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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Machine-dependent ELF indirect relocation inline functions.
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x86-64 version.
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Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _DL_IREL_H
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#define _DL_IREL_H
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#include <stdio.h>
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#include <unistd.h>
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#define ELF_MACHINE_IRELA 1
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static inline Elf64_Addr
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__attribute ((always_inline))
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elf_ifunc_invoke (Elf64_Addr addr)
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{
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return ((Elf64_Addr (*) (void)) (addr)) ();
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}
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static inline void
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__attribute ((always_inline))
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elf_irela (const Elf64_Rela *reloc)
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{
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Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
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const unsigned long int r_type = ELF64_R_TYPE (reloc->r_info);
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if (__builtin_expect (r_type == R_X86_64_IRELATIVE, 1))
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{
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Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
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*reloc_addr = value;
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}
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else
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__libc_fatal ("unexpected reloc type in static binary");
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}
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#endif /* dl-irel.h */
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