X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibRepStr%2FX64%2FCopyMem.S;h=b3bf6ff61cce0903ddec03f00feae06c6cbb0e6e;hp=fe67040ff6d57983b6dd3dc8fe751faed7707cda;hb=373ade0eb64a522e45b1b94c15b95fb5ab417c00;hpb=73269bfb71137f978fa49e9f80c9ccac15712e59 diff --git a/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S index fe67040ff6..b3bf6ff61c 100644 --- a/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S +++ b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S @@ -1,67 +1,67 @@ -# -# ConvertAsm.py: Automatically generated from CopyMem.asm -# -#------------------------------------------------------------------------------ -# -# 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.S -# -# Abstract: -# -# CopyMem function -# -# Notes: -# -#------------------------------------------------------------------------------ - - -#------------------------------------------------------------------------------ -# VOID * -# EFIAPI -# InternalMemCopyMem ( -# IN VOID *Destination, -# IN VOID *Source, -# IN UINTN Count -# ) -#------------------------------------------------------------------------------ -.intel_syntax -.globl _InternalMemCopyMem -_InternalMemCopyMem: - push rsi - push rdi - mov rsi, rdx # rsi <- Source - mov rdi, rcx # rdi <- Destination - lea r9, [rsi + r8 - 1] # r9 <- End of Source - cmp rsi, rdi - mov rax, rdi # rax <- Destination as return value - jae _InternalMemCopyMem_al_0000 - cmp r9, rdi - jae _atSym_CopyBackward # Copy backward if overlapped -_InternalMemCopyMem_al_0000: - mov rcx, r8 - and r8, 7 - shr rcx, 3 - rep movsq # Copy as many Qwords as possible - jmp _atSym_CopyBytes -_atSym_CopyBackward: - mov rsi, r9 # rsi <- End of Source - lea rdi, [rdi + r8 - 1] # esi <- End of Destination - std # set direction flag -_atSym_CopyBytes: - mov rcx, r8 - rep movsb # Copy bytes backward - cld - pop rdi - pop rsi - ret - +# +# ConvertAsm.py: Automatically generated from CopyMem.asm +# +#------------------------------------------------------------------------------ +# +# Copyright (c) 2006 - 2008, 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.S +# +# Abstract: +# +# CopyMem function +# +# Notes: +# +#------------------------------------------------------------------------------ + + +#------------------------------------------------------------------------------ +# VOID * +# EFIAPI +# InternalMemCopyMem ( +# IN VOID *Destination, +# IN VOID *Source, +# IN UINTN Count +# ) +#------------------------------------------------------------------------------ +.intel_syntax noprefix +.globl ASM_PFX(InternalMemCopyMem) +ASM_PFX(InternalMemCopyMem): + push rsi + push rdi + mov rsi, rdx # rsi <- Source + mov rdi, rcx # rdi <- Destination + lea r9, [rsi + r8 - 1] # r9 <- End of Source + cmp rsi, rdi + mov rax, rdi # rax <- Destination as return value + jae L0 + cmp r9, rdi + jae L_CopyBackward # Copy backward if overlapped +L0: + mov rcx, r8 + and r8, 7 + shr rcx, 3 + rep movsq # Copy as many Qwords as possible + jmp L_CopyBytes +L_CopyBackward: + mov rsi, r9 # rsi <- End of Source + lea rdi, [rdi + r8 - 1] # esi <- End of Destination + std # set direction flag +L_CopyBytes: + mov rcx, r8 + rep movsb # Copy bytes backward + cld + pop rdi + pop rsi + ret +