diff options
Diffstat (limited to '')
| -rw-r--r-- | src/common/x64/cpu_wait.cpp | 13 | ||||
| -rw-r--r-- | src/common/x64/native_clock.cpp | 13 |
2 files changed, 10 insertions, 16 deletions
diff --git a/src/common/x64/cpu_wait.cpp b/src/common/x64/cpu_wait.cpp index 1fab0bfe8..cfeef6a3d 100644 --- a/src/common/x64/cpu_wait.cpp +++ b/src/common/x64/cpu_wait.cpp @@ -33,16 +33,13 @@ __forceinline static void TPAUSE() { } #else static u64 FencedRDTSC() { - u64 result; + u64 eax; + u64 edx; asm volatile("lfence\n\t" "rdtsc\n\t" - "shl $32, %%rdx\n\t" - "or %%rdx, %0\n\t" - "lfence" - : "=a"(result) - : - : "rdx", "memory", "cc"); - return result; + "lfence\n\t" + : "=a"(eax), "=d"(edx)); + return (edx << 32) | eax; } static void TPAUSE() { diff --git a/src/common/x64/native_clock.cpp b/src/common/x64/native_clock.cpp index 76c66e7ee..277b00662 100644 --- a/src/common/x64/native_clock.cpp +++ b/src/common/x64/native_clock.cpp @@ -27,16 +27,13 @@ __forceinline static u64 FencedRDTSC() { } #else static u64 FencedRDTSC() { - u64 result; + u64 eax; + u64 edx; asm volatile("lfence\n\t" "rdtsc\n\t" - "shl $32, %%rdx\n\t" - "or %%rdx, %0\n\t" - "lfence" - : "=a"(result) - : - : "rdx", "memory", "cc"); - return result; + "lfence\n\t" + : "=a"(eax), "=d"(edx)); + return (edx << 32) | eax; } #endif |