From: bxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 22 Aug 2006 01:36:09 +0000 (+0000)
Subject: Changed GetPerformanceCounter() to use the most efficient mean to unsigned extend... 
X-Git-Tag: edk2-stable201903~24530
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=ddc316e240ca02f352c253481ec0c10684057add;ds=sidebyside

Changed GetPerformanceCounter() to use the most efficient mean to unsigned extend an UINT32 value.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1343 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
index fe18878d19..dd240d88d0 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
+++ b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
@@ -210,8 +210,7 @@ GetPerformanceCounter (
   VOID
   )
 {
-  volatile static UINT64 Mask = 0xffffffff;
-  return InternalX86GetTimerTick (InternalX86GetApicBase ()) & Mask;
+  return (UINT32)InternalX86GetTimerTick (InternalX86GetApicBase ());
 }
 
 /**