sparc_elf_lox10_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_vma insn;
|
||
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
relocation = (symbol->value
|
||
+ symbol->section->output_section->vma
|
||
+ symbol->section->output_offset);
|
||
relocation += reloc_entry->addend;
|
||
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
|
||
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Functions for the SPARC ELF linker. */
|
||
|
||
/* The name of the dynamic interpreter. This is put in the .interp
|
||
section. */
|
||
|
||
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
||
|
||
/* The nop opcode we use. */
|
||
|
||
#define SPARC_NOP 0x01000000
|
||
|
||
/* The size in bytes of an entry in the procedure linkage table. */
|
||
|
||
#define PLT_ENTRY_SIZE 12
|
||
|
||
/* The first four entries in a procedure linkage table are reserved,
|
||
and the initial contents are unimportant (we zero them out).
|
||
Subsequent entries look like this. See the SVR4 ABI SPARC
|
||
supplement to see how this works. */
|
||
|
||
/* sethi %hi(.-.plt0),%g1. We fill in the address later. */
|
||
#define PLT_ENTRY_WORD0 0x03000000
|
||
/* b,a .plt0. We fill in the offset later. */
|
||
#define PLT_ENTRY_WORD1 0x30800000
|
||
/* nop. */
|
||
#define PLT_ENTRY_WORD2 SPARC_NOP
|
||
|
||
/* The SPARC linker needs to keep track of the number of relocs that it
|
||
decides to copy as dynamic relocs in check_relocs for each symbol.
|
||
This is so that it can later discard them if they are found to be
|
||
unnecessary. We store the information in a field extending the
|
||
regular ELF linker hash table. */
|
||
|
||
struct elf32_sparc_dyn_relocs
|
||
{
|
||
struct elf32_sparc_dyn_relocs *next;
|
||
|
||
/* The input section of the reloc. */
|
||
asection *sec;
|
||
|
||
/* Total number of relocs copied for the input section. */
|
||
bfd_size_type count;
|
||
|
||
/* Number of pc-relative relocs copied for the input section. */
|
||
bfd_size_type pc_count;
|
||
};
|
||
|
||
/* SPARC ELF linker hash entry. */
|
||
|
||
struct elf32_sparc_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry elf;
|
||
|
||
/* Track dynamic relocs copied for this symbol. */
|
||
struct elf32_sparc_dyn_relocs *dyn_relocs;
|
||
|
||
#define GOT_UNKNOWN 0
|
||
#define GOT_NORMAL 1
|
||
#define GOT_TLS_GD 2
|
||
#define GOT_TLS_IE 3
|
||
unsigned char tls_type;
|
||
};
|
||
|
||
#define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
|
||
|
||
struct elf32_sparc_obj_tdata
|
||
{
|
||
struct elf_obj_tdata root;
|
||
|
||
/* tls_type for each local got entry. */
|
||
char *local_got_tls_type;
|
||
|
||
/* TRUE if TLS GD relocs has been seen for this object. */
|
||
bfd_boolean has_tlsgd;
|
||
};
|
||
|
||
#define elf32_sparc_tdata(abfd) \
|
||
((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
|
||
|
||
#define elf32_sparc_local_got_tls_type(abfd) \
|
||
(elf32_sparc_tdata (abfd)->local_got_tls_type)
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_mkobject (abfd)
|
||
bfd *abfd;
|
||
{
|
||
bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
|
||
abfd->tdata.any = bfd_zalloc (abfd, amt);
|
||
if (abfd->tdata.any == NULL)
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* SPARC ELF linker hash table. */
|
||
|
||
struct elf32_sparc_link_hash_table
|
||
{
|
||
struct elf_link_hash_table elf;
|
||
|
||
/* Short-cuts to get to dynamic linker sections. */
|
||
asection *sgot;
|
||
asection *srelgot;
|
||
asection *splt;
|
||
asection *srelplt;
|
||
asection *sdynbss;
|
||
asection *srelbss;
|
||
|
||
union {
|
||
bfd_signed_vma refcount;
|
||
bfd_vma offset;
|
||
} tls_ldm_got;
|
||
|
||
/* Small local sym to section mapping cache. */
|
||
struct sym_sec_cache sym_sec;
|
||
};
|
||
|
||
/* Get the SPARC ELF linker hash table from a link_info structure. */
|
||
|
||
#define elf32_sparc_hash_table(p) \
|
||
((struct elf32_sparc_link_hash_table *) ((p)->hash))
|
||
|
||
/* Create an entry in an i386 ELF linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
link_hash_newfunc (entry, table, string)
|
||
struct bfd_hash_entry *entry;
|
||
struct bfd_hash_table *table;
|
||
const char *string;
|
||
{
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (entry == NULL)
|
||
{
|
||
entry = bfd_hash_allocate (table,
|
||
sizeof (struct elf32_sparc_link_hash_entry));
|
||
if (entry == NULL)
|
||
return entry;
|
||
}
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
||
if (entry != NULL)
|
||
{
|
||
struct elf32_sparc_link_hash_entry *eh;
|
||
|
||
eh = (struct elf32_sparc_link_hash_entry *) entry;
|
||
eh->dyn_relocs = NULL;
|
||
eh->tls_type = GOT_UNKNOWN;
|
||
}
|
||
|
||
return entry;
|
||
}
|
||
|
||
/* Create a SPARC ELF linker hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
elf32_sparc_link_hash_table_create (abfd)
|
||
bfd *abfd;
|
||
{
|
||
struct elf32_sparc_link_hash_table *ret;
|
||
bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
|
||
|
||
ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
|
||
if (ret == NULL)
|
||
return NULL;
|
||
|
||
if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
|
||
{
|
||
free (ret);
|
||
return NULL;
|
||
}
|
||
|
||
ret->sgot = NULL;
|
||
ret->srelgot = NULL;
|
||
ret->splt = NULL;
|
||
ret->srelplt = NULL;
|
||
ret->sdynbss = NULL;
|
||
ret->srelbss = NULL;
|
||
ret->tls_ldm_got.refcount = 0;
|
||
ret->sym_sec.abfd = NULL;
|
||
|
||
return &ret->elf.root;
|
||
}
|
||
|
||
/* Create .got and .rela.got sections in DYNOBJ, and set up
|
||
shortcuts to them in our hash table. */
|
||
|
||
static bfd_boolean
|
||
create_got_section (dynobj, info)
|
||
bfd *dynobj;
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
|
||
if (! _bfd_elf_create_got_section (dynobj, info))
|
||
return FALSE;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
if (!htab->sgot)
|
||
abort ();
|
||
|
||
htab->srelgot = bfd_make_section (dynobj, ".rela.got");
|
||
if (htab->srelgot == NULL
|
||
|| ! bfd_set_section_flags (dynobj, htab->srelgot,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY | SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
|
||
.rela.bss sections in DYNOBJ, and set up shortcuts to them in our
|
||
hash table. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_create_dynamic_sections (dynobj, info)
|
||
bfd *dynobj;
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
if (!htab->sgot && !create_got_section (dynobj, info))
|
||
return FALSE;
|
||
|
||
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
||
return FALSE;
|
||
|
||
htab->splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
|
||
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
||
if (!info->shared)
|
||
htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
|
||
|
||
if (!htab->splt || !htab->srelplt || !htab->sdynbss
|
||
|| (!info->shared && !htab->srelbss))
|
||
abort ();
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
||
|
||
static void
|
||
elf32_sparc_copy_indirect_symbol (bed, dir, ind)
|
||
struct elf_backend_data *bed;
|
||
struct elf_link_hash_entry *dir, *ind;
|
||
{
|
||
struct elf32_sparc_link_hash_entry *edir, *eind;
|
||
|
||
edir = (struct elf32_sparc_link_hash_entry *) dir;
|
||
eind = (struct elf32_sparc_link_hash_entry *) ind;
|
||
|
||
if (eind->dyn_relocs != NULL)
|
||
{
|
||
if (edir->dyn_relocs != NULL)
|
||
{
|
||
struct elf32_sparc_dyn_relocs **pp;
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
|
||
if (ind->root.type == bfd_link_hash_indirect)
|
||
abort ();
|
||
|
||
/* Add reloc counts against the weak sym to the strong sym
|
||
list. Merge any entries against the same section. */
|
||
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
||
{
|
||
struct elf32_sparc_dyn_relocs *q;
|
||
|
||
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
||
if (q->sec == p->sec)
|
||
{
|
||
q->pc_count += p->pc_count;
|
||
q->count += p->count;
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
if (q == NULL)
|
||
pp = &p->next;
|
||
}
|
||
*pp = edir->dyn_relocs;
|
||
}
|
||
|
||
edir->dyn_relocs = eind->dyn_relocs;
|
||
eind->dyn_relocs = NULL;
|
||
}
|
||
|
||
if (ind->root.type == bfd_link_hash_indirect
|
||
