| 1 | // SPDX-FileCopyrightText: 2010 Paolo Bonzini <pbonzini@redhat.com> |
| 2 | // |
| 3 | // SPDX-License-Identifier: LGPL-2.1-or-later |
| 4 | |
| 5 | #ifndef _URCU_ARCH_ALPHA_H |
| 6 | #define _URCU_ARCH_ALPHA_H |
| 7 | |
| 8 | /* |
| 9 | * arch_alpha.h: trivial definitions for the Alpha architecture. |
| 10 | */ |
| 11 | |
| 12 | #include <urcu/compiler.h> |
| 13 | #include <urcu/config.h> |
| 14 | #include <urcu/syscall-compat.h> |
| 15 | |
| 16 | #ifdef __cplusplus |
| 17 | extern "C" { |
| 18 | #endif |
| 19 | |
| 20 | #define cmm_mb() __asm__ __volatile__ ("mb":::"memory") |
| 21 | #define cmm_wmb() __asm__ __volatile__ ("wmb":::"memory") |
| 22 | #define cmm_read_barrier_depends() __asm__ __volatile__ ("mb":::"memory") |
| 23 | |
| 24 | /* |
| 25 | * On Linux, define the membarrier system call number if not yet available in |
| 26 | * the system headers. |
| 27 | */ |
| 28 | #if (defined(__linux__) && !defined(__NR_membarrier)) |
| 29 | #define __NR_membarrier 517 |
| 30 | #endif |
| 31 | |
| 32 | #ifdef __cplusplus |
| 33 | } |
| 34 | #endif |
| 35 | |
| 36 | #include <urcu/arch/generic.h> |
| 37 | |
| 38 | #endif /* _URCU_ARCH_ALPHA_H */ |