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| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-23 09:54:31 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-23 09:54:31 +0000 |
| commit | c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7 (patch) | |
| tree | b648d069cd1eadf70a30e1445dd40268b1f22397 /MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S | |
| parent | b2570da8b7d2154b2d1344f2eb25acac9e6b6578 (diff) | |
| download | edk2-c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7.tar.gz edk2-c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7.tar.bz2 edk2-c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7.zip | |
Import BaseMemoryLibMmx.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3407 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S new file mode 100644 index 0000000000..e3ba6112cd --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S @@ -0,0 +1,53 @@ +#------------------------------------------------------------------------------
+#
+# 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:
+#
+# CompareMem.Asm
+#
+# Abstract:
+#
+# CompareMem function
+#
+# Notes:
+#
+# The following BaseMemoryLib instances share the same version of this file:
+#
+# BaseMemoryLibRepStr
+# BaseMemoryLibMmx
+# BaseMemoryLibSse2
+#
+#------------------------------------------------------------------------------
+
+.globl _InternalMemCompareMem
+
+#------------------------------------------------------------------------------
+# INTN
+# EFIAPI
+# InternalMemCompareMem (
+# IN CONST VOID *DestinationBuffer,
+# IN CONST VOID *SourceBuffer,
+# IN UINTN Length
+# );
+#------------------------------------------------------------------------------
+_InternalMemCompareMem:
+ push %esi
+ push %edi
+ movl 12(%esp), %esi
+ movl 16(%esp), %edi
+ movl 20(%esp), %ecx
+ repe cmpsb
+ movzbl -1(%esi), %eax
+ movzbl -1(%edi), %edx
+ subl %edx, %eax
+ pop %edi
+ pop %esi
+ ret
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