4954 lines
152 KiB
C
4954 lines
152 KiB
C
/* SPARC-specific support for ELF
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Copyright (C) 2005-2022 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* This file handles functionality common to the different SPARC ABI's. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "libiberty.h"
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#include "elf-bfd.h"
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#include "elf/sparc.h"
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#include "opcode/sparc.h"
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#include "elfxx-sparc.h"
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#include "elf-vxworks.h"
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#include "objalloc.h"
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#include "hashtab.h"
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
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#define MINUS_ONE (~ (bfd_vma) 0)
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#define ABI_64_P(abfd) \
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(get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
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/* The relocation "howto" table. */
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/* Utility for performing the standard initial work of an instruction
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relocation.
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*PRELOCATION will contain the relocated item.
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*PINSN will contain the instruction from the input stream.
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If the result is `bfd_reloc_other' the caller can continue with
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performing the relocation. Otherwise it must stop and return the
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value to its caller. */
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static bfd_reloc_status_type
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init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
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void * data, asection *input_section, bfd *output_bfd,
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bfd_vma *prelocation, bfd_vma *pinsn)
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{
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bfd_vma relocation;
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reloc_howto_type *howto = reloc_entry->howto;
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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! howto->partial_inplace
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|| reloc_entry->addend == 0))
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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/* This works because partial_inplace is FALSE. */
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if (output_bfd != NULL)
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return bfd_reloc_continue;
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if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
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return bfd_reloc_outofrange;
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relocation = (symbol->value
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+ symbol->section->output_section->vma
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+ symbol->section->output_offset);
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relocation += reloc_entry->addend;
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if (howto->pc_relative)
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{
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relocation -= (input_section->output_section->vma
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+ input_section->output_offset);
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relocation -= reloc_entry->address;
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}
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*prelocation = relocation;
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*pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
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return bfd_reloc_other;
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}
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/* For unsupported relocs. */
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static bfd_reloc_status_type
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sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry ATTRIBUTE_UNUSED,
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asymbol *symbol ATTRIBUTE_UNUSED,
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void * data ATTRIBUTE_UNUSED,
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asection *input_section ATTRIBUTE_UNUSED,
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bfd *output_bfd ATTRIBUTE_UNUSED,
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char **error_message ATTRIBUTE_UNUSED)
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{
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return bfd_reloc_notsupported;
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}
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/* Handle the WDISP16 reloc. */
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static bfd_reloc_status_type
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sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
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void * data, asection *input_section, bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_vma relocation;
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bfd_vma insn;
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bfd_reloc_status_type status;
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status = init_insn_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, &relocation, &insn);
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if (status != bfd_reloc_other)
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return status;
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insn &= ~ (bfd_vma) 0x303fff;
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insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
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bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
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if ((bfd_signed_vma) relocation < - 0x40000
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|| (bfd_signed_vma) relocation > 0x3ffff)
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return bfd_reloc_overflow;
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else
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return bfd_reloc_ok;
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}
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/* Handle the WDISP10 reloc. */
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static bfd_reloc_status_type
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sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
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void * data, asection *input_section, bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_vma relocation;
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bfd_vma insn;
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bfd_reloc_status_type status;
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status = init_insn_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, &relocation, &insn);
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if (status != bfd_reloc_other)
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return status;
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insn &= ~ (bfd_vma) 0x181fe0;
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insn |= (((relocation >> 2) & 0x300) << 11)
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| (((relocation >> 2) & 0xff) << 5);
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bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
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if ((bfd_signed_vma) relocation < - 0x1000
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|| (bfd_signed_vma) relocation > 0xfff)
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return bfd_reloc_overflow;
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else
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return bfd_reloc_ok;
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}
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/* Handle the HIX22 reloc. */
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static bfd_reloc_status_type
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sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
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void * data, asection *input_section, bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_vma relocation;
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bfd_vma insn;
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bfd_reloc_status_type status;
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status = init_insn_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, &relocation, &insn);
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if (status != bfd_reloc_other)
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return status;
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relocation ^= MINUS_ONE;
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insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
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bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
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if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
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return bfd_reloc_overflow;
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else
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return bfd_reloc_ok;
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}
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/* Handle the LOX10 reloc. */
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static bfd_reloc_status_type
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sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
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void * data, asection *input_section, bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_vma relocation;
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bfd_vma insn;
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bfd_reloc_status_type status;
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status = init_insn_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, &relocation, &insn);
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if (status != bfd_reloc_other)
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return status;
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insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
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bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
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return bfd_reloc_ok;
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}
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static reloc_howto_type _bfd_sparc_elf_howto_table[] =
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{
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HOWTO(R_SPARC_NONE, 0,3, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
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HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
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HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
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HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
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HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
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HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
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HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0xffffffff,true),
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HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
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HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
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HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
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HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
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HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
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HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
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HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
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HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
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HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true),
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HOWTO(R_SPARC_PLT32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", false,0,0xffffffff,true),
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HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
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HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
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HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
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HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true),
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HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true),
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HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
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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),
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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),
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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),
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HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
|
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HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
|
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HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
|
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HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
|
||
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),
|
||
HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",false,0,0x003fffff, false),
|
||
HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",false,0,0x000003ff, false),
|
||
HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",false,0,0x003fffff, false),
|
||
HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",false,0,0x000003ff, false),
|
||
HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",false,0,0x00000000,true),
|
||
HOWTO(R_SPARC_H34,12,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",false,0,0x003fffff,false),
|
||
HOWTO(R_SPARC_SIZE32,0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",false,0,0xffffffff,true),
|
||
HOWTO(R_SPARC_SIZE64,0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",false,0,MINUS_ONE, true),
|
||
HOWTO(R_SPARC_WDISP10,2,2,10,true, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",false,0,0x00000000,true),
|
||
};
|
||
static reloc_howto_type sparc_jmp_irel_howto =
|
||
HOWTO(R_SPARC_JMP_IREL, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",false,0,0x00000000,true);
|
||
static reloc_howto_type sparc_irelative_howto =
|
||
HOWTO(R_SPARC_IRELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",false,0,0x00000000,true);
|
||
static reloc_howto_type sparc_vtinherit_howto =
|
||
HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false);
|
||
static reloc_howto_type sparc_vtentry_howto =
|
||
HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", false,0,0, false);
|
||
static reloc_howto_type sparc_rev32_howto =
|
||
HOWTO(R_SPARC_REV32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", false,0,0xffffffff,true);
|
||
|
||
reloc_howto_type *
|
||
_bfd_sparc_elf_reloc_type_lookup (bfd *abfd,
|
||
bfd_reloc_code_real_type code)
|
||
{
|
||
/* We explicitly handle each relocation type in the switch
|
||
instead of using a lookup table for efficiency. */
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_NONE:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
|
||
|
||
case BFD_RELOC_8:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_8];
|
||
|
||
case BFD_RELOC_16:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_16];
|
||
|
||
case BFD_RELOC_32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_32];
|
||
|
||
case BFD_RELOC_8_PCREL:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
|
||
|
||
case BFD_RELOC_16_PCREL:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
|
||
|
||
case BFD_RELOC_32_PCREL:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
|
||
|
||
case BFD_RELOC_32_PCREL_S2:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
|
||
|
||
case BFD_RELOC_SPARC_WDISP22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
|
||
|
||
case BFD_RELOC_HI22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
|
||
|
||
case BFD_RELOC_SPARC22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_22];
|
||
|
||
case BFD_RELOC_SPARC13:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_13];
|
||
|
||
case BFD_RELOC_LO10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
|
||
|
||
case BFD_RELOC_SPARC_GOT10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
|
||
|
||
case BFD_RELOC_SPARC_GOT13:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
|
||
|
||
case BFD_RELOC_SPARC_GOT22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
|
||
|
||
case BFD_RELOC_SPARC_PC10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
|
||
|
||
case BFD_RELOC_SPARC_PC22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
|
||
|
||
case BFD_RELOC_SPARC_WPLT30:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
|
||
|
||
case BFD_RELOC_SPARC_COPY:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
|
||
|
||
case BFD_RELOC_SPARC_GLOB_DAT:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
|
||
|
||
case BFD_RELOC_SPARC_JMP_SLOT:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
|
||
|
||
case BFD_RELOC_SPARC_RELATIVE:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
|
||
|
||
case BFD_RELOC_SPARC_UA32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
|
||
|
||
case BFD_RELOC_SPARC_PLT32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
|
||
|
||
case BFD_RELOC_SPARC_10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_10];
|
||
|
||
case BFD_RELOC_SPARC_11:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_11];
|
||
|
||
case BFD_RELOC_SPARC_64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_64];
|
||
|
||
case BFD_RELOC_SPARC_OLO10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
|
||
|
||
case BFD_RELOC_SPARC_HH22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
|
||
|
||
case BFD_RELOC_SPARC_HM10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
|
||
|
||
case BFD_RELOC_SPARC_LM22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
|
||
|
||
case BFD_RELOC_SPARC_PC_HH22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
|
||
|
||
case BFD_RELOC_SPARC_PC_HM10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
|
||
|
||
case BFD_RELOC_SPARC_PC_LM22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
|
||
|
||
case BFD_RELOC_SPARC_WDISP16:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
|
||
|
||
case BFD_RELOC_SPARC_WDISP19:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
|
||
|
||
case BFD_RELOC_SPARC_7:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_7];
|
||
|
||
case BFD_RELOC_SPARC_5:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_5];
|
||
|
||
case BFD_RELOC_SPARC_6:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_6];
|
||
|
||
case BFD_RELOC_SPARC_DISP64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
|
||
|
||
case BFD_RELOC_SPARC_PLT64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
|
||
|
||
case BFD_RELOC_SPARC_HIX22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
|
||
|
||
case BFD_RELOC_SPARC_LOX10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
|
||
|
||
case BFD_RELOC_SPARC_H44:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
|
||
|
||
case BFD_RELOC_SPARC_M44:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
|
||
|
||
case BFD_RELOC_SPARC_L44:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
|
||
|
||
case BFD_RELOC_SPARC_REGISTER:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
|
||
|
||
case BFD_RELOC_SPARC_UA64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
|
||
|
||
case BFD_RELOC_SPARC_UA16:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
|
||
|
||
case BFD_RELOC_SPARC_TLS_GD_HI22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
|
||
|
||
case BFD_RELOC_SPARC_TLS_GD_LO10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
|
||
|
||
case BFD_RELOC_SPARC_TLS_GD_ADD:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
|
||
|
||
case BFD_RELOC_SPARC_TLS_GD_CALL:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDM_HI22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDM_LO10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDM_ADD:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDM_CALL:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDO_HIX22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDO_LOX10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LDO_ADD:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
|
||
|
||
case BFD_RELOC_SPARC_TLS_IE_HI22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
|
||
|
||
case BFD_RELOC_SPARC_TLS_IE_LO10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
|
||
|
||
case BFD_RELOC_SPARC_TLS_IE_LD:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
|
||
|
||
case BFD_RELOC_SPARC_TLS_IE_LDX:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
|
||
|
||
case BFD_RELOC_SPARC_TLS_IE_ADD:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LE_HIX22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
|
||
|
||
case BFD_RELOC_SPARC_TLS_LE_LOX10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
|
||
|
||
case BFD_RELOC_SPARC_TLS_DTPMOD32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
|
||
|
||
case BFD_RELOC_SPARC_TLS_DTPMOD64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
|
||
|
||
case BFD_RELOC_SPARC_TLS_DTPOFF32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
|
||
|
||
case BFD_RELOC_SPARC_TLS_DTPOFF64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
|
||
|
||
case BFD_RELOC_SPARC_TLS_TPOFF32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
|
||
|
||
case BFD_RELOC_SPARC_TLS_TPOFF64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
|
||
|
||
case BFD_RELOC_SPARC_GOTDATA_HIX22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
|
||
|
||
case BFD_RELOC_SPARC_GOTDATA_LOX10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
|
||
|
||
case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
|
||
|
||
case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
|
||
|
||
case BFD_RELOC_SPARC_GOTDATA_OP:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
|
||
|
||
case BFD_RELOC_SPARC_H34:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
|
||
|
||
case BFD_RELOC_SPARC_SIZE32:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
|
||
|
||
case BFD_RELOC_SPARC_SIZE64:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
|
||
|
||
case BFD_RELOC_SPARC_WDISP10:
|
||
return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
|
||
|
||
case BFD_RELOC_SPARC_JMP_IREL:
|
||
return &sparc_jmp_irel_howto;
|
||
|
||
case BFD_RELOC_SPARC_IRELATIVE:
|
||
return &sparc_irelative_howto;
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
return &sparc_vtinherit_howto;
|
||
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
return &sparc_vtentry_howto;
|
||
|
||
case BFD_RELOC_SPARC_REV32:
|
||
return &sparc_rev32_howto;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
/* xgettext:c-format */
|
||
_bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
|
||
reloc_howto_type *
|
||
_bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
const char *r_name)
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
|
||
if (_bfd_sparc_elf_howto_table[i].name != NULL
|
||
&& strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
|
||
return &_bfd_sparc_elf_howto_table[i];
|
||
|
||
if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
|
||
return &sparc_vtinherit_howto;
|
||
if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
|
||
return &sparc_vtentry_howto;
|
||
if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
|
||
return &sparc_rev32_howto;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
reloc_howto_type *
|
||
_bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
|
||
unsigned int r_type)
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_JMP_IREL:
|
||
return &sparc_jmp_irel_howto;
|
||
|
||
case R_SPARC_IRELATIVE:
|
||
return &sparc_irelative_howto;
|
||
|
||
case R_SPARC_GNU_VTINHERIT:
|
||
return &sparc_vtinherit_howto;
|
||
|
||
case R_SPARC_GNU_VTENTRY:
|
||
return &sparc_vtentry_howto;
|
||
|
||
case R_SPARC_REV32:
|
||
return &sparc_rev32_howto;
|
||
|
||
default:
|
||
if (r_type >= (unsigned int) R_SPARC_max_std)
|
||
{
|
||
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
|
||
abfd, r_type);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
return &_bfd_sparc_elf_howto_table[r_type];
|
||
}
|
||
}
|
||
|
||
/* Both 32-bit and 64-bit sparc encode this in an identical manner,
|
||
so just take advantage of that. */
|
||
#define SPARC_ELF_R_TYPE(r_info) \
|
||
((r_info) & 0xff)
|
||
|
||
bool
|
||
_bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
|
||
Elf_Internal_Rela *dst)
|
||
{
|
||
unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
|
||
|
||
if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
/* The nop opcode we use. */
|
||
#define SPARC_NOP 0x01000000
|
||
|
||
#define SPARC_INSN_BYTES 4
|
||
|
||
/* Is an undefined weak symbol resolved to 0 ?