&& dir->got.refcount <= 0)
|
||
{
|
||
edir->tls_type = eind->tls_type;
|
||
eind->tls_type = GOT_UNKNOWN;
|
||
}
|
||
_bfd_elf_link_hash_copy_indirect (bed, dir, ind);
|
||
}
|
||
|
||
static int
|
||
elf32_sparc_tls_transition (info, abfd, r_type, is_local)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
int r_type;
|
||
int is_local;
|
||
{
|
||
if (r_type == R_SPARC_TLS_GD_HI22
|
||
&& ! elf32_sparc_tdata (abfd)->has_tlsgd)
|
||
r_type = R_SPARC_REV32;
|
||
|
||
if (info->shared)
|
||
return r_type;
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
if (is_local)
|
||
return R_SPARC_TLS_LE_HIX22;
|
||
return R_SPARC_TLS_IE_HI22;
|
||
case R_SPARC_TLS_GD_LO10:
|
||
if (is_local)
|
||
return R_SPARC_TLS_LE_LOX10;
|
||
return R_SPARC_TLS_IE_LO10;
|
||
case R_SPARC_TLS_IE_HI22:
|
||
if (is_local)
|
||
return R_SPARC_TLS_LE_HIX22;
|
||
return r_type;
|
||
case R_SPARC_TLS_IE_LO10:
|
||
if (is_local)
|
||
return R_SPARC_TLS_LE_LOX10;
|
||
return r_type;
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
return R_SPARC_TLS_LE_HIX22;
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
return R_SPARC_TLS_LE_LOX10;
|
||
}
|
||
|
||
return r_type;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase, and
|
||
allocate space in the global offset table or procedure linkage
|
||
table. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_vma *local_got_offsets;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sreloc;
|
||
bfd_boolean checked_tlsgd = FALSE;
|
||
|
||
if (info->relocateable)
|
||
return TRUE;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_offsets = elf_local_got_offsets (abfd);
|
||
|
||
sreloc = NULL;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
unsigned int r_type;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
|
||
{
|
||
(*_bfd_error_handler) (_("%s: bad symbol index: %d"),
|
||
bfd_archive_filename (abfd),
|
||
r_symndx);
|
||
return FALSE;
|
||
}
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
/* Compatibility with old R_SPARC_REV32 reloc conflicting
|
||
with R_SPARC_TLS_GD_HI22. */
|
||
if (! checked_tlsgd)
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
{
|
||
const Elf_Internal_Rela *relt;
|
||
|
||
for (relt = rel + 1; relt < rel_end; relt++)
|
||
if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
|
||
|| ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
|
||
|| ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
|
||
break;
|
||
checked_tlsgd = TRUE;
|
||
elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
|
||
}
|
||
break;
|
||
case R_SPARC_TLS_GD_LO10:
|
||
case R_SPARC_TLS_GD_ADD:
|
||
case R_SPARC_TLS_GD_CALL:
|
||
checked_tlsgd = TRUE;
|
||
elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
|
||
break;
|
||
}
|
||
|
||
r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
htab->tls_ldm_got.refcount += 1;
|
||
break;
|
||
|
||
case R_SPARC_TLS_LE_HIX22:
|
||
case R_SPARC_TLS_LE_LOX10:
|
||
if (info->shared)
|
||
goto r_sparc_plt32;
|
||
break;
|
||
|
||
case R_SPARC_TLS_IE_HI22:
|
||
case R_SPARC_TLS_IE_LO10:
|
||
if (info->shared)
|
||
info->flags |= DF_STATIC_TLS;
|
||
/* Fall through */
|
||
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
case R_SPARC_TLS_GD_HI22:
|
||
case R_SPARC_TLS_GD_LO10:
|
||
/* This symbol requires a global offset table entry. */
|
||
{
|
||
int tls_type, old_tls_type;
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
tls_type = GOT_NORMAL;
|
||
break;
|
||
case R_SPARC_TLS_GD_HI22:
|
||
case R_SPARC_TLS_GD_LO10:
|
||
tls_type = GOT_TLS_GD;
|
||
break;
|
||
case R_SPARC_TLS_IE_HI22:
|
||
case R_SPARC_TLS_IE_LO10:
|
||
tls_type = GOT_TLS_IE;
|
||
break;
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
h->got.refcount += 1;
|
||
old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
|
||
}
|
||
else
|
||
{
|
||
bfd_signed_vma *local_got_refcounts;
|
||
|
||
/* This is a global offset table entry for a local symbol. */
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
if (local_got_refcounts == NULL)
|
||
{
|
||
bfd_size_type size;
|
||
|
||
size = symtab_hdr->sh_info;
|
||
size *= (sizeof (bfd_signed_vma) + sizeof(char));
|
||
local_got_refcounts = ((bfd_signed_vma *)
|
||
bfd_zalloc (abfd, size));
|
||
if (local_got_refcounts == NULL)
|
||
return FALSE;
|
||
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
||
elf32_sparc_local_got_tls_type (abfd)
|
||
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
|
||
}
|
||
local_got_refcounts[r_symndx] += 1;
|
||
old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
|
||
}
|
||
|
||
/* If a TLS symbol is accessed using IE at least once,
|
||
there is no point to use dynamic model for it. */
|
||
if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
|
||
&& (old_tls_type != GOT_TLS_GD
|
||
|| tls_type != GOT_TLS_IE))
|
||
{
|
||
if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
|
||
tls_type = old_tls_type;
|
||
else
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: `%s' accessed both as normal and thread local symbol"),
|
||
bfd_archive_filename (abfd),
|
||
h ? h->root.root.string : "<local>");
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
if (old_tls_type != tls_type)
|
||
{
|
||
if (h != NULL)
|
||
elf32_sparc_hash_entry (h)->tls_type = tls_type;
|
||
else
|
||
elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type;
|
||
}
|
||
}
|
||
|
||
if (htab->elf.dynobj == NULL)
|
||
htab->elf.dynobj = abfd;
|
||
if (!create_got_section (htab->elf.dynobj, info))
|
||
return FALSE;
|
||
break;
|
||
|
||
case R_SPARC_TLS_GD_CALL:
|
||
case R_SPARC_TLS_LDM_CALL:
|
||
if (info->shared)
|
||
{
|
||
/* These are basically R_SPARC_TLS_WPLT30 relocs against
|
||
__tls_get_addr. */
|
||
struct bfd_link_hash_entry *bh = NULL;
|
||
if (! _bfd_generic_link_add_one_symbol (info, abfd,
|
||
"__tls_get_addr", 0,
|
||
bfd_und_section_ptr, 0,
|
||
NULL, FALSE, FALSE,
|
||
&bh))
|
||
return FALSE;
|
||
h = (struct elf_link_hash_entry *) bh;
|
||
}
|
||
else
|
||
break;
|
||
/* Fall through */
|
||
|
||
case R_SPARC_PLT32:
|
||
case R_SPARC_WPLT30:
|
||
/* 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 without
|
||
linking in any dynamic objects, in which case we don't
|
||
need to generate a procedure linkage table after all. */
|
||
|
||
if (h == NULL)
|
||
{
|
||
/* The Solaris native assembler will generate a WPLT30
|
||
reloc for a local symbol if you assemble a call from
|
||
one section to another when using -K pic. We treat
|
||
it as WDISP30. */
|
||
if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
|
||
goto r_sparc_plt32;
|
||
break;
|
||
}
|
||
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
|
||
if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
|
||
goto r_sparc_plt32;
|
||
h->plt.refcount += 1;
|
||
break;
|
||
|
||
case R_SPARC_PC10:
|
||
case R_SPARC_PC22:
|
||
if (h != NULL)
|
||
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
||
|
||
if (h != NULL
|
||
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
break;
|
||
/* Fall through. */
|
||
|
||
case R_SPARC_DISP8:
|
||
case R_SPARC_DISP16:
|
||
case R_SPARC_DISP32:
|
||
case R_SPARC_WDISP30:
|
||
case R_SPARC_WDISP22:
|
||
case R_SPARC_WDISP19:
|
||
case R_SPARC_WDISP16:
|
||
case R_SPARC_8:
|
||
case R_SPARC_16:
|
||
case R_SPARC_32:
|
||
case R_SPARC_HI22:
|
||
case R_SPARC_22:
|
||
case R_SPARC_13:
|
||
case R_SPARC_LO10:
|
||
case R_SPARC_UA16:
|
||
case R_SPARC_UA32:
|
||
if (h != NULL)
|
||
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
||
|
||
r_sparc_plt32:
|
||
if (h != NULL && !info->shared)
|
||
{
|
||
/* We may need a .plt entry if the function this reloc
|
||
refers to is in a shared lib. */
|
||
h->plt.refcount += 1;
|
||
}
|
||
|
||
/* If we are creating a shared library, and this is a reloc
|
||
against a global symbol, or a non PC relative reloc
|
||
against a local symbol, then we need to copy the reloc
|
||
into the shared library. However, if we are linking with
|
||
-Bsymbolic, we do not need to copy a reloc against a
|
||
global symbol which is defined in an object we are
|
||
including in the link (i.e., DEF_REGULAR is set). 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.
