diff options
author | qwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-01-24 07:10:05 +0000 |
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committer | qwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-01-24 07:10:05 +0000 |
commit | c7f33ca42470dc87bc41a8583f427883123d67a1 (patch) | |
tree | d9f43956059df355edb7c60ce585fb467889f261 /EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm | |
parent | 2c40a813fc32c5c9aa204b10b037c48f42fe6422 (diff) | |
download | edk2-platforms-c7f33ca42470dc87bc41a8583f427883123d67a1.tar.xz |
1) Sync EdkCompatibilityPkg with EDK 1.04. The changes includes:
1.1) Bug fixes. (For details, please check Documents & files: Snapshot/Release Notes at https://edk.tianocore.org/servlets/ProjectDocumentList?folderID=43&expandFolder=43&folderID=6)
1.2) Add new UEFI protocol definitions for AbsolutePointer, FormBrowser2, HiiConfigAccess, HiiConfigRouting, HiiDatabase, HiiFont, HiiImage, HiiString, SimpleTextInputEx, DPC protocol.
1.3) Add Smbios 2.5, 2.6 supports.
Incompatible changes hilighted:
1) EFI_MANAGED_NETWORK_PROTOCOL_GUID changed.
2) EFI_IP4_IPCONFIG_DATA changed.
2) Add in EdkCompatibilityPkg/EdkCompatibilityPkg.dsc to build all libraries in this package.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4623 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm new file mode 100644 index 0000000000..27b3ca5364 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memcpyRep8.asm @@ -0,0 +1,66 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2007, 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:
+;
+; memcpyRep8.asm
+;
+; Abstract:
+;
+; CopyMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+;------------------------------------------------------------------------------
+; VOID
+; memcpy (
+; OUT VOID *Destination,
+; IN VOID *Source,
+; IN UINTN Count
+; );
+;------------------------------------------------------------------------------
+memcpy PROC USES rsi rdi
+ mov rax, rcx
+ cmp rdx, rcx ; if Source == Destination, do nothing
+ je @CopyMemDone
+ cmp r8, 0 ; if Count == 0, do nothing
+ je @CopyMemDone
+ mov rsi, rdx ; rsi <- Source
+ mov rdi, rcx ; rdi <- Destination
+ lea r9, [rsi + r8 - 1] ; r9 <- End of Source
+ cmp rsi, rdi
+ jae @F
+ cmp r9, rdi
+ jae @CopyBackward ; Copy backward if overlapped
+@@:
+ mov rcx, r8
+ and r8, 7
+ shr rcx, 3
+ rep movsq ; Copy as many Qwords as possible
+ jmp @CopyBytes
+@CopyBackward:
+ mov rsi, r9 ; rsi <- End of Source
+ lea rdi, [rdi + r8 - 1] ; esi <- End of Destination
+ std ; set direction flag
+@CopyBytes:
+ mov rcx, r8
+ rep movsb ; Copy bytes backward
+ cld
+@CopyMemDone:
+ ret
+memcpy ENDP
+
+ END
+
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