From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- arch/s390x/atomic_arch.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/s390x/atomic_arch.h (limited to 'arch/s390x/atomic_arch.h') diff --git a/arch/s390x/atomic_arch.h b/arch/s390x/atomic_arch.h new file mode 100644 index 0000000..9b0e1df --- /dev/null +++ b/arch/s390x/atomic_arch.h @@ -0,0 +1,30 @@ +#define a_cas a_cas +static inline int a_cas(volatile int *p, int t, int s) +{ + __asm__ __volatile__ ( + "cs %0, %2, %1" + : "+d"(t), "+Q"(*p) : "d"(s) : "memory", "cc"); + return t; +} + +#define a_cas_p a_cas_p +static inline void *a_cas_p(volatile void *p, void *t, void *s) +{ + __asm__ __volatile__ ( + "csg %0, %2, %1" + : "+d"(t), "+Q"(*(void *volatile *)p) : "d"(s) + : "memory", "cc"); + return t; +} + +#define a_barrier a_barrier +static inline void a_barrier() +{ + __asm__ __volatile__ ("bcr 15,0" : : : "memory"); +} + +#define a_crash a_crash +static inline void a_crash() +{ + __asm__ __volatile__ (".insn e,0"); +} -- cgit v1.2.3