|
||
|
||
If on the other hand, we are creating an executable, we
|
||
may need to keep relocations for symbols satisfied by a
|
||
dynamic library if we manage to avoid copy relocs for the
|
||
symbol. */
|
||
if ((info->shared
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& (! _bfd_sparc_elf_howto_table[r_type].pc_relative
|
||
|| (h != NULL
|
||
&& (! info->symbolic
|
||
|| h->root.type == bfd_link_hash_defweak
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
||
|| (!info->shared
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& h != NULL
|
||
&& (h->root.type == bfd_link_hash_defweak
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
||
{
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
struct elf32_sparc_dyn_relocs **head;
|
||
|
||
/* When creating a shared object, we must copy these
|
||
relocs into the output file. We create a reloc
|
||
section in dynobj and make room for the reloc. */
|
||
if (sreloc == NULL)
|
||
{
|
||
const char *name;
|
||
bfd *dynobj;
|
||
|
||
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);
|
||
|
||
if (htab->elf.dynobj == NULL)
|
||
htab->elf.dynobj = abfd;
|
||
dynobj = htab->elf.dynobj;
|
||
|
||
sreloc = bfd_get_section_by_name (dynobj, name);
|
||
if (sreloc == NULL)
|
||
{
|
||
flagword flags;
|
||
|
||
sreloc = bfd_make_section (dynobj, name);
|
||
flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
||
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
if ((sec->flags & SEC_ALLOC) != 0)
|
||
flags |= SEC_ALLOC | SEC_LOAD;
|
||
if (sreloc == NULL
|
||
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
|
||
return FALSE;
|
||
}
|
||
elf_section_data (sec)->sreloc = sreloc;
|
||
}
|
||
|
||
/* If this is a global symbol, we count the number of
|
||
relocations we need for this symbol. */
|
||
if (h != NULL)
|
||
head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
|
||
else
|
||
{
|
||
/* Track dynamic relocs needed for local syms too.
|
||
We really need local syms available to do this
|
||
easily. Oh well. */
|
||
|
||
asection *s;
|
||
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
|
||
sec, r_symndx);
|
||
if (s == NULL)
|
||
return FALSE;
|
||
|
||
head = ((struct elf32_sparc_dyn_relocs **)
|
||
&elf_section_data (s)->local_dynrel);
|
||
}
|
||
|
||
p = *head;
|
||
if (p == NULL || p->sec != sec)
|
||
{
|
||
bfd_size_type amt = sizeof *p;
|
||
p = ((struct elf32_sparc_dyn_relocs *)
|
||
bfd_alloc (htab->elf.dynobj, amt));
|
||
if (p == NULL)
|
||
return FALSE;
|
||
p->next = *head;
|
||
*head = p;
|
||
p->sec = sec;
|
||
p->count = 0;
|
||
p->pc_count = 0;
|
||
}
|
||
|
||
p->count += 1;
|
||
if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
|
||
p->pc_count += 1;
|
||
}
|
||
|
||
break;
|
||
|
||
case R_SPARC_GNU_VTINHERIT:
|
||
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
case R_SPARC_GNU_VTENTRY:
|
||
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static asection *
|
||
elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
|
||
asection *sec;
|
||
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_SPARC_GNU_VTINHERIT:
|
||
case R_SPARC_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
|
||
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
static bfd_boolean
|
||
elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
|
||
elf_section_data (sec)->local_dynrel = NULL;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
unsigned int r_type;
|
||
struct elf_link_hash_entry *h = NULL;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
struct elf32_sparc_link_hash_entry *eh;
|
||
struct elf32_sparc_dyn_relocs **pp;
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
eh = (struct elf32_sparc_link_hash_entry *) h;
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
||
if (p->sec == sec)
|
||
{
|
||
/* Everything must go for SEC. */
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
}
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
|
||
elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
|
||
break;
|
||
|
||
case R_SPARC_TLS_GD_HI22:
|
||
case R_SPARC_TLS_GD_LO10:
|
||
case R_SPARC_TLS_IE_HI22:
|
||
case R_SPARC_TLS_IE_LO10:
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
if (h != NULL)
|
||
{
|
||
if (h->got.refcount > 0)
|
||
h->got.refcount--;
|
||
}
|
||
else
|
||
{
|
||
if (local_got_refcounts[r_symndx] > 0)
|
||
local_got_refcounts[r_symndx]--;
|
||
}
|
||
break;
|
||
|
||
case R_SPARC_PC10:
|
||
case R_SPARC_PC22:
|
||
if (h != NULL
|
||
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
break;
|
||
/* Fall through. */
|
||
|
||
case R_SPARC_DISP8:
|
||
case R_SPARC_DISP16:
|
||
case R_SPARC_DISP32:
|
||
case R_SPARC_WDISP30:
|
||
case R_SPARC_WDISP22:
|
||
case R_SPARC_WDISP19:
|
||
case R_SPARC_WDISP16:
|
||
case R_SPARC_8:
|
||
case R_SPARC_16:
|
||
case R_SPARC_32:
|
||
case R_SPARC_HI22:
|
||
case R_SPARC_22:
|
||
case R_SPARC_13:
|
||
case R_SPARC_LO10:
|
||
case R_SPARC_UA16:
|
||
case R_SPARC_UA32:
|
||
case R_SPARC_PLT32:
|
||
if (info->shared)
|
||
break;
|
||
/* Fall through. */
|
||
|
||
case R_SPARC_WPLT30:
|
||
if (h != NULL)
|
||
{
|
||
if (h->plt.refcount > 0)
|
||
h->plt.refcount--;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* 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 bfd_boolean
|
||
elf32_sparc_adjust_dynamic_symbol (info, h)
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
struct elf32_sparc_link_hash_entry * eh;
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
asection *s;
|
||
unsigned int power_of_two;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (htab->elf.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
|
||
(although we could actually do it here). The STT_NOTYPE
|
||
condition is a hack specifically for the Oracle libraries
|
||
delivered for Solaris; for some inexplicable reason, they define
|
||
some of their functions as STT_NOTYPE when they really should be
|
||
STT_FUNC. */
|
||
if (h->type == STT_FUNC
|
||
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
|
||
|| (h->type == STT_NOTYPE
|
||
&& (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
&& (h->root.u.def.section->flags & SEC_CODE) != 0))
|
||
{
|
||
if (h->plt.refcount <= 0
|
||
|| (! info->shared
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
|
||
&& h->root.type != bfd_link_hash_undefweak
|
||
&& h->root.type != bfd_link_hash_undefined))
|
||
{
|
||
/* This case can occur if we saw a WPLT30 reloc in an input
|
||
file, but the symbol was never referred to by a dynamic
|
||
object, or if all references were garbage collected. In
|
||
such a case, we don't actually need to build a procedure
|
||
linkage table, and we can just do a WDISP30 reloc instead. */
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
else
|
||
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;
|
||
|
||
eh = (struct elf32_sparc_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
s = p->sec->output_section;
|
||
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
||
break;
|
||
}
|
||
|
||
/* If we didn't find any dynamic relocs in read-only sections, then
|
||
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
||
if (p == NULL)
|
||
{
|
||
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
|
||
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. */
|
||
|
||
/* We must generate a R_SPARC_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
|
||
.rel.bss section we are going to use. */
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
||
}
|
||
|
||
/* 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 = htab->sdynbss;
|
||
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;
|
||
}
|
||
|
||
/* This is the condition under which finish_dynamic_symbol will be called
|
||
from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
|
||
routine, we'll need to do something about initializing any .plt and .got
|
||
entries in relocate_section. */
|
||
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
|
||
((DYN) \
|
||
&& ((INFO)->shared \
|
||
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
|
||
&& ((H)->dynindx != -1 \
|
||
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
|
||
|
||
/* Allocate space in .plt, .got and associated reloc sections for
|
||
dynamic relocs. */
|
||
|
||
static bfd_boolean
|
||
allocate_dynrelocs (h, inf)
|
||
struct elf_link_hash_entry *h;
|
||
PTR inf;
|
||
{
|
||
struct bfd_link_info *info;
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
struct elf32_sparc_link_hash_entry *eh;
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
|
||
if (h->root.type == bfd_link_hash_indirect)
|
||
return TRUE;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
/* When warning symbols are created, they **replace** the "real"
|
||
entry in the hash table, thus we never get to see the real
|
||
symbol in a hash traversal. So look at it now. */
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
info = (struct bfd_link_info *) inf;
|
||
htab = elf32_sparc_hash_table (info);
|
||
|
||
if (htab->elf.dynamic_sections_created
|
||
&& h->plt.refcount > 0)
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
||
{
|
||
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
|
||
{
|
||
asection *s = htab->splt;
|
||
|
||
/* The first four entries in .plt are reserved. */
|
||
if (s->_raw_size == 0)
|
||
s->_raw_size = 4 * PLT_ENTRY_SIZE;
|
||
|
||
/* The procedure linkage table has a maximum size. */
|
||
if (s->_raw_size >= 0x400000)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
|
||
h->plt.offset = s->_raw_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 = h->plt.offset;
|
||
}
|
||
|
||
/* Make room for this entry. */
|
||
s->_raw_size += PLT_ENTRY_SIZE;
|
||
|
||
/* We also need to make an entry in the .rela.plt section. */
|
||
htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
{
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
|
||
/* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
|
||
make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
|
||
if (h->got.refcount > 0
|
||
&& !info->shared
|
||
