1 files changed, 59 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm
new file mode 100644
index 0000000000..c2e4869e47
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm
@@ -0,0 +1,59 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation
+; All rights reserved. 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
+; http://opensource.org/licenses/bsd-license.php
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+;   SetMem32.asm
+;
+; Abstract:
+;
+;   SetMem32 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    .686
+    .model  flat,C
+    .mmx
+    .code
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  EFIAPI
+;  InternalMemSetMem32 (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT32 Value
+;    );
+;------------------------------------------------------------------------------
+InternalMemSetMem32 PROC
+    mov     eax, [esp + 4]              ; eax <- Buffer as return value
+    mov     ecx, [esp + 8]              ; ecx <- Count
+    movd    mm0, [esp + 12]             ; mm0 <- Value
+    shr     ecx, 1                      ; ecx <- number of qwords to set
+    mov     edx, eax                    ; edx <- Buffer
+    jz      @SetDwords
+    movq    mm1, mm0
+    psllq   mm1, 32
+    por     mm0, mm1
+@@:
+    movq    [edx], mm0
+    lea     edx, [edx + 8]              ; use "lea" to avoid change in flags
+    loop    @B
+@SetDwords:
+    jnc     @F
+    movd    [edx], mm0
+@@:
+    ret
+InternalMemSetMem32 ENDP
+
+    END