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binutils-gdb/bfd/elf64-sparc.c

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/* SPARC-specific support for 64-bit ELF
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
/* This is defined if one wants to build upward compatible binaries
with the original sparc64-elf toolchain. The support is kept in for
now but is turned off by default. dje 970930 */
/*#define SPARC64_OLD_RELOCS*/
#include "elf/sparc.h"
#include "opcode/sparc.h"
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
#define MINUS_ONE (~ (bfd_vma) 0)
static reloc_howto_type *sparc64_elf_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void sparc64_elf_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static bfd_boolean sparc64_elf_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static bfd_boolean sparc64_elf_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean allocate_dynrelocs
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean readonly_dynrelocs
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean sparc64_elf_omit_section_dynsym
PARAMS ((bfd *, struct bfd_link_info *, asection *));
static bfd_boolean sparc64_elf_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean sparc64_elf_new_section_hook
PARAMS ((bfd *, asection *));
static bfd_boolean sparc64_elf_relax_section
PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
static bfd_vma dtpoff_base
PARAMS ((struct bfd_link_info *));
static bfd_vma tpoff
PARAMS ((struct bfd_link_info *, bfd_vma));
static bfd_boolean sparc64_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static bfd_boolean sparc64_elf_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
static bfd_boolean sparc64_elf_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean sparc64_elf_merge_private_bfd_data
PARAMS ((bfd *, bfd *));
static struct bfd_hash_entry *link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static struct bfd_link_hash_table *sparc64_elf_link_hash_table_create
PARAMS ((bfd *));
static bfd_boolean create_got_section
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean sparc64_elf_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static void sparc64_elf_copy_indirect_symbol
PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
struct elf_link_hash_entry *));
static int sparc64_elf_tls_transition
PARAMS ((struct bfd_link_info *, int, int));
static bfd_boolean sparc64_elf_mkobject
PARAMS ((bfd *));
static bfd_boolean sparc64_elf_object_p
PARAMS ((bfd *));
static enum elf_reloc_type_class sparc64_elf_reloc_type_class
PARAMS ((const Elf_Internal_Rela *));
static asection *sparc64_elf_gc_mark_hook
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *));
static bfd_boolean sparc64_elf_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static bfd_reloc_status_type init_insn_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *,
bfd *, bfd_vma *, bfd_vma *));
static int sparc64_plt_entry_build
PARAMS ((bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *));
static int sparc64_elf_get_symbol_type
PARAMS (( Elf_Internal_Sym *, int));
static bfd_boolean sparc64_elf_add_symbol_hook
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *));
static bfd_boolean sparc64_elf_output_arch_syms
PARAMS ((bfd *, struct bfd_link_info *, PTR,
bfd_boolean (*) (PTR, const char *, Elf_Internal_Sym *,
asection *, struct elf_link_hash_entry *)));
static void sparc64_elf_symbol_processing
PARAMS ((bfd *, asymbol *));
static bfd_boolean sparc64_elf_fake_sections
PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
static const char *sparc64_elf_print_symbol_all
PARAMS ((bfd *, PTR, asymbol *));
static long sparc64_elf_get_reloc_upper_bound
PARAMS ((bfd *, asection *));
static long sparc64_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd *));
static bfd_boolean sparc64_elf_slurp_one_reloc_table
PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, bfd_boolean));
static bfd_boolean sparc64_elf_slurp_reloc_table
PARAMS ((bfd *, asection *, asymbol **, bfd_boolean));
static long sparc64_elf_canonicalize_reloc
PARAMS ((bfd *, asection *, arelent **, asymbol **));
static long sparc64_elf_canonicalize_dynamic_reloc
PARAMS ((bfd *, arelent **, asymbol **));
static void sparc64_elf_write_relocs
PARAMS ((bfd *, asection *, PTR));
/* The relocation "howto" table. */
static bfd_reloc_status_type sparc_elf_notsup_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_wdisp16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_hix22_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_lox10_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static reloc_howto_type sparc64_elf_howto_table[] =
{
HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
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),
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),
HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
#ifndef SPARC64_OLD_RELOCS
HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
/* These aren't implemented yet. */
HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
#endif
HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
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),
HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
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),
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),
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),
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),
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),
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),
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),
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),
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_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,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)
};
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_64 },
{ 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_64_PCREL, R_SPARC_DISP64 },
{ 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_DISP64, R_SPARC_DISP64 },
{ 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 },
#ifndef SPARC64_OLD_RELOCS
{ BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
#endif
{ BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
{ BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
{ BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
{ BFD_RELOC_SPARC_H44, R_SPARC_H44 },
{ BFD_RELOC_SPARC_M44, R_SPARC_M44 },
{ BFD_RELOC_SPARC_L44, R_SPARC_L44 },
{ BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }
};
static reloc_howto_type *
sparc64_elf_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
{
if (sparc_reloc_map[i].bfd_reloc_val == code)
return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
}
return 0;
}
static void
sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std);
cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)];
}
struct sparc64_elf_section_data
{
struct bfd_elf_section_data elf;
unsigned int do_relax, reloc_count;
};
#define sec_do_relax(sec) \
((struct sparc64_elf_section_data *) elf_section_data (sec))->do_relax
#define canon_reloc_count(sec) \
((struct sparc64_elf_section_data *) elf_section_data (sec))->reloc_count
/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
section can represent up to two relocs, we must tell the user to allocate
more space. */
static long
sparc64_elf_get_reloc_upper_bound (abfd, sec)
bfd *abfd ATTRIBUTE_UNUSED;
asection *sec;
{
return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
}
static long
sparc64_elf_get_dynamic_reloc_upper_bound (abfd)
bfd *abfd;
{
return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2;
}
/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
them. We cannot use generic elf routines for this, because R_SPARC_OLO10
has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations
for the same location, R_SPARC_LO10 and R_SPARC_13. */
static bfd_boolean
sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic)
bfd *abfd;
asection *asect;
Elf_Internal_Shdr *rel_hdr;
asymbol **symbols;
bfd_boolean dynamic;
{
PTR allocated = NULL;
bfd_byte *native_relocs;
arelent *relent;
unsigned int i;
int entsize;
bfd_size_type count;
arelent *relents;
allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
if (allocated == NULL)
goto error_return;
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)
goto error_return;
native_relocs = (bfd_byte *) allocated;
relents = asect->relocation + canon_reloc_count (asect);
entsize = rel_hdr->sh_entsize;
BFD_ASSERT (entsize == sizeof (Elf64_External_Rela));
count = rel_hdr->sh_size / entsize;
for (i = 0, relent = relents; i < count;
i++, relent++, native_relocs += entsize)
{
Elf_Internal_Rela rela;
bfd_elf64_swap_reloca_in (abfd, native_relocs, &rela);
/* The address of an ELF reloc is section relative for an object
file, and absolute for an executable file or shared library.