&& h->dynindx == -1
|
||
&& elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
|
||
h->got.offset = (bfd_vma) -1;
|
||
else if (h->got.refcount > 0)
|
||
{
|
||
asection *s;
|
||
bfd_boolean dyn;
|
||
int tls_type = elf32_sparc_hash_entry(h)->tls_type;
|
||
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
||
{
|
||
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
s = htab->sgot;
|
||
h->got.offset = s->_raw_size;
|
||
s->_raw_size += 4;
|
||
/* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
|
||
if (tls_type == GOT_TLS_GD)
|
||
s->_raw_size += 4;
|
||
dyn = htab->elf.dynamic_sections_created;
|
||
/* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
|
||
R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
|
||
global. */
|
||
if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
|
||
|| tls_type == GOT_TLS_IE)
|
||
htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
else if (tls_type == GOT_TLS_GD)
|
||
htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
|
||
else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
|
||
htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
h->got.offset = (bfd_vma) -1;
|
||
|
||
eh = (struct elf32_sparc_link_hash_entry *) h;
|
||
if (eh->dyn_relocs == NULL)
|
||
return TRUE;
|
||
|
||
/* In the shared -Bsymbolic case, discard space allocated for
|
||
dynamic pc-relative relocs against symbols which turn out to be
|
||
defined in regular objects. For the normal shared case, discard
|
||
space for pc-relative relocs that have become local due to symbol
|
||
visibility changes. */
|
||
|
||
if (info->shared)
|
||
{
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
||
&& ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|
||
|| info->symbolic))
|
||
{
|
||
struct elf32_sparc_dyn_relocs **pp;
|
||
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
||
{
|
||
p->count -= p->pc_count;
|
||
p->pc_count = 0;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
else
|
||
pp = &p->next;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* For the non-shared case, discard space for relocs against
|
||
symbols which turn out to need copy relocs or are not
|
||
dynamic. */
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
||
&& (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
|| (htab->elf.dynamic_sections_created
|
||
&& (h->root.type == bfd_link_hash_undefweak
|
||
|| h->root.type == bfd_link_hash_undefined))))
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
||
{
|
||
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
/* If that succeeded, we know we'll be keeping all the
|
||
relocs. */
|
||
if (h->dynindx != -1)
|
||
goto keep;
|
||
}
|
||
|
||
eh->dyn_relocs = NULL;
|
||
|
||
keep: ;
|
||
}
|
||
|
||
/* Finally, allocate space. */
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
||
sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Find any dynamic relocs that apply to read-only sections. */
|
||
|
||
static bfd_boolean
|
||
readonly_dynrelocs (h, inf)
|
||
struct elf_link_hash_entry *h;
|
||
PTR inf;
|
||
{
|
||
struct elf32_sparc_link_hash_entry *eh;
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
eh = (struct elf32_sparc_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *s = p->sec->output_section;
|
||
|
||
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
|
||
info->flags |= DF_TEXTREL;
|
||
|
||
/* Not an error, just cut short the traversal. */
|
||
return FALSE;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_size_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *s;
|
||
bfd *ibfd;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
dynobj = htab->elf.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->executable)
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
|
||
/* Set up .got offsets for local syms, and space for local dynamic
|
||
relocs. */
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
||
{
|
||
bfd_signed_vma *local_got;
|
||
bfd_signed_vma *end_local_got;
|
||
char *local_tls_type;
|
||
bfd_size_type locsymcount;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
asection *srel;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
||
continue;
|
||
|
||
for (s = ibfd->sections; s != NULL; s = s->next)
|
||
{
|
||
struct elf32_sparc_dyn_relocs *p;
|
||
|
||
for (p = *((struct elf32_sparc_dyn_relocs **)
|
||
&elf_section_data (s)->local_dynrel);
|
||
p != NULL;
|
||
p = p->next)
|
||
{
|
||
if (!bfd_is_abs_section (p->sec)
|
||
&& bfd_is_abs_section (p->sec->output_section))
|
||
{
|
||
/* Input section has been discarded, either because
|
||
it is a copy of a linkonce section or due to
|
||
linker script /DISCARD/, so we'll be discarding
|
||
the relocs too. */
|
||
}
|
||
else if (p->count != 0)
|
||
{
|
||
srel = elf_section_data (p->sec)->sreloc;
|
||
srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
|
||
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
}
|
||
}
|
||
|
||
local_got = elf_local_got_refcounts (ibfd);
|
||
if (!local_got)
|
||
continue;
|
||
|
||
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
||
locsymcount = symtab_hdr->sh_info;
|
||
end_local_got = local_got + locsymcount;
|
||
local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
|
||
s = htab->sgot;
|
||
srel = htab->srelgot;
|
||
for (; local_got < end_local_got; ++local_got, ++local_tls_type)
|
||
{
|
||
if (*local_got > 0)
|
||
{
|
||
*local_got = s->_raw_size;
|
||
s->_raw_size += 4;
|
||
if (*local_tls_type == GOT_TLS_GD)
|
||
s->_raw_size += 4;
|
||
if (info->shared
|
||
|| *local_tls_type == GOT_TLS_GD
|
||
|| *local_tls_type == GOT_TLS_IE)
|
||
srel->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
*local_got = (bfd_vma) -1;
|
||
}
|
||
}
|
||
|
||
if (htab->tls_ldm_got.refcount > 0)
|
||
{
|
||
/* Allocate 2 got entries and 1 dynamic reloc for
|
||
R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
|
||
htab->tls_ldm_got.offset = htab->sgot->_raw_size;
|
||
htab->sgot->_raw_size += 8;
|
||
htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
htab->tls_ldm_got.offset = -1;
|
||
|
||
/* Allocate global sym .plt and .got entries, and space for global
|
||
sym dynamic relocs. */
|
||
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Make space for the trailing nop in .plt. */
|
||
if (htab->splt->_raw_size > 0)
|
||
htab->splt->_raw_size += 4;
|
||
|
||
/* If the .got section is more than 0x1000 bytes, we add
|
||
0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
|
||
bit relocations have a greater chance of working. */
|
||
if (htab->sgot->_raw_size >= 0x1000
|
||
&& elf_hash_table (info)->hgot->root.u.def.value == 0)
|
||
elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
|
||
}
|
||
|
||
/* The check_relocs and adjust_dynamic_symbol entry points have
|
||
determined the sizes of the various dynamic sections. Allocate
|
||
memory for them. */
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
const char *name;
|
||
bfd_boolean strip = FALSE;
|
||
|
||
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);
|
||
|
||
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 to handle .rela.bss and
|
||
.rel.plt. We must create it in
|
||
create_dynamic_sections, because it 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
|
||
{
|
||
/* 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 (s != htab->splt && s != htab->sgot)
|
||
{
|
||
/* 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. */
|
||
/* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
|
||
Unused entries should be reclaimed before the section's contents
|
||
are written out, but at the moment this does not happen. Thus in
|
||
order to prevent writing out garbage, we initialise the section's
|
||
contents to zero. */
|
||
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 elf32_sparc_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. */
|
||
#define add_dynamic_entry(TAG, VAL) \
|
||
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
|
||
|
||
if (info->executable)
|
||
{
|
||
if (!add_dynamic_entry (DT_DEBUG, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (htab->srelplt->_raw_size != 0)
|
||
{
|
||
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
||
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
||
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
||
|| !add_dynamic_entry (DT_JMPREL, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (!add_dynamic_entry (DT_RELA, 0)
|
||
|| !add_dynamic_entry (DT_RELASZ, 0)
|
||
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
|
||
return FALSE;
|
||
|
||
/* If any dynamic relocs apply to a read-only section,
|
||
then we need a DT_TEXTREL entry. */
|
||
if ((info->flags & DF_TEXTREL) == 0)
|
||
elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
|
||
(PTR) info);
|
||
|
||
if (info->flags & DF_TEXTREL)
|
||
{
|
||
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
||
return FALSE;
|
||
}
|
||
}
|
||
#undef add_dynamic_entry
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
struct elf32_sparc_section_data
|
||
{
|
||
struct bfd_elf_section_data elf;
|
||
unsigned int do_relax;
|
||
};
|
||
|
||
#define sec_do_relax(sec) \
|
||
((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_new_section_hook (abfd, sec)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
{
|
||
struct elf32_sparc_section_data *sdata;
|
||
bfd_size_type amt = sizeof (*sdata);
|
||
|
||
sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
|
||
if (sdata == NULL)
|
||
return FALSE;
|
||
sec->used_by_bfd = (PTR) sdata;
|
||
|
||
return _bfd_elf_new_section_hook (abfd, sec);
|
||
}
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_relax_section (abfd, section, link_info, again)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asection *section ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
|
||
bfd_boolean *again;
|
||
{
|
||
*again = FALSE;
|
||
sec_do_relax (section) = 1;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Return the base VMA address which should be subtracted from real addresses
|
||
when resolving @dtpoff relocation.
