diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptPei/Ia32/ScanMem64.asm')
-rw-r--r-- | MdePkg/Library/BaseMemoryLibOptPei/Ia32/ScanMem64.asm | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ScanMem64.asm b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ScanMem64.asm new file mode 100644 index 0000000000..ca54f13738 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ScanMem64.asm @@ -0,0 +1,62 @@ +;------------------------------------------------------------------------------
+;
+; 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:
+;
+; ScanMem64.Asm
+;
+; Abstract:
+;
+; ScanMem64 function
+;
+; Notes:
+;
+; The following BaseMemoryLib instances share the same version of this file:
+;
+; BaseMemoryLibRepStr
+; BaseMemoryLibMmx
+; BaseMemoryLibSse2
+;
+;------------------------------------------------------------------------------
+
+ .686
+ .model flat,C
+ .code
+
+;------------------------------------------------------------------------------
+; CONST VOID *
+; EFIAPI
+; InternalMemScanMem64 (
+; IN CONST VOID *Buffer,
+; IN UINTN Length,
+; IN UINT64 Value
+; );
+;------------------------------------------------------------------------------
+InternalMemScanMem64 PROC USES edi
+ mov ecx, [esp + 12]
+ mov eax, [esp + 16]
+ mov edx, [esp + 20]
+ mov edi, [esp + 8]
+@@:
+ cmp eax, [edi]
+ lea edi, [edi + 8]
+ loopne @B
+ jne @F
+ cmp edx, [edi - 4]
+ jecxz @F
+ jne @B
+@@:
+ lea eax, [edi - 8]
+ cmovne eax, ecx
+ ret
+InternalMemScanMem64 ENDP
+
+ END
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