diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c index 0acfdc9e5c..cb6b8ffe89 100644 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c +++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiCopyMem.c @@ -1,6 +1,6 @@ /*++
-Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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
@@ -58,20 +58,21 @@ Returns: ; if (Source == Destination) => do nothing
; if (Source + Count <= Destination) => regular copy
; if (Destination + Count <= Source) => regular copy
+ ; if (Source >= Destination) => regular copy
; otherwise, do a reverse copy
mov eax, esi
add eax, ecx ; Source + Count
cmp eax, edi
- jle _StartByteCopy
+ jbe _StartByteCopy
mov eax, edi
add eax, ecx ; Dest + Count
cmp eax, esi
- jle _StartByteCopy
+ jbe _StartByteCopy
cmp esi, edi
je _CopyMemDone
- jl _CopyOverlapped ; too bad -- overlaps
+ jb _CopyOverlapped ; too bad -- overlaps
; Pick up misaligned start bytes to get destination pointer 4-byte aligned
_StartByteCopy:
|