The address of a normal BFD reloc is always section relative,
and the address of a dynamic reloc is absolute.. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
relent->address = rela.r_offset;
else
relent->address = rela.r_offset - asect->vma;
if (ELF64_R_SYM (rela.r_info) == 0)
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
else
{
asymbol **ps, *s;
ps = symbols + ELF64_R_SYM (rela.r_info) - 1;
s = *ps;
/* Canonicalize ELF section symbols. FIXME: Why? */
if ((s->flags & BSF_SECTION_SYM) == 0)
relent->sym_ptr_ptr = ps;
else
relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
}
relent->addend = rela.r_addend;
BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std);
if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10)
{
relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10];
relent[1].address = relent->address;
relent++;
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
relent->addend = ELF64_R_TYPE_DATA (rela.r_info);
relent->howto = &sparc64_elf_howto_table[R_SPARC_13];
}
else
relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)];
}
canon_reloc_count (asect) += relent - relents;
if (allocated != NULL)
free (allocated);
return TRUE;
error_return:
if (allocated != NULL)
free (allocated);
return FALSE;
}
/* Read in and swap the external relocs. */
static bfd_boolean
sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
bfd *abfd;
asection *asect;
asymbol **symbols;
bfd_boolean dynamic;
{
struct bfd_elf_section_data * const d = elf_section_data (asect);
Elf_Internal_Shdr *rel_hdr;
Elf_Internal_Shdr *rel_hdr2;
bfd_size_type amt;
if (asect->relocation != NULL)
return TRUE;
if (! dynamic)
{
if ((asect->flags & SEC_RELOC) == 0
|| asect->reloc_count == 0)
return TRUE;
rel_hdr = &d->rel_hdr;
rel_hdr2 = d->rel_hdr2;
BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
|| (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
}
else
{
/* Note that ASECT->RELOC_COUNT tends not to be accurate in this
case because relocations against this section may use the
dynamic symbol table, and in that case bfd_section_from_shdr
in elf.c does not update the RELOC_COUNT. */
if (asect->size == 0)
return TRUE;
rel_hdr = &d->this_hdr;
asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
rel_hdr2 = NULL;
}
amt = asect->reloc_count;
amt *= 2 * sizeof (arelent);
asect->relocation = (arelent *) bfd_alloc (abfd, amt);
if (asect->relocation == NULL)
return FALSE;
/* The sparc64_elf_slurp_one_reloc_table routine increments
canon_reloc_count. */
canon_reloc_count (asect) = 0;
if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols,
dynamic))
return FALSE;
if (rel_hdr2
&& !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols,
dynamic))
return FALSE;
return TRUE;
}
/* Canonicalize the relocs. */
static long
sparc64_elf_canonicalize_reloc (abfd, section, relptr, symbols)
bfd *abfd;
sec_ptr section;
arelent **relptr;
asymbol **symbols;
{
arelent *tblptr;
unsigned int i;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
return -1;
tblptr = section->relocation;
for (i = 0; i < canon_reloc_count (section); i++)
*relptr++ = tblptr++;
*relptr = NULL;
return canon_reloc_count (section);
}
/* Canonicalize the dynamic relocation entries. Note that we return
the dynamic relocations as a single block, although they are
actually associated with particular sections; the interface, which
was designed for SunOS style shared libraries, expects that there
is only one set of dynamic relocs. Any section that was actually
installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
the dynamic symbol table, is considered to be a dynamic reloc
section. */
static long
sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
bfd *abfd;
arelent **storage;
asymbol **syms;
{
asection *s;
long ret;
if (elf_dynsymtab (abfd) == 0)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
ret = 0;
for (s = abfd->sections; s != NULL; s = s->next)
{
if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
&& (elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
{
arelent *p;
long count, i;
if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, TRUE))
return -1;
count = canon_reloc_count (s);
p = s->relocation;
for (i = 0; i < count; i++)
*storage++ = p++;
ret += count;
}
}
*storage = NULL;
return ret;
}
/* Write out the relocs. */
static void
sparc64_elf_write_relocs (abfd, sec, data)
bfd *abfd;
asection *sec;
PTR data;
{
bfd_boolean *failedp = (bfd_boolean *) data;
Elf_Internal_Shdr *rela_hdr;
Elf64_External_Rela *outbound_relocas, *src_rela;
unsigned int idx, count;
asymbol *last_sym = 0;
int last_sym_idx = 0;
/* If we have already failed, don't do anything. */
if (*failedp)
return;
if ((sec->flags & SEC_RELOC) == 0)
return;
/* The linker backend writes the relocs out itself, and sets the
reloc_count field to zero to inhibit writing them here. Also,
sometimes the SEC_RELOC flag gets set even when there aren't any
relocs. */
if (sec->reloc_count == 0)
return;
/* We can combine two relocs that refer to the same address
into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
latter is R_SPARC_13 with no associated symbol. */
count = 0;
for (idx = 0; idx < sec->reloc_count; idx++)
{
bfd_vma addr;
++count;
addr = sec->orelocation[idx]->address;
if (sec->orelocation[idx]->howto->type == R_SPARC_LO10
&& idx < sec->reloc_count - 1)
{
arelent *r = sec->orelocation[idx + 1];
if (r->howto->type == R_SPARC_13
&& r->address == addr
&& bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
&& (*r->sym_ptr_ptr)->value == 0)
++idx;
}
}
rela_hdr = &elf_section_data (sec)->rel_hdr;
rela_hdr->sh_size = rela_hdr->sh_entsize * count;
rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
if (rela_hdr->contents == NULL)
{
*failedp = TRUE;
return;
}
/* Figure out whether the relocations are RELA or REL relocations. */
if (rela_hdr->sh_type != SHT_RELA)
abort ();
/* orelocation has the data, reloc_count has the count... */
outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents;
src_rela = outbound_relocas;
for (idx = 0; idx < sec->reloc_count; idx++)
{
Elf_Internal_Rela dst_rela;
arelent *ptr;
asymbol *sym;
int n;
ptr = sec->orelocation[idx];
/* The address of an ELF reloc is section relative for an object
file, and absolute for an executable file or shared library.