|
||
Reference to an undefined weak symbol is resolved to 0 when
|
||
building an executable if it isn't dynamic and
|
||
1. Has non-GOT/non-PLT relocations in text section.
|
||
Or
|
||
2. Has no GOT/PLT relocation. */
|
||
#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
|
||
((EH)->elf.root.type == bfd_link_hash_undefweak \
|
||
&& bfd_link_executable (INFO) \
|
||
&& (_bfd_sparc_elf_hash_table (INFO)->interp == NULL \
|
||
|| !(INFO)->dynamic_undefined_weak \
|
||
|| (EH)->has_non_got_reloc \
|
||
|| !(EH)->has_got_reloc))
|
||
|
||
/* SPARC ELF linker hash entry. */
|
||
|
||
struct _bfd_sparc_elf_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry elf;
|
||
|
||
#define GOT_UNKNOWN 0
|
||
#define GOT_NORMAL 1
|
||
#define GOT_TLS_GD 2
|
||
#define GOT_TLS_IE 3
|
||
unsigned char tls_type;
|
||
|
||
/* Symbol has GOT or PLT relocations. */
|
||
unsigned int has_got_reloc : 1;
|
||
|
||
/* Symbol has old-style, non-relaxable GOT relocations. */
|
||
unsigned int has_old_style_got_reloc : 1;
|
||
|
||
/* Symbol has non-GOT/non-PLT relocations in text sections. */
|
||
unsigned int has_non_got_reloc : 1;
|
||
|
||
};
|
||
|
||
#define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
|
||
|
||
struct _bfd_sparc_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. */
|
||
bool has_tlsgd;
|
||
};
|
||
|
||
#define _bfd_sparc_elf_tdata(abfd) \
|
||
((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
|
||
|
||
#define _bfd_sparc_elf_local_got_tls_type(abfd) \
|
||
(_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
|
||
|
||
#define is_sparc_elf(bfd) \
|
||
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
|
||
&& elf_tdata (bfd) != NULL \
|
||
&& elf_object_id (bfd) == SPARC_ELF_DATA)
|
||
|
||
bool
|
||
_bfd_sparc_elf_mkobject (bfd *abfd)
|
||
{
|
||
return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
|
||
SPARC_ELF_DATA);
|
||
}
|
||
|
||
static void
|
||
sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
|
||
{
|
||
bfd_put_32 (abfd, val, ptr);
|
||
}
|
||
|
||
static void
|
||
sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
|
||
{
|
||
bfd_put_64 (abfd, val, ptr);
|
||
}
|
||
|
||
static void
|
||
sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
|
||
{
|
||
const struct elf_backend_data *bed;
|
||
bfd_byte *loc;
|
||
|
||
bed = get_elf_backend_data (abfd);
|
||
BFD_ASSERT (s->reloc_count * bed->s->sizeof_rela < s->size);
|
||
loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
|
||
bed->s->swap_reloca_out (abfd, rel, loc);
|
||
}
|
||
|
||
static bfd_vma
|
||
sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
|
||
bfd_vma rel_index ATTRIBUTE_UNUSED,
|
||
bfd_vma type ATTRIBUTE_UNUSED)
|
||
{
|
||
return ELF64_R_INFO (rel_index,
|
||
(in_rel ?
|
||
ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
|
||
type) : type));
|
||
}
|
||
|
||
static bfd_vma
|
||
sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
|
||
bfd_vma rel_index, bfd_vma type)
|
||
{
|
||
return ELF32_R_INFO (rel_index, type);
|
||
}
|
||
|
||
static bfd_vma
|
||
sparc_elf_r_symndx_64 (bfd_vma r_info)
|
||
{
|
||
bfd_vma r_symndx = ELF32_R_SYM (r_info);
|
||
return (r_symndx >> 24);
|
||
}
|
||
|
||
static bfd_vma
|
||
sparc_elf_r_symndx_32 (bfd_vma r_info)
|
||
{
|
||
return ELF32_R_SYM (r_info);
|
||
}
|
||
|
||
/* PLT/GOT stuff */
|
||
|
||
#define PLT32_ENTRY_SIZE 12
|
||
#define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
|
||
|
||
/* The first four entries in a 32-bit procedure linkage table are reserved,
|
||
and the initial contents are unimportant (we zero them out).
|
||
Subsequent entries look like this. See the SVR4 ABI SPARC
|
||
supplement to see how this works. */
|
||
|
||
/* sethi %hi(.-.plt0),%g1. We fill in the address later. */
|
||
#define PLT32_ENTRY_WORD0 0x03000000
|
||
/* b,a .plt0. We fill in the offset later. */
|
||
#define PLT32_ENTRY_WORD1 0x30800000
|
||
/* nop. */
|
||
#define PLT32_ENTRY_WORD2 SPARC_NOP
|
||
|
||
static int
|
||
sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
|
||
bfd_vma max ATTRIBUTE_UNUSED,
|
||
bfd_vma *r_offset)
|
||
{
|
||
bfd_put_32 (output_bfd,
|
||
PLT32_ENTRY_WORD0 + offset,
|
||
splt->contents + offset);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT32_ENTRY_WORD1
|
||
+ (((- (offset + 4)) >> 2) & 0x3fffff)),
|
||
splt->contents + offset + 4);
|
||
bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
|
||
splt->contents + offset + 8);
|
||
|
||
*r_offset = offset;
|
||
|
||
return offset / PLT32_ENTRY_SIZE - 4;
|
||
}
|
||
|
||
/* Both the headers and the entries are icache aligned. */
|
||
#define PLT64_ENTRY_SIZE 32
|
||
#define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
|
||
#define PLT64_LARGE_THRESHOLD 32768
|
||
|
||
static int
|
||
sparc64_plt_entry_build (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 plt_index;
|
||
|
||
if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
|
||
{
|
||
unsigned int sethi, ba;
|
||
|
||
*r_offset = offset;
|
||
|
||
plt_index = (offset / PLT64_ENTRY_SIZE);
|
||
|
||
sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
|
||
ba = 0x30680000
|
||
| (((splt->contents + PLT64_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 -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
|
||
max -= (PLT64_LARGE_THRESHOLD * PLT64_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;
|
||
|
||
plt_index = (PLT64_LARGE_THRESHOLD +
|
||
(block * 160) +
|
||
(ofs / insn_chunk_size));
|
||
|
||
ptr = splt->contents
|
||
+ (PLT64_LARGE_THRESHOLD * PLT64_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 plt_index - 4;
|
||
}
|
||
|
||
/* The format of the first PLT entry in a VxWorks executable. */
|
||
static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
|
||
{
|
||
0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
|
||
0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
|
||
0xc4008000, /* ld [ %g2 ], %g2 */
|
||
0x81c08000, /* jmp %g2 */
|
||
0x01000000 /* nop */
|
||
};
|
||
|
||
/* The format of subsequent PLT entries. */
|
||
static const bfd_vma sparc_vxworks_exec_plt_entry[] =
|
||
{
|
||
0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
|
||
0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
|
||
0xc2004000, /* ld [ %g1 ], %g1 */
|
||
0x81c04000, /* jmp %g1 */
|
||
0x01000000, /* nop */
|
||
0x03000000, /* sethi %hi(f@pltindex), %g1 */
|
||
0x10800000, /* b _PLT_resolve */
|
||
0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
|
||
};
|
||
|
||
/* The format of the first PLT entry in a VxWorks shared object. */
|
||
static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
|
||
{
|
||
0xc405e008, /* ld [ %l7 + 8 ], %g2 */
|
||
0x81c08000, /* jmp %g2 */
|
||
0x01000000 /* nop */
|
||
};
|
||
|
||
/* The format of subsequent PLT entries. */
|
||
static const bfd_vma sparc_vxworks_shared_plt_entry[] =
|
||
{
|
||
0x03000000, /* sethi %hi(f@got), %g1 */
|
||
0x82106000, /* or %g1, %lo(f@got), %g1 */
|
||
0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
|
||
0x81c04000, /* jmp %g1 */
|
||
0x01000000, /* nop */
|
||
0x03000000, /* sethi %hi(f@pltindex), %g1 */
|
||
0x10800000, /* b _PLT_resolve */
|
||
0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
|
||
};
|
||
|
||
#define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
|
||
htab->put_word(bfd, val, ptr)
|
||
|
||
#define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
|
||
htab->r_info(in_rel, index, type)
|
||
|
||
#define SPARC_ELF_R_SYMNDX(htab, r_info) \
|
||
htab->r_symndx(r_info)
|
||
|
||
#define SPARC_ELF_WORD_BYTES(htab) \
|
||
htab->bytes_per_word
|
||
|
||
#define SPARC_ELF_RELA_BYTES(htab) \
|
||
htab->bytes_per_rela
|
||
|
||
#define SPARC_ELF_DTPOFF_RELOC(htab) \
|
||
htab->dtpoff_reloc
|
||
|
||
#define SPARC_ELF_DTPMOD_RELOC(htab) \
|
||
htab->dtpmod_reloc
|
||
|
||
#define SPARC_ELF_TPOFF_RELOC(htab) \
|
||
htab->tpoff_reloc
|
||
|
||
#define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
|
||
htab->build_plt_entry (obfd, splt, off, max, r_off)
|
||
|
||
/* Create an entry in an SPARC ELF linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
link_hash_newfunc (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 _bfd_sparc_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 _bfd_sparc_elf_link_hash_entry *eh;
|
||
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
|
||
eh->tls_type = GOT_UNKNOWN;
|
||
eh->has_got_reloc = 0;
|
||
eh->has_non_got_reloc = 0;
|
||
}
|
||
|
||
return entry;
|
||
}
|
||
|
||
/* The name of the dynamic interpreter. This is put in the .interp
|
||
section. */
|
||
|
||
#define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
||
#define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
|
||
|
||
/* Compute a hash of a local hash entry. We use elf_link_hash_entry
|
||
for local symbol so that we can handle local STT_GNU_IFUNC symbols
|
||
as global symbol. We reuse indx and dynstr_index for local symbol
|
||
hash since they aren't used by global symbols in this backend. */
|
||
|
||
static hashval_t
|
||
elf_sparc_local_htab_hash (const void *ptr)
|
||
{
|
||
struct elf_link_hash_entry *h
|
||
= (struct elf_link_hash_entry *) ptr;
|
||
return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
|
||
}
|
||
|
||
/* Compare local hash entries. */
|
||
|
||
static int
|
||
elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
|
||
{
|
||
struct elf_link_hash_entry *h1
|
||
= (struct elf_link_hash_entry *) ptr1;
|
||
struct elf_link_hash_entry *h2
|
||
= (struct elf_link_hash_entry *) ptr2;
|
||
|
||
return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
|
||
}
|
||
|
||
/* Find and/or create a hash entry for local symbol. */
|
||
|
||
static struct elf_link_hash_entry *
|
||
elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
|
||
bfd *abfd, const Elf_Internal_Rela *rel,
|
||
bool create)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_entry e, *ret;
|
||
asection *sec = abfd->sections;
|
||
unsigned long r_symndx;
|
||
hashval_t h;
|
||
void **slot;
|
||
|
||
r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
|
||
h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
|
||
|
||
e.elf.indx = sec->id;
|
||
e.elf.dynstr_index = r_symndx;
|
||
slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
|
||
create ? INSERT : NO_INSERT);
|
||
|
||
if (!slot)
|
||
return NULL;
|
||
|
||
if (*slot)
|
||
{
|
||
ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
|
||
return &ret->elf;
|
||
}
|
||
|
||
ret = (struct _bfd_sparc_elf_link_hash_entry *)
|
||
objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
|
||
sizeof (struct _bfd_sparc_elf_link_hash_entry));
|
||
if (ret)
|
||
{
|
||
memset (ret, 0, sizeof (*ret));
|
||
ret->elf.indx = sec->id;
|
||
ret->elf.dynstr_index = r_symndx;
|
||
ret->elf.dynindx = -1;
|
||
ret->elf.plt.offset = (bfd_vma) -1;
|
||
ret->elf.got.offset = (bfd_vma) -1;
|
||
*slot = ret;
|
||
}
|
||
return &ret->elf;
|
||
}
|
||
|
||
/* Destroy a SPARC ELF linker hash table. */
|
||
|
||
static void
|
||
_bfd_sparc_elf_link_hash_table_free (bfd *obfd)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab
|
||
= (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
|
||
|
||
if (htab->loc_hash_table)
|
||
htab_delete (htab->loc_hash_table);
|
||
if (htab->loc_hash_memory)
|
||
objalloc_free ((struct objalloc *) htab->loc_hash_memory);
|
||
_bfd_elf_link_hash_table_free (obfd);
|
||
}
|
||
|
||
/* Create a SPARC ELF linker hash table. */
|
||
|
||
struct bfd_link_hash_table *
|
||
_bfd_sparc_elf_link_hash_table_create (bfd *abfd)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *ret;
|
||
size_t amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
|
||
|
||
ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
|
||
if (ret == NULL)
|
||
return NULL;
|
||
|
||
if (ABI_64_P (abfd))
|
||
{
|
||
ret->put_word = sparc_put_word_64;
|
||
ret->r_info = sparc_elf_r_info_64;
|
||
ret->r_symndx = sparc_elf_r_symndx_64;
|
||
ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
|
||
ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
|
||
ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
|
||
ret->word_align_power = 3;
|
||
ret->align_power_max = 4;
|
||
ret->bytes_per_word = 8;
|
||
ret->bytes_per_rela = sizeof (Elf64_External_Rela);
|
||
ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
|
||
ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
|
||
|
||
ret->build_plt_entry = sparc64_plt_entry_build;
|
||
ret->plt_header_size = PLT64_HEADER_SIZE;
|
||
ret->plt_entry_size = PLT64_ENTRY_SIZE;
|
||
}
|
||
else
|
||
{
|
||
ret->put_word = sparc_put_word_32;
|
||
ret->r_info = sparc_elf_r_info_32;
|
||
ret->r_symndx = sparc_elf_r_symndx_32;
|
||
ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
|
||
ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
|
||
ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
|
||
ret->word_align_power = 2;
|
||
ret->align_power_max = 3;
|
||
ret->bytes_per_word = 4;
|
||
ret->bytes_per_rela = sizeof (Elf32_External_Rela);
|
||
ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
|
||
ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
|
||
|
||
ret->build_plt_entry = sparc32_plt_entry_build;
|
||
ret->plt_header_size = PLT32_HEADER_SIZE;
|
||
ret->plt_entry_size = PLT32_ENTRY_SIZE;
|
||
}
|
||
|
||
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
|
||
sizeof (struct _bfd_sparc_elf_link_hash_entry),
|
||
SPARC_ELF_DATA))
|
||
{
|
||
free (ret);
|
||
return NULL;
|
||
}
|
||
|
||
ret->loc_hash_table = htab_try_create (1024,
|
||
elf_sparc_local_htab_hash,
|
||
elf_sparc_local_htab_eq,
|
||
NULL);
|
||
ret->loc_hash_memory = objalloc_create ();
|
||
if (!ret->loc_hash_table || !ret->loc_hash_memory)
|
||
{
|
||
_bfd_sparc_elf_link_hash_table_free (abfd);
