sysdeps/unix/sysv/linux/mips/kernel-features.h

   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