The address of a BFD reloc is always section relative. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
dst_rela.r_offset = ptr->address;
else
dst_rela.r_offset = ptr->address + sec->vma;
sym = *ptr->sym_ptr_ptr;
if (sym == last_sym)
n = last_sym_idx;
else if (bfd_is_abs_section (sym->section) && sym->value == 0)
n = STN_UNDEF;
else
{
last_sym = sym;
n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
if (n < 0)
{
*failedp = TRUE;
return;
}
last_sym_idx = n;
}
if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
&& (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
&& ! _bfd_elf_validate_reloc (abfd, ptr))
{
*failedp = TRUE;
return;
}
if (ptr->howto->type == R_SPARC_LO10
&& idx < sec->reloc_count - 1)
{
arelent *r = sec->orelocation[idx + 1];
if (r->howto->type == R_SPARC_13
&& r->address == ptr->address
&& bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
&& (*r->sym_ptr_ptr)->value == 0)
{
idx++;
dst_rela.r_info
= ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend,
R_SPARC_OLO10));
}
else
dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10);
}
else
dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type);
dst_rela.r_addend = ptr->addend;
bfd_elf64_swap_reloca_out (abfd, &dst_rela, (bfd_byte *) src_rela);
++src_rela;
}
}
/* 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 sparc64_elf_dyn_relocs
{
struct sparc64_elf_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 sparc64_elf_link_hash_entry
{
struct elf_link_hash_entry elf;
/* Track dynamic relocs copied for this symbol. */
struct sparc64_elf_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 sparc64_elf_hash_entry(ent) ((struct sparc64_elf_link_hash_entry *)(ent))
struct sparc64_elf_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 sparc64_elf_tdata(abfd) \
((struct sparc64_elf_obj_tdata *) (abfd)->tdata.any)
#define sparc64_elf_local_got_tls_type(abfd) \
(sparc64_elf_tdata (abfd)->local_got_tls_type)
static bfd_boolean
sparc64_elf_mkobject (abfd)
bfd *abfd;
{
bfd_size_type amt = sizeof (struct sparc64_elf_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
if (abfd->tdata.any == NULL)
return FALSE;
return TRUE;
}
/* Sparc64 ELF linker hash table. */
struct sparc64_elf_app_reg
{
unsigned char bind;
unsigned short shndx;
bfd *abfd;
char *name;
};
struct sparc64_elf_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;
struct sparc64_elf_app_reg app_regs [4];
};
/* Get the Sparc64 ELF linker hash table from a link_info structure. */
#define sparc64_elf_hash_table(p) \
((struct sparc64_elf_link_hash_table *) ((p)->hash))
/* Create an entry in an SPARC 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 sparc64_elf_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 sparc64_elf_link_hash_entry *eh;
eh = (struct sparc64_elf_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
}
return entry;
}
/* Create a SPARC64 ELF linker hash table. */
static struct bfd_link_hash_table *
sparc64_elf_link_hash_table_create (abfd)
bfd *abfd;
{
struct sparc64_elf_link_hash_table *ret;
bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table);
ret = (struct sparc64_elf_link_hash_table *) bfd_zmalloc (amt);
if (ret == NULL)
return NULL;
if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
{
free (ret);
return 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 sparc64_elf_link_hash_table *htab;
if (! _bfd_elf_create_got_section (dynobj, info))
return FALSE;
htab = sparc64_elf_hash_table (info);
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
BFD_ASSERT (htab->sgot != NULL);
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, 3))
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
sparc64_elf_create_dynamic_sections (dynobj, info)
bfd *dynobj;
struct bfd_link_info *info;
{
struct sparc64_elf_link_hash_table *htab;
htab = sparc64_elf_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
sparc64_elf_copy_indirect_symbol (bed, dir, ind)
const struct elf_backend_data *bed;
struct elf_link_hash_entry *dir, *ind;
{
struct sparc64_elf_link_hash_entry *edir, *eind;
edir = (struct sparc64_elf_link_hash_entry *) dir;
eind = (struct sparc64_elf_link_hash_entry *) ind;
if (eind->dyn_relocs != NULL)
{
if (edir->dyn_relocs != NULL)
{
struct sparc64_elf_dyn_relocs **pp;
struct sparc64_elf_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 sparc64_elf_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
sparc64_elf_tls_transition (info, r_type, is_local)
struct bfd_link_info *info;
int r_type;
int is_local;
{
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;
}
/* Utility for performing the standard initial work of an instruction
relocation.
*PRELOCATION will contain the relocated item.
*PINSN will contain the instruction from the input stream.
If the result is `bfd_reloc_other' the caller can continue with
performing the relocation. Otherwise it must stop and return the
value to its caller. */
static bfd_reloc_status_type
init_insn_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
prelocation,
pinsn)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
bfd_vma *prelocation;
bfd_vma *pinsn;
{
bfd_vma relocation;
reloc_howto_type *howto = reloc_entry->howto;
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! howto->partial_inplace
|| reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* This works because partial_inplace is FALSE. */
if (output_bfd != NULL)
return bfd_reloc_continue;
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
relocation = (symbol->value
+ symbol->section->output_section->vma
+ symbol->section->output_offset);
relocation += reloc_entry->addend;
if (howto->pc_relative)
{
relocation -= (input_section->output_section->vma
+ input_section->output_offset);
relocation -= reloc_entry->address;
}
*prelocation = relocation;
*pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
return bfd_reloc_other;
}
/* For unsupported relocs. */
static bfd_reloc_status_type
sparc_elf_notsup_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 insn;
bfd_reloc_status_type status;
status = init_insn_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, &relocation, &insn);
if (status != bfd_reloc_other)
return status;
insn &= ~ (bfd_vma) 0x303fff;
insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
bfd_put_32 (abfd, insn, (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;
bfd_reloc_status_type status;
status = init_insn_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, &relocation, &insn);
if (status != bfd_reloc_other)
return status;
relocation ^= MINUS_ONE;
insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
return bfd_reloc_overflow;
else
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;
bfd_reloc_status_type status;
status = init_insn_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, &relocation, &insn);
if (status != bfd_reloc_other)
return status;
insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
return bfd_reloc_ok;
}
/* PLT/GOT stuff */
/* Both the headers and the entries are icache aligned. */
#define PLT_ENTRY_SIZE 32
#define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE)
#define LARGE_PLT_THRESHOLD 32768
#define GOT_RESERVED_ENTRIES 1
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
#define SPARC_NOP 0x01000000
static int
sparc64_plt_entry_build (output_bfd, splt, offset, max, r_offset)
bfd *output_bfd;
asection *splt;
bfd_vma offset;
bfd_vma max;
bfd_vma *r_offset;
{
unsigned char *entry = splt->contents + offset;
const unsigned int nop = SPARC_NOP;
int index;
if (offset < (LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE))
{
unsigned int sethi, ba;
*r_offset = offset;
index = (offset / PLT_ENTRY_SIZE);
sethi = 0x03000000 | (index * PLT_ENTRY_SIZE);
ba = 0x30680000
| (((splt->contents + PLT_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
}
else
{
unsigned char *ptr;
unsigned int ldx;
int block, last_block, ofs, last_ofs, chunks_this_block;
const int insn_chunk_size = (6 * 4);
const int ptr_chunk_size = (1 * 8);
const int entries_per_block = 160;
const int block_size = entries_per_block * (insn_chunk_size
+ ptr_chunk_size);
/* Entries 32768 and higher are grouped into blocks of 160.
