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MdePkg: Fix MSFT C4255 warning
[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibOptPei / X64 / SetMem.nasm
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1;------------------------------------------------------------------------------\r
2;\r
3; Copyright (c) 2006 - 2008, 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; SetMem.Asm\r
15;\r
16; Abstract:\r
17;\r
18; SetMem function\r
19;\r
20; Notes:\r
21;\r
22;------------------------------------------------------------------------------\r
23\r
24 DEFAULT REL\r
25 SECTION .text\r
26\r
27;------------------------------------------------------------------------------\r
28; VOID *\r
29; EFIAPI\r
30; InternalMemSetMem (\r
31; IN VOID *Buffer,\r
32; IN UINTN Count,\r
33; IN UINT8 Value\r
34; )\r
35;------------------------------------------------------------------------------\r
36global ASM_PFX(InternalMemSetMem)\r
37ASM_PFX(InternalMemSetMem):\r
38 push rdi\r
39 push rcx ; push Buffer\r
40 mov rax, r8 ; rax = Value\r
41 mov rdi, rcx ; rdi = Buffer\r
42 mov rcx, rdx ; rcx = Count\r
43 rep stosb\r
44 pop rax ; rax = Buffer\r
45 pop rdi\r
46 ret\r
47\r