summaryrefslogtreecommitdiff
path: root/OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S
diff options
context:
space:
mode:
Diffstat (limited to 'OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S')
-rw-r--r--OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S85
1 files changed, 0 insertions, 85 deletions
diff --git a/OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S b/OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S
deleted file mode 100644
index ddbcbaf1b1..0000000000
--- a/OldMdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.S
+++ /dev/null
@@ -1,85 +0,0 @@
-#------------------------------------------------------------------------------
-#
-# 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:
-#
-# CopyMem.asm
-#
-# Abstract:
-#
-# CopyMem function
-#
-# Notes:
-#
-#------------------------------------------------------------------------------
-
-.globl _InternalMemCopyMem
-
-#------------------------------------------------------------------------------
-# VOID *
-# EFIAPI
-# InternalMemCopyMem (
-# IN VOID *Destination,
-# IN VOID *Source,
-# IN UINTN Count
-# );
-#------------------------------------------------------------------------------
-_InternalMemCopyMem:
- push %esi
- push %edi
- movl 16(%esp), %esi # esi <- Source
- movl 12(%esp), %edi # edi <- Destination
- movl 20(%esp), %edx # edx <- Count
- leal -1(%esi,%edx,), %eax # eax <- End of Source
- cmpl %edi, %esi
- jae L0
- cmpl %edi, %eax # Overlapped?
- jae L_CopyBackward # Copy backward if overlapped
-L0:
- xorl %ecx, %ecx
- subl %edi, %ecx
- andl $15, %ecx # ecx + edi aligns on 16-byte boundary
- jz L1
- cmpl %edx, %ecx
- cmova %edx, %ecx
- subl %ecx, %edx # edx <- remaining bytes to copy
- rep
- movsb
-L1:
- movl %edx, %ecx
- andl $15, %edx
- shrl $4, %ecx # ecx <- # of DQwords to copy
- jz L_CopyBytes
- addl $-16, %esp
- movdqu %xmm0, (%esp)
-L2:
- movdqu (%esi), %xmm0
- movntdq %xmm0, (%edi)
- addl $16, %esi
- addl $16, %edi
- loop L2
- mfence
- movdqu (%esp),%xmm0
- addl $16, %esp # stack cleanup
- jmp L_CopyBytes
-L_CopyBackward:
- movl %eax, %esi # esi <- Last byte in Source
- leal -1(%edi,%edx,), %edi # edi <- Last byte in Destination
- std
-L_CopyBytes:
- movl %edx, %ecx
- rep
- movsb
- cld
- movl 12(%esp), %eax # eax <- Destination as return value
- pop %edi
- pop %esi
- ret