The blocks are further subdivided into 160 sequences of
6 instructions and 160 pointers. If a block does not require
the full 160 entries, let's say it requires N, then there
will be N sequences of 6 instructions and N pointers. */
offset -= (LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE);
max -= (LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE);
block = offset / block_size;
last_block = max / block_size;
if (block != last_block)
{
chunks_this_block = 160;
}
else
{
last_ofs = max % block_size;
chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
}
ofs = offset % block_size;
index = (LARGE_PLT_THRESHOLD +
(block * 160) +
(ofs / insn_chunk_size));
ptr = splt->contents
+ (LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE)
+ (block * block_size)
+ (chunks_this_block * insn_chunk_size)
+ (ofs / insn_chunk_size) * ptr_chunk_size;
*r_offset = (bfd_vma) (ptr - splt->contents);
ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
/* mov %o7,%g5
call .+8
nop
ldx [%o7+P],%g1
jmpl %o7+%g1,%g1
mov %g5,%o7 */
bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
}
return index - 4;
}
/* 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
sparc64_elf_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
{
struct sparc64_elf_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;
if (info->relocatable || !(sec->flags & SEC_ALLOC))
return TRUE;
htab = sparc64_elf_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 + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr);
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF64_R_SYM (rel->r_info);
r_type = ELF64_R_TYPE_ID (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
(*_bfd_error_handler) (_("%B: bad symbol index: %d"),
abfd, r_symndx);
return FALSE;
}
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
r_type = sparc64_elf_tls_transition (info, 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 = sparc64_elf_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;
sparc64_elf_local_got_tls_type (abfd)
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
}
local_got_refcounts[r_symndx] += 1;
old_tls_type = sparc64_elf_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)
(_("%B: `%s' accessed both as normal and thread local symbol"),
abfd, h ? h->root.root.string : "<local>");
return FALSE;
}
}
if (old_tls_type != tls_type)
{
if (h != NULL)
sparc64_elf_hash_entry (h)->tls_type = tls_type;
else
sparc64_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
if (htab->sgot == NULL)
{
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:
case R_SPARC_HIPLT22:
case R_SPARC_LOPLT10:
case R_SPARC_PCPLT32:
case R_SPARC_PCPLT22:
case R_SPARC_PCPLT10:
case R_SPARC_PLT64:
/* 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)
{
/* It does not make sense to have a procedure linkage
table entry for a local symbol. */
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
h->needs_plt = 1;
if (ELF64_R_TYPE_ID (rel->r_info) == R_SPARC_PLT32
|| ELF64_R_TYPE_ID (rel->r_info) == R_SPARC_PLT64)
goto r_sparc_plt32;
h->plt.refcount += 1;
break;
case R_SPARC_PC10:
case R_SPARC_PC22:
case R_SPARC_PC_HH22:
case R_SPARC_PC_HM10:
case R_SPARC_PC_LM22:
if (h != NULL)
h->non_got_ref = 1;
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_DISP64:
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_10:
case R_SPARC_11:
case R_SPARC_64:
case R_SPARC_OLO10:
case R_SPARC_HH22:
case R_SPARC_HM10:
case R_SPARC_LM22:
case R_SPARC_7:
case R_SPARC_5:
case R_SPARC_6:
case R_SPARC_HIX22:
case R_SPARC_LOX10:
case R_SPARC_H44:
case R_SPARC_M44:
case R_SPARC_L44:
case R_SPARC_UA64:
if (h != NULL)
h->non_got_ref = 1;
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
&& (! sparc64_elf_howto_table[r_type].pc_relative
|| (h != NULL
&& (! info->symbolic
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (!info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
|| !h->def_regular)))
{
struct sparc64_elf_dyn_relocs *p;
struct sparc64_elf_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, 3))
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 sparc64_elf_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 sparc64_elf_dyn_relocs **)
&elf_section_data (s)->local_dynrel);
}
p = *head;
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
p = ((struct sparc64_elf_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 (sparc64_elf_howto_table[r_type].pc_relative)
p->pc_count += 1;
}
break;
case R_SPARC_REGISTER:
/* Nothing to do. */
break;
default:
break;
}
}
return TRUE;
}
/* Hook called by the linker routine which adds symbols from an object
file. We use it for STT_REGISTER symbols. */
static bfd_boolean
sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd *abfd;
struct bfd_link_info *info;
Elf_Internal_Sym *sym;
const char **namep;
flagword *flagsp ATTRIBUTE_UNUSED;
asection **secp ATTRIBUTE_UNUSED;
bfd_vma *valp ATTRIBUTE_UNUSED;
{
static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER)
{
int reg;
struct sparc64_elf_app_reg *p;
reg = (int)sym->st_value;
switch (reg & ~1)
{
case 2: reg -= 2; break;
case 6: reg -= 4; break;
default:
(*_bfd_error_handler)
(_("%B: Only registers %%g[2367] can be declared using STT_REGISTER"),
abfd);
return FALSE;
}
if (info->hash->creator != abfd->xvec
|| (abfd->flags & DYNAMIC) != 0)
{
/* STT_REGISTER only works when linking an elf64_sparc object.
If STT_REGISTER comes from a dynamic object, don't put it into
the output bfd. The dynamic linker will recheck it. */
*namep = NULL;
return TRUE;
}
p = sparc64_elf_hash_table(info)->app_regs + reg;
if (p->name != NULL && strcmp (p->name, *namep))
{
(*_bfd_error_handler)
(_("Register %%g%d used incompatibly: %s in %B, previously %s in %B"),
abfd, p->abfd, (int) sym->st_value,
**namep ? *namep : "#scratch",
*p->name ? p->name : "#scratch");
return FALSE;
}
if (p->name == NULL)
{
if (**namep)
{
struct elf_link_hash_entry *h;
h = (struct elf_link_hash_entry *)
bfd_link_hash_lookup (info->hash, *namep, FALSE, FALSE, FALSE);
if (h != NULL)
{
unsigned char type = h->type;
if (type > STT_FUNC)
type = 0;
(*_bfd_error_handler)
(_("Symbol `%s' has differing types: REGISTER in %B, previously %s in %B"),
abfd, p->abfd, *namep, stt_types[type]);
return FALSE;
}
p->name = bfd_hash_allocate (&info->hash->table,
strlen (*namep) + 1);
if (!p->name)
return FALSE;
strcpy (p->name, *namep);
}
else
p->name = "";
p->bind = ELF_ST_BIND (sym->st_info);
p->abfd = abfd;
p->shndx = sym->st_shndx;
}
else
{
if (p->bind == STB_WEAK
&& ELF_ST_BIND (sym->st_info) == STB_GLOBAL)
{
p->bind = STB_GLOBAL;
p->abfd = abfd;
}
}
*namep = NULL;
return TRUE;
}
else if (*namep && **namep
&& info->hash->creator == abfd->xvec)
{
int i;
struct sparc64_elf_app_reg *p;
p = sparc64_elf_hash_table(info)->app_regs;
for (i = 0; i < 4; i++, p++)
if (p->name != NULL && ! strcmp (p->name, *namep))
{
unsigned char type = ELF_ST_TYPE (sym->st_info);
if (type > STT_FUNC)
type = 0;
(*_bfd_error_handler)
(_("Symbol `%s' has differing types: %s in %B, previously REGISTER in %B"),
abfd, p->abfd, *namep, stt_types[type]);
return FALSE;
}
}
return TRUE;
}
/* This function takes care of emitting STT_REGISTER symbols
which we cannot easily keep in the symbol hash table. */
static bfd_boolean
sparc64_elf_output_arch_syms (output_bfd, info, finfo, func)
bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
PTR finfo;
bfd_boolean (*func)
PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *));
{
int reg;
struct sparc64_elf_app_reg *app_regs =
sparc64_elf_hash_table(info)->app_regs;
Elf_Internal_Sym sym;
/* We arranged in size_dynamic_sections to put the STT_REGISTER entries
at the end of the dynlocal list, so they came at the end of the local
symbols in the symtab. Except that they aren't STB_LOCAL, so we need
to back up symtab->sh_info. */
if (elf_hash_table (info)->dynlocal)
{
bfd * dynobj = elf_hash_table (info)->dynobj;
asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym");
struct elf_link_local_dynamic_entry *e;
for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
if (e->input_indx == -1)
break;
if (e)
{
elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
= e->dynindx;
}
}
if (info->strip == strip_all)
return TRUE;
for (reg = 0; reg < 4; reg++)
if (app_regs [reg].name != NULL)
{
if (info->strip == strip_some
&& bfd_hash_lookup (info->keep_hash,
app_regs [reg].name,
FALSE, FALSE) == NULL)
continue;
sym.st_value = reg < 2 ? reg + 2 : reg + 4;
sym.st_size = 0;
sym.st_other = 0;
sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER);
sym.st_shndx = app_regs [reg].shndx;
if (! (*func) (finfo, app_regs [reg].name, &sym,