|
||
This is PT_TLS segment p_vaddr. */
|
||
|
||
static bfd_vma
|
||
dtpoff_base (info)
|
||
struct bfd_link_info *info;
|
||
{
|
||
/* If tls_segment is NULL, we should have signalled an error already. */
|
||
if (elf_hash_table (info)->tls_segment == NULL)
|
||
return 0;
|
||
return elf_hash_table (info)->tls_segment->start;
|
||
}
|
||
|
||
/* Return the relocation value for @tpoff relocation
|
||
if STT_TLS virtual address is ADDRESS. */
|
||
|
||
static bfd_vma
|
||
tpoff (info, address)
|
||
struct bfd_link_info *info;
|
||
bfd_vma address;
|
||
{
|
||
struct elf_link_tls_segment *tls_segment
|
||
= elf_hash_table (info)->tls_segment;
|
||
|
||
/* If tls_segment is NULL, we should have signalled an error already. */
|
||
if (tls_segment == NULL)
|
||
return 0;
|
||
return -(align_power (tls_segment->size, tls_segment->align)
|
||
+ tls_segment->start - address);
|
||
}
|
||
|
||
/* Relocate a SPARC ELF section. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
bfd *output_bfd;
|
||
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;
|
||
{
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_vma *local_got_offsets;
|
||
bfd_vma got_base;
|
||
asection *sreloc;
|
||
Elf_Internal_Rela *rel;
|
||
Elf_Internal_Rela *relend;
|
||
|
||
if (info->relocateable)
|
||
return TRUE;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
local_got_offsets = elf_local_got_offsets (input_bfd);
|
||
|
||
if (elf_hash_table (info)->hgot == NULL)
|
||
got_base = 0;
|
||
else
|
||
got_base = elf_hash_table (info)->hgot->root.u.def.value;
|
||
|
||
sreloc = elf_section_data (input_section)->sreloc;
|
||
|
||
rel = relocs;
|
||
relend = relocs + input_section->reloc_count;
|
||
for (; rel < relend; rel++)
|
||
{
|
||
int r_type, tls_type;
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
bfd_vma relocation, off;
|
||
bfd_reloc_status_type r;
|
||
bfd_boolean is_plt = FALSE;
|
||
bfd_boolean unresolved_reloc;
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
if (r_type == R_SPARC_GNU_VTINHERIT
|
||
|| r_type == R_SPARC_GNU_VTENTRY)
|
||
continue;
|
||
|
||
if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
|
||
/* This is a final link. */
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
unresolved_reloc = FALSE;
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections[r_symndx];
|
||
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
|
||
}
|
||
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;
|
||
|
||
relocation = 0;
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sec = h->root.u.def.section;
|
||
if (sec->output_section == NULL)
|
||
/* Set a flag that will be cleared later if we find a
|
||
relocation value for this symbol. output_section
|
||
is typically NULL for symbols satisfied by a shared
|
||
library. */
|
||
unresolved_reloc = TRUE;
|
||
else
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
;
|
||
else if (info->shared
|
||
&& !info->no_undefined
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
;
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset,
|
||
(!info->shared || info->no_undefined
|
||
|| ELF_ST_VISIBILITY (h->other)))))
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
/* Relocation is to the entry for this symbol in the global
|
||
offset table. */
|
||
if (htab->sgot == NULL)
|
||
abort ();
|
||
|
||
if (h != NULL)
|
||
{
|
||
bfd_boolean dyn;
|
||
|
||
off = h->got.offset;
|
||
BFD_ASSERT (off != (bfd_vma) -1);
|
||
dyn = elf_hash_table (info)->dynamic_sections_created;
|
||
|
||
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|
||
|| (info->shared
|
||
&& (info->symbolic
|
||
|| h->dynindx == -1
|
||
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
|
||
{
|
||
/* 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. 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,
|
||
htab->sgot->contents + off);
|
||
h->got.offset |= 1;
|
||
}
|
||
}
|
||
else
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
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 processed this entry. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
|
||
if (info->shared)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
|
||
/* We need to generate a R_SPARC_RELATIVE reloc
|
||
for the dynamic linker. */
|
||
s = htab->srelgot;
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
outrel.r_offset = (htab->sgot->output_section->vma
|
||
+ htab->sgot->output_offset
|
||
+ off);
|
||
outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
|
||
outrel.r_addend = relocation;
|
||
relocation = 0;
|
||
loc = s->contents;
|
||
loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
||
}
|
||
|
||
bfd_put_32 (output_bfd, relocation,
|
||
htab->sgot->contents + off);
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
}
|
||
relocation = htab->sgot->output_offset + off - got_base;
|
||
break;
|
||
|
||
case R_SPARC_PLT32:
|
||
if (h == NULL || h->plt.offset == (bfd_vma) -1)
|
||
{
|
||
r_type = R_SPARC_32;
|
||
goto r_sparc_plt32;
|
||
}
|
||
/* Fall through. */
|
||
case R_SPARC_WPLT30:
|
||
r_sparc_wplt30:
|
||
/* Relocation is to the entry for this symbol in the
|
||
procedure linkage table. */
|
||
|
||
/* The Solaris native assembler will generate a WPLT30 reloc
|
||
for a local symbol if you assemble a call from one
|
||
section to another when using -K pic. We treat it as
|
||
WDISP30. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
if (h->plt.offset == (bfd_vma) -1)
|
||
{
|
||
/* We didn't make a PLT entry for this symbol. This
|
||
happens when statically linking PIC code, or when
|
||
using -Bsymbolic. */
|
||
break;
|
||
}
|
||
|
||
if (htab->splt == NULL)
|
||
abort ();
|
||
|
||
relocation = (htab->splt->output_section->vma
|
||
+ htab->splt->output_offset
|
||
+ h->plt.offset);
|
||
unresolved_reloc = FALSE;
|
||
if (r_type == R_SPARC_PLT32)
|
||
{
|
||
r_type = R_SPARC_32;
|
||
is_plt = TRUE;
|
||
goto r_sparc_plt32;
|
||
}
|
||
break;
|
||
|
||
case R_SPARC_PC10:
|
||
case R_SPARC_PC22:
|
||
if (h != NULL
|
||
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
break;
|
||
/* Fall through. */
|
||
case R_SPARC_DISP8:
|
||
case R_SPARC_DISP16:
|
||
case R_SPARC_DISP32:
|
||
case R_SPARC_WDISP30:
|
||
case R_SPARC_WDISP22:
|
||
case R_SPARC_WDISP19:
|
||
case R_SPARC_WDISP16:
|
||
case R_SPARC_8:
|
||
case R_SPARC_16:
|
||
case R_SPARC_32:
|
||
case R_SPARC_HI22:
|
||
case R_SPARC_22:
|
||
case R_SPARC_13:
|
||
case R_SPARC_LO10:
|
||
case R_SPARC_UA16:
|
||
case R_SPARC_UA32:
|
||
r_sparc_plt32:
|
||
/* r_symndx will be zero only for relocs against symbols
|
||
from removed linkonce sections, or sections discarded by
|
||
a linker script. */
|
||
if (r_symndx == 0
|
||
|| (input_section->flags & SEC_ALLOC) == 0)
|
||
break;
|
||
|
||
if ((info->shared
|
||
&& (! howto->pc_relative
|
||
|| (h != NULL
|
||
&& h->dynindx != -1
|
||
&& (! info->symbolic
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
||
|| (!info->shared
|
||
&& h != NULL
|
||
&& h->dynindx != -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
||
&& (((h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
|| h->root.type == bfd_link_hash_undefweak
|
||
|| h->root.type == bfd_link_hash_undefined)))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
bfd_boolean skip, relocate = FALSE;
|
||
|
||
/* When generating a shared object, these relocations
|
||
are copied into the output file to be resolved at run
|
||
time. */
|
||
|
||
BFD_ASSERT (sreloc != NULL);
|
||
|
||
skip = FALSE;
|
||
|
||
outrel.r_offset =
|
||
_bfd_elf_section_offset (output_bfd, info, input_section,
|
||
rel->r_offset);
|
||
if (outrel.r_offset == (bfd_vma) -1)
|
||
skip = TRUE;
|
||
else if (outrel.r_offset == (bfd_vma) -2)
|
||
skip = TRUE, relocate = TRUE;
|
||
outrel.r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
|
||
/* Optimize unaligned reloc usage now that we know where
|
||
it finally resides. */
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_16:
|
||
if (outrel.r_offset & 1)
|
||
r_type = R_SPARC_UA16;
|
||
break;
|
||
case R_SPARC_UA16:
|
||
if (!(outrel.r_offset & 1))
|
||
r_type = R_SPARC_16;
|
||
break;
|
||
case R_SPARC_32:
|
||
if (outrel.r_offset & 3)
|
||
r_type = R_SPARC_UA32;
|
||
break;
|
||
case R_SPARC_UA32:
|
||
if (!(outrel.r_offset & 3))
|
||
r_type = R_SPARC_32;
|
||
break;
|
||
case R_SPARC_DISP8:
|
||
case R_SPARC_DISP16:
|
||
case R_SPARC_DISP32:
|
||
/* If the symbol is not dynamic, we should not keep
|
||
a dynamic relocation. But an .rela.* slot has been
|
||
allocated for it, output R_SPARC_NONE.
