4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync;------------------------------------------------------------------------------
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; Module Name:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; CopyMem function
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync;------------------------------------------------------------------------------
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync;------------------------------------------------------------------------------
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; InternalMemCopyMem (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; IN VOID *Destination,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; IN VOID *Source,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync; IN UINTN Count
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync;------------------------------------------------------------------------------
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncInternalMemCopyMem PROC USES rsi rdi
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rsi, rdx ; rsi <- Source
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rdi, rcx ; rdi <- Destination
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync lea r9, [rsi + r8 - 1] ; r9 <- End of Source
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cmp rsi, rdi
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rax, rdi ; rax <- Destination as return value
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cmp r9, rdi
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync jae @CopyBackward ; Copy backward if overlapped
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rcx, r8
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync rep movsq ; Copy as many Qwords as possible
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync jmp @CopyBytes
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync@CopyBackward:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rsi, r9 ; rsi <- End of Source
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync lea rdi, [rdi + r8 - 1] ; esi <- End of Destination
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync std ; set direction flag
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov rcx, r8
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync rep movsb ; Copy bytes backward
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncInternalMemCopyMem ENDP