1  /* Set flags signalling availability of kernel features based on given
       2     kernel version number.
       3     Copyright (C) 1999-2023 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