|
||
return NULL;
|
||
}
|
||
ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
|
||
|
||
return &ret->elf.root;
|
||
}
|
||
|
||
/* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
|
||
.rela.bss sections in DYNOBJ, and set up shortcuts to them in our
|
||
hash table. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
||
return false;
|
||
|
||
if (htab->elf.target_os == is_vxworks)
|
||
{
|
||
if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
|
||
return false;
|
||
if (bfd_link_pic (info))
|
||
{
|
||
htab->plt_header_size
|
||
= 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
|
||
htab->plt_entry_size
|
||
= 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
|
||
}
|
||
else
|
||
{
|
||
htab->plt_header_size
|
||
= 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
|
||
htab->plt_entry_size
|
||
= 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
|
||
}
|
||
}
|
||
|
||
if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss
|
||
|| (!bfd_link_pic (info) && !htab->elf.srelbss))
|
||
abort ();
|
||
|
||
return true;
|
||
}
|
||
|
||
static bool
|
||
create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
|
||
{
|
||
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
|
||
struct elf_link_hash_table *htab = elf_hash_table (info);
|
||
flagword flags, pltflags;
|
||
asection *s;
|
||
|
||
if (htab->irelifunc != NULL || htab->iplt != NULL)
|
||
return true;
|
||
|
||
flags = bed->dynamic_sec_flags;
|
||
pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
|
||
|
||
s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
|
||
if (s == NULL
|
||
|| !bfd_set_section_alignment (s, bed->plt_alignment))
|
||
return false;
|
||
htab->iplt = s;
|
||
|
||
s = bfd_make_section_with_flags (abfd, ".rela.iplt",
|
||
flags | SEC_READONLY);
|
||
if (s == NULL
|
||
|| !bfd_set_section_alignment (s, bed->s->log_file_align))
|
||
return false;
|
||
htab->irelplt = s;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
||
|
||
void
|
||
_bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *dir,
|
||
struct elf_link_hash_entry *ind)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
|
||
|
||
edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
|
||
eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
|
||
|
||
if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount <= 0)
|
||
{
|
||
edir->tls_type = eind->tls_type;
|
||
eind->tls_type = GOT_UNKNOWN;
|
||
}
|
||
|
||
/* Copy has_got_reloc and has_non_got_reloc. */
|
||
edir->has_got_reloc |= eind->has_got_reloc;
|
||
edir->has_non_got_reloc |= eind->has_non_got_reloc;
|
||
|
||
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
|
||
}
|
||
|
||
static int
|
||
sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
|
||
int r_type, int is_local)
|
||
{
|
||
if (! ABI_64_P (abfd)
|
||
&& r_type == R_SPARC_TLS_GD_HI22
|
||
&& ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
|
||
return R_SPARC_REV32;
|
||
|
||
if (!bfd_link_executable (info))
|
||
return r_type;
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
return is_local ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_IE_HI22;
|
||
case R_SPARC_TLS_GD_LO10:
|
||
return is_local ? R_SPARC_TLS_LE_LOX10 : R_SPARC_TLS_IE_LO10;
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
return R_SPARC_TLS_LE_HIX22;
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
return R_SPARC_TLS_LE_LOX10;
|
||
case R_SPARC_TLS_IE_HI22:
|
||
return is_local ? R_SPARC_TLS_LE_HIX22 : r_type;
|
||
case R_SPARC_TLS_IE_LO10:
|
||
return is_local ? R_SPARC_TLS_LE_LOX10 : r_type;
|
||
}
|
||
|
||
return r_type;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase, and
|
||
allocate space in the global offset table or procedure linkage
|
||
table. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
||
asection *sec, const Elf_Internal_Rela *relocs)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sreloc;
|
||
int num_relocs;
|
||
bool checked_tlsgd = false;
|
||
|
||
if (bfd_link_relocatable (info))
|
||
return true;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
symtab_hdr = &elf_symtab_hdr (abfd);
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
|
||
sreloc = NULL;
|
||
|
||
if (ABI_64_P (abfd))
|
||
num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
|
||
else
|
||
num_relocs = sec->reloc_count;
|
||
|
||
BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
|
||
|
||
if (htab->elf.dynobj == NULL)
|
||
htab->elf.dynobj = abfd;
|
||
if (!create_ifunc_sections (htab->elf.dynobj, info))
|
||
return false;
|
||
|
||
rel_end = relocs + num_relocs;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
unsigned int r_type;
|
||
unsigned int r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
struct _bfd_sparc_elf_link_hash_entry *eh;
|
||
Elf_Internal_Sym *isym;
|
||
|
||
r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
|
||
r_type = SPARC_ELF_R_TYPE (rel->r_info);
|
||
|
||
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
|
||
{
|
||
/* xgettext:c-format */
|
||
_bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
|
||
return false;
|
||
}
|
||
|
||
isym = NULL;
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
/* A local symbol. */
|
||
isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd,
|
||
r_symndx);
|
||
if (isym == NULL)
|
||
return false;
|
||
|
||
/* Check relocation against local STT_GNU_IFUNC symbol. */
|
||
if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
|
||
{
|
||
h = elf_sparc_get_local_sym_hash (htab, abfd, rel, true);
|
||
if (h == NULL)
|
||
return false;
|
||
|
||
/* Fake a STT_GNU_IFUNC symbol. */
|
||
h->type = STT_GNU_IFUNC;
|
||
h->def_regular = 1;
|
||
h->ref_regular = 1;
|
||
h->forced_local = 1;
|
||
h->root.type = bfd_link_hash_defined;
|
||
}
|
||
else
|
||
h = NULL;
|
||
}
|
||
else
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
}
|
||
|
||
if (h && h->type == STT_GNU_IFUNC && h->def_regular)
|
||
{
|
||
h->ref_regular = 1;
|
||
h->plt.refcount += 1;
|
||
}
|
||
|
||
/* Compatibility with old R_SPARC_REV32 reloc conflicting
|
||
with R_SPARC_TLS_GD_HI22. */
|
||
if (! ABI_64_P (abfd) && ! checked_tlsgd)
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_GD_HI22:
|
||
{
|
||
const Elf_Internal_Rela *relt;
|
||
|
||
for (relt = rel + 1; relt < rel_end; relt++)
|
||
if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
|
||
|| ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
|
||
|| ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
|
||
break;
|
||
checked_tlsgd = true;
|
||
_bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
|
||
}
|
||
break;
|
||
case R_SPARC_TLS_GD_LO10:
|
||
case R_SPARC_TLS_GD_ADD:
|
||
case R_SPARC_TLS_GD_CALL:
|
||
checked_tlsgd = true;
|
||
_bfd_sparc_elf_tdata (abfd)->has_tlsgd = true;
|
||
break;
|
||
}
|
||
|
||
r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
htab->tls_ldm_got.refcount += 1;
|
||
if (eh != NULL)
|
||
eh->has_got_reloc = 1;
|
||
break;
|
||
|
||
case R_SPARC_TLS_LE_HIX22:
|
||
case R_SPARC_TLS_LE_LOX10:
|
||
if (!bfd_link_executable (info))
|
||
goto r_sparc_plt32;
|
||
break;
|
||
|
||
case R_SPARC_TLS_IE_HI22:
|
||
case R_SPARC_TLS_IE_LO10:
|
||
if (!bfd_link_executable (info))
|
||
info->flags |= DF_STATIC_TLS;
|
||
/* Fall through */
|
||
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
case R_SPARC_GOTDATA_HIX22:
|
||
case R_SPARC_GOTDATA_LOX10:
|
||
case R_SPARC_GOTDATA_OP_HIX22:
|
||
case R_SPARC_GOTDATA_OP_LOX10:
|
||
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)
|
||
{
|
||
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;
|
||
default:
|
||
tls_type = GOT_NORMAL;
|
||
break;
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
h->got.refcount += 1;
|
||
old_tls_type = _bfd_sparc_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;
|
||
_bfd_sparc_elf_local_got_tls_type (abfd)
|
||
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
|
||
}
|
||
|
||
if (r_type != R_SPARC_GOTDATA_OP_HIX22
|
||
&& r_type != R_SPARC_GOTDATA_OP_LOX10)
|
||
local_got_refcounts[r_symndx] += 1;
|
||
|
||
old_tls_type
|
||
= _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
|
||
}
|
||
|
||
/* If a TLS symbol is accessed using IE at least once, there is no
|
||
point in using the dynamic model for it. */
|
||
if (old_tls_type != tls_type)
|
||
{
|
||
if (old_tls_type == GOT_UNKNOWN)
|
||
;
|
||
else if (old_tls_type == GOT_TLS_GD && tls_type == GOT_TLS_IE)
|
||
;
|
||
else if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
|
||
tls_type = old_tls_type;
|
||
else
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%pB: `%s' accessed both as normal and thread local symbol"),
|
||
abfd, h ? h->root.root.string : "<local>");
|
||
return false;
|
||
}
|
||
|
||
if (h != NULL)
|
||
_bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
|
||
else
|
||
_bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
|
||
}
|
||
}
|
||
|
||
if (!htab->elf.sgot
|
||
&& !_bfd_elf_create_got_section (htab->elf.dynobj, info))
|
||
return false;
|
||
|
||
if (eh != NULL)
|
||
{
|
||
eh->has_got_reloc = 1;
|
||
if (r_type == R_SPARC_GOT10
|
||
|| r_type == R_SPARC_GOT13
|
||
|| r_type == R_SPARC_GOT22)
|
||
eh->has_old_style_got_reloc = 1;
|
||
}
|
||
break;
|
||
|
||
case R_SPARC_TLS_GD_CALL:
|
||
case R_SPARC_TLS_LDM_CALL:
|
||
if (bfd_link_executable (info))
|
||
break;
|
||
|
||
/* Essentially R_SPARC_WPLT30 relocs against __tls_get_addr. */
|
||
h = (struct elf_link_hash_entry *)
|
||
bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
|
||
false, true);
|
||
BFD_ASSERT (h != NULL);
|
||
/* Fall through */
|
||
|
||
case R_SPARC_WPLT30:
|
||
case R_SPARC_PLT32:
|
||
case R_SPARC_PLT64:
|
||
case R_SPARC_HIPLT22:
|
||
case R_SPARC_LOPLT10:
|
||
case R_SPARC_PCPLT32:
|
||
case R_SPARC_PCPLT22:
|
||
case R_SPARC_PCPLT10:
|
||
/* 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)
|
||
{
|
||
if (! ABI_64_P (abfd))
|
||
{
|
||
/* The Solaris native assembler will generate a WPLT30
|
||
reloc for a local symbol if you assemble a call from
|
||
one section to another when using -K pic. We treat
|
||
it as WDISP30. */
|
||
if (r_type == R_SPARC_PLT32)
|
||
goto r_sparc_plt32;
|
||
break;
|
||
}
|
||
/* PR 7027: We need similar behaviour for 64-bit binaries. */
|
||
else if (r_type == R_SPARC_WPLT30)
|
||
break;
|
||
|
||
/* 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 (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
|
||
goto r_sparc_plt32;
|
||
|
||
h->plt.refcount += 1;
|
||
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
|
||
eh->has_got_reloc = 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_WDISP10:
|
||
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_H34:
|
||
case R_SPARC_UA64:
|
||
if (h != NULL)
|
||
h->non_got_ref = 1;
|
||
|
||
if (eh != NULL && (sec->flags & SEC_CODE) != 0)
|
||
eh->has_non_got_reloc = 1;
|
||
|
||
r_sparc_plt32:
|
||
if (h != NULL && !bfd_link_pic (info))
|
||
{
|
||
/* 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 ((bfd_link_pic (info)
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& (! _bfd_sparc_elf_howto_table[r_type].pc_relative
|
||
|| (h != NULL
|
||
&& (! SYMBOLIC_BIND (info, h)
|
||
|| h->root.type == bfd_link_hash_defweak
|
||
|| !h->def_regular))))
|
||
|| (!bfd_link_pic (info)
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& h != NULL
|
||
&& (h->root.type == bfd_link_hash_defweak
|
||
|| !h->def_regular))
|
||
|| (!bfd_link_pic (info)
|
||
&& h != NULL
|
||
&& h->type == STT_GNU_IFUNC))
|
||
{
|
||
struct elf_dyn_relocs *p;
|
||
struct 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)
|
||
{
|
||
sreloc = _bfd_elf_make_dynamic_reloc_section
|
||
(sec, htab->elf.dynobj, htab->word_align_power,
|
||
abfd, /*rela?*/ true);
|
||
|
||
if (sreloc == NULL)
|
||
return false;
|
||
}
|
||
|
||
/* If this is a global symbol, we count the number of
|
||
relocations we need for this symbol. */
|
||
if (h != NULL)
|
||
head = &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;
|
||
void *vpp;
|
||
|
||
BFD_ASSERT (isym != NULL);
|
||
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
||
if (s == NULL)
|
||
s = sec;
|
||
|
||
vpp = &elf_section_data (s)->local_dynrel;
|
||
head = (struct elf_dyn_relocs **) vpp;
|
||
}
|
||
|
||
p = *head;
|
||
if (p == NULL || p->sec != sec)
|
||
{
|
||
size_t amt = sizeof *p;
|
||
p = ((struct 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 (_bfd_sparc_elf_howto_table[r_type].pc_relative)
|
||
p->pc_count += 1;
|
||
}
|
||
|
||
break;
|
||
|
||
case R_SPARC_GNU_VTINHERIT:
|
||
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return false;
|
||
break;
|
||
|
||
case R_SPARC_GNU_VTENTRY:
|
||
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return false;
|
||
break;
|
||
|
||
case R_SPARC_REGISTER:
|
||
/* Nothing to do. */
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
asection *
|
||
_bfd_sparc_elf_gc_mark_hook (asection *sec,
|
||
struct bfd_link_info *info,
|
||
Elf_Internal_Rela *rel,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
if (h != NULL)
|
||
switch (SPARC_ELF_R_TYPE (rel->r_info))
|
||
{
|
||
case R_SPARC_GNU_VTINHERIT:
|
||
case R_SPARC_GNU_VTENTRY:
|
||
return NULL;
|
||
}
|
||
|
||
if (!bfd_link_executable (info))
|
||
{
|
||
switch (SPARC_ELF_R_TYPE (rel->r_info))
|
||
{
|
||
case R_SPARC_TLS_GD_CALL:
|
||
case R_SPARC_TLS_LDM_CALL:
|
||
/* This reloc implicitly references __tls_get_addr. We know
|
||
another reloc will reference the same symbol as the one
|
||
on this reloc, so the real symbol and section will be
|
||
gc marked when processing the other reloc. That lets
|
||
us handle __tls_get_addr here. */
|
||
h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
|
||
false, false, true);
|
||
