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1/* Set flags signalling availability of kernel features based on given
2 kernel version number.
3 Copyright (C) 2006-2019 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#include_next <kernel-features.h>
21
22/* The ARM kernel before 3.14.3 may or may not support
23 futex_atomic_cmpxchg_inatomic, depending on kernel
24 configuration. */
25#if __LINUX_KERNEL_VERSION < 0x030E03
26# undef __ASSUME_SET_ROBUST_LIST
27#endif
28
29/* ARM fadvise64_64 reorganize the syscall arguments. */
30#define __ASSUME_FADVISE64_64_6ARG 1
31
32/* Define this if your 32-bit syscall API requires 64-bit register
33 pairs to start with an even-number register. */
34#define __ASSUME_ALIGNED_REGISTER_PAIRS 1
35
36/* ARM only has a syscall for fadvise64{_64} and it is defined with a
37 non-standard name. */
38#define __NR_fadvise64_64 __NR_arm_fadvise64_64
39
40#define __ASSUME_RECV_SYSCALL 1
41#define __ASSUME_SEND_SYSCALL 1
42
43/* Support for the mlock2 and copy_file_range syscalls was added to
44 the compat syscall table for 64-bit kernels in 4.7, although
45 present in 32-bit kernels from 4.4 and 4.5 respectively. */
46#if __LINUX_KERNEL_VERSION < 0x040700
47# undef __ASSUME_MLOCK2
48# undef __ASSUME_COPY_FILE_RANGE
49#endif
50
51#undef __ASSUME_CLONE_DEFAULT
52#define __ASSUME_CLONE_BACKWARDS 1
53

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