a533c8df59
For add name@gottpoff(%rip), %reg mov name@gottpoff(%rip), %reg add # define R_X86_64_CODE_4_GOTTPOFF 44 and for lea name@tlsdesc(%rip), %reg add # define R_X86_64_CODE_4_GOTPC32_TLSDESC 45 if the instruction starts at 4 bytes before the relocation offset. They are similar to R_X86_64_GOTTPOFF and R_X86_64_GOTPC32_TLSDESC, respectively. Linker can covert GOTTPOFF to add $name@tpoff, %reg mov $name@tpoff, %reg and GOTPC32_TLSDESC to mov $name@tpoff, %reg mov name@gottpoff(%rip), %reg if the instruction is encoded with the REX2 prefix when possible. bfd/ * elf64-x86-64.c (x86_64_elf_howto_table): Add R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC. (R_X86_64_standard): Updated. (x86_64_reloc_map): Add BFD_RELOC_X86_64_CODE_4_GOTTPOFF and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC. (elf_x86_64_check_tls_transition): Handle R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC. (elf_x86_64_tls_transition): Likewise. (elf_x86_64_scan_relocs): Likewise. (elf_x86_64_relocate_section): Likewise. * reloc.c (bfd_reloc_code_real): Add BFD_RELOC_X86_64_CODE_4_GOTTPOFF and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC. * bfd-in2.h: Regenerated. * libbfd.h: Likewise. gas/ * config/tc-i386.c (tc_i386_fix_adjustable): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC. (md_assemble): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF. (output_insn): Don't add empty REX prefix with REX2 prefix. (output_disp): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC. (md_apply_fix): Likewise. (i386_validate_fix): Generate BFD_RELOC_X86_64_CODE_4_GOTTPOFF or BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC if ixp->fx_tcbit3 is set. (tc_gen_reloc): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC. * testsuite/gas/i386/x86-64-gottpoff.d: New file. * testsuite/gas/i386/x86-64-gottpoff.s: Likewise. * testsuite/gas/i386/x86-64-tlsdesc.d: Likewise. * testsuite/gas/i386/x86-64-tlsdesc.s: Likewise. include/ * elf/x86-64.h (elf_x86_64_reloc_type): Add R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC ld/ * testsuite/ld-x86-64/tlsbindesc.d: Updated. * testsuite/ld-x86-64/tlsbindesc.rd: Likewise. * testsuite/ld-x86-64/tlsbindesc.s: Add R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC tests.
114 lines
5.8 KiB
C
114 lines
5.8 KiB
C
/* x86_64 ELF support for BFD.
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Copyright (C) 2000-2023 Free Software Foundation, Inc.
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Contributed by Jan Hubicka <jh@suse.cz>
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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 Foundation,
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Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef _ELF_X86_64_H
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#define _ELF_X86_64_H
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#include "elf/reloc-macros.h"
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START_RELOC_NUMBERS (elf_x86_64_reloc_type)
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RELOC_NUMBER (R_X86_64_NONE, 0) /* No reloc */
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RELOC_NUMBER (R_X86_64_64, 1) /* Direct 64 bit */
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RELOC_NUMBER (R_X86_64_PC32, 2) /* PC relative 32 bit signed */
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RELOC_NUMBER (R_X86_64_GOT32, 3) /* 32 bit GOT entry */
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RELOC_NUMBER (R_X86_64_PLT32, 4) /* 32 bit PLT address */
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RELOC_NUMBER (R_X86_64_COPY, 5) /* Copy symbol at runtime */
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RELOC_NUMBER (R_X86_64_GLOB_DAT, 6) /* Create GOT entry */
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RELOC_NUMBER (R_X86_64_JUMP_SLOT,7) /* Create PLT entry */
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RELOC_NUMBER (R_X86_64_RELATIVE, 8) /* Adjust by program base */
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RELOC_NUMBER (R_X86_64_GOTPCREL, 9) /* 32 bit signed pc relative
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offset to GOT entry */
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RELOC_NUMBER (R_X86_64_32, 10) /* Direct 32 bit zero extended */
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RELOC_NUMBER (R_X86_64_32S, 11) /* Direct 32 bit sign extended */
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RELOC_NUMBER (R_X86_64_16, 12) /* Direct 16 bit zero extended */
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RELOC_NUMBER (R_X86_64_PC16, 13) /* 16 bit sign extended pc relative*/
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RELOC_NUMBER (R_X86_64_8, 14) /* Direct 8 bit sign extended */
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RELOC_NUMBER (R_X86_64_PC8, 15) /* 8 bit sign extended pc relative*/
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RELOC_NUMBER (R_X86_64_DTPMOD64, 16) /* ID of module containing symbol */
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RELOC_NUMBER (R_X86_64_DTPOFF64, 17) /* Offset in TLS block */
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RELOC_NUMBER (R_X86_64_TPOFF64, 18) /* Offset in initial TLS block */
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RELOC_NUMBER (R_X86_64_TLSGD, 19) /* PC relative offset to GD GOT block */
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RELOC_NUMBER (R_X86_64_TLSLD, 20) /* PC relative offset to LD GOT block */
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RELOC_NUMBER (R_X86_64_DTPOFF32, 21) /* Offset in TLS block */
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RELOC_NUMBER (R_X86_64_GOTTPOFF, 22) /* PC relative offset to IE GOT entry */
