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554066b8 MS |
1 | /* Machine-dependent ELF indirect relocation inline functions. |
2 | AArch64 version. | |
2b778ceb | 3 | Copyright (C) 2012-2021 Free Software Foundation, Inc. |
554066b8 MS |
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 | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
554066b8 MS |
19 | |
20 | #ifndef _DL_IREL_H | |
21 | #define _DL_IREL_H | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <unistd.h> | |
7520ff8c | 25 | #include <ldsodefs.h> |
389d1f1b | 26 | #include <sysdep.h> |
2b8a3c86 | 27 | #include <sys/ifunc.h> |
554066b8 | 28 | |
7520ff8c | 29 | #define ELF_MACHINE_IRELA 1 |
554066b8 MS |
30 | |
31 | static inline ElfW(Addr) | |
32 | __attribute ((always_inline)) | |
33 | elf_ifunc_invoke (ElfW(Addr) addr) | |
34 | { | |
2b8a3c86 SN |
35 | __ifunc_arg_t arg; |
36 | ||
37 | arg._size = sizeof (arg); | |
38 | arg._hwcap = GLRO(dl_hwcap); | |
39 | arg._hwcap2 = GLRO(dl_hwcap2); | |
40 | return ((ElfW(Addr) (*) (uint64_t, const __ifunc_arg_t *)) (addr)) | |
41 | (GLRO(dl_hwcap) | _IFUNC_ARG_HWCAP, &arg); | |
7520ff8c WN |
42 | } |
43 | ||
44 | static inline void | |
45 | __attribute ((always_inline)) | |
46 | elf_irela (const ElfW(Rela) *reloc) | |
47 | { | |
48 | ElfW(Addr) *const reloc_addr = (void *) reloc->r_offset; | |
49 | const unsigned long int r_type = ELFW(R_TYPE) (reloc->r_info); | |
50 | ||
389d1f1b | 51 | if (__glibc_likely (r_type == AARCH64_R(IRELATIVE))) |
7520ff8c WN |
52 | { |
53 | ElfW(Addr) value = elf_ifunc_invoke (reloc->r_addend); | |
54 | *reloc_addr = value; | |
55 | } | |
56 | else | |
a6e8926f | 57 | __libc_fatal ("Unexpected reloc type in static binary.\n"); |
554066b8 MS |
58 | } |
59 | ||
60 | #endif |