sym.st_shndx == SHN_ABS
? bfd_abs_section_ptr : bfd_und_section_ptr,
NULL))
return FALSE;
}
return TRUE;
}
static int
sparc64_elf_get_symbol_type (elf_sym, type)
Elf_Internal_Sym * elf_sym;
int type;
{
if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER)
return STT_REGISTER;
else
return type;
}
/* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
even in SHN_UNDEF section. */
static void
sparc64_elf_symbol_processing (abfd, asym)
bfd *abfd ATTRIBUTE_UNUSED;
asymbol *asym;
{
elf_symbol_type *elfsym;
elfsym = (elf_symbol_type *) asym;
if (elfsym->internal_elf_sym.st_info
== ELF_ST_INFO (STB_GLOBAL, STT_REGISTER))
{
asym->flags |= BSF_GLOBAL;
}
}
static asection *
sparc64_elf_gc_mark_hook (sec, info, rel, h, sym)
asection *sec;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel ATTRIBUTE_UNUSED;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
if (h != NULL)
{
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
sparc64_elf_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 = ELF64_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
struct sparc64_elf_link_hash_entry *eh;
struct sparc64_elf_dyn_relocs **pp;
struct sparc64_elf_dyn_relocs *p;
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;
eh = (struct sparc64_elf_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 = ELF64_R_TYPE_ID (rel->r_info);
r_type = sparc64_elf_tls_transition (info, r_type, h != NULL);
switch (r_type)
{
case R_SPARC_TLS_LDM_HI22:
case R_SPARC_TLS_LDM_LO10:
if (sparc64_elf_hash_table (info)->tls_ldm_got.refcount > 0)
sparc64_elf_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:
case R_SPARC_PC_HH22:
case R_SPARC_PC_HM10:
case R_SPARC_PC_LM22:
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_DISP64:
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:
case R_SPARC_10:
case R_SPARC_11:
case R_SPARC_64:
case R_SPARC_OLO10:
case R_SPARC_HH22:
case R_SPARC_HM10:
case R_SPARC_LM22:
case R_SPARC_7:
case R_SPARC_5:
case R_SPARC_6:
case R_SPARC_HIX22:
case R_SPARC_LOX10:
case R_SPARC_H44:
case R_SPARC_M44:
case R_SPARC_L44:
case R_SPARC_UA64:
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
sparc64_elf_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
struct sparc64_elf_link_hash_table *htab;
struct sparc64_elf_link_hash_entry * eh;
struct sparc64_elf_dyn_relocs *p;
asection *s;
unsigned int power_of_two;
htab = sparc64_elf_hash_table (info);
/* Make sure we know what is going on here. */
BFD_ASSERT (htab->elf.dynobj != NULL
&& (h->needs_plt
|| h->u.weakdef != NULL
|| (h->def_dynamic
&& h->ref_regular
&& !h->def_regular)));
/* 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->needs_plt
|| (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->def_dynamic
&& !h->ref_dynamic
&& 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->needs_plt = 0;
}
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->u.weakdef != NULL)
{
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.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->non_got_ref)
return TRUE;
eh = (struct sparc64_elf_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->non_got_ref = 0;
return TRUE;
}
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
object will contain position independent code, so all references
from the dynamic object to this symbol will go through the global
offset table. The dynamic linker will use the .dynsym entry to
determine the address it must put in the global offset table, so
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
/* 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->size += sizeof (Elf64_External_Rela);
h->needs_copy = 1;
}
/* We need to figure out the alignment required for this symbol. I
have no idea how ELF linkers handle this. 16-bytes is the size
of the largest type that requires hard alignment -- long double. */
power_of_two = bfd_log2 (h->size);
if (power_of_two > 4)
power_of_two = 4;
/* Apply the required alignment. */
s = htab->sdynbss;
s->size = BFD_ALIGN (s->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->size;
/* Increment the section size to make room for the symbol. */
s->size += h->size;
return TRUE;
}
/* 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 sparc64_elf_link_hash_table *htab;
struct sparc64_elf_link_hash_entry *eh;
struct sparc64_elf_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 = sparc64_elf_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->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
{
asection *s = htab->splt;
/* The first four bit in .plt is reserved. */
if (s->size == 0)
s->size = PLT_HEADER_SIZE;
/* The procedure linkage table size is bounded by the magnitude
of the offset we can describe in the entry. */
if (s->size >= (bfd_vma)1 << 32)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (s->size >= LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE)
{
bfd_vma off = s->size - LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE;
off = (off % (160 * PLT_ENTRY_SIZE)) / PLT_ENTRY_SIZE;
h->plt.offset = (s->size - (off * 8));
}
else
h->plt.offset = s->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->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
}
/* Make room for this entry. */
s->size += PLT_ENTRY_SIZE;
/* We also need to make an entry in the .rela.plt section. */
htab->srelplt->size += sizeof (Elf64_External_Rela);
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
/* 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
&& sparc64_elf_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 = sparc64_elf_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->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
s = htab->sgot;
h->got.offset = s->size;
s->size += 8;
/* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
if (tls_type == GOT_TLS_GD)
s->size += 8;
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->size += sizeof (Elf64_External_Rela);
else if (tls_type == GOT_TLS_GD)
htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
htab->srelgot->size += sizeof (Elf64_External_Rela);
}
else
h->got.offset = (bfd_vma) -1;
eh = (struct sparc64_elf_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->def_regular
&& (h->forced_local
|| info->symbolic))
{
struct sparc64_elf_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->non_got_ref
&& ((h->def_dynamic
&& !h->def_regular)
|| (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->forced_local)
{
if (! bfd_elf_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->size += p->count * sizeof (Elf64_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 sparc64_elf_link_hash_entry *eh;
struct sparc64_elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
eh = (struct sparc64_elf_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;
}
/* Return true if the dynamic symbol for a given section should be
omitted when creating a shared library. */
static bfd_boolean
sparc64_elf_omit_section_dynsym (bfd *output_bfd,
struct bfd_link_info *info,
asection *p)
{
/* We keep the .got section symbol so that explicit relocations
against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
can be turned into relocations against the .got symbol. */
if (strcmp (p->name, ".got") == 0)
return FALSE;
return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
}
/* Set the sizes of the dynamic sections. */
static bfd_boolean
sparc64_elf_size_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
struct sparc64_elf_link_hash_table *htab;
bfd *dynobj;
asection *s;
bfd *ibfd;
htab = sparc64_elf_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->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 sparc64_elf_dyn_relocs *p;
for (p = *((struct sparc64_elf_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->size += p->count * sizeof (Elf64_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 = sparc64_elf_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->size;
s->size += 8;
if (*local_tls_type == GOT_TLS_GD)
s->size += 8;
if (info->shared
|| *local_tls_type == GOT_TLS_GD
|| *local_tls_type == GOT_TLS_IE)
srel->size += sizeof (Elf64_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->size;
htab->sgot->size += (2 * 8);
htab->srelgot->size += sizeof (Elf64_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);
/* The 32-bit sparc BFD backend has a hack that, iff the .got
section is larger than 0x1000 bytes, it increments the
.got base by 0x1000 so that 13 bit relocations are more
likely to work.
On 64-bit we have to be more careful, since sethi+or will
not create a proper 64-bit sign extended negative value
for relocations to the first 0x1000 bytes of the .got area.