BFD_ASSERT (h != NULL);
|
||
h->mark = 1;
|
||
if (h->is_weakalias)
|
||
weakdef (h)->mark = 1;
|
||
sym = NULL;
|
||
}
|
||
}
|
||
|
||
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
||
}
|
||
|
||
static Elf_Internal_Rela *
|
||
sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
|
||
Elf_Internal_Rela *relend,
|
||
bfd_vma offset)
|
||
{
|
||
while (rel < relend)
|
||
{
|
||
if (rel->r_offset == offset)
|
||
return rel;
|
||
rel++;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Remove undefined weak symbol from the dynamic symbol table if it
|
||
is resolved to 0. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_fixup_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
if (h->dynindx != -1
|
||
&& UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
|
||
_bfd_sparc_elf_hash_entry (h)))
|
||
{
|
||
h->dynindx = -1;
|
||
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
||
h->dynstr_index);
|
||
}
|
||
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. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
asection *s, *srel;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (htab->elf.dynobj != NULL
|
||
&& (h->needs_plt
|
||
|| h->type == STT_GNU_IFUNC
|
||
|| h->is_weakalias
|
||
|| (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->type == STT_GNU_IFUNC
|
||
|| 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
|
||
|| (h->type != STT_GNU_IFUNC
|
||
&& (SYMBOL_CALLS_LOCAL (info, h)
|
||
|| (h->root.type == bfd_link_hash_undefweak
|
||
&& ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))))
|
||
{
|
||
/* 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->is_weakalias)
|
||
{
|
||
struct elf_link_hash_entry *def = weakdef (h);
|
||
BFD_ASSERT (def->root.type == bfd_link_hash_defined);
|
||
h->root.u.def.section = def->root.u.def.section;
|
||
h->root.u.def.value = def->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 (bfd_link_pic (info))
|
||
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;
|
||
|
||
/* If -z nocopyreloc was given, we won't generate them either. */
|
||
if (info->nocopyreloc)
|
||
{
|
||
h->non_got_ref = 0;
|
||
return true;
|
||
}
|
||
|
||
/* If we don't find any dynamic relocs in read-only sections, then
|
||
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
||
if (!_bfd_elf_readonly_dynrelocs (h))
|
||
{
|
||
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_READONLY) != 0)
|
||
{
|
||
s = htab->elf.sdynrelro;
|
||
srel = htab->elf.sreldynrelro;
|
||
}
|
||
else
|
||
{
|
||
s = htab->elf.sdynbss;
|
||
srel = htab->elf.srelbss;
|
||
}
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
|
||
{
|
||
srel->size += SPARC_ELF_RELA_BYTES (htab);
|
||
h->needs_copy = 1;
|
||
}
|
||
|
||
return _bfd_elf_adjust_dynamic_copy (info, h, s);
|
||
}
|
||
|
||
/* Allocate space in .plt, .got and associated reloc sections for
|
||
dynamic relocs. */
|
||
|
||
static bool
|
||
allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
|
||
{
|
||
struct bfd_link_info *info;
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
struct _bfd_sparc_elf_link_hash_entry *eh;
|
||
struct elf_dyn_relocs *p;
|
||
bool resolved_to_zero;
|
||
|
||
if (h->root.type == bfd_link_hash_indirect)
|
||
return true;
|
||
|
||
info = (struct bfd_link_info *) inf;
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
|
||
resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
|
||
|
||
if ((htab->elf.dynamic_sections_created
|
||
&& h->plt.refcount > 0)
|
||
|| (h->type == STT_GNU_IFUNC
|
||
&& h->def_regular
|
||
&& h->ref_regular))
|
||
{
|
||
/* Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->root.type == bfd_link_hash_undefweak
|
||
&& !resolved_to_zero
|
||
&& h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
|
||
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
|
||
|| (h->type == STT_GNU_IFUNC
|
||
&& h->def_regular))
|
||
{
|
||
asection *s = htab->elf.splt;
|
||
|
||
if (s == NULL)
|
||
s = htab->elf.iplt;
|
||
|
||
/* Allocate room for the header. */
|
||
if (s->size == 0)
|
||
{
|
||
s->size = htab->plt_header_size;
|
||
|
||
/* Allocate space for the .rela.plt.unloaded relocations. */
|
||
if (htab->elf.target_os == is_vxworks
|
||
&& !bfd_link_pic (info))
|
||
htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
|
||
}
|
||
|
||
/* The procedure linkage table size is bounded by the magnitude
|
||
of the offset we can describe in the entry. */
|
||
if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
|
||
(((bfd_vma)1 << 31) << 1) : 0x400000))
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
if (SPARC_ELF_WORD_BYTES(htab) == 8
|
||
&& s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
|
||
{
|
||
bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
|
||
|
||
|
||
off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_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 (! bfd_link_pic (info)
|
||
&& !h->def_regular)
|
||
{
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = h->plt.offset;
|
||
}
|
||
|
||
/* Make room for this entry. */
|
||
s->size += htab->plt_entry_size;
|
||
|
||
/* There should be no PLT relocations against resolved undefined
|
||
weak symbols in the executable. */
|
||
if (!resolved_to_zero)
|
||
{
|
||
/* We also need to make an entry in the .rela.plt section. */
|
||
if (s == htab->elf.splt)
|
||
htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
|
||
else
|
||
htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
|
||
}
|
||
|
||
if (htab->elf.target_os == is_vxworks)
|
||
{
|
||
/* Allocate space for the .got.plt entry. */
|
||
htab->elf.sgotplt->size += 4;
|
||
|
||
/* ...and for the .rela.plt.unloaded relocations. */
|
||
if (!bfd_link_pic (info))
|
||
htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
|
||
}
|
||
}
|
||
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
|
||
&& bfd_link_executable (info)
|
||
&& h->dynindx == -1
|
||
&& _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
|
||
h->got.offset = (bfd_vma) -1;
|
||
else if (h->got.refcount > 0)
|
||
{
|
||
asection *s;
|
||
bool dyn;
|
||
int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
|
||
|
||
/* Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->root.type == bfd_link_hash_undefweak
|
||
&& !resolved_to_zero
|
||
&& h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
|
||
s = htab->elf.sgot;
|
||
h->got.offset = s->size;
|
||
s->size += SPARC_ELF_WORD_BYTES (htab);
|
||
/* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
|
||
if (tls_type == GOT_TLS_GD)
|
||
s->size += SPARC_ELF_WORD_BYTES (htab);
|
||
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 and two if global. */
|
||
if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
|
||
|| tls_type == GOT_TLS_IE
|
||
|| h->type == STT_GNU_IFUNC)
|
||
htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
|
||
else if (tls_type == GOT_TLS_GD)
|
||
htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
|
||
else if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
|
||
/* Even if the symbol isn't dynamic, we may generate a
|
||
reloc for the dynamic linker in PIC mode. */
|
||
|| (h->dynindx == -1
|
||
&& !h->forced_local
|
||
&& h->root.type != bfd_link_hash_undefweak
|
||
&& bfd_link_pic (info)))
|
||
/* No dynamic relocations are needed against resolved
|
||
undefined weak symbols in an executable. */
|
||
&& !(h->root.type == bfd_link_hash_undefweak
|
||
&& (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
|| resolved_to_zero)))
|
||
htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
|
||
}
|
||
else
|
||
h->got.offset = (bfd_vma) -1;
|
||
|
||
if (h->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 (bfd_link_pic (info))
|
||
{
|
||
if (SYMBOL_CALLS_LOCAL (info, h))
|
||
{
|
||
struct elf_dyn_relocs **pp;
|
||
|
||
for (pp = &h->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;
|
||
}
|
||
}
|
||
|
||
if (htab->elf.target_os == is_vxworks)
|
||
{
|
||
struct elf_dyn_relocs **pp;
|
||
|
||
for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
|
||
{
|
||
if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
|
||
*pp = p->next;
|
||
else
|
||
pp = &p->next;
|
||
}
|
||
}
|
||
|
||
/* Also discard relocs on undefined weak syms with non-default
|
||
visibility or in PIE. */
|
||
if (h->dyn_relocs != NULL
|
||
&& h->root.type == bfd_link_hash_undefweak)
|
||
{
|
||
/* An undefined weak symbol is never
|
||
bound locally in a shared library. */
|
||
|
||
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
|| resolved_to_zero)
|
||
{
|
||
if (h->non_got_ref)
|
||
{
|
||
/* Keep dynamic non-GOT/non-PLT relocation so that we
|
||
can branch to 0 without PLT. */
|
||
struct elf_dyn_relocs **pp;
|
||
|
||
for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
|
||
if (p->pc_count == 0)
|
||
*pp = p->next;
|
||
else
|
||
{
|
||
/* Remove other relocations. */
|
||
p->count = p->pc_count;
|
||
pp = &p->next;
|
||
}
|
||
|
||
if (h->dyn_relocs != NULL)
|
||
{
|
||
/* Make sure undefined weak symbols are output
|
||
as dynamic symbols in PIEs for dynamic non-GOT
|
||
non-PLT reloations. */
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
h->dyn_relocs = NULL;
|
||
}
|
||
|
||
/* Make sure undefined weak symbols are output as a dynamic
|
||
symbol in PIEs. */
|
||
else if (h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
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->root.type == bfd_link_hash_undefweak
|
||
&& !resolved_to_zero))
|
||
&& ((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))))
|
||
{
|
||
/* Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->root.type == bfd_link_hash_undefweak
|
||
&& !resolved_to_zero
|
||
&& 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;
|
||
}
|
||
|
||
h->dyn_relocs = NULL;
|
||
|
||
keep: ;
|
||
}
|
||
|
||
/* Finally, allocate space. */
|
||
for (p = h->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
||
sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Allocate space in .plt, .got and associated reloc sections for
|
||
local dynamic relocs. */
|
||
|
||
static int
|
||
allocate_local_dynrelocs (void **slot, void *inf)
|
||
{
|
||
struct elf_link_hash_entry *h
|
||
= (struct elf_link_hash_entry *) *slot;
|
||
|
||
if (h->type != STT_GNU_IFUNC
|
||
|| !h->def_regular
|
||
|| !h->ref_regular
|
||
|| !h->forced_local
|
||
|| h->root.type != bfd_link_hash_defined)
|
||
abort ();
|
||
|
||
return allocate_dynrelocs (h, inf);
|
||
}
|
||
|
||
/* Return true if the dynamic symbol for a given section should be
|
||
omitted when creating a shared library. */
|
||
|
||
bool
|
||
_bfd_sparc_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_omit_section_dynsym_default (output_bfd, info, p);
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *s;
|
||
bfd *ibfd;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
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 (bfd_link_executable (info) && !info->nointerp)
|
||
{
|
||
s = bfd_get_linker_section (dynobj, ".interp");
|
||
BFD_ASSERT (s != NULL);
|
||
s->size = htab->dynamic_interpreter_size;
|
||
s->contents = (unsigned char *) htab->dynamic_interpreter;
|
||
htab->interp = s;
|
||
}
|
||
}
|
||
|
||
/* 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 (! is_sparc_elf (ibfd))
|
||
continue;
|
||
|
||
for (s = ibfd->sections; s != NULL; s = s->next)
|
||
{
|
||
struct elf_dyn_relocs *p;
|
||
|
||
for (p = 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 (htab->elf.target_os == is_vxworks
|
||
&& strcmp (p->sec->output_section->name,
|
||
".tls_vars") == 0)
|
||
{
|
||
/* Relocations in vxworks .tls_vars sections are
|
||
handled specially by the loader. */
|
||
}
|
||
else if (p->count != 0)
|
||
{
|
||
srel = elf_section_data (p->sec)->sreloc;
|
||
if (!htab->elf.dynamic_sections_created)
|
||
srel = htab->elf.irelplt;
|
||
srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
|
||
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
||
{
|
||
info->flags |= DF_TEXTREL;
|
||
info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
|
||
p->sec->owner, p->sec);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
local_got = elf_local_got_refcounts (ibfd);
|
||
if (!local_got)
|
||
continue;
|
||
|
||
symtab_hdr = &elf_symtab_hdr (ibfd);
|
||
locsymcount = symtab_hdr->sh_info;
|
||
end_local_got = local_got + locsymcount;
|
||
local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
|
||
s = htab->elf.sgot;
|
||
srel = htab->elf.srelgot;
|
||
for (; local_got < end_local_got; ++local_got, ++local_tls_type)
|
||
{
|
||
if (*local_got > 0)
|
||
{
|
||
*local_got = s->size;
|
||
s->size += SPARC_ELF_WORD_BYTES (htab);
|
||
if (*local_tls_type == GOT_TLS_GD)
|
||
s->size += SPARC_ELF_WORD_BYTES (htab);
|
||
if (bfd_link_pic (info)
|
||
|| *local_tls_type == GOT_TLS_GD
|
||
|| *local_tls_type == GOT_TLS_IE)
|
||
srel->size += SPARC_ELF_RELA_BYTES (htab);
|
||
}
|
||
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->elf.sgot->size;
|
||
htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
|
||
htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
|
||
}
|
||
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, info);
|
||
|
||
/* Allocate .plt and .got entries, and space for local symbols. */
|
||
htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
|
||
|
||
if (! ABI_64_P (output_bfd)
|
||
&& htab->elf.target_os != is_vxworks
|
||
&& elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Make space for the trailing nop in .plt. */
|
||
if (htab->elf.splt->size > 0)
|
||
htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
|
||
|
||
/* If the .got section is more than 0x1000 bytes, we add
|
||
0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
|
||
bit relocations have a greater chance of working.
