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b8f62ba2 JJ |
1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
9344f092 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
b8f62ba2 JJ |
5 | ;\r |
6 | ; Module Name:\r | |
7 | ;\r | |
8 | ; SetMem32.nasm\r | |
9 | ;\r | |
10 | ; Abstract:\r | |
11 | ;\r | |
12 | ; SetMem32 function\r | |
13 | ;\r | |
14 | ; Notes:\r | |
15 | ;\r | |
16 | ;------------------------------------------------------------------------------\r | |
17 | \r | |
18 | SECTION .text\r | |
19 | \r | |
20 | ;------------------------------------------------------------------------------\r | |
21 | ; VOID *\r | |
22 | ; EFIAPI\r | |
23 | ; InternalMemSetMem32 (\r | |
24 | ; IN VOID *Buffer,\r | |
25 | ; IN UINTN Count,\r | |
26 | ; IN UINT32 Value\r | |
27 | ; );\r | |
28 | ;------------------------------------------------------------------------------\r | |
29 | global ASM_PFX(InternalMemSetMem32)\r | |
30 | ASM_PFX(InternalMemSetMem32):\r | |
31 | mov eax, [esp + 4] ; eax <- Buffer as return value\r | |
32 | mov ecx, [esp + 8] ; ecx <- Count\r | |
33 | movd mm0, dword [esp + 12] ; mm0 <- Value\r | |
34 | shr ecx, 1 ; ecx <- number of qwords to set\r | |
35 | mov edx, eax ; edx <- Buffer\r | |
36 | jz @SetDwords\r | |
37 | movq mm1, mm0\r | |
38 | psllq mm1, 32\r | |
39 | por mm0, mm1\r | |
40 | .0:\r | |
41 | movq qword [edx], mm0\r | |
42 | lea edx, [edx + 8] ; use "lea" to avoid change in flags\r | |
43 | loop .0\r | |
44 | @SetDwords:\r | |
45 | jnc .1\r | |
46 | movd dword [edx], mm0\r | |
47 | .1:\r | |
48 | ret\r | |
49 | \r |