X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseLib%2FIa32%2FLRotU64.asm;h=a6437d868f80fcb34e20d04dc7a6bdbac411989b;hp=1d5562a799c7d1d93336907da0c37d65ed86fd7a;hb=3f566587aea64bb986866c7f69a6b82891bf59db;hpb=31a9215c3223d3818d1709f39d06774e18df103f

diff --git a/MdePkg/Library/BaseLib/Ia32/LRotU64.asm b/MdePkg/Library/BaseLib/Ia32/LRotU64.asm
index 1d5562a799..a6437d868f 100644
--- a/MdePkg/Library/BaseLib/Ia32/LRotU64.asm
+++ b/MdePkg/Library/BaseLib/Ia32/LRotU64.asm
@@ -23,6 +23,14 @@
     .model  flat,C
     .code
 
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; InternalMathLRotU64 (
+;   IN      UINT64                    Operand,
+;   IN      UINTN                     Count
+;   );
+;------------------------------------------------------------------------------
 InternalMathLRotU64 PROC    USES    ebx
     mov     cl, [esp + 16]
     mov     edx, [esp + 12]
@@ -31,7 +39,7 @@ InternalMathLRotU64 PROC    USES    ebx
     shld    edx, eax, cl
     ror     ebx, cl
     shld    eax, ebx, cl
-    test    cl, 32
+    test    cl, 32                      ; Count >= 32?
     cmovnz  ecx, eax
     cmovnz  eax, edx
     cmovnz  edx, ecx