|
||
|
||
FIXME: Make this optimization work for 64-bit too. */
|
||
if (htab->elf.sgot->size >= 0x1000
|
||
&& elf_hash_table (info)->hgot->root.u.def.value == 0)
|
||
elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
|
||
}
|
||
|
||
/* The check_relocs and adjust_dynamic_symbol entry points have
|
||
determined the sizes of the various dynamic sections. Allocate
|
||
memory for them. */
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
if (s == htab->elf.splt
|
||
|| s == htab->elf.sgot
|
||
|| s == htab->elf.sdynbss
|
||
|| s == htab->elf.sdynrelro
|
||
|| s == htab->elf.iplt
|
||
|| s == htab->elf.sgotplt)
|
||
{
|
||
/* Strip this section if we don't need it; see the
|
||
comment below. */
|
||
}
|
||
else if (startswith (s->name, ".rela"))
|
||
{
|
||
if (s->size != 0)
|
||
{
|
||
/* We use the reloc_count field as a counter if we need
|
||
to copy relocs into the output file. */
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* It's not one of our sections. */
|
||
continue;
|
||
}
|
||
|
||
if (s->size == 0)
|
||
{
|
||
/* If we don't need this section, strip it from the
|
||
output file. This is mostly to handle .rela.bss and
|
||
.rela.plt. We must create both sections in
|
||
create_dynamic_sections, because they must be created
|
||
before the linker maps input sections to output
|
||
sections. The linker does that before
|
||
adjust_dynamic_symbol is called, and it is that
|
||
function which decides whether anything needs to go
|
||
into these sections. */
|
||
s->flags |= SEC_EXCLUDE;
|
||
continue;
|
||
}
|
||
|
||
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
||
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)
|
||
return false;
|
||
}
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in _bfd_sparc_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)
|
||
|
||
if (!_bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
|
||
true))
|
||
return false;
|
||
|
||
if (ABI_64_P (output_bfd))
|
||
{
|
||
int reg;
|
||
struct _bfd_sparc_elf_app_reg * app_regs;
|
||
struct elf_strtab_hash *dynstr;
|
||
struct elf_link_hash_table *eht = elf_hash_table (info);
|
||
|
||
/* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
|
||
entries if needed. */
|
||
app_regs = _bfd_sparc_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->isym.st_target_internal = 0;
|
||
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;
|
||
}
|
||
|
||
bool
|
||
_bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
|
||
{
|
||
if (!sec->used_by_bfd)
|
||
{
|
||
struct _bfd_sparc_elf_section_data *sdata;
|
||
size_t amt = sizeof (*sdata);
|
||
|
||
sdata = bfd_zalloc (abfd, amt);
|
||
if (sdata == NULL)
|
||
return false;
|
||
sec->used_by_bfd = sdata;
|
||
}
|
||
|
||
return _bfd_elf_new_section_hook (abfd, sec);
|
||
}
|
||
|
||
bool
|
||
_bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
|
||
struct bfd_section *section,
|
||
struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
|
||
bool *again)
|
||
{
|
||
if (bfd_link_relocatable (link_info))
|
||
(*link_info->callbacks->einfo)
|
||
(_("%P%F: --relax and -r may not be used together\n"));
|
||
|
||
*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 (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 (struct bfd_link_info *info, bfd_vma address)
|
||
{
|
||
struct elf_link_hash_table *htab = elf_hash_table (info);
|
||
const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
|
||
bfd_vma static_tls_size;
|
||
|
||
/* If tls_sec is NULL, we should have signalled an error already. */
|
||
if (htab->tls_sec == NULL)
|
||
return 0;
|
||
|
||
/* Consider special static TLS alignment requirements. */
|
||
static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
|
||
return address - static_tls_size - htab->tls_sec->vma;
|
||
}
|
||
|
||
/* Return the relocation value for a %gdop relocation. */
|
||
|
||
static bfd_vma
|
||
gdopoff (struct bfd_link_info *info, bfd_vma address)
|
||
{
|
||
struct elf_link_hash_table *htab = elf_hash_table (info);
|
||
bfd_vma got_base;
|
||
|
||
got_base = (htab->hgot->root.u.def.value
|
||
+ htab->hgot->root.u.def.section->output_offset
|
||
+ htab->hgot->root.u.def.section->output_section->vma);
|
||
|
||
return address - got_base;
|
||
}
|
||
|
||
/* Return whether H is local and its ADDRESS is within 4G of
|
||
_GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a
|
||
sethi, xor sequence. */
|
||
|
||
static bool
|
||
gdop_relative_offset_ok (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
bfd_vma address ATTRIBUTE_UNUSED)
|
||
{
|
||
if (!SYMBOL_REFERENCES_LOCAL (info, h))
|
||
return false;
|
||
/* If H is undefined, ADDRESS will be zero. We can't allow a
|
||
relative offset to "zero" when producing PIEs or shared libs.
|
||
Note that to get here with an undefined symbol it must also be
|
||
hidden or internal visibility. */
|
||
if (bfd_link_pic (info)
|
||
&& h != NULL
|
||
&& (h->root.type == bfd_link_hash_undefweak
|
||
|| h->root.type == bfd_link_hash_undefined))
|
||
return false;
|
||
#ifdef BFD64
|
||
return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32;
|
||
#else
|
||
return true;
|
||
#endif
|
||
}
|
||
|
||
/* Relocate a SPARC ELF section. */
|
||
|
||
int
|
||
_bfd_sparc_elf_relocate_section (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 _bfd_sparc_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;
|
||
int num_relocs;
|
||
bool is_vxworks_tls;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
symtab_hdr = &elf_symtab_hdr (input_bfd);
|
||
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;
|
||
/* We have to handle relocations in vxworks .tls_vars sections
|
||
specially, because the dynamic loader is 'weird'. */
|
||
is_vxworks_tls = (htab->elf.target_os == is_vxworks
|
||
&& bfd_link_pic (info)
|
||
&& !strcmp (input_section->output_section->name,
|
||
".tls_vars"));
|
||
|
||
rel = relocs;
|
||
if (ABI_64_P (output_bfd))
|
||
num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
|
||
else
|
||
num_relocs = input_section->reloc_count;
|
||
relend = relocs + num_relocs;
|
||
for (; rel < relend; rel++)
|
||
{
|
||
int r_type, tls_type;
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
struct _bfd_sparc_elf_link_hash_entry *eh;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
bfd_vma relocation, off;
|
||
bfd_reloc_status_type r;
|
||
bool is_plt = false;
|
||
bool unresolved_reloc;
|
||
bool resolved_to_zero;
|
||
bool relative_reloc;
|
||
|
||
r_type = SPARC_ELF_R_TYPE (rel->r_info);
|
||
if (r_type == R_SPARC_GNU_VTINHERIT
|
||
|| r_type == R_SPARC_GNU_VTENTRY)
|
||
continue;
|
||
|
||
if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
r_symndx = SPARC_ELF_R_SYMNDX (htab, 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);
|
||
|
||
if (!bfd_link_relocatable (info)
|
||
&& ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
|
||
{
|
||
/* Relocate against local STT_GNU_IFUNC symbol. */
|
||
h = elf_sparc_get_local_sym_hash (htab, input_bfd,
|
||
rel, false);
|
||
if (h == NULL)
|
||
abort ();
|
||
|
||
/* Set STT_GNU_IFUNC symbol value. */
|
||
h->root.u.def.value = sym->st_value;
|
||
h->root.u.def.section = sec;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
bool warned, ignored;
|
||
|
||
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
r_symndx, symtab_hdr, sym_hashes,
|
||
h, sec, relocation,
|
||
unresolved_reloc, warned, ignored);
|
||
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;
|
||
}
|
||
}
|
||
|
||
if (sec != NULL && discarded_section (sec))
|
||
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
||
rel, 1, relend, howto, 0, contents);
|
||
|
||
if (bfd_link_relocatable (info))
|
||
continue;
|
||
|
||
if (h != NULL
|
||
&& h->type == STT_GNU_IFUNC
|
||
&& h->def_regular)
|
||
{
|
||
asection *plt_sec;
|
||
const char *name;
|
||
|
||
if ((input_section->flags & SEC_ALLOC) == 0
|
||
|| h->plt.offset == (bfd_vma) -1)
|
||
{
|
||
/* If this is a SHT_NOTE section without SHF_ALLOC, treat
|
||
STT_GNU_IFUNC symbol as STT_FUNC. */
|
||
if (elf_section_type (input_section) == SHT_NOTE)
|
||
goto skip_ifunc;
|
||
|
||
/* 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 ((input_section->flags & SEC_ALLOC) == 0
|
||
&& (input_section->flags & SEC_DEBUGGING) != 0)
|
||
continue;
|
||
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%pB(%pA+%#" PRIx64 "): "
|
||
"unresolvable %s relocation against symbol `%s'"),
|
||
input_bfd,
|
||
input_section,
|
||
(uint64_t) rel->r_offset,
|
||
howto->name,
|
||
h->root.root.string);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
plt_sec = htab->elf.splt;
|
||
if (! plt_sec)
|
||
plt_sec =htab->elf.iplt;
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_GOTDATA_OP:
|
||
continue;
|
||
|
||
case R_SPARC_GOTDATA_OP_HIX22:
|
||
case R_SPARC_GOTDATA_OP_LOX10:
|
||
r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
|
||
? R_SPARC_GOT22
|
||
: R_SPARC_GOT10);
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
/* Fall through. */
|
||
|
||
case R_SPARC_GOT10:
|
||
case R_SPARC_GOT13:
|
||
case R_SPARC_GOT22:
|
||
if (htab->elf.sgot == NULL)
|
||
abort ();
|
||
off = h->got.offset;
|
||
if (off == (bfd_vma) -1)
|
||
abort();
|
||
relocation = htab->elf.sgot->output_offset + off - got_base;
|
||
goto do_relocation;
|
||
|
||
case R_SPARC_WPLT30:
|
||
case R_SPARC_WDISP30:
|
||
relocation = (plt_sec->output_section->vma
|
||
+ plt_sec->output_offset + h->plt.offset);
|
||
goto do_relocation;
|
||
|
||
case R_SPARC_32:
|
||
case R_SPARC_64:
|
||
if (bfd_link_pic (info) && h->non_got_ref)
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_vma offset;
|
||
|
||
offset = _bfd_elf_section_offset (output_bfd, info,
|
||
input_section,
|
||
rel->r_offset);
|
||
if (offset == (bfd_vma) -1
|
||
|| offset == (bfd_vma) -2)
|
||
abort();
|
||
|
||
outrel.r_offset = (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ offset);
|
||
|
||
if (h->dynindx == -1
|
||
|| h->forced_local
|
||
|| bfd_link_executable (info))
|
||
{
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
|
||
0, R_SPARC_IRELATIVE);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
if (h->dynindx == -1)
|
||
abort();
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
|
||
outrel.r_addend = rel->r_addend;
|
||
}
|
||
|
||
sparc_elf_append_rela (output_bfd, sreloc, &outrel);
|
||
continue;
|
||
}
|
||
|
||
relocation = (plt_sec->output_section->vma
|
||
+ plt_sec->output_offset + h->plt.offset);
|
||
goto do_relocation;
|
||
|
||
case R_SPARC_HI22:
|
||
case R_SPARC_LO10:
|
||
/* We should only see such relocs in static links. */
|
||
if (bfd_link_pic (info))
|
||
abort();
|
||
relocation = (plt_sec->output_section->vma
|
||
+ plt_sec->output_offset + h->plt.offset);
|
||
goto do_relocation;
|
||
|
||
default:
|
||
if (h->root.root.string)
|
||
name = h->root.root.string;
|
||
else
|
||
name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
||
NULL);
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%pB: relocation %s against STT_GNU_IFUNC "
|
||
"symbol `%s' isn't handled by %s"), input_bfd,
|
||
_bfd_sparc_elf_howto_table[r_type].name,
|
||
name, __FUNCTION__);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
skip_ifunc:
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
|
||
resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_GOTDATA_OP_HIX22:
|
||
case R_SPARC_GOTDATA_OP_LOX10:
|
||
if (gdop_relative_offset_ok (info, h, relocation))
|
||
{
|
||
r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
|
||
? R_SPARC_GOTDATA_HIX22
|
||
: R_SPARC_GOTDATA_LOX10);
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
}
|
||
break;
|
||
|
||
case R_SPARC_GOTDATA_OP:
|
||
if (gdop_relative_offset_ok (info, h, relocation))
|
||
{
|
||
bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
|
||
/* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
|
||
relocation = 0x80000000 | (insn & 0x3e07c01f);
|
||
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
|
||
|
||
/* If the symbol is global but not dynamic, an .rela.* slot has
|
||
been allocated for it in the GOT so output R_SPARC_NONE here,
|
||
if it isn't also subject to another, old-style GOT relocation.
