1 files changed, 6 insertions, 2 deletions
diff --git a/UefiCpuPkg/Library/BaseUefiCpuLib/Ia32/InitializeFpu.asm b/UefiCpuPkg/Library/BaseUefiCpuLib/Ia32/InitializeFpu.asm
index 55244c72a9..083473311e 100644
--- a/UefiCpuPkg/Library/BaseUefiCpuLib/Ia32/InitializeFpu.asm
+++ b/UefiCpuPkg/Library/BaseUefiCpuLib/Ia32/InitializeFpu.asm
@@ -30,15 +30,18 @@ mMmxControlWord       DD      01F80h
     .xmm
     .code
 
-;
+;
 ; Initializes floating point units for requirement of UEFI specification.
 ;
 ; This function initializes floating-point control word to 0x027F (all exceptions
 ; masked,double-precision, round-to-nearest) and multimedia-extensions control word
 ; (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
-; for masked underflow).
+; for masked underflow).
 ;
 InitializeFloatingPointUnits PROC PUBLIC
+
+    push    ebx
+
     ;
     ; Initialize floating point units
     ;
@@ -67,6 +70,7 @@ InitializeFloatingPointUnits PROC PUBLIC
     ;
     ldmxcsr mMmxControlWord
 Done:
+    pop     ebx
 
     ret