1 files changed, 46 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.nasm b/roms/edk2/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.nasm
new file mode 100644
index 000000000..6200d5ff9
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.nasm
@@ -0,0 +1,46 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   SetMem.Asm
+;
+; Abstract:
+;
+;   SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  InternalMemSetMem (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT8  Value
+;    )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+    push    edi
+    mov         ecx, [esp + 12]
+    mov         al,  [esp + 16]
+    mov         ah,  al
+    shrd        edx, eax, 16
+    shld        eax, edx, 16
+    mov         edx, ecx
+    mov         edi, [esp + 8]
+    shr         ecx, 2
+    rep stosd
+    mov         ecx, edx
+    and         ecx, 3
+    rep stosb
+    mov         eax, [esp + 8]
+    pop     edi
+    ret
+