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| 1 | /* Set flags signalling availability of kernel features based on given |
|---|---|
| 2 | kernel version number. |
| 3 | Copyright (C) 2006-2022 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 |
| 59 |
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