Changed GetPerformanceCounter() to use the most efficient mean to unsigned extend...
authorbxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524>
Tue, 22 Aug 2006 01:36:09 +0000 (01:36 +0000)
committerbxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524>
Tue, 22 Aug 2006 01:36:09 +0000 (01:36 +0000)
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1343 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c

index fe18878..dd240d8 100644 (file)
@@ -210,8 +210,7 @@ GetPerformanceCounter (
   VOID\r
   )\r
 {\r
-  volatile static UINT64 Mask = 0xffffffff;\r
-  return InternalX86GetTimerTick (InternalX86GetApicBase ()) & Mask;\r
+  return (UINT32)InternalX86GetTimerTick (InternalX86GetApicBase ());\r
 }\r
 \r
 /**\r