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631f060b | 1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
adc29a97 HT |
3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r |
4 | ; This program and the accompanying materials\r | |
631f060b | 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 | |
2fc59a00 | 7 | ; http://opensource.org/licenses/bsd-license.php.\r |
631f060b | 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 | ; ZeroMem.Asm\r | |
15 | ;\r | |
16 | ; Abstract:\r | |
17 | ;\r | |
18 | ; ZeroMem function\r | |
19 | ;\r | |
20 | ; Notes:\r | |
21 | ;\r | |
22 | ;------------------------------------------------------------------------------\r | |
23 | \r | |
24 | .code\r | |
25 | \r | |
26 | ;------------------------------------------------------------------------------\r | |
27 | ; VOID *\r | |
28 | ; InternalMemZeroMem (\r | |
29 | ; IN VOID *Buffer,\r | |
30 | ; IN UINTN Count\r | |
31 | ; );\r | |
32 | ;------------------------------------------------------------------------------\r | |
33 | InternalMemZeroMem PROC USES rdi\r | |
34 | push rcx ; push Buffer\r | |
35 | xor rax, rax ; rax = 0\r | |
36 | mov rdi, rcx ; rdi = Buffer\r | |
37 | mov rcx, rdx ; rcx = Count\r | |
38 | shr rcx, 3 ; rcx = rcx / 8\r | |
39 | and rdx, 7 ; rdx = rdx & 7\r | |
40 | cld\r | |
41 | rep stosq\r | |
42 | mov rcx, rdx ; rcx = rdx\r | |
43 | rep stosb\r | |
44 | pop rax ; rax = Buffer\r | |
45 | ret\r | |
46 | InternalMemZeroMem ENDP\r | |
47 | \r | |
48 | END\r |