|
||
FIXME: Add code tracking needed dynamic relocs as
|
||
e.g. i386 has. */
|
||
if (h->dynindx == -1)
|
||
skip = TRUE, relocate = TRUE;
|
||
break;
|
||
}
|
||
|
||
if (skip)
|
||
memset (&outrel, 0, sizeof outrel);
|
||
/* h->dynindx may be -1 if the symbol was marked to
|
||
become local. */
|
||
else if (h != NULL && ! is_plt
|
||
&& ((! info->symbolic && h->dynindx != -1)
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|
||
{
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
||
outrel.r_addend = rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
if (r_type == R_SPARC_32)
|
||
{
|
||
outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
long indx;
|
||
|
||
if (is_plt)
|
||
sec = htab->splt;
|
||
else 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;
|
||
|
||
/* FIXME: we really should be able to link non-pic
|
||
shared libraries. */
|
||
if (indx == 0)
|
||
{
|
||
BFD_FAIL ();
|
||
(*_bfd_error_handler)
|
||
(_("%s: probably compiled without -fPIC?"),
|
||
bfd_archive_filename (input_bfd));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
outrel.r_info = ELF32_R_INFO (indx, r_type);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
}
|
||
|
||
loc = sreloc->contents;
|
||
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
||
|
||
/* This reloc will be computed at runtime, so there's no
|
||
need to do anything now. */
|
||
if (! relocate)
|
||
continue;
|
||
}
|
||
break;
|
||
|
||
case R_SPARC_TLS_GD_HI22:
|
||
if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
|
||
{
|
||
/* R_SPARC_REV32 used the same reloc number as
|
||
R_SPARC_TLS_GD_HI22. */
|
||
r_type = R_SPARC_REV32;
|
||
break;
|
||
}
|
||
/* Fall through */
|
||
|
||
case R_SPARC_TLS_GD_LO10:
|
||
case R_SPARC_TLS_IE_HI22:
|
||
case R_SPARC_TLS_IE_LO10:
|
||
r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
|
||
h == NULL);
|
||
tls_type = GOT_UNKNOWN;
|
||
if (h == NULL && local_got_offsets)
|
||
tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
|
||
else if (h != NULL)
|
||
{
|
||
tls_type = elf32_sparc_hash_entry(h)->tls_type;
|
||
if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
case R_SPARC_TLS_IE_HI22:
|
||
r_type = R_SPARC_TLS_LE_HIX22;
|
||
break;
|
||
default:
|
||
r_type = R_SPARC_TLS_LE_LOX10;
|
||
break;
|
||
}
|
||
}
|
||
if (tls_type == GOT_TLS_IE)
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
r_type = R_SPARC_TLS_IE_HI22;
|
||
break;
|
||
case R_SPARC_TLS_GD_LO10:
|
||
r_type = R_SPARC_TLS_IE_LO10;
|
||
break;
|
||
}
|
||
|
||
if (r_type == R_SPARC_TLS_LE_HIX22)
|
||
{
|
||
relocation = tpoff (info, relocation);
|
||
break;
|
||
}
|
||
if (r_type == R_SPARC_TLS_LE_LOX10)
|
||
{
|
||
/* Change add into xor. */
|
||
relocation = tpoff (info, relocation);
|
||
bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
|
||
contents + rel->r_offset)
|
||
| 0x80182000), contents + rel->r_offset);
|
||
break;
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
off = h->got.offset;
|
||
h->got.offset |= 1;
|
||
}
|
||
else
|
||
{
|
||
BFD_ASSERT (local_got_offsets != NULL);
|
||
off = local_got_offsets[r_symndx];
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
|
||
r_sparc_tlsldm:
|
||
if (htab->sgot == NULL)
|
||
abort ();
|
||
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
Elf32_External_Rela *loc;
|
||
int dr_type, indx;
|
||
|
||
if (htab->srelgot == NULL)
|
||
abort ();
|
||
|
||
bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
|
||
outrel.r_offset = (htab->sgot->output_section->vma
|
||
+ htab->sgot->output_offset + off);
|
||
indx = h && h->dynindx != -1 ? h->dynindx : 0;
|
||
if (r_type == R_SPARC_TLS_IE_HI22
|
||
|| r_type == R_SPARC_TLS_IE_LO10)
|
||
dr_type = R_SPARC_TLS_TPOFF32;
|
||
else
|
||
dr_type = R_SPARC_TLS_DTPMOD32;
|
||
if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
|
||
outrel.r_addend = relocation - dtpoff_base (info);
|
||
else
|
||
outrel.r_addend = 0;
|
||
outrel.r_info = ELF32_R_INFO (indx, dr_type);
|
||
loc = (Elf32_External_Rela *) htab->srelgot->contents;
|
||
loc += htab->srelgot->reloc_count++;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
||
(bfd_byte *) loc);
|
||
|
||
if (r_type == R_SPARC_TLS_GD_HI22
|
||
|| r_type == R_SPARC_TLS_GD_LO10)
|
||
{
|
||
if (indx == 0)
|
||
{
|
||
BFD_ASSERT (! unresolved_reloc);
|
||
bfd_put_32 (output_bfd,
|
||
relocation - dtpoff_base (info),
|
||
htab->sgot->contents + off + 4);
|
||
}
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, 0,
|
||
htab->sgot->contents + off + 4);
|
||
outrel.r_info = ELF32_R_INFO (indx,
|
||
R_SPARC_TLS_DTPOFF32);
|
||
outrel.r_offset += 4;
|
||
htab->srelgot->reloc_count++;
|
||
loc++;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
||
(bfd_byte *) loc);
|
||
}
|
||
}
|
||
else if (dr_type == R_SPARC_TLS_DTPMOD32)
|
||
{
|
||
bfd_put_32 (output_bfd, 0,
|
||
htab->sgot->contents + off + 4);
|
||
}
|
||
}
|
||
|
||
if (off >= (bfd_vma) -2)
|
||
abort ();
|
||
|
||
relocation = htab->sgot->output_offset + off - got_base;
|
||
unresolved_reloc = FALSE;
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
break;
|
||
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
if (! info->shared)
|
||
{
|
||
bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
off = htab->tls_ldm_got.offset;
|
||
htab->tls_ldm_got.offset |= 1;
|
||
goto r_sparc_tlsldm;
|
||
|
||
case R_SPARC_TLS_LDO_HIX22:
|
||
case R_SPARC_TLS_LDO_LOX10:
|
||
if (info->shared)
|
||
relocation -= dtpoff_base (info);
|
||
else
|
||
relocation = tpoff (info, relocation);
|
||
break;
|
||
|
||
case R_SPARC_TLS_LE_HIX22:
|
||
case R_SPARC_TLS_LE_LOX10:
|
||
if (info->shared)
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_boolean skip, relocate = FALSE;
|
||
|
||
BFD_ASSERT (sreloc != NULL);
|
||
skip = FALSE;
|
||
outrel.r_offset =
|
||
_bfd_elf_section_offset (output_bfd, info, input_section,
|
||
rel->r_offset);
|
||
if (outrel.r_offset == (bfd_vma) -1)
|
||
skip = TRUE;
|
||
else if (outrel.r_offset == (bfd_vma) -2)
|
||
skip = TRUE, relocate = TRUE;
|
||
outrel.r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
if (skip)
|
||
memset (&outrel, 0, sizeof outrel);
|
||
else
|
||
{
|
||
outrel.r_info = ELF32_R_INFO (0, r_type);
|
||
outrel.r_addend = relocation - dtpoff_base (info)
|
||
+ rel->r_addend;
|
||
}
|
||
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
||
(bfd_byte *) (((Elf32_External_Rela *)
|
||
sreloc->contents)
|
||
+ sreloc->reloc_count));
|
||
++sreloc->reloc_count;
|
||
continue;
|
||
}
|
||
relocation = tpoff (info, relocation);
|
||
break;
|
||
|
||
case R_SPARC_TLS_LDM_CALL:
|
||
if (! info->shared)
|
||
{
|
||
/* mov %g0, %o0 */
|
||
bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
/* Fall through */
|
||
|
||
case R_SPARC_TLS_GD_CALL:
|
||
tls_type = GOT_UNKNOWN;
|
||
if (h == NULL && local_got_offsets)
|
||
tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
|
||
else if (h != NULL)
|
||
tls_type = elf32_sparc_hash_entry(h)->tls_type;
|
||
if (! info->shared
|
||
|| (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
|
||
{
|
||
bfd_vma insn;
|
||
|
||
if (!info->shared && (h == NULL || h->dynindx == -1))
|
||
{
|
||
/* GD -> LE */
|
||
bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
|
||
/* GD -> IE */
|
||
if (rel + 1 < relend
|
||
&& ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
|
||
&& rel[1].r_offset == rel->r_offset + 4
|
||
&& ELF32_R_SYM (rel[1].r_info) == r_symndx
|
||
&& (((insn = bfd_get_32 (input_bfd,
|
||
contents + rel[1].r_offset))
|
||
>> 25) & 0x1f) == 8)
|
||
{
|
||
/* We have
|
||
call __tls_get_addr, %tgd_call(foo)
|
||
add %reg1, %reg2, %o0, %tgd_add(foo)
|
||
and change it into IE:
|
||
ld [%reg1 + %reg2], %o0, %tie_ld(foo)
|
||
add %g7, %o0, %o0, %tie_add(foo).
