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- /* Set flags signalling availability of kernel features based on given
- kernel version number. SPARC version.
- Copyright (C) 1999-2019 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/>. */
- #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
- /* These syscalls were added for 32-bit in 4.4 (but present for 64-bit
- in all supported kernel versions); the architecture-independent
- kernel-features.h assumes some of them to be present by default.
- getpeername and getsockname syscalls were also added for 32-bit in
- 4.4, but only for 32-bit kernels, not in the compat syscall table
- for 64-bit kernels. */
- #if !defined __arch64__ && __LINUX_KERNEL_VERSION < 0x040400
- # undef __ASSUME_SENDMSG_SYSCALL
- # undef __ASSUME_RECVMSG_SYSCALL
- # undef __ASSUME_ACCEPT_SYSCALL
- # undef __ASSUME_CONNECT_SYSCALL
- # undef __ASSUME_RECVFROM_SYSCALL
- # undef __ASSUME_SENDTO_SYSCALL
- #else
- # define __ASSUME_SOCKET_SYSCALL 1
- # define __ASSUME_SOCKETPAIR_SYSCALL 1
- # define __ASSUME_GETSOCKOPT_SYSCALL 1
- # define __ASSUME_SHUTDOWN_SYSCALL 1
- #endif
- /* These syscalls were added for both 32-bit and 64-bit in 4.4. */
- #if __LINUX_KERNEL_VERSION >= 0x040400
- # define __ASSUME_BIND_SYSCALL 1
- # define __ASSUME_LISTEN_SYSCALL 1
- # define __ASSUME_SETSOCKOPT_SYSCALL 1
- #endif
- #ifdef __arch64__
- /* 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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