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| author | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
|---|---|---|
| committer | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
| commit | 878ddf1fc3540a715f63594ed22b6929e881afb4 (patch) | |
| tree | c56c44dac138137b510e1fba7c3efe5e4d84bea2 /MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm | |
| download | edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.gz edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.bz2 edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.zip | |
Initial import.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm b/MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm new file mode 100644 index 0000000000..a7f1f0e127 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibSse2/ia32/SetMem32.asm @@ -0,0 +1,69 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation
+; All rights reserved. This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; SetMem32.asm
+;
+; Abstract:
+;
+; SetMem32 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ .686
+ .model flat,C
+ .xmm
+ .code
+
+;------------------------------------------------------------------------------
+; VOID *
+; _mem_SetMem32 (
+; IN VOID *Buffer,
+; IN UINTN Count,
+; IN UINT32 Value
+; )
+;------------------------------------------------------------------------------
+InternalMemSetMem32 PROC USES edi
+ mov edx, [esp + 12]
+ mov edi, [esp + 8]
+ xor ecx, ecx
+ sub ecx, edi
+ and ecx, 15 ; ecx + edi aligns on 16-byte boundary
+ mov eax, [esp + 16]
+ jz @F
+ shr ecx, 2
+ cmp ecx, edx
+ cmova ecx, edx
+ sub edx, ecx
+ rep stosd
+@@:
+ mov ecx, edx
+ and edx, 3
+ shr ecx, 2
+ jz @SetDwords
+ movd xmm0, eax
+ pshufd xmm0, xmm0, 0
+@@:
+ movntdq [edi], xmm0
+ add edi, 16
+ loop @B
+ mfence
+@SetDwords:
+ mov ecx, edx
+ rep stosd
+ mov eax, [esp + 8]
+ ret
+InternalMemSetMem32 ENDP
+
+ END
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