|
||
add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
|
||
ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
|
||
bfd_put_32 (output_bfd, insn | 0xc0000000,
|
||
contents + rel->r_offset);
|
||
bfd_put_32 (output_bfd, 0x9001c008,
|
||
contents + rel->r_offset + 4);
|
||
rel++;
|
||
continue;
|
||
}
|
||
|
||
bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
|
||
h = (struct elf_link_hash_entry *)
|
||
bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
|
||
FALSE, TRUE);
|
||
BFD_ASSERT (h != NULL);
|
||
r_type = R_SPARC_WPLT30;
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
goto r_sparc_wplt30;
|
||
|
||
case R_SPARC_TLS_GD_ADD:
|
||
tls_type = GOT_UNKNOWN;
|
||
if (h == NULL && local_got_offsets)
|
||
tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
|
||
else if (h != NULL)
|
||
tls_type = elf32_sparc_hash_entry(h)->tls_type;
|
||
if (! info->shared || tls_type == GOT_TLS_IE)
|
||
{
|
||
/* add %reg1, %reg2, %reg3, %tgd_add(foo)
|
||
changed into IE:
|
||
ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
|
||
or LE:
|
||
add %g7, %reg2, %reg3. */
|
||
bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
if ((h != NULL && h->dynindx != -1) || info->shared)
|
||
relocation = insn | 0xc0000000;
|
||
else
|
||
relocation = (insn & ~0x7c000) | 0x1c000;
|
||
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
|
||
}
|
||
continue;
|
||
|
||
case R_SPARC_TLS_LDM_ADD:
|
||
if (! info->shared)
|
||
bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
|
||
continue;
|
||
|
||
case R_SPARC_TLS_LDO_ADD:
|
||
if (! info->shared)
|
||
{
|
||
/* Change rs1 into %g7. */
|
||
bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
insn = (insn & ~0x7c000) | 0x1c000;
|
||
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
||
}
|
||
continue;
|
||
|
||
case R_SPARC_TLS_IE_LD:
|
||
case R_SPARC_TLS_IE_LDX:
|
||
if (! info->shared && (h == NULL || h->dynindx == -1))
|
||
{
|
||
bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
int rs2 = insn & 0x1f;
|
||
int rd = (insn >> 25) & 0x1f;
|
||
|
||
if (rs2 == rd)
|
||
relocation = SPARC_NOP;
|
||
else
|
||
relocation = 0x80100000 | (insn & 0x3e00001f);
|
||
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
|
||
}
|
||
continue;
|
||
|
||
case R_SPARC_TLS_IE_ADD:
|
||
/* Totally useless relocation. */
|
||
continue;
|
||
|
||
case R_SPARC_TLS_DTPOFF32:
|
||
relocation -= dtpoff_base (info);
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
||
because such sections are not SEC_ALLOC and thus ld.so will
|
||
not process them. */
|
||
if (unresolved_reloc
|
||
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
|
||
bfd_archive_filename (input_bfd),
|
||
bfd_get_section_name (input_bfd, input_section),
|
||
(long) rel->r_offset,
|
||
h->root.root.string);
|
||
|
||
r = bfd_reloc_continue;
|
||
if (r_type == R_SPARC_WDISP16)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
relocation -= (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
relocation -= rel->r_offset;
|
||
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
x |= ((((relocation >> 2) & 0xc000) << 6)
|
||
| ((relocation >> 2) & 0x3fff));
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
|
||
if ((bfd_signed_vma) relocation < - 0x40000
|
||
|| (bfd_signed_vma) relocation > 0x3ffff)
|
||
r = bfd_reloc_overflow;
|
||
else
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else if (r_type == R_SPARC_REV32)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation = relocation + rel->r_addend;
|
||
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
x = x + relocation;
|
||
bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else if (r_type == R_SPARC_TLS_LDO_HIX22
|
||
|| r_type == R_SPARC_TLS_LE_HIX22)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
relocation = relocation ^ 0xffffffff;
|
||
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else if (r_type == R_SPARC_TLS_LDO_LOX10
|
||
|| r_type == R_SPARC_TLS_LE_LOX10)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
relocation = (relocation & 0x3ff) | 0x1c00;
|
||
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
x = (x & ~(bfd_vma) 0x1fff) | relocation;
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
|
||
&& sec_do_relax (input_section)
|
||
&& rel->r_offset + 4 < input_section->_raw_size)
|
||
{
|
||
#define G0 0
|
||
#define O7 15
|
||
#define XCC (2 << 20)
|
||
#define COND(x) (((x)&0xf)<<25)
|
||
#define CONDA COND(0x8)
|
||
#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
|
||
#define INSN_BA (F2(0,2) | CONDA)
|
||
#define INSN_OR F3(2, 0x2, 0)
|
||
#define INSN_NOP F2(0,4)
|
||
|
||
bfd_vma x, y;
|
||
|
||
/* If the instruction is a call with either:
|
||
restore
|
||
arithmetic instruction with rd == %o7
|
||
where rs1 != %o7 and rs2 if it is register != %o7
|
||
then we can optimize if the call destination is near
|
||
by changing the call into a branch always. */
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
|
||
if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
|
||
{
|
||
if (((y & OP3(~0)) == OP3(0x3d) /* restore */
|
||
|| ((y & OP3(0x28)) == 0 /* arithmetic */
|
||
&& (y & RD(~0)) == RD(O7)))
|
||
&& (y & RS1(~0)) != RS1(O7)
|
||
&& ((y & F3I(~0))
|
||
|| (y & RS2(~0)) != RS2(O7)))
|
||
{
|
||
bfd_vma reloc;
|
||
|
||
reloc = relocation + rel->r_addend - rel->r_offset;
|
||
reloc -= (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
|
||
/* Ensure the reloc fits into simm22. */
|
||
if ((reloc & 3) == 0
|
||
&& ((reloc & ~(bfd_vma)0x7fffff) == 0
|
||
|| ((reloc | 0x7fffff) == ~(bfd_vma)0)))
|
||
{
|
||
reloc >>= 2;
|
||
|
||
/* Check whether it fits into simm19 on v9. */
|
||
if (((reloc & 0x3c0000) == 0
|
||
|| (reloc & 0x3c0000) == 0x3c0000)
|
||
&& (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
|
||
x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
|
||
else
|
||
x = INSN_BA | (reloc & 0x3fffff); /* ba */
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
r = bfd_reloc_ok;
|
||
if (rel->r_offset >= 4
|
||
&& (y & (0xffffffff ^ RS1(~0)))
|
||
== (INSN_OR | RD(O7) | RS2(G0)))
|
||
{
|
||
bfd_vma z;
|
||
unsigned int reg;
|
||
|
||
z = bfd_get_32 (input_bfd,
|
||
contents + rel->r_offset - 4);
|
||
if ((z & (0xffffffff ^ RD(~0)))
|
||
!= (INSN_OR | RS1(O7) | RS2(G0)))
|
||
break;
|
||
|
||
/* The sequence was
|
||
or %o7, %g0, %rN
|
||
call foo
|
||
or %rN, %g0, %o7
|
||
|
||
If call foo was replaced with ba, replace
|
||
or %rN, %g0, %o7 with nop. */
|
||
|
||
reg = (y & RS1(~0)) >> 14;
|
||
if (reg != ((z & RD(~0)) >> 25)
|
||
|| reg == G0 || reg == O7)
|
||
break;
|
||
|
||
bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
|
||
contents + rel->r_offset + 4);
|
||
}
|
||
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (r == bfd_reloc_continue)
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
switch (r)
|
||
{
|
||
default:
|
||
case bfd_reloc_outofrange:
|
||
abort ();
|
||
case bfd_reloc_overflow:
|
||
{
|
||
const char *name;
|
||
|
||
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)
|
||
return FALSE;
|
||
if (*name == '\0')
|
||
name = bfd_section_name (input_bfd, sec);
|
||
}
|
||
if (! ((*info->callbacks->reloc_overflow)
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset)))
|
||
return FALSE;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_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;
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
dynobj = htab->elf.dynobj;
|
||
|
||
if (h->plt.offset != (bfd_vma) -1)
|
||
{
|
||
asection *splt;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
/* This symbol has an entry in the procedure linkage table. Set
|
||
it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
splt = htab->splt;
|
||
srela = htab->srelplt;
|
||
BFD_ASSERT (splt != NULL && srela != NULL);
|
||
|
||
/* Fill in the entry in the procedure linkage table. */
|
||
bfd_put_32 (output_bfd,
|
||
PLT_ENTRY_WORD0 + h->plt.offset,
|
||
splt->contents + h->plt.offset);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD1
|
||
+ (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
|
||
splt->contents + h->plt.offset + 4);
|
||
bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
|
||
splt->contents + h->plt.offset + 8);
|
||
|
||
/* Fill in the entry in the .rela.plt section. */
|
||
rela.r_offset = (splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
|
||
rela.r_addend = 0;
|
||
loc = srela->contents;
|
||
loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
|
||
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;
|
||
/* 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;
|
||
}
|
||
}
|
||
|
||
if (h->got.offset != (bfd_vma) -1
|
||
&& elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
|
||
&& elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
|
||
{
|
||
asection *sgot;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
/* This symbol has an entry in the global offset table. Set it
|
||
up. */
|
||
|
||
sgot = htab->sgot;
|
||
srela = htab->srelgot;
|
||
BFD_ASSERT (sgot != NULL && srela != NULL);
|
||
|
||
rela.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ (h->got.offset &~ (bfd_vma) 1));
|
||
|
||
/* If this is a -Bsymbolic link, and the symbol is defined
|
||
locally, we just want to emit a RELATIVE reloc. Likewise if
|
||
the symbol was forced to be local because of a version file.