|
||
See also the handling of these GOT relocations just below. */
|
||
if (h != NULL
|
||
&& h->dynindx == -1
|
||
&& !h->forced_local
|
||
&& h->root.type != bfd_link_hash_undefweak
|
||
&& !eh->has_old_style_got_reloc
|
||
&& (h->got.offset & 1) == 0
|
||
&& bfd_link_pic (info))
|
||
{
|
||
asection *s = htab->elf.srelgot;
|
||
Elf_Internal_Rela outrel;
|
||
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
memset (&outrel, 0, sizeof outrel);
|
||
sparc_elf_append_rela (output_bfd, s, &outrel);
|
||
h->got.offset |= 1;
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_SPARC_GOTDATA_HIX22:
|
||
case R_SPARC_GOTDATA_LOX10:
|
||
relocation = gdopoff (info, relocation);
|
||
break;
|
||
|
||
case R_SPARC_GOTDATA_OP_HIX22:
|
||
case R_SPARC_GOTDATA_OP_LOX10:
|
||
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->elf.sgot == NULL)
|
||
abort ();
|
||
|
||
relative_reloc = false;
|
||
if (h != NULL)
|
||
{
|
||
bool 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,
|
||
bfd_link_pic (info),
|
||
h)
|
||
|| (bfd_link_pic (info)
|
||
&& SYMBOL_REFERENCES_LOCAL (info, h)))
|
||
{
|
||
/* 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 for 64-bit
|
||
and 4 for 32-bit, 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
|
||
{
|
||
/* If this symbol isn't dynamic in PIC mode, treat it
|
||
like a local symbol in PIC mode below. */
|
||
if (h->dynindx == -1
|
||
&& !h->forced_local
|
||
&& h->root.type != bfd_link_hash_undefweak
|
||
&& bfd_link_pic (info))
|
||
relative_reloc = true;
|
||
else
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
|
||
htab->elf.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 on 64-bit and
|
||
4 on 32-bit. We use the least significant bit to record
|
||
whether we have already processed this entry. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
/* For a local symbol in PIC mode, we need to generate a
|
||
R_SPARC_RELATIVE reloc for the dynamic linker. */
|
||
if (bfd_link_pic (info))
|
||
relative_reloc = true;
|
||
else
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
|
||
htab->elf.sgot->contents + off);
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
}
|
||
|
||
if (relative_reloc)
|
||
{
|
||
asection *s = htab->elf.srelgot;
|
||
Elf_Internal_Rela outrel;
|
||
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
outrel.r_offset = (htab->elf.sgot->output_section->vma
|
||
+ htab->elf.sgot->output_offset
|
||
+ off);
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
|
||
0, R_SPARC_RELATIVE);
|
||
outrel.r_addend = relocation;
|
||
sparc_elf_append_rela (output_bfd, s, &outrel);
|
||
/* Versions of glibc ld.so at least up to 2.26 wrongly
|
||
add the section contents to the value calculated for
|
||
a RELATIVE reloc. Zero the contents to work around
|
||
this bug. */
|
||
relocation = 0;
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
|
||
htab->elf.sgot->contents + off);
|
||
}
|
||
|
||
relocation = htab->elf.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. */
|
||
|
||
if (! ABI_64_P (output_bfd))
|
||
{
|
||
/* The Solaris native assembler will generate a WPLT30 reloc
|
||
for a local symbol if you assemble a call from one
|
||
section to another when using -K pic. We treat it as
|
||
WDISP30. */
|
||
if (h == NULL)
|
||
break;
|
||
}
|
||
/* PR 7027: We need similar behaviour for 64-bit binaries. */
|
||
else if (r_type == R_SPARC_WPLT30 && h == NULL)
|
||
break;
|
||
else
|
||
{
|
||
BFD_ASSERT (h != NULL);
|
||
}
|
||
|
||
if (h->plt.offset == (bfd_vma) -1 || htab->elf.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->elf.splt->output_section->vma
|
||
+ htab->elf.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_WDISP10:
|
||
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_H34:
|
||
case R_SPARC_UA64:
|
||
r_sparc_plt32:
|
||
if ((input_section->flags & SEC_ALLOC) == 0 || is_vxworks_tls)
|
||
break;
|
||
|
||
/* Copy dynamic function pointer relocations. Don't generate
|
||
dynamic relocations against resolved undefined weak symbols
|
||
in PIE. */
|
||
if ((bfd_link_pic (info)
|
||
&& (h == NULL
|
||
|| !(h->root.type == bfd_link_hash_undefweak
|
||
&& (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
|| resolved_to_zero)))
|
||
&& (! howto->pc_relative
|
||
|| !SYMBOL_CALLS_LOCAL (info, h)))
|
||
|| (!bfd_link_pic (info)
|
||
&& h != NULL
|
||
&& h->dynindx != -1
|
||
&& !h->non_got_ref
|
||
&& ((h->def_dynamic
|
||
&& !h->def_regular)
|
||
|| (h->root.type == bfd_link_hash_undefweak
|
||
&& !resolved_to_zero)
|
||
|| h->root.type == bfd_link_hash_undefined)))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bool 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
|
||
&& h->dynindx != -1
|
||
&& (_bfd_sparc_elf_howto_table[r_type].pc_relative
|
||
|| !bfd_link_pic (info)
|
||
|| !SYMBOLIC_BIND (info, h)
|
||
|| !h->def_regular))
|
||
{
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
|
||
outrel.r_addend = rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
|
||
|| (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
|
||
{
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
|
||
0, R_SPARC_RELATIVE);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
long indx;
|
||
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
|
||
if (is_plt)
|
||
sec = htab->elf.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;
|
||
|
||
/* We are turning this relocation into one
|
||
against a section symbol. It would be
|
||
proper to subtract the symbol's value,
|
||
osec->vma, from the emitted reloc addend,
|
||
but ld.so expects buggy relocs. */
|
||
osec = sec->output_section;
|
||
indx = elf_section_data (osec)->dynindx;
|
||
|
||
if (indx == 0)
|
||
{
|
||
osec = htab->elf.text_index_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
|
||
(_("%pB: probably compiled without -fPIC?"),
|
||
input_bfd);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
|
||
r_type);
|
||
}
|
||
}
|
||
|
||
sparc_elf_append_rela (output_bfd, sreloc, &outrel);
|
||
|
||
/* 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 = sparc_elf_tls_transition (info, input_bfd, r_type,
|
||
h == NULL || h->dynindx == -1);
|
||
if (r_type == R_SPARC_REV32)
|
||
break;
|
||
if (h != NULL)
|
||
tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
|
||
else if (local_got_offsets)
|
||
tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
|
||
else
|
||
tls_type = GOT_UNKNOWN;
|
||
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->elf.sgot == NULL)
|
||
abort ();
|
||
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
int dr_type, indx;
|
||
|
||
if (htab->elf.srelgot == NULL)
|
||
abort ();
|
||
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
|
||
htab->elf.sgot->contents + off);
|
||
outrel.r_offset = (htab->elf.sgot->output_section->vma
|
||
+ htab->elf.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 = SPARC_ELF_TPOFF_RELOC (htab);
|
||
else
|
||
dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
|
||
if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
|
||
outrel.r_addend = relocation - dtpoff_base (info);
|
||
else
|
||
outrel.r_addend = 0;
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
|
||
sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
|
||
|
||
if (r_type == R_SPARC_TLS_GD_HI22
|
||
|| r_type == R_SPARC_TLS_GD_LO10)
|
||
{
|
||
if (indx == 0)
|
||
{
|
||
BFD_ASSERT (! unresolved_reloc);
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd,
|
||
relocation - dtpoff_base (info),
|
||
(htab->elf.sgot->contents + off
|
||
+ SPARC_ELF_WORD_BYTES (htab)));
|
||
}
|
||
else
|
||
{
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
|
||
(htab->elf.sgot->contents + off
|
||
+ SPARC_ELF_WORD_BYTES (htab)));
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
|
||
SPARC_ELF_DTPOFF_RELOC (htab));
|
||
outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
|
||
sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
|
||
&outrel);
|
||
}
|
||
}
|
||
else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
|
||
{
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
|
||
(htab->elf.sgot->contents + off
|
||
+ SPARC_ELF_WORD_BYTES (htab)));
|
||
}
|
||
}
|
||
|
||
if (off >= (bfd_vma) -2)
|
||
abort ();
|
||
|
||
relocation = htab->elf.sgot->output_offset + off - got_base;
|
||
unresolved_reloc = false;
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
break;
|
||
|
||
case R_SPARC_TLS_LDM_HI22:
|
||
case R_SPARC_TLS_LDM_LO10:
|
||
/* LD -> LE */
|
||
if (bfd_link_executable (info))
|
||
{
|
||
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:
|
||
/* LD -> LE */
|
||
if (bfd_link_executable (info))
|
||
{
|
||
if (r_type == R_SPARC_TLS_LDO_HIX22)
|
||
r_type = R_SPARC_TLS_LE_HIX22;
|
||
else
|
||
r_type = R_SPARC_TLS_LE_LOX10;
|
||
}
|
||
else
|
||
{
|
||
relocation -= dtpoff_base (info);
|
||
break;
|
||
}
|
||
/* Fall through. */
|
||
|
||
case R_SPARC_TLS_LE_HIX22:
|
||
case R_SPARC_TLS_LE_LOX10:
|
||
if (!bfd_link_executable (info))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_vma offset
|
||
= _bfd_elf_section_offset (output_bfd, info, input_section,
|
||
rel->r_offset);
|
||
if (offset == (bfd_vma) -1 || offset == (bfd_vma) -2)
|
||
memset (&outrel, 0, sizeof outrel);
|
||
else
|
||
{
|
||
outrel.r_offset = offset
|
||
+ input_section->output_section->vma
|
||
+ input_section->output_offset;
|
||
outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
|
||
outrel.r_addend
|
||
= relocation - dtpoff_base (info) + rel->r_addend;
|
||
}
|
||
|
||
BFD_ASSERT (sreloc != NULL);
|
||
sparc_elf_append_rela (output_bfd, sreloc, &outrel);
|
||
continue;
|
||
}
|
||
relocation = tpoff (info, relocation);
|
||
break;
|
||
|
||
case R_SPARC_TLS_LDM_CALL:
|
||
/* LD -> LE */
|
||
if (bfd_link_executable (info))
|
||
{
|
||
/* mov %g0, %o0 */
|
||
bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
/* Fall through */
|
||
|
||
case R_SPARC_TLS_GD_CALL:
|
||
if (h != NULL)
|
||
tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
|
||
else if (local_got_offsets)
|
||
tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
|
||
else
|
||
tls_type = GOT_UNKNOWN;
|
||
/* GD -> IE or LE */
|
||
if (bfd_link_executable (info)
|
||
|| (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
|
||
{
|
||
Elf_Internal_Rela *rel2;
|
||
bfd_vma insn;
|
||
|
||
/* GD -> LE */
|
||
if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
|
||
{
|
||
bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
|
||
continue;
|
||
}
|
||
|
||
/* GD -> IE */
|
||
if (rel + 1 < relend
|
||
&& SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
|
||
&& rel[1].r_offset == rel->r_offset + 4
|
||
&& SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
|
||
&& (((insn = bfd_get_32 (input_bfd,
|
||
contents + rel[1].r_offset))
|
||
>> 25) & 0x1f) == 8)
|
||
{
|
||
/* We have
|
||
call __tls_get_addr, %tgd_call(foo)
|
||
add %reg1, %reg2, %o0, %tgd_add(foo)
|
||
and change it into IE:
|
||
{ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
|
||
add %g7, %o0, %o0, %tie_add(foo).
