kernel-features.h (2027B) - Raw
1 /* Set flags signalling availability of kernel features based on given 2 kernel version number. 3 Copyright (C) 1999-2025 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 <sgidefs.h> 21 22 #include_next <kernel-features.h> 23 24 /* The MIPS kernel does not support futex_atomic_cmpxchg_inatomic if 25 emulating LL/SC. */ 26 #if __mips == 1 || defined _MIPS_ARCH_R5900 27 # undef __ASSUME_SET_ROBUST_LIST 28 #endif 29 30 /* Define this if your 32-bit syscall API requires 64-bit register 31 pairs to start with an even-number register. */ 32 #if _MIPS_SIM == _ABIO32 33 # define __ASSUME_ALIGNED_REGISTER_PAIRS 1 34 /* mips32 only supports ipc syscall before 5.1. */ 35 # if __LINUX_KERNEL_VERSION < 0x050100 36 # undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS 37 # undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 38 # else 39 # endif 40 41 /* The o32 MIPS fadvise64 syscall behaves as fadvise64_64. */ 42 # define __ASSUME_FADVISE64_AS_64_64 1 43 44 /* mips32 support wire-up network syscalls. */ 45 # define __ASSUME_RECV_SYSCALL 1 46 # define __ASSUME_SEND_SYSCALL 1 47 #else 48 # undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 49 #endif 50 51 /* Define that mips64-n32 is a ILP32 ABI to set the correct interface to 52 pass 64-bits values through syscalls. */ 53 #if _MIPS_SIM == _ABIN32 54 # define __ASSUME_WORDSIZE64_ILP32 1 55 #endif 56 57 #undef __ASSUME_CLONE_DEFAULT 58 #define __ASSUME_CLONE_BACKWARDS 1