|
||
The entry in the global offset table will already have been
|
||
initialized in the relocate_section function. */
|
||
if (info->shared
|
||
&& (info->symbolic || h->dynindx == -1)
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
|
||
{
|
||
asection *sec = h->root.u.def.section;
|
||
rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
|
||
rela.r_addend = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
else
|
||
{
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0,
|
||
sgot->contents + (h->got.offset &~ (bfd_vma) 1));
|
||
loc = srela->contents;
|
||
loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
/* This symbols needs a copy reloc. Set it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
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_SPARC_COPY);
|
||
rela.r_addend = 0;
|
||
loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. */
|
||
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
||
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
|
||
|| strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_finish_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
struct elf32_sparc_link_hash_table *htab;
|
||
|
||
htab = elf32_sparc_hash_table (info);
|
||
dynobj = htab->elf.dynobj;
|
||
|
||
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;
|
||
const char *name;
|
||
bfd_boolean size;
|
||
|
||
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
case DT_PLTGOT: name = ".plt"; size = FALSE; break;
|
||
case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
|
||
case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
|
||
default: name = NULL; size = FALSE; break;
|
||
}
|
||
|
||
if (name != NULL)
|
||
{
|
||
asection *s;
|
||
|
||
s = bfd_get_section_by_name (output_bfd, name);
|
||
if (s == NULL)
|
||
dyn.d_un.d_val = 0;
|
||
else
|
||
{
|
||
if (! size)
|
||
dyn.d_un.d_ptr = s->vma;
|
||
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);
|
||
}
|
||
}
|
||
|
||
/* Clear the first four entries in the procedure linkage table,
|
||
and put a nop in the last four bytes. */
|
||
if (splt->_raw_size > 0)
|
||
{
|
||
memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
|
||
bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
|
||
splt->contents + splt->_raw_size - 4);
|
||
}
|
||
|
||
elf_section_data (splt->output_section)->this_hdr.sh_entsize =
|
||
PLT_ENTRY_SIZE;
|
||
}
|
||
|
||
/* Set the first entry in the global offset table to the address of
|
||
the dynamic section. */
|
||
if (htab->sgot && htab->sgot->_raw_size > 0)
|
||
{
|
||
if (sdyn == NULL)
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
|
||
else
|
||
bfd_put_32 (output_bfd,
|
||
sdyn->output_section->vma + sdyn->output_offset,
|
||
htab->sgot->contents);
|
||
}
|
||
|
||
if (htab->sgot)
|
||
elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Functions for dealing with the e_flags field.
|
||
|
||
We don't define set_private_flags or copy_private_bfd_data because
|
||
the only currently defined values are based on the bfd mach number,
|
||
so we use the latter instead and defer setting e_flags until the
|
||
file is written out. */
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
bfd_boolean error;
|
||
/* FIXME: This should not be static. */
|
||
static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return TRUE;
|
||
|
||
error = FALSE;
|
||
|
||
if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
|
||
{
|
||
error = TRUE;
|
||
(*_bfd_error_handler)
|
||
(_("%s: compiled for a 64 bit system and target is 32 bit"),
|
||
bfd_archive_filename (ibfd));
|
||
}
|
||
else if ((ibfd->flags & DYNAMIC) == 0)
|
||
{
|
||
if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
|
||
bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
|
||
}
|
||
|
||
if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
|
||
!= previous_ibfd_e_flags)
|
||
&& previous_ibfd_e_flags != (unsigned long) -1)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: linking little endian files with big endian files"),
|
||
bfd_archive_filename (ibfd));
|
||
error = TRUE;
|
||
}
|
||
previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
|
||
|
||
if (error)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the right machine number. */
|
||
|
||
static bfd_boolean
|
||
elf32_sparc_object_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
/* Allocate our special target data. */
|
||
struct elf32_sparc_obj_tdata *new_tdata;
|
||
bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
|
||
new_tdata = bfd_zalloc (abfd, amt);
|
||
if (new_tdata == NULL)
|
||
return FALSE;
|
||
new_tdata->root = *abfd->tdata.elf_obj_data;
|
||
abfd->tdata.any = new_tdata;
|
||
|
||
if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
|
||
{
|
||
if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusb);
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusa);
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plus);
|
||
else
|
||
return FALSE;
|
||
}
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_sparclite_le);
|
||
else
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
|
||
}
|
||
|
||
/* The final processing done just before writing out the object file.
|
||
We need to set the e_machine field appropriately. */
|
||
|
||
static void
|
||
elf32_sparc_final_write_processing (abfd, linker)
|
||
bfd *abfd;
|
||
bfd_boolean linker ATTRIBUTE_UNUSED;
|
||
{
|
||
switch (bfd_get_mach (abfd))
|
||
{
|
||
case bfd_mach_sparc :
|
||
break; /* nothing to do */
|
||
case bfd_mach_sparc_v8plus :
|
||
elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
|
||
elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
|
||
elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
|
||
break;
|
||
case bfd_mach_sparc_v8plusa :
|
||
elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
|
||
elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
|
||
elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
|
||
break;
|
||
case bfd_mach_sparc_v8plusb :
|
||
elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
|
||
elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
|
||
elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
|
||
| EF_SPARC_SUN_US3;
|
||
break;
|
||
case bfd_mach_sparc_sparclite_le :
|
||
elf_elfheader (abfd)->e_machine = EM_SPARC;
|
||
elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
|
||
break;
|
||
default :
|
||
abort ();
|
||
break;
|
||
}
|
||
}
|
||
|
||
static enum elf_reloc_type_class
|
||
elf32_sparc_reloc_type_class (rela)
|
||
const Elf_Internal_Rela *rela;
|
||
{
|
||
switch ((int) ELF32_R_TYPE (rela->r_info))
|
||
{
|
||
case R_SPARC_RELATIVE:
|
||
return reloc_class_relative;
|
||
case R_SPARC_JMP_SLOT:
|
||
return reloc_class_plt;
|
||
case R_SPARC_COPY:
|
||
return reloc_class_copy;
|
||
default:
|
||
return reloc_class_normal;
|
||
}
|
||
}
|
||
|
||
#define TARGET_BIG_SYM bfd_elf32_sparc_vec
|
||
#define TARGET_BIG_NAME "elf32-sparc"
|
||
#define ELF_ARCH bfd_arch_sparc
|
||
#define ELF_MACHINE_CODE EM_SPARC
|
||
#define ELF_MACHINE_ALT1 EM_SPARC32PLUS
|
||
#define ELF_MAXPAGESIZE 0x10000
|
||
|
||
#define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
|
||
#define bfd_elf32_bfd_link_hash_table_create \
|
||
elf32_sparc_link_hash_table_create
|
||
#define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
|
||
#define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
|
||
#define elf_info_to_howto elf32_sparc_info_to_howto
|
||
#define elf_backend_copy_indirect_symbol \
|
||
elf32_sparc_copy_indirect_symbol
|
||
#define elf_backend_create_dynamic_sections \
|
||
elf32_sparc_create_dynamic_sections
|
||
#define elf_backend_check_relocs elf32_sparc_check_relocs
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
elf32_sparc_adjust_dynamic_symbol
|
||
#define elf_backend_size_dynamic_sections \
|
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elf32_sparc_size_dynamic_sections
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#define elf_backend_relocate_section elf32_sparc_relocate_section
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#define elf_backend_finish_dynamic_symbol \
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elf32_sparc_finish_dynamic_symbol
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#define elf_backend_finish_dynamic_sections \
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elf32_sparc_finish_dynamic_sections
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#define bfd_elf32_bfd_merge_private_bfd_data \
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elf32_sparc_merge_private_bfd_data
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#define bfd_elf32_mkobject elf32_sparc_mkobject
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#define elf_backend_object_p elf32_sparc_object_p
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#define elf_backend_final_write_processing \
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elf32_sparc_final_write_processing
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#define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
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#define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
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#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
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#define elf_backend_can_gc_sections 1
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#define elf_backend_can_refcount 1
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#define elf_backend_want_got_plt 0
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#define elf_backend_plt_readonly 0
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#define elf_backend_want_plt_sym 1
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#define elf_backend_got_header_size 4
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#define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
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#define elf_backend_rela_normal 1
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#include "elf32-target.h"
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