1 files changed, 24 insertions, 2 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
index e46af81e..f7d65c49 100644
--- a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
+++ b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
@@ -1,6 +1,6 @@
 ;------------------------------------------------------------------------------
 ;
-; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
 ; This program and the accompanying materials
 ; are licensed and made available under the terms and conditions of the BSD License
 ; which accompanies this distribution.  The full text of the license may be found at
@@ -29,12 +29,34 @@ IoReadFifo8 PROC
     mov     dx, [esp + 4]
     mov     ecx, [esp + 8]
     push    edi
-    mov     edx, [esp + 16]
+    mov     edi, [esp + 16]
 rep insb
     pop     edi
     ret
 
 IoReadFifo8 ENDP
 
+
+;------------------------------------------------------------------------------
+;  VOID
+;  EFIAPI
+;  IoWriteFifo8 (
+;    IN UINTN                  Port,
+;    IN UINTN                  Size,
+;    IN VOID                   *Buffer
+;    );
+;------------------------------------------------------------------------------
+IoWriteFifo8 PROC
+
+    mov     dx, [esp + 4]
+    mov     ecx, [esp + 8]
+    push    esi
+    mov     esi, [esp + 16]
+rep outsb
+    pop     esi
+    ret
+
+IoWriteFifo8 ENDP
+
     END