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1/* Set flags signalling availability of kernel features based on given
2 kernel version number.
3 Copyright (C) 1999-2022 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 <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
59

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source code of glibc/sysdeps/unix/sysv/linux/mips/kernel-features.h