Import some basic libraries instances for Mde Packages.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem16.asm

diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm
new file mode 100644 (file)
index 0000000..93ce0af
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm
@@ -0,0 +1,76 @@
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2006, Intel Corporation\r
+; All rights reserved. This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution.  The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+;   SetMem16.asm\r
+;\r
+; Abstract:\r
+;\r
+;   SetMem16 function\r
+;\r
+; Notes:\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+    .686\r
+    .model  flat,C\r
+    .xmm\r
+    .code\r
+\r
+;------------------------------------------------------------------------------\r
+;  VOID *\r
+;  EFIAPI\r
+;  InternalMemSetMem16 (\r
+;    IN VOID   *Buffer,\r
+;    IN UINTN  Count,\r
+;    IN UINT16 Value\r
+;    );\r
+;------------------------------------------------------------------------------\r
+InternalMemSetMem16 PROC    USES    edi\r
+    mov     edx, [esp + 12]\r
+    mov     edi, [esp + 8]\r
+    xor     ecx, ecx\r
+    sub     ecx, edi\r
+    and     ecx, 15                     ; ecx + edi aligns on 16-byte boundary\r
+    mov     eax, [esp + 16]\r
+    jz      @F\r
+    shr     ecx, 1\r
+    cmp     ecx, edx\r
+    cmova   ecx, edx\r
+    sub     edx, ecx\r
+    rep     stosw\r
+@@:\r
+    mov     ecx, edx\r
+    and     edx, 7\r
+    shr     ecx, 3\r
+    jz      @SetWords\r
+    movd    xmm0, eax\r
+    pshuflw xmm0, xmm0, 0\r
+    movlhps xmm0, xmm0\r
+@@:\r
+    movntdq [edi], xmm0                 ; edi should be 16-byte aligned\r
+    add     edi, 16\r
+    loop    @B\r
+    mfence\r
+@SetWords:\r
+    mov     ecx, edx\r
+    rep     stosw\r
+    mov     eax, [esp + 8]\r
+    ret\r
+InternalMemSetMem16 ENDP\r
+\r
+    END\r