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1/* Machine-dependent ELF indirect relocation inline functions.
2 AArch64 version.
3 Copyright (C) 2012-2019 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#ifndef _DL_IREL_H
21#define _DL_IREL_H
22
23#include <stdio.h>
24#include <unistd.h>
25#include <ldsodefs.h>
26#include <sysdep.h>
27
28#define ELF_MACHINE_IRELA 1
29
30static inline ElfW(Addr)
31__attribute ((always_inline))
32elf_ifunc_invoke (ElfW(Addr) addr)
33{
34 return ((ElfW(Addr) (*) (uint64_t)) (addr)) (GLRO(dl_hwcap));
35}
36
37static inline void
38__attribute ((always_inline))
39elf_irela (const ElfW(Rela) *reloc)
40{
41 ElfW(Addr) *const reloc_addr = (void *) reloc->r_offset;
42 const unsigned long int r_type = ELFW(R_TYPE) (reloc->r_info);
43
44 if (__glibc_likely (r_type == AARCH64_R(IRELATIVE)))
45 {
46 ElfW(Addr) value = elf_ifunc_invoke (reloc->r_addend);
47 *reloc_addr = value;
48 }
49 else
50 __libc_fatal ("Unexpected reloc type in static binary.\n");
51}
52
53#endif
54

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