X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=DuetPkg%2FEfiLdr%2FTianoDecompress.c;fp=DuetPkg%2FEfiLdr%2FTianoDecompress.c;h=695f5162fcbf58a96d76d02a407cf5d9e36c99de;hp=b504e8e1d4dcd12248bd2a77aff90b4087bfecae;hb=aa1d330b22c1d02796bfe95ba1de539374804422;hpb=59bc913c10a2296b0c5c83e4024c8b91000c8c8c

diff --git a/DuetPkg/EfiLdr/TianoDecompress.c b/DuetPkg/EfiLdr/TianoDecompress.c
index b504e8e1d4..695f5162fc 100644
--- a/DuetPkg/EfiLdr/TianoDecompress.c
+++ b/DuetPkg/EfiLdr/TianoDecompress.c
@@ -93,11 +93,11 @@ Returns: (VOID)
 
 --*/
 {
-  Sd->mBitBuf = (UINT32) (Sd->mBitBuf << NumOfBits);
+  Sd->mBitBuf = (UINT32) LShiftU64 (((UINT64)Sd->mBitBuf), NumOfBits);
 
   while (NumOfBits > Sd->mBitCount) {
-
-    Sd->mBitBuf |= (UINT32) (Sd->mSubBitBuf << (NumOfBits = (UINT16) (NumOfBits - Sd->mBitCount)));
+    NumOfBits = (UINT16) (NumOfBits - Sd->mBitCount);
+    Sd->mBitBuf |= (UINT32) LShiftU64 (((UINT64)Sd->mSubBitBuf), NumOfBits);
 
     if (Sd->mCompSize > 0) {
       //