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RELOC_NUMBER (R_X86_64_TPOFF32, 23) /* Offset in initial TLS block */
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RELOC_NUMBER (R_X86_64_PC64, 24) /* PC relative 64 bit */
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RELOC_NUMBER (R_X86_64_GOTOFF64, 25) /* 64 bit offset to GOT */
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RELOC_NUMBER (R_X86_64_GOTPC32, 26) /* 32 bit signed pc relative
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offset to GOT */
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RELOC_NUMBER (R_X86_64_GOT64, 27) /* 64 bit GOT entry offset */
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RELOC_NUMBER (R_X86_64_GOTPCREL64, 28) /* 64 bit signed pc relative
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offset to GOT entry */
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RELOC_NUMBER (R_X86_64_GOTPC64, 29) /* 64 bit signed pc relative
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offset to GOT */
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RELOC_NUMBER (R_X86_64_GOTPLT64, 30) /* Obsolete. The same as GOT64. */
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RELOC_NUMBER (R_X86_64_PLTOFF64, 31) /* 64 bit GOT relative offset
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to PLT entry */
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RELOC_NUMBER (R_X86_64_SIZE32, 32) /* 32-bit symbol size */
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RELOC_NUMBER (R_X86_64_SIZE64, 33) /* 64-bit symbol size */
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RELOC_NUMBER (R_X86_64_GOTPC32_TLSDESC, 34)
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/* 32 bit signed pc relative
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offset to TLS descriptor
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in the GOT. */
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RELOC_NUMBER (R_X86_64_TLSDESC_CALL, 35) /* Relaxable call through TLS
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descriptor. */
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RELOC_NUMBER (R_X86_64_TLSDESC, 36) /* 2x64-bit TLS descriptor. */
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RELOC_NUMBER (R_X86_64_IRELATIVE, 37) /* Adjust indirectly by program base */
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RELOC_NUMBER (R_X86_64_RELATIVE64, 38) /* 64bit adjust by program base */
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RELOC_NUMBER (R_X86_64_PC32_BND, 39) /* PC relative 32 bit
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signed with BND prefix */
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RELOC_NUMBER (R_X86_64_PLT32_BND, 40) /* 32 bit PLT address with
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BND prefix */
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/* Load from 32 bit signed pc relative offset to GOT entry without
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REX nor REX2 prefixes, relaxable. */
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RELOC_NUMBER (R_X86_64_GOTPCRELX, 41)
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/* Load from 32 bit signed pc relative offset to GOT entry with
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REX prefix, relaxable. */
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RELOC_NUMBER (R_X86_64_REX_GOTPCRELX, 42)
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/* Load from 32 bit signed pc relative offset to GOT entry if the
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instruction starts at 4 bytes before the relocation offset,
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relaxable. */
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RELOC_NUMBER (R_X86_64_CODE_4_GOTPCRELX, 43)
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/* PC relative offset to IE GOT entry if the instruction starts at
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4 bytes before the relocation offset. */
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RELOC_NUMBER (R_X86_64_CODE_4_GOTTPOFF, 44)
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/* 32 bit signed pc relative offset to TLS descriptor in the GOT if
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instruction starts at 4 bytes before the relocation offset. */
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RELOC_NUMBER (R_X86_64_CODE_4_GOTPC32_TLSDESC, 45)
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RELOC_NUMBER (R_X86_64_GNU_VTINHERIT, 250) /* GNU C++ hack */
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RELOC_NUMBER (R_X86_64_GNU_VTENTRY, 251) /* GNU C++ hack */
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END_RELOC_NUMBERS (R_X86_64_max)
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/* Processor specific section types. */
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#define SHT_X86_64_UNWIND 0x70000001 /* unwind information */
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/* Like SHN_COMMON but the symbol will be allocated in the .lbss
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section. */
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#define SHN_X86_64_LCOMMON (SHN_LORESERVE + 2)
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#define SHF_X86_64_LARGE 0x10000000
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#define DT_X86_64_PLT (DT_LOPROC + 0)
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#define DT_X86_64_PLTSZ (DT_LOPROC + 1)
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#define DT_X86_64_PLTENT (DT_LOPROC + 3)
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#endif
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