|
||
add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
|
||
ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
|
||
ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
|
||
bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
|
||
contents + rel->r_offset);
|
||
bfd_put_32 (output_bfd, 0x9001c008,
|
||
contents + rel->r_offset + 4);
|
||
rel++;
|
||
continue;
|
||
}
|
||
|
||
/* We cannot just overwrite the delay slot instruction,
|
||
as it might be what puts the %o0 argument to
|
||
__tls_get_addr into place. So we have to transpose
|
||
the delay slot with the add we patch in. */
|
||
insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
|
||
bfd_put_32 (output_bfd, insn,
|
||
contents + rel->r_offset);
|
||
bfd_put_32 (output_bfd, 0x9001c008,
|
||
contents + rel->r_offset + 4);
|
||
|
||
rel2 = rel;
|
||
while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
|
||
rel->r_offset + 4))
|
||
!= NULL)
|
||
{
|
||
/* If the instruction we moved has a relocation attached to
|
||
it, adjust the offset so that it will apply to the correct
|
||
instruction. */
|
||
rel2->r_offset -= 4;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
h = (struct elf_link_hash_entry *)
|
||
bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
|
||
false, true);
|
||
BFD_ASSERT (h != NULL);
|
||
r_type = R_SPARC_WPLT30;
|
||
howto = _bfd_sparc_elf_howto_table + r_type;
|
||
goto r_sparc_wplt30;
|
||
|
||
case R_SPARC_TLS_GD_ADD:
|
||
if (h != NULL)
|
||
tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
|
||
else if (local_got_offsets)
|
||
tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
|
||
else
|
||
tls_type = GOT_UNKNOWN;
|
||
/* GD -> IE or LE */
|
||
if (bfd_link_executable (info) || tls_type == GOT_TLS_IE)
|
||
{
|
||
/* add %reg1, %reg2, %reg3, %tgd_add(foo)
|
||
changed into IE:
|
||
{ld,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 (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
|
||
relocation = (insn & ~0x7c000) | 0x1c000;
|
||
else
|
||
relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
|
||
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
|
||
}
|
||
continue;
|
||
|
||
case R_SPARC_TLS_LDM_ADD:
|
||
/* LD -> LE */
|
||
if (bfd_link_executable (info))
|
||
bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
|
||
continue;
|
||
|
||
case R_SPARC_TLS_LDO_ADD:
|
||
/* LD -> LE */
|
||
if (bfd_link_executable (info))
|
||
{
|
||
/* 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:
|
||
/* IE -> LE */
|
||
if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
|
||
{
|
||
bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
int rs2 = insn & 0x1f;
|
||
int rd = (insn >> 25) & 0x1f;
|
||
|
||
if (rs2 == rd)
|
||
relocation = SPARC_NOP;
|
||
else
|
||
relocation = 0x80100000 | (insn & 0x3e00001f);
|
||
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
|
||
}
|
||
continue;
|
||
|
||
case R_SPARC_TLS_IE_ADD:
|
||
/* Totally useless relocation. */
|
||
continue;
|
||
|
||
case R_SPARC_TLS_DTPOFF32:
|
||
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_elf_section_offset (output_bfd, info, input_section,
|
||
rel->r_offset) != (bfd_vma) -1)
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%pB(%pA+%#" PRIx64 "): "
|
||
"unresolvable %s relocation against symbol `%s'"),
|
||
input_bfd,
|
||
input_section,
|
||
(uint64_t) rel->r_offset,
|
||
howto->name,
|
||
h->root.root.string);
|
||
|
||
r = bfd_reloc_continue;
|
||
if (r_type == R_SPARC_OLO10)
|
||
{
|
||
bfd_vma x;
|
||
|
||
if (! ABI_64_P (output_bfd))
|
||
abort ();
|
||
|
||
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_WDISP10)
|
||
{
|
||
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) & 0x300) << 11)
|
||
| (((relocation >> 2) & 0xff) << 5));
|
||
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_REV32)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation = relocation + rel->r_addend;
|
||
|
||
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
x = x + relocation;
|
||
bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else if (r_type == R_SPARC_TLS_LDO_HIX22
|
||
|| r_type == R_SPARC_TLS_LE_HIX22)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
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;
|
||
}
|
||
else 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
|
||
|| r_type == R_SPARC_GOTDATA_HIX22
|
||
|| r_type == R_SPARC_GOTDATA_OP_HIX22)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
if (r_type == R_SPARC_HIX22
|
||
|| (bfd_signed_vma) relocation < 0)
|
||
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
|
||
|| r_type == R_SPARC_GOTDATA_LOX10
|
||
|| r_type == R_SPARC_GOTDATA_OP_LOX10)
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
if (r_type == R_SPARC_LOX10
|
||
|| (bfd_signed_vma) relocation < 0)
|
||
relocation = (relocation & 0x3ff) | 0x1c00;
|
||
else
|
||
relocation = (relocation & 0x3ff);
|
||
|
||
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)
|
||
&& (ABI_64_P (output_bfd)
|
||
|| elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
|
||
x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
|
||
else
|
||
x = INSN_BA | (reloc & 0x3fffff); /* ba */
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
r = bfd_reloc_ok;
|
||
if (rel->r_offset >= 4
|
||
&& (y & (0xffffffff ^ RS1(~0)))
|
||
== (INSN_OR | RD(O7) | RS2(G0)))
|
||
{
|
||
bfd_vma z;
|
||
unsigned int reg;
|
||
|
||
z = bfd_get_32 (input_bfd,
|
||
contents + rel->r_offset - 4);
|
||
if ((z & (0xffffffff ^ RD(~0)))
|
||
!= (INSN_OR | RS1(O7) | RS2(G0)))
|
||
continue;
|
||
|
||
/* 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)
|
||
continue;
|
||
|
||
bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
|
||
contents + rel->r_offset + 4);
|
||
}
|
||
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (r == bfd_reloc_continue)
|
||
{
|
||
do_relocation:
|
||
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;
|
||
|
||
/* The Solaris native linker silently disregards overflows.
|
||
We don't, but this breaks stabs debugging info, whose
|
||
relocations are only 32-bits wide. Ignore overflows in
|
||
this case and also for discarded entries. */
|
||
if ((r_type == R_SPARC_32
|
||
|| r_type == R_SPARC_UA32
|
||
|| r_type == R_SPARC_DISP32)
|
||
&& (((input_section->flags & SEC_DEBUGGING) != 0
|
||
&& strcmp (bfd_section_name (input_section),
|
||
".stab") == 0)
|
||
|| _bfd_elf_section_offset (output_bfd, info,
|
||
input_section,
|
||
rel->r_offset)
|
||
== (bfd_vma)-1))
|
||
break;
|
||
|
||
if (h != NULL)
|
||
{
|
||
/* Assume this is a call protected by other code that
|
||
detect the symbol is undefined. If this is the case,
|
||
we can safely ignore the overflow. If not, the
|
||
program is hosed anyway, and a little warning isn't
|
||
going to help. */
|
||
if (h->root.type == bfd_link_hash_undefweak
|
||
&& howto->pc_relative)
|
||
break;
|
||
|
||
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 (sec);
|
||
}
|
||
(*info->callbacks->reloc_overflow)
|
||
(info, (h ? &h->root : NULL), name, howto->name,
|
||
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
|
||
and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
|
||
is the offset of the associated .got.plt entry from
|
||
_GLOBAL_OFFSET_TABLE_. */
|
||
|
||
static void
|
||
sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
|
||
bfd_vma plt_offset, bfd_vma plt_index,
|
||
bfd_vma got_offset)
|
||
{
|
||
bfd_vma got_base;
|
||
const bfd_vma *plt_entry;
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
bfd_byte *loc;
|
||
Elf_Internal_Rela rela;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
if (bfd_link_pic (info))
|
||
{
|
||
plt_entry = sparc_vxworks_shared_plt_entry;
|
||
got_base = 0;
|
||
}
|
||
else
|
||
{
|
||
plt_entry = sparc_vxworks_exec_plt_entry;
|
||
got_base = (htab->elf.hgot->root.u.def.value
|
||
+ htab->elf.hgot->root.u.def.section->output_offset
|
||
+ htab->elf.hgot->root.u.def.section->output_section->vma);
|
||
}
|
||
|
||
/* Fill in the entry in the procedure linkage table. */
|
||
bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
|
||
htab->elf.splt->contents + plt_offset);
|
||
bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
|
||
htab->elf.splt->contents + plt_offset + 4);
|
||
bfd_put_32 (output_bfd, plt_entry[2],
|
||
htab->elf.splt->contents + plt_offset + 8);
|
||
bfd_put_32 (output_bfd, plt_entry[3],
|
||
htab->elf.splt->contents + plt_offset + 12);
|
||
bfd_put_32 (output_bfd, plt_entry[4],
|
||
htab->elf.splt->contents + plt_offset + 16);
|
||
bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
|
||
htab->elf.splt->contents + plt_offset + 20);
|
||
/* PC-relative displacement for a branch to the start of
|
||
the PLT section. */
|
||
bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
|
||
& 0x003fffff),
|
||
htab->elf.splt->contents + plt_offset + 24);
|
||
bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
|
||
htab->elf.splt->contents + plt_offset + 28);
|
||
|
||
/* Fill in the .got.plt entry, pointing initially at the
|
||
second half of the PLT entry. */
|
||
BFD_ASSERT (htab->elf.sgotplt != NULL);
|
||
bfd_put_32 (output_bfd,
|
||
htab->elf.splt->output_section->vma
|
||
+ htab->elf.splt->output_offset
|
||
+ plt_offset + 20,
|
||
htab->elf.sgotplt->contents + got_offset);
|
||
|
||
/* Add relocations to .rela.plt.unloaded. */
|
||
if (!bfd_link_pic (info))
|
||
{
|
||
loc = (htab->srelplt2->contents
|
||
+ (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
|
||
|
||
/* Relocate the initial sethi. */
|
||
rela.r_offset = (htab->elf.splt->output_section->vma
|
||
+ htab->elf.splt->output_offset
|
||
+ plt_offset);
|
||
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
|
||
rela.r_addend = got_offset;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* Likewise the following or. */
|
||
rela.r_offset += 4;
|
||
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* Relocate the .got.plt entry. */
|
||
rela.r_offset = (htab->elf.sgotplt->output_section->vma
|
||
+ htab->elf.sgotplt->output_offset
|
||
+ got_offset);
|
||
rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
|
||
rela.r_addend = plt_offset + 20;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
const struct elf_backend_data *bed;
|
||
struct _bfd_sparc_elf_link_hash_entry *eh;
|
||
bool resolved_to_zero;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
bed = get_elf_backend_data (output_bfd);
|
||
|
||
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
|
||
|
||
/* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
|
||
resolved undefined weak symbols in executable so that their
|
||
references have value 0 at run-time. */
|
||
resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
|
||
|
||
if (h->plt.offset != (bfd_vma) -1)
|
||
{
|
||
asection *splt;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
bfd_vma r_offset, got_offset;
|
||
int rela_index;
|
||
|
||
/* When building a static executable, use .iplt and
|
||
.rela.iplt sections for STT_GNU_IFUNC symbols. */
|
||
if (htab->elf.splt != NULL)
|
||
{
|
||
splt = htab->elf.splt;
|
||
srela = htab->elf.srelplt;
|
||
}
|
||
else
|
||
{
|
||
splt = htab->elf.iplt;
|
||
srela = htab->elf.irelplt;
|
||
}
|
||
|
||
if (splt == NULL || srela == NULL)
|
||
abort ();
|
||
|
||
/* Fill in the entry in the .rela.plt section. */
|
||
if (htab->elf.target_os == is_vxworks)
|
||
{
|
||
/* Work out the index of this PLT entry. */
|
||
rela_index = ((h->plt.offset - htab->plt_header_size)
|
||
/ htab->plt_entry_size);
|
||
|
||
/* Calculate the offset of the associated .got.plt entry.