We could do this using sethi+xor tricks just like the
sparc backend of GCC does, in order to make this work at
some point. Just... not today. */
/* 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->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. Zero the memory
for the benefit of .rela.plt, which has 4 unused entries
at the beginning, and we don't want garbage. */
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
if (s->contents == NULL && s->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 sparc64_elf_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_elf_add_dynamic_entry (info, TAG, VAL)
int reg;
struct sparc64_elf_app_reg * app_regs;
struct elf_strtab_hash *dynstr;
struct elf_link_hash_table *eht = elf_hash_table (info);
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
}
if (htab->srelplt->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 (Elf64_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;
}
/* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
entries if needed. */
app_regs = sparc64_elf_hash_table (info)->app_regs;
dynstr = eht->dynstr;
for (reg = 0; reg < 4; reg++)
if (app_regs [reg].name != NULL)
{
struct elf_link_local_dynamic_entry *entry, *e;
if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
return FALSE;
entry = (struct elf_link_local_dynamic_entry *)
bfd_hash_allocate (&info->hash->table, sizeof (*entry));
if (entry == NULL)
return FALSE;
/* We cheat here a little bit: the symbol will not be local, so we
put it at the end of the dynlocal linked list. We will fix it
later on, as we have to fix other fields anyway. */
entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
entry->isym.st_size = 0;
if (*app_regs [reg].name != '\0')
entry->isym.st_name
= _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
else
entry->isym.st_name = 0;
entry->isym.st_other = 0;
entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
STT_REGISTER);
entry->isym.st_shndx = app_regs [reg].shndx;
entry->next = NULL;
entry->input_bfd = output_bfd;
entry->input_indx = -1;
if (eht->dynlocal == NULL)
eht->dynlocal = entry;
else
{
for (e = eht->dynlocal; e->next; e = e->next)
;
e->next = entry;
}
eht->dynsymcount++;
}
}
#undef add_dynamic_entry
return TRUE;
}
static bfd_boolean
sparc64_elf_new_section_hook (abfd, sec)
bfd *abfd;
asection *sec;
{
struct sparc64_elf_section_data *sdata;
bfd_size_type amt = sizeof (*sdata);
sdata = (struct sparc64_elf_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
sparc64_elf_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_sec is NULL, we should have signalled an error already. */
if (elf_hash_table (info)->tls_sec == NULL)
return 0;
return elf_hash_table (info)->tls_sec->vma;
}
/* 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_hash_table *htab = elf_hash_table (info);
/* If tls_sec is NULL, we should have signalled an error already. */
if (htab->tls_sec == NULL)
return 0;
return address - htab->tls_size - htab->tls_sec->vma;
}
/* Relocate a SPARC64 ELF section. */
static bfd_boolean
sparc64_elf_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 sparc64_elf_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->relocatable)
return TRUE;
htab = sparc64_elf_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 + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
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 = ELF64_R_TYPE_ID (rel->r_info);
if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
howto = sparc64_elf_howto_table + r_type;
/* This is a final link. */
r_symndx = ELF64_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
{
bfd_boolean warned;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
if (warned)
{
/* To avoid generating warning messages about truncated
relocations, set the relocation's address to be the same as
the start of this section. */
if (input_section->output_section != NULL)
relocation = input_section->output_section->vma;
else
relocation = 0;
}
}
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->shared, h)
|| (info->shared
&& (info->symbolic
|| h->dynindx == -1
|| h->forced_local)
&& h->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 8, 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_64 (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 8. 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 = ELF64_R_INFO (0, R_SPARC_RELATIVE);
outrel.r_addend = relocation;
relocation = 0;
loc = s->contents;
loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
}
bfd_put_64 (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:
case R_SPARC_PLT64:
if (h == NULL || h->plt.offset == (bfd_vma) -1)
{
r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
goto r_sparc_plt32;
}
/* Fall through. */
case R_SPARC_WPLT30:
case R_SPARC_HIPLT22:
case R_SPARC_LOPLT10:
case R_SPARC_PCPLT32:
case R_SPARC_PCPLT22:
case R_SPARC_PCPLT10:
r_sparc_wplt30:
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
BFD_ASSERT (h != NULL);
if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
happens when statically linking PIC code, or when
using -Bsymbolic. */
break;
}
relocation = (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_PLT64)
{
r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
is_plt = TRUE;
goto r_sparc_plt32;
}
break;
case R_SPARC_PC10:
case R_SPARC_PC22:
case R_SPARC_PC_HH22:
case R_SPARC_PC_HM10:
case R_SPARC_PC_LM22:
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_DISP64:
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_10:
case R_SPARC_11:
case R_SPARC_64:
case R_SPARC_OLO10:
case R_SPARC_HH22:
case R_SPARC_HM10:
case R_SPARC_LM22:
case R_SPARC_7:
case R_SPARC_5:
case R_SPARC_6:
case R_SPARC_HIX22:
case R_SPARC_LOX10:
case R_SPARC_H44:
case R_SPARC_M44:
case R_SPARC_L44:
case R_SPARC_UA64:
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
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& (! howto->pc_relative
|| (h != NULL
&& h->dynindx != -1
&& (! info->symbolic
|| !h->def_regular))))
|| (!info->shared
&& h != NULL
&& h->dynindx != -1
&& !h->non_got_ref
&& ((h->def_dynamic
&& !h->def_regular)
|| 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_64:
if (outrel.r_offset & 7)
r_type = R_SPARC_UA64;
break;
case R_SPARC_UA64:
if (!(outrel.r_offset & 7))
r_type = R_SPARC_64;
break;
case R_SPARC_DISP8:
case R_SPARC_DISP16:
case R_SPARC_DISP32:
case R_SPARC_DISP64:
/* 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->def_regular))
{
BFD_ASSERT (h->dynindx != -1);
outrel.r_info
= ELF64_R_INFO (h->dynindx,
ELF64_R_TYPE_INFO (
ELF64_R_TYPE_DATA (rel->r_info),
r_type));
outrel.r_addend = rel->r_addend;
}
else
{
if (r_type == R_SPARC_64)
{
outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
outrel.r_addend = relocation + rel->r_addend;
}
else
{
long indx;
if (is_plt)
sec = htab->splt;
if (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)
(_("%B: probably compiled without -fPIC?"),
input_bfd);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
}
outrel.r_info
= ELF64_R_INFO (indx,
ELF64_R_TYPE_INFO (
ELF64_R_TYPE_DATA (rel->r_info),
r_type));
outrel.r_addend = relocation + rel->r_addend;
}
}
loc = sreloc->contents;
loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
bfd_elf64_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:
case R_SPARC_TLS_GD_LO10:
case R_SPARC_TLS_IE_HI22:
case R_SPARC_TLS_IE_LO10:
r_type = sparc64_elf_tls_transition (info, r_type, h == NULL);
tls_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
tls_type = sparc64_elf_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
{
tls_type = sparc64_elf_hash_entry(h)->tls_type;
if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
switch (ELF64_R_TYPE_ID (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;
Elf64_External_Rela *loc;
int dr_type, indx;
if (htab->srelgot == NULL)
abort ();
bfd_put_64 (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_TPOFF64;
else
dr_type = R_SPARC_TLS_DTPMOD64;
if (dr_type == R_SPARC_TLS_TPOFF64 && indx == 0)
outrel.r_addend = relocation - dtpoff_base (info);
else
outrel.r_addend = 0;
outrel.r_info = ELF64_R_INFO (indx, dr_type);
loc = (Elf64_External_Rela *) htab->srelgot->contents;
loc += htab->srelgot->reloc_count++;
bfd_elf64_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_64 (output_bfd,
relocation - dtpoff_base (info),
htab->sgot->contents + off + 8);
}
else
{
bfd_put_64 (output_bfd, 0,
htab->sgot->contents + off + 8);
outrel.r_info = ELF64_R_INFO (indx,
R_SPARC_TLS_DTPOFF64);
outrel.r_offset += 8;
htab->srelgot->reloc_count++;
loc++;
bfd_elf64_swap_reloca_out (output_bfd, &outrel,
(bfd_byte *) loc);
}
}
else if (dr_type == R_SPARC_TLS_DTPMOD64)
{
bfd_put_64 (output_bfd, 0,
htab->sgot->contents + off + 8);
}
}
if (off >= (bfd_vma) -2)
abort ();
relocation = htab->sgot->output_offset + off - got_base;
unresolved_reloc = FALSE;
howto = sparc64_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);
break;
}
r_type = (r_type == R_SPARC_TLS_LDO_HIX22
? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
/* Fall through. */
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 = ELF64_R_INFO (0, r_type);
outrel.r_addend = relocation - dtpoff_base (info)
+ rel->r_addend;
}
bfd_elf64_swap_reloca_out (output_bfd, &outrel,
(bfd_byte *) (((Elf64_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 = sparc64_elf_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
tls_type = sparc64_elf_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
&& ELF64_R_TYPE_ID (rel[1].r_info) == R_SPARC_TLS_GD_ADD
&& rel[1].r_offset == rel->r_offset + 4
&& ELF64_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:
ldx [%reg1 + %reg2], %o0, %tie_ldx(foo)
add %g7, %o0, %o0, %tie_add(foo).
