/* Set flags signalling availability of kernel features based on given
kernel version number.
- Copyright (C) 2006-2016 Free Software Foundation, Inc.
+ Copyright (C) 2006-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
+#include <endian.h>
#include_next <kernel-features.h>
/* The ARM kernel before 3.14.3 may or may not support
futex_atomic_cmpxchg_inatomic, depending on kernel
configuration. */
#if __LINUX_KERNEL_VERSION < 0x030E03
-# undef __ASSUME_FUTEX_LOCK_PI
-# undef __ASSUME_REQUEUE_PI
# undef __ASSUME_SET_ROBUST_LIST
#endif
+
+/* ARM fadvise64_64 reorganize the syscall arguments. */
+#define __ASSUME_FADVISE64_64_6ARG 1
+
+/* Define this if your 32-bit syscall API requires 64-bit register
+ pairs to start with an even-number register. */
+#define __ASSUME_ALIGNED_REGISTER_PAIRS 1
+
+/* ARM only has a syscall for fadvise64{_64} and it is defined with a
+ non-standard name. */
+#define __NR_fadvise64_64 __NR_arm_fadvise64_64
+
+#define __ASSUME_RECV_SYSCALL 1
+#define __ASSUME_SEND_SYSCALL 1
+
+/* Support for the mlock2 and copy_file_range syscalls was added to
+ the compat syscall table for 64-bit kernels in 4.7, although
+ present in 32-bit kernels from 4.4 and 4.5 respectively. */
+#if __LINUX_KERNEL_VERSION < 0x040700
+# undef __ASSUME_MLOCK2
+#endif
+
+#undef __ASSUME_CLONE_DEFAULT
+#define __ASSUME_CLONE_BACKWARDS 1
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
+#endif
+
+#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64