|
||
The first three entries are reserved. */
|
||
got_offset = (rela_index + 3) * 4;
|
||
|
||
sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
|
||
rela_index, got_offset);
|
||
|
||
|
||
/* On VxWorks, the relocation points to the .got.plt entry,
|
||
not the .plt entry. */
|
||
rela.r_offset = (htab->elf.sgotplt->output_section->vma
|
||
+ htab->elf.sgotplt->output_offset
|
||
+ got_offset);
|
||
rela.r_addend = 0;
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
|
||
R_SPARC_JMP_SLOT);
|
||
}
|
||
else
|
||
{
|
||
bool ifunc = false;
|
||
|
||
/* Fill in the entry in the procedure linkage table. */
|
||
rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
|
||
h->plt.offset, splt->size,
|
||
&r_offset);
|
||
|
||
if (h == NULL
|
||
|| h->dynindx == -1
|
||
|| ((bfd_link_executable (info)
|
||
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
||
&& h->def_regular
|
||
&& h->type == STT_GNU_IFUNC))
|
||
{
|
||
ifunc = true;
|
||
BFD_ASSERT (h == NULL
|
||
|| (h->type == STT_GNU_IFUNC
|
||
&& h->def_regular
|
||
&& (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)));
|
||
}
|
||
|
||
rela.r_offset = r_offset
|
||
+ (splt->output_section->vma + splt->output_offset);
|
||
if (ABI_64_P (output_bfd)
|
||
&& h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
|
||
{
|
||
if (ifunc)
|
||
{
|
||
rela.r_addend = (h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset
|
||
+ h->root.u.def.value);
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
|
||
R_SPARC_IRELATIVE);
|
||
}
|
||
else
|
||
{
|
||
rela.r_addend = (-(h->plt.offset + 4)
|
||
- splt->output_section->vma
|
||
- splt->output_offset);
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
|
||
R_SPARC_JMP_SLOT);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (ifunc)
|
||
{
|
||
rela.r_addend = (h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset
|
||
+ h->root.u.def.value);
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
|
||
R_SPARC_JMP_IREL);
|
||
}
|
||
else
|
||
{
|
||
rela.r_addend = 0;
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 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 * bed->s->sizeof_rela;
|
||
bed->s->swap_reloca_out (output_bfd, &rela, loc);
|
||
|
||
if (!resolved_to_zero && !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;
|
||
}
|
||
}
|
||
|
||
/* Don't generate dynamic GOT relocation against resolved undefined weak
|
||
symbols in an executable. */
|
||
if (h->got.offset != (bfd_vma) -1
|
||
&& _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
|
||
&& _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
|
||
&& !(h->root.type == bfd_link_hash_undefweak
|
||
&& (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
|| resolved_to_zero)))
|
||
{
|
||
asection *sgot;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbol has an entry in the GOT. Set it up. */
|
||
|
||
sgot = htab->elf.sgot;
|
||
srela = htab->elf.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 (! bfd_link_pic (info)
|
||
&& h->type == STT_GNU_IFUNC
|
||
&& h->def_regular)
|
||
{
|
||
asection *plt;
|
||
|
||
/* We load the GOT entry with the PLT entry. */
|
||
plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd,
|
||
(plt->output_section->vma
|
||
+ plt->output_offset + h->plt.offset),
|
||
htab->elf.sgot->contents
|
||
+ (h->got.offset & ~(bfd_vma) 1));
|
||
return true;
|
||
}
|
||
|
||
if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
|
||
{
|
||
asection *sec = h->root.u.def.section;
|
||
if (h->type == STT_GNU_IFUNC)
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
|
||
else
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
|
||
rela.r_addend = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
else
|
||
{
|
||
rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
|
||
sgot->contents + (h->got.offset & ~(bfd_vma) 1));
|
||
sparc_elf_append_rela (output_bfd, srela, &rela);
|
||
}
|
||
|
||
if (h->needs_copy)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbols needs a copy reloc. Set it up. */
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
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 = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
|
||
rela.r_addend = 0;
|
||
if (h->root.u.def.section == htab->elf.sdynrelro)
|
||
s = htab->elf.sreldynrelro;
|
||
else
|
||
s = htab->elf.srelbss;
|
||
sparc_elf_append_rela (output_bfd, s, &rela);
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. On VxWorks,
|
||
_GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
|
||
".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
|
||
if (sym != NULL
|
||
&& (h == htab->elf.hdynamic
|
||
|| (htab->elf.target_os != is_vxworks
|
||
&& (h == htab->elf.hgot || h == htab->elf.hplt))))
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static bool
|
||
sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
|
||
bfd *dynobj, asection *sdyn,
|
||
asection *splt ATTRIBUTE_UNUSED)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
const struct elf_backend_data *bed;
|
||
bfd_byte *dyncon, *dynconend;
|
||
size_t dynsize;
|
||
int stt_regidx = -1;
|
||
bool abi_64_p;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
bed = get_elf_backend_data (output_bfd);
|
||
dynsize = bed->s->sizeof_dyn;
|
||
dynconend = sdyn->contents + sdyn->size;
|
||
abi_64_p = ABI_64_P (output_bfd);
|
||
for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
bool size;
|
||
|
||
bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
if (htab->elf.target_os == is_vxworks && dyn.d_tag == DT_PLTGOT)
|
||
{
|
||
/* On VxWorks, DT_PLTGOT should point to the start of the GOT,
|
||
not to the start of the PLT. */
|
||
if (htab->elf.sgotplt)
|
||
{
|
||
dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
|
||
+ htab->elf.sgotplt->output_offset);
|
||
bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
}
|
||
}
|
||
else if (htab->elf.target_os == is_vxworks
|
||
&& elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
|
||
bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
else if (abi_64_p && dyn.d_tag == 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++;
|
||
bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
}
|
||
else
|
||
{
|
||
asection *s;
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
case DT_PLTGOT:
|
||
s = htab->elf.splt;
|
||
size = false;
|
||
break;
|
||
case DT_PLTRELSZ:
|
||
s = htab->elf.srelplt;
|
||
size = true;
|
||
break;
|
||
case DT_JMPREL:
|
||
s = htab->elf.srelplt;
|
||
size = false;
|
||
break;
|
||
default:
|
||
continue;
|
||
}
|
||
|
||
if (s == NULL)
|
||
dyn.d_un.d_val = 0;
|
||
else
|
||
{
|
||
if (!size)
|
||
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
||
else
|
||
dyn.d_un.d_val = s->size;
|
||
}
|
||
bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/* Install the first PLT entry in a VxWorks executable and make sure that
|
||
.rela.plt.unloaded relocations have the correct symbol indexes. */
|
||
|
||
static void
|
||
sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
Elf_Internal_Rela rela;
|
||
bfd_vma got_base;
|
||
bfd_byte *loc;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
/* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
|
||
got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
|
||
+ htab->elf.hgot->root.u.def.section->output_offset
|
||
+ htab->elf.hgot->root.u.def.value);
|
||
|
||
/* Install the initial PLT entry. */
|
||
bfd_put_32 (output_bfd,
|
||
sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
|
||
htab->elf.splt->contents);
|
||
bfd_put_32 (output_bfd,
|
||
sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
|
||
htab->elf.splt->contents + 4);
|
||
bfd_put_32 (output_bfd,
|
||
sparc_vxworks_exec_plt0_entry[2],
|
||
htab->elf.splt->contents + 8);
|
||
bfd_put_32 (output_bfd,
|
||
sparc_vxworks_exec_plt0_entry[3],
|
||
htab->elf.splt->contents + 12);
|
||
bfd_put_32 (output_bfd,
|
||
sparc_vxworks_exec_plt0_entry[4],
|
||
htab->elf.splt->contents + 16);
|
||
|
||
loc = htab->srelplt2->contents;
|
||
|
||
/* Add an unloaded relocation for the initial entry's "sethi". */
|
||
rela.r_offset = (htab->elf.splt->output_section->vma
|
||
+ htab->elf.splt->output_offset);
|
||
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
|
||
rela.r_addend = 8;
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* Likewise the following "or". */
|
||
rela.r_offset += 4;
|
||
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* Fix up the remaining .rela.plt.unloaded relocations. They may have
|
||
the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
|
||
in which symbols were output. */
|
||
while (loc < htab->srelplt2->contents + htab->srelplt2->size)
|
||
{
|
||
Elf_Internal_Rela rel;
|
||
|
||
/* The entry's initial "sethi" (against _G_O_T_). */
|
||
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
||
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
|
||
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* The following "or" (also against _G_O_T_). */
|
||
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
||
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
|
||
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
|
||
/* The .got.plt entry (against _P_L_T_). */
|
||
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
||
rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
|
||
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
||
loc += sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
|
||
/* Install the first PLT entry in a VxWorks shared object. */
|
||
|
||
static void
|
||
sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
|
||
{
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
unsigned int i;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
|
||
for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
|
||
bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
|
||
htab->elf.splt->contents + i * 4);
|
||
}
|
||
|
||
/* Finish up local dynamic symbol handling. We set the contents of
|
||
various dynamic sections here. */
|
||
|
||
static int
|
||
finish_local_dynamic_symbol (void **slot, void *inf)
|
||
{
|
||
struct elf_link_hash_entry *h
|
||
= (struct elf_link_hash_entry *) *slot;
|
||
struct bfd_link_info *info
|
||
= (struct bfd_link_info *) inf;
|
||
|
||
return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
|
||
h, NULL);
|
||
}
|
||
|
||
/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
|
||
here since undefined weak symbol may not be dynamic and may not be
|
||
called for _bfd_sparc_elf_finish_dynamic_symbol. */
|
||
|
||
static bool
|
||
pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
|
||
void *inf)
|
||
{
|
||
struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
|
||
if (h->root.type != bfd_link_hash_undefweak
|
||
|| h->dynindx != -1)
|
||
return true;
|
||
|
||
return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
|
||
h, NULL);
|
||
}
|
||
|
||
bool
|
||
_bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
struct _bfd_sparc_elf_link_hash_table *htab;
|
||
|
||
htab = _bfd_sparc_elf_hash_table (info);
|
||
BFD_ASSERT (htab != NULL);
|
||
dynobj = htab->elf.dynobj;
|
||
|
||
/* 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 (ABI_64_P (output_bfd)
|
||
&& elf_hash_table (info)->dynlocal)
|
||
{
|
||
asection *dynsymsec = bfd_get_linker_section (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;
|
||
}
|
||
|
||
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
asection *splt;
|
||
|
||
splt = htab->elf.splt;
|
||
BFD_ASSERT (splt != NULL && sdyn != NULL);
|
||
|
||
if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
|
||
return false;
|
||
|
||
/* Initialize the contents of the .plt section. */
|
||
if (splt->size > 0)
|
||
{
|
||
if (htab->elf.target_os == is_vxworks)
|
||
{
|
||
if (bfd_link_pic (info))
|
||
sparc_vxworks_finish_shared_plt (output_bfd, info);
|
||
else
|
||
sparc_vxworks_finish_exec_plt (output_bfd, info);
|
||
}
|
||
else
|
||
{
|
||
memset (splt->contents, 0, htab->plt_header_size);
|
||
if (!ABI_64_P (output_bfd))
|
||
bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
|
||
splt->contents + splt->size - 4);
|
||
}
|
||
}
|
||
|
||
if (elf_section_data (splt->output_section) != NULL)
|
||
elf_section_data (splt->output_section)->this_hdr.sh_entsize
|
||
= ((htab->elf.target_os == is_vxworks
|
||
|| !ABI_64_P (output_bfd))
|
||
? 0 : htab->plt_entry_size);
|
||
}
|
||
|
||
/* Set the first entry in the global offset table to the address of
|
||
the dynamic section. */
|
||
if (htab->elf.sgot && htab->elf.sgot->size > 0)
|
||
{
|
||
bfd_vma val = (sdyn ?
|
||
sdyn->output_section->vma + sdyn->output_offset :
|
||
0);
|
||
|
||
SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
|
||
}
|
||
|
||
if (htab->elf.sgot)
|
||
elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
|
||
SPARC_ELF_WORD_BYTES (htab);
|
||
|
||
/* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
|
||
htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
|
||
|
||
/* Fill PLT entries for undefined weak symbols in PIE. */
|
||
if (bfd_link_pie (info))
|
||
bfd_hash_traverse (&info->hash->table,
|
||
pie_finish_undefweak_symbol,
|
||
info);
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Set the right machine number for a SPARC ELF file. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_object_p (bfd *abfd)
|
||
{
|
||
obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
|
||
obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
|
||
obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
|
||
|
||
unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
|
||
unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
|
||
| ELF_SPARC_HWCAP_VIS3
|
||
| ELF_SPARC_HWCAP_HPC);
|
||
unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
|
||
| ELF_SPARC_HWCAP_DES
|
||
| ELF_SPARC_HWCAP_KASUMI
|
||
| ELF_SPARC_HWCAP_CAMELLIA
|
||
| ELF_SPARC_HWCAP_MD5
|
||
| ELF_SPARC_HWCAP_SHA1
|
||
| ELF_SPARC_HWCAP_SHA256
|
||
| ELF_SPARC_HWCAP_SHA512
|
||
| ELF_SPARC_HWCAP_MPMUL
|
||
| ELF_SPARC_HWCAP_MONT
|
||
| ELF_SPARC_HWCAP_CRC32C
|
||
| ELF_SPARC_HWCAP_CBCOND
|
||
| ELF_SPARC_HWCAP_PAUSE);
|
||
unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
|
||
| ELF_SPARC_HWCAP_IMA);
|
||
unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
|
||
| ELF_SPARC_HWCAP2_MWAIT
|
||
| ELF_SPARC_HWCAP2_XMPMUL
|
||
| ELF_SPARC_HWCAP2_XMONT);
|
||
unsigned int m8_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC6
|
||
| ELF_SPARC_HWCAP2_ONADDSUB
|
||
| ELF_SPARC_HWCAP2_ONMUL
|
||
| ELF_SPARC_HWCAP2_ONDIV
|
||
| ELF_SPARC_HWCAP2_DICTUNP
|
||
| ELF_SPARC_HWCAP2_FPCMPSHL
|
||
| ELF_SPARC_HWCAP2_RLE
|
||
| ELF_SPARC_HWCAP2_SHA3);
|
||
|
||
if (ABI_64_P (abfd))
|
||
{
|
||
unsigned long mach = bfd_mach_sparc_v9;
|
||
|
||
if (hwcaps2->i & m8_hwcaps2_mask)
|
||
mach = bfd_mach_sparc_v9m8;
|
||
else if (hwcaps2->i & v9m_hwcaps2_mask)
|
||
mach = bfd_mach_sparc_v9m;
|
||
else if (hwcaps->i & v9v_hwcaps_mask)
|
||
mach = bfd_mach_sparc_v9v;
|
||
else if (hwcaps->i & v9e_hwcaps_mask)
|
||
mach = bfd_mach_sparc_v9e;
|
||
else if (hwcaps->i & v9d_hwcaps_mask)
|
||
mach = bfd_mach_sparc_v9d;
|
||
else if (hwcaps->i & v9c_hwcaps_mask)
|
||
mach = bfd_mach_sparc_v9c;
|
||
else 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);
|
||
}
|
||
else
|
||
{
|
||
if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
|
||
{
|
||
if (hwcaps2->i & m8_hwcaps2_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusm8);
|
||
else if (hwcaps2->i & v9m_hwcaps2_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusm);
|
||
else if (hwcaps->i & v9v_hwcaps_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusv);
|
||
else if (hwcaps->i & v9e_hwcaps_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8pluse);
|
||
else if (hwcaps->i & v9d_hwcaps_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusd);
|
||
else if (hwcaps->i & v9c_hwcaps_mask)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusc);
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusb);
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plusa);
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_v8plus);
|
||
else
|
||
return false;
|
||
}
|
||
else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
|
||
bfd_mach_sparc_sparclite_le);
|
||
else
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
|
||
}
|
||
}
|
||
|
||
/* Return address for Ith PLT stub in section PLT, for relocation REL
|
||
or (bfd_vma) -1 if it should not be included. */
|
||
|
||
bfd_vma
|
||
_bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
|
||
{
|
||
if (ABI_64_P (plt->owner))
|
||
{
|
||
bfd_vma j;
|
||
|
||
i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
|
||
if (i < PLT64_LARGE_THRESHOLD)
|
||
return plt->vma + i * PLT64_ENTRY_SIZE;
|
||
|
||
j = (i - PLT64_LARGE_THRESHOLD) % 160;
|
||
i -= j;
|
||
return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
|
||
}
|
||
else
|
||
return rel->address;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
|
||
bool
|
||
_bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *obfd = info->output_bfd;
|
||
obj_attribute *in_attr, *in_attrs;
|
||
obj_attribute *out_attr, *out_attrs;
|
||
|
||
if (!elf_known_obj_attributes_proc (obfd)[0].i)
|
||
{
|
||
/* This is the first object. Copy the attributes. */
|
||
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
||
|
||
/* Use the Tag_null value to indicate the attributes have been
|
||
initialized. */
|
||
elf_known_obj_attributes_proc (obfd)[0].i = 1;
|
||
|
||
return true;
|
||
}
|
||
|
||
in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
|
||
out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
|
||
|
||
in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
|
||
out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
|
||
|
||
out_attr->i |= in_attr->i;
|
||
out_attr->type = 1;
|
||
|
||
in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
|
||
out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
|
||
|
||
out_attr->i |= in_attr->i;
|
||
out_attr->type = 1;
|
||
|
||
/* Merge Tag_compatibility attributes and any common GNU ones. */
|
||
_bfd_elf_merge_object_attributes (ibfd, info);
|
||
|
||
return true;
|
||
}
|