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/* Set flags signalling availability of kernel features based on given
kernel version number. SPARC version.
Copyright (C) 1999-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* SPARC uses socketcall. */
#define __ASSUME_SOCKETCALL 1
#include_next <kernel-features.h>
/* 32-bit SPARC kernels do not support
futex_atomic_cmpxchg_inatomic. */
#if !defined __arch64__ && !defined __sparc_v9__
# undef __ASSUME_SET_ROBUST_LIST
#endif
#if !defined __arch64__
# undef __ASSUME_ACCEPT_SYSCALL
# undef __ASSUME_CONNECT_SYSCALL
# undef __ASSUME_RECVFROM_SYSCALL
#else
/* sparc64 defines __NR_pause, however it is not supported (ENOSYS).
Undefine so pause.c can use a correct alternative. */
# undef __NR_pause
#endif
/* sparc only supports ipc syscall. */
#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
/* Support for the renameat2 syscall was added in 3.16. */
#if __LINUX_KERNEL_VERSION < 0x031000
# undef __ASSUME_RENAMEAT2
#endif
/* SPARC kernel Kconfig does not define CONFIG_CLONE_BACKWARDS, however it
has the same ABI as if it did, implemented by sparc-specific code
(sparc_do_fork).
It also has a unique return value convention:
Parent --> %o0 == child's pid, %o1 == 0
Child --> %o0 == parent's pid, %o1 == 1
Which required a special macro to correct issue the syscall
(INLINE_CLONE_SYSCALL). */
#undef __ASSUME_CLONE_DEFAULT
#define __ASSUME_CLONE_BACKWARDS 1
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