diff options
Diffstat (limited to 'OldMdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S')
| -rw-r--r-- | OldMdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S b/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S deleted file mode 100644 index 349356fb1f..0000000000 --- a/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S +++ /dev/null @@ -1,86 +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 %esi, %ecx - andl $7, %ecx # ecx + esi aligns on 8-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 $7, %edx - shrl $3, %ecx # ecx <- # of Qwords to copy - jz L_CopyBytes - pushl %eax - pushl %eax - movq %mm0, (%esp) # save mm0 -L2: - movq (%esi), %mm0 - movq %mm0, (%edi) - addl $8, %esi - addl $8, %edi - loop L2 - movq (%esp), %mm0 # restore mm0 - popl %ecx # stack cleanup - popl %ecx # 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 - pop %edi - pop %esi - ret |