38 lines
703 B
C
38 lines
703 B
C
|
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
|
||
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
#include <intrin.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "common/types.h"
|
||
|
|
|
||
|
|
namespace Common {
|
||
|
|
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
__forceinline static u64 FencedRDTSC() {
|
||
|
|
_mm_lfence();
|
||
|
|
_ReadWriteBarrier();
|
||
|
|
const u64 result = __rdtsc();
|
||
|
|
_mm_lfence();
|
||
|
|
_ReadWriteBarrier();
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static inline u64 FencedRDTSC() {
|
||
|
|
u64 eax;
|
||
|
|
u64 edx;
|
||
|
|
asm volatile("lfence\n\t"
|
||
|
|
"rdtsc\n\t"
|
||
|
|
"lfence\n\t"
|
||
|
|
: "=a"(eax), "=d"(edx));
|
||
|
|
return (edx << 32) | eax;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
u64 EstimateRDTSCFrequency();
|
||
|
|
|
||
|
|
} // namespace Common
|