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-rw-r--r--src/include/cpu/x86/tsc.h14
1 files changed, 4 insertions, 10 deletions
diff --git a/src/include/cpu/x86/tsc.h b/src/include/cpu/x86/tsc.h
index 6943b93018..ddce96bb39 100644
--- a/src/include/cpu/x86/tsc.h
+++ b/src/include/cpu/x86/tsc.h
@@ -41,20 +41,14 @@ static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
tsc->hi = ((a >> 16) * (b >> 16)) + (tsc->hi >> 16);
}
-static inline unsigned long long rdtscll(void)
+static inline uint64_t tsc_to_uint64(tsc_t tstamp)
{
- unsigned long long val;
- asm volatile (
- TSC_SYNC
- "rdtsc"
- : "=A" (val)
- );
- return val;
+ return (((uint64_t)tstamp.hi) << 32) + tstamp.lo;
}
-static inline uint64_t tsc_to_uint64(tsc_t tstamp)
+static inline unsigned long long rdtscll(void)
{
- return (((uint64_t)tstamp.hi) << 32) + tstamp.lo;
+ return tsc_to_uint64(rdtsc());
}
/* Provided by CPU/chipset code for the TSC rate in MHz. */