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6e3b8c47 1;------------------------------------------------------------------------------\r
2;\r
3; Copyright (c) 2006, Intel Corporation\r
4; All rights reserved. This program and the accompanying materials\r
5; are licensed and made available under the terms and conditions of the BSD License\r
6; which accompanies this distribution. The full text of the license may be found at\r
7; http://opensource.org/licenses/bsd-license.php\r
8;\r
9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11;\r
12; Module Name:\r
13;\r
14; SetMem16.asm\r
15;\r
16; Abstract:\r
17;\r
18; SetMem16 function\r
19;\r
20; Notes:\r
21;\r
22;------------------------------------------------------------------------------\r
23\r
24 .686\r
25 .model flat,C\r
26 .xmm\r
27 .code\r
28\r
29;------------------------------------------------------------------------------\r
30; VOID *\r
31; _mem_SetMem16 (\r
32; IN VOID *Buffer,\r
33; IN UINTN Count,\r
34; IN UINT16 Value\r
35; )\r
36;------------------------------------------------------------------------------\r
37InternalMemSetMem16 PROC USES edi\r
38 mov edx, [esp + 12]\r
39 mov edi, [esp + 8]\r
40 xor ecx, ecx\r
41 sub ecx, edi\r
42 and ecx, 15 ; ecx + edi aligns on 16-byte boundary\r
43 mov eax, [esp + 16]\r
44 jz @F\r
45 shr ecx, 1\r
46 cmp ecx, edx\r
47 cmova ecx, edx\r
48 sub edx, ecx\r
49 rep stosw\r
50@@:\r
51 mov ecx, edx\r
52 and edx, 7\r
53 shr ecx, 3\r
54 jz @SetWords\r
55 movd xmm0, eax\r
56 pshuflw xmm0, xmm0, 0\r
57 movlhps xmm0, xmm0\r
58@@:\r
59 movntdq [edi], xmm0 ; edi should be 16-byte aligned\r
60 add edi, 16\r
61 loop @B\r
62 mfence\r
63@SetWords:\r
64 mov ecx, edx\r
65 rep stosw\r
66 mov eax, [esp + 8]\r
67 ret\r
68InternalMemSetMem16 ENDP\r
69\r
70 END\r