2 files changed, 18 insertions, 0 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h
index b06e490..9b61d37 100644
--- a/sys/amd64/include/cpufunc.h
+++ b/sys/amd64/include/cpufunc.h
@@ -322,6 +322,15 @@ rdtsc(void)
 	return (low | ((uint64_t)high << 32));
 }
 
+static __inline uint32_t
+rdtsc32(void)
+{
+	uint32_t rv;
+
+	__asm __volatile("rdtsc" : "=a" (rv) : : "edx");
+	return (rv);
+}
+
 static __inline void
 wbinvd(void)
 {
diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h
index 9285499..d6ec534 100644
--- a/sys/i386/include/cpufunc.h
+++ b/sys/i386/include/cpufunc.h
@@ -332,6 +332,15 @@ rdtsc(void)
 	return (rv);
 }
 
+static __inline uint32_t
+rdtsc32(void)
+{
+	uint32_t rv;
+
+	__asm __volatile("rdtsc" : "=a" (rv) : : "edx");
+	return (rv);
+}
+
 static __inline void
 wbinvd(void)
 {