[PATCH kvm-unit-test 3/6] Export tsc related helpers

Jason Wang
2010-08-27T05:49:33Z

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
lib/x86/processor.h | 22 ++++++++++++++++++++++
x86/tsc.c | 16 +---------------
x86/vmexit.c | 15 ---------------
3 files changed, 23 insertions(+), 30 deletions(-)

diff --git a/lib/x86/processor.h b/lib/x86/processor.h
index 67d7ca5..c348808 100644
--- a/lib/x86/processor.h
+++ b/lib/x86/processor.h
@@ -258,4 +258,26 @@ static inline void sti(void)
asm volatile ("sti");
}

+static inline unsigned long long rdtsc()
+{
+ long long r;
+
+#ifdef __x86_64__
+ unsigned a, d;
+
+ asm volatile ("rdtsc" : "=a"(a), "=d"(d));
+ r = a | ((long long)d << 32);
+#else
+ asm volatile ("rdtsc" : "=A"(r));
+#endif
+ return r;
+}
+
+static inline void wrtsc(u64 tsc)
+{
+ unsigned a = tsc, d = tsc >> 32;
+
+ asm volatile("wrmsr" : : "a"(a), "d"(d), "c"(0x10));
+}
+
#endif
diff --git a/x86/tsc.c b/x86/tsc.c
index 394a9c6..58f332d 100644
--- a/x86/tsc.c
+++ b/x86/tsc.c
@@ -1,19 +1,5 @@
#include "libcflat.h"
-
-u64 rdtsc(void)
-{
- unsigned a, d;
-
- asm volatile("rdtsc" : "=a"(a), "=d"(d));
- return a | (u64)d << 32;
-}
-
-void wrtsc(u64 tsc)
-{
- unsigned a = tsc, d = tsc >> 32;
-
- asm volatile("wrmsr" : : "a"(a), "d"(d), "c"(0x10));
-}
+#include "processor.h"

void test_wrtsc(u64 t1)
{
diff --git a/x86/vmexit.c b/x86/vmexit.c
index 84c384d..551083d 100644
--- a/x86/vmexit.c
+++ b/x86/vmexit.c
@@ -3,21 +3,6 @@
#include "smp.h"
#include "processor.h"

-static inline unsigned long long rdtsc()
-{
- long long r;
-
-#ifdef __x86_64__
- unsigned a, d;
-
- asm volatile ("rdtsc" : "=a"(a), "=d"(d));
- r = a | ((long long)d << 32);
-#else
- asm volatile ("rdtsc" : "=A"(r));
-#endif
- return r;
-}
-
static unsigned int inl(unsigned short port)
{
unsigned int val;