diff options
author | comex <comexk@gmail.com> | 2023-07-02 00:01:11 +0200 |
---|---|---|
committer | comex <comexk@gmail.com> | 2023-07-02 00:01:11 +0200 |
commit | 98685d48e3cb9f25f6919f004ec62cadf33afad2 (patch) | |
tree | 9df2ce7f57370641589bfae7196c77b090bcbe0f /src/common/x64/rdtsc.h | |
parent | PR feedback + constification (diff) | |
parent | Update translations (2023-07-01) (#10972) (diff) | |
download | yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar.gz yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar.bz2 yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar.lz yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar.xz yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.tar.zst yuzu-98685d48e3cb9f25f6919f004ec62cadf33afad2.zip |
Diffstat (limited to '')
-rw-r--r-- | src/common/x64/rdtsc.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/common/x64/rdtsc.h b/src/common/x64/rdtsc.h new file mode 100644 index 000000000..0ec4f52f9 --- /dev/null +++ b/src/common/x64/rdtsc.h @@ -0,0 +1,37 @@ +// 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/common_types.h" + +namespace Common::X64 { + +#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::X64 |