| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __ASM_SH_CMPXCHG_CAS_H |
| #define __ASM_SH_CMPXCHG_CAS_H |
| |
| static inline unsigned long |
| __cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new) |
| { |
| __asm__ __volatile__("cas.l %1,%0,@r0" |
| : "+r"(new) |
| : "r"(old), "z"(m) |
| : "t", "memory" ); |
| return new; |
| } |
| |
| static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val) |
| { |
| unsigned long old; |
| do old = *m; |
| while (__cmpxchg_u32(m, old, val) != old); |
| return old; |
| } |
| |
| #include <asm/cmpxchg-xchg.h> |
| |
| #endif /* __ASM_SH_CMPXCHG_CAS_H */ |
