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1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
4 | ; 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.nasm\r | |
15 | ;\r | |
16 | ; Abstract:\r | |
17 | ;\r | |
18 | ; SetMem16 function\r | |
19 | ;\r | |
20 | ; Notes:\r | |
21 | ;\r | |
22 | ;------------------------------------------------------------------------------\r | |
23 | \r | |
24 | SECTION .text\r | |
25 | \r | |
26 | ;------------------------------------------------------------------------------\r | |
27 | ; VOID *\r | |
28 | ; EFIAPI\r | |
29 | ; InternalMemSetMem16 (\r | |
30 | ; IN VOID *Buffer,\r | |
31 | ; IN UINTN Count,\r | |
32 | ; IN UINT16 Value\r | |
33 | ; );\r | |
34 | ;------------------------------------------------------------------------------\r | |
35 | global ASM_PFX(InternalMemSetMem16)\r | |
36 | ASM_PFX(InternalMemSetMem16):\r | |
37 | push 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 .0\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 | .0:\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 | .1:\r | |
59 | movntdq [edi], xmm0 ; edi should be 16-byte aligned\r | |
60 | add edi, 16\r | |
61 | loop .1\r | |
62 | mfence\r | |
63 | @SetWords:\r | |
64 | mov ecx, edx\r | |
65 | rep stosw\r | |
66 | mov eax, [esp + 8]\r | |
67 | pop edi\r | |
68 | ret\r | |
69 | \r |