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#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ARM64_GCC_H_
#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ARM64_GCC_H_
namespace google {
namespace protobuf {
namespace internal {
inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
asm volatile ("st4 %0, %1"
: "=r" (*ptr)
: "m" (value));
}
inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
Atomic32 dest;
asm volatile ("ld4s %0, %1"
: "=r" (dest)
: "m" (*ptr));
return dest;
}
inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
asm volatile ("st %0, %1"
: "=r" (*ptr)
: "m" (value));
}
inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
Atomic64 dest;
asm volatile ("ld %0, %1"
: "=r" (dest)
: "m" (*ptr));
return dest;
}
inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
return NoBarrier_Load(ptr);
}
inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
NoBarrier_Store(ptr, value);
}
inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
Atomic64 old_value,
Atomic64 new_value) {
Atomic64 tmp;
asm volatile ("mtspr CMPEXCH_VALUE, %3\n\t"
"cmpexch %0, %1, %2"
: "=r" (tmp), "=m" (*ptr)
: "r" (new_value), "r" (old_value));
return tmp;
}
inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr,
Atomic64 new_value) {
Atomic64 old_value;
asm volatile ("exch %0, %1, %2"
: "=r" (old_value), "=m" (*ptr)
: "r" (new_value));
return old_value;
}
inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
Atomic64 value) {
Atomic64 dest;
asm volatile ("fetchadd %0, %1, %2"
: "=r" (dest), "=m" (*ptr)
: "r" (value));
return *ptr;
}
}
}
}
#endif
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