add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
bfd_put_32 (output_bfd, insn | 0xc0580000,
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 = sparc64_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 = sparc64_elf_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
tls_type = sparc64_elf_hash_entry(h)->tls_type;
if (! info->shared || tls_type == GOT_TLS_IE)
{
/* add %reg1, %reg2, %reg3, %tgd_add(foo)
changed into IE:
ldx [%reg1 + %reg2], %reg3, %tie_ldx(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 | 0xc0580000;
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_DTPOFF64:
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->def_dynamic))
(*_bfd_error_handler)
(_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
input_bfd,
input_section,
(long) rel->r_offset,
h->root.root.string);
r = bfd_reloc_continue;
if (r_type == R_SPARC_OLO10)
{
bfd_vma x;
relocation += rel->r_addend;
relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
r = bfd_check_overflow (howto->complain_on_overflow,
howto->bitsize, howto->rightshift,
bfd_arch_bits_per_address (input_bfd),
relocation);
}
else 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);
r = bfd_check_overflow (howto->complain_on_overflow,
howto->bitsize, howto->rightshift,
bfd_arch_bits_per_address (input_bfd),
relocation);
}
else if (r_type == R_SPARC_TLS_LDO_HIX22
|| r_type == R_SPARC_TLS_LE_HIX22)
{
bfd_vma x;
relocation += rel->r_addend;
if (r_type == R_SPARC_TLS_LE_HIX22)
relocation ^= MINUS_ONE;
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;
}
if (r_type == R_SPARC_TLS_LDO_LOX10
|| r_type == R_SPARC_TLS_LE_LOX10)
{
bfd_vma x;
relocation += rel->r_addend;
relocation &= 0x3ff;
if (r_type == R_SPARC_TLS_LE_LOX10)
relocation |= 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_HIX22)
{
bfd_vma x;
relocation += rel->r_addend;
relocation = relocation ^ MINUS_ONE;
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_check_overflow (howto->complain_on_overflow,
howto->bitsize, howto->rightshift,
bfd_arch_bits_per_address (input_bfd),
relocation);
}
else if (r_type == R_SPARC_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->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 branch 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. */
if ((reloc & 0x3c0000) == 0
|| (reloc & 0x3c0000) == 0x3c0000)
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 = NULL;
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, (h ? &h->root : NULL), 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
sparc64_elf_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 sparc64_elf_link_hash_table *htab;
htab = sparc64_elf_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;
bfd_vma r_offset;
int rela_index;
/* This symbol has an entry in the PLT. 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. */
rela_index = sparc64_plt_entry_build (output_bfd, splt, h->plt.offset,
splt->size, &r_offset);
/* Fill in the entry in the .rela.plt section. */
rela.r_offset = r_offset
+ (splt->output_section->vma + splt->output_offset);
if (h->plt.offset < (LARGE_PLT_THRESHOLD * PLT_ENTRY_SIZE))
{
rela.r_addend = 0;
}
else
{
rela.r_addend = -(h->plt.offset + 4)
-(splt->output_section->vma + splt->output_offset);
}
rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
/* Adjust for the first 4 reserved elements in the .plt section
when setting the offset in the .rela.plt section.
Sun forgot to read their own ABI and copied elf32-sparc behaviour,
thus .plt[4] has corresponding .rela.plt[0] and so on. */
loc = srela->contents;
loc += rela_index * sizeof (Elf64_External_Rela);
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
if (!h->def_regular)
{
/* 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->ref_regular_nonweak)
sym->st_value = 0;
}
}
if (h->got.offset != (bfd_vma) -1
&& sparc64_elf_hash_entry(h)->tls_type != GOT_TLS_GD
&& sparc64_elf_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 GOT. 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->def_regular)
{
asection *sec = h->root.u.def.section;
rela.r_info = ELF64_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 = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
rela.r_addend = 0;
}
bfd_put_64 (output_bfd, (bfd_vma) 0,
sgot->contents + (h->got.offset &~ (bfd_vma) 1));
loc = srela->contents;
loc += srela->reloc_count++ * sizeof (Elf64_External_Rela);
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
}
if (h->needs_copy)
{
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 = ELF64_R_INFO (h->dynindx, R_SPARC_COPY);
rela.r_addend = 0;
loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
bfd_elf64_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
sparc64_elf_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
bfd *dynobj;
int stt_regidx = -1;
asection *sdyn;
struct sparc64_elf_link_hash_table *htab;
htab = sparc64_elf_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;
Elf64_External_Dyn *dyncon, *dynconend;
splt = bfd_get_section_by_name (dynobj, ".plt");
BFD_ASSERT (splt != NULL && sdyn != NULL);
dyncon = (Elf64_External_Dyn *) sdyn->contents;
dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
const char *name;
bfd_boolean size;
bfd_elf64_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;
case DT_SPARC_REGISTER:
if (stt_regidx == -1)
{
stt_regidx =
_bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
if (stt_regidx == -1)
return FALSE;
}
dyn.d_un.d_val = stt_regidx++;
bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
/* fallthrough */
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
dyn.d_un.d_val = s->size;
}
bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
}
}
/* Initialize the contents of the .plt section. */
if (splt->size > 0)
memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
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->size > 0)
{
if (sdyn == NULL)
bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
else
bfd_put_64 (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 = 8;
return TRUE;
}
/* Functions for dealing with the e_flags field. */
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
sparc64_elf_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
bfd_boolean error;
flagword new_flags, old_flags;
int new_mm, old_mm;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return TRUE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (!elf_flags_init (obfd)) /* First call, no flags set */
{
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
else if (new_flags == old_flags) /* Compatible flags are ok */
;
else /* Incompatible flags */
{
error = FALSE;
#define EF_SPARC_ISA_EXTENSIONS \
(EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
if ((ibfd->flags & DYNAMIC) != 0)
{
/* We don't want dynamic objects memory ordering and
architecture to have any role. That's what dynamic linker
should do. */
new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS);
new_flags |= (old_flags
& (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS));
}
else
{
/* Choose the highest architecture requirements. */
