diff options
| 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/BaseMemoryLibRepStr/x64/ScanMem8.asm | |
| download | edk2-platforms-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.xz | |
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/BaseMemoryLibRepStr/x64/ScanMem8.asm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm b/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm new file mode 100644 index 0000000000..4027ece768 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm @@ -0,0 +1,42 @@ +;------------------------------------------------------------------------------
+;
+; 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:
+;
+; ScanMem8.Asm
+;
+; Abstract:
+;
+; ScanMem8 function
+;
+; Notes:
+;
+; The following BaseMemoryLib instances share the same version of this file:
+;
+; BaseMemoryLibRepStr
+; BaseMemoryLibMmx
+; BaseMemoryLibSse2
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+InternalMemScanMem8 PROC USES rdi
+ mov rdi, rcx
+ mov rcx, rdx
+ mov rax, r8
+ repne scasb
+ lea rax, [rdi - 1]
+ cmovnz rax, rcx ; set rax to 0 if not found
+ ret
+InternalMemScanMem8 ENDP
+
+ END
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