Fix capitalization issues
[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem.s
1 #------------------------------------------------------------------------------
2 #
3 # Copyright (c) 2006, Intel Corporation
4 # All rights reserved. This program and the accompanying materials
5 # are licensed and made available under the terms and conditions of the BSD License
6 # which accompanies this distribution. The full text of the license may be found at
7 # http://opensource.org/licenses/bsd-license.php
8 #
9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11 #
12 # Module Name:
13 #
14 # SetMem.asm
15 #
16 # Abstract:
17 #
18 # SetMem function
19 #
20 # Notes:
21 #
22 #------------------------------------------------------------------------------
23
24 .686:
25 #.MODEL flat,C
26 .xmm:
27 .code:
28
29 #------------------------------------------------------------------------------
30 # VOID *
31 # _mem_SetMem (
32 # IN VOID *Buffer,
33 # IN UINTN Count,
34 # IN UINT8 Value
35 # )
36 #------------------------------------------------------------------------------
37 .global _InternalMemSetMem
38 _InternalMemSetMem:
39 push %edi
40 movl 12(%esp), %edx # edx <- Count
41 movl 8(%esp), %edi # edi <- Buffer
42 movb 16(%esp), %al # al <- Value
43 xorl %ecx, %ecx
44 subl %edi, %ecx
45 andl $15, %ecx # ecx + edi aligns on 16-byte boundary
46 jz L0
47 cmpl %edx, %ecx
48 cmova %edx, %ecx
49 subl %ecx, %edx
50 rep
51 stosb
52 L0:
53 movl %edx, %ecx
54 andl $15, %edx
55 shrl $4, %ecx # ecx <- # of DQwords to set
56 jz @SetBytes
57 movb %al, %ah # ax <- Value | (Value << 8)
58 addl $-16, %esp
59 movdqu %xmm0, (%esp)
60 movd %eax, %xmm0
61 pshuflw $0, %xmm0, %xmm0
62 movlhps %xmm0, %xmm0
63 L1:
64 movntdq %xmm0, (%edi)
65 addl $16, %edi
66 loop L1
67 mfence
68 movdqu (%esp), %xmm0
69 addl $16, %esp # stack cleanup
70 @SetBytes:
71 movl %edx, %ecx
72 rep
73 stosb
74 movl 8(%esp), %eax # eax <- Buffer as return value
75 pop %edi
76 ret