old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS);
new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS);
if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3))
&& (old_flags & EF_SPARC_HAL_R1))
{
error = TRUE;
(*_bfd_error_handler)
(_("%B: linking UltraSPARC specific with HAL specific code"),
ibfd);
}
/* Choose the most restrictive memory ordering. */
old_mm = (old_flags & EF_SPARCV9_MM);
new_mm = (new_flags & EF_SPARCV9_MM);
old_flags &= ~EF_SPARCV9_MM;
new_flags &= ~EF_SPARCV9_MM;
if (new_mm < old_mm)
old_mm = new_mm;
old_flags |= old_mm;
new_flags |= old_mm;
}
/* Warn about any other mismatches */
if (new_flags != old_flags)
{
error = TRUE;
(*_bfd_error_handler)
(_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
ibfd, (long) new_flags, (long) old_flags);
}
elf_elfheader (obfd)->e_flags = old_flags;
if (error)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
}
return TRUE;
}
/* MARCO: Set the correct entry size for the .stab section. */
static bfd_boolean
sparc64_elf_fake_sections (abfd, hdr, sec)
bfd *abfd ATTRIBUTE_UNUSED;
Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED;
asection *sec;
{
const char *name;
name = bfd_get_section_name (abfd, sec);
if (strcmp (name, ".stab") == 0)
{
/* Even in the 64bit case the stab entries are only 12 bytes long. */
elf_section_data (sec)->this_hdr.sh_entsize = 12;
}
return TRUE;
}
/* Print a STT_REGISTER symbol to file FILE. */
static const char *
sparc64_elf_print_symbol_all (abfd, filep, symbol)
bfd *abfd ATTRIBUTE_UNUSED;
PTR filep;
asymbol *symbol;
{
FILE *file = (FILE *) filep;
int reg, type;
if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info)
!= STT_REGISTER)
return NULL;
reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
type = symbol->flags;
fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "",
((type & BSF_LOCAL)
? (type & BSF_GLOBAL) ? '!' : 'l'
: (type & BSF_GLOBAL) ? 'g' : ' '),
(type & BSF_WEAK) ? 'w' : ' ');
if (symbol->name == NULL || symbol->name [0] == '\0')
return "#scratch";
else
return symbol->name;
}
/* Set the right machine number for a SPARC64 ELF file. */
static bfd_boolean
sparc64_elf_object_p (abfd)
bfd *abfd;
{
unsigned long mach = bfd_mach_sparc_v9;
if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
mach = bfd_mach_sparc_v9b;
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
mach = bfd_mach_sparc_v9a;
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
}
static enum elf_reloc_type_class
sparc64_elf_reloc_type_class (rela)
const Elf_Internal_Rela *rela;
{
switch ((int) ELF64_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;
}
}
/* Return address for Ith PLT stub in section PLT, for relocation REL
or (bfd_vma) -1 if it should not be included. */
static bfd_vma
sparc64_elf_plt_sym_val (bfd_vma i, const asection *plt,
const arelent *rel ATTRIBUTE_UNUSED)
{
bfd_vma j;
i += PLT_HEADER_SIZE / PLT_ENTRY_SIZE;
if (i < LARGE_PLT_THRESHOLD)
return plt->vma + i * PLT_ENTRY_SIZE;
j = (i - LARGE_PLT_THRESHOLD) % 160;
i -= j;
return plt->vma + i * PLT_ENTRY_SIZE + j * 4 * 6;
}
/* Relocations in the 64 bit SPARC ELF ABI are more complex than in
standard ELF, because R_SPARC_OLO10 has secondary addend in
ELF64_R_TYPE_DATA field. This structure is used to redirect the
relocation handling routines. */
const struct elf_size_info sparc64_elf_size_info =
{
sizeof (Elf64_External_Ehdr),
sizeof (Elf64_External_Phdr),
sizeof (Elf64_External_Shdr),
sizeof (Elf64_External_Rel),
sizeof (Elf64_External_Rela),
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
4, /* hash-table entry size. */
/* Internal relocations per external relocations.
For link purposes we use just 1 internal per
1 external, for assembly and slurp symbol table
we use 2. */
1,
64, /* arch_size. */
3, /* log_file_align. */
ELFCLASS64,
EV_CURRENT,
bfd_elf64_write_out_phdrs,
bfd_elf64_write_shdrs_and_ehdr,
sparc64_elf_write_relocs,
bfd_elf64_swap_symbol_in,
bfd_elf64_swap_symbol_out,
sparc64_elf_slurp_reloc_table,
bfd_elf64_slurp_symbol_table,
bfd_elf64_swap_dyn_in,
bfd_elf64_swap_dyn_out,
bfd_elf64_swap_reloc_in,
bfd_elf64_swap_reloc_out,
bfd_elf64_swap_reloca_in,
bfd_elf64_swap_reloca_out
};
#define TARGET_BIG_SYM bfd_elf64_sparc_vec
#define TARGET_BIG_NAME "elf64-sparc"
#define ELF_ARCH bfd_arch_sparc
#define ELF_MAXPAGESIZE 0x100000
/* This is the official ABI value. */
#define ELF_MACHINE_CODE EM_SPARCV9
/* This is the value that we used before the ABI was released. */
#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
#define bfd_elf64_bfd_link_hash_table_create \
sparc64_elf_link_hash_table_create
#define elf_info_to_howto \
sparc64_elf_info_to_howto
#define elf_backend_copy_indirect_symbol \
sparc64_elf_copy_indirect_symbol
#define bfd_elf64_get_reloc_upper_bound \
sparc64_elf_get_reloc_upper_bound
#define bfd_elf64_get_dynamic_reloc_upper_bound \
sparc64_elf_get_dynamic_reloc_upper_bound
#define bfd_elf64_canonicalize_reloc \
sparc64_elf_canonicalize_reloc
#define bfd_elf64_canonicalize_dynamic_reloc \
sparc64_elf_canonicalize_dynamic_reloc
#define bfd_elf64_bfd_reloc_type_lookup \
sparc64_elf_reloc_type_lookup
#define bfd_elf64_bfd_relax_section \
sparc64_elf_relax_section
#define bfd_elf64_new_section_hook \
sparc64_elf_new_section_hook
#define elf_backend_create_dynamic_sections \
sparc64_elf_create_dynamic_sections
#define elf_backend_add_symbol_hook \
sparc64_elf_add_symbol_hook
#define elf_backend_get_symbol_type \
sparc64_elf_get_symbol_type
#define elf_backend_symbol_processing \
sparc64_elf_symbol_processing
#define elf_backend_check_relocs \
sparc64_elf_check_relocs
#define elf_backend_adjust_dynamic_symbol \
sparc64_elf_adjust_dynamic_symbol
#define elf_backend_omit_section_dynsym \
sparc64_elf_omit_section_dynsym
#define elf_backend_size_dynamic_sections \
sparc64_elf_size_dynamic_sections
#define elf_backend_relocate_section \
sparc64_elf_relocate_section
#define elf_backend_finish_dynamic_symbol \
sparc64_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
sparc64_elf_finish_dynamic_sections
#define elf_backend_print_symbol_all \
sparc64_elf_print_symbol_all
#define elf_backend_output_arch_syms \
sparc64_elf_output_arch_syms
#define bfd_elf64_bfd_merge_private_bfd_data \
sparc64_elf_merge_private_bfd_data
#define elf_backend_fake_sections \
sparc64_elf_fake_sections
#define elf_backend_plt_sym_val \
sparc64_elf_plt_sym_val
#define elf_backend_size_info \
sparc64_elf_size_info
#define bfd_elf64_mkobject \
sparc64_elf_mkobject
#define elf_backend_object_p \
sparc64_elf_object_p
#define elf_backend_gc_mark_hook \
sparc64_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook \
sparc64_elf_gc_sweep_hook
#define elf_backend_reloc_type_class \
sparc64_elf_reloc_type_class
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_want_got_plt 0
#define elf_backend_plt_readonly 0
#define elf_backend_want_plt_sym 1
#define elf_backend_got_header_size 8
#define elf_backend_rela_normal 1
/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
#define elf_backend_plt_alignment 8
#include "elf64-target.h"
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