1/* Set flags signalling availability of kernel features based on given
 2   kernel version number.
 3   Copyright (C) 2006-2025 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   <https://www.gnu.org/licenses/>.  */
19
20#include <endian.h>
21#include_next <kernel-features.h>
22
23/* The ARM kernel before 3.14.3 may or may not support
24   futex_atomic_cmpxchg_inatomic, depending on kernel
25   configuration.  */
26#if __LINUX_KERNEL_VERSION < 0x030E03
27# undef __ASSUME_SET_ROBUST_LIST
28#endif
29
30/* ARM fadvise64_64 reorganize the syscall arguments.  */
31#define __ASSUME_FADVISE64_64_6ARG	1
32
33/* Define this if your 32-bit syscall API requires 64-bit register
34   pairs to start with an even-number register.  */
35#define __ASSUME_ALIGNED_REGISTER_PAIRS	1
36
37/* ARM only has a syscall for fadvise64{_64} and it is defined with a
38   non-standard name.  */
39#define __NR_fadvise64_64 __NR_arm_fadvise64_64
40
41#define __ASSUME_RECV_SYSCALL   1
42#define __ASSUME_SEND_SYSCALL	1
43
44/* Support for the mlock2 and copy_file_range syscalls was added to
45   the compat syscall table for 64-bit kernels in 4.7, although
46   present in 32-bit kernels from 4.4 and 4.5 respectively.  */
47#if __LINUX_KERNEL_VERSION < 0x040700
48# undef __ASSUME_MLOCK2
49#endif
50
51#undef __ASSUME_CLONE_DEFAULT
52#define __ASSUME_CLONE_BACKWARDS	1
53
54#if __BYTE_ORDER == __BIG_ENDIAN
55# define __ASSUME_SYSVIPC_BROKEN_MODE_T
56#endif
57
58#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64