diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/X64/CopyMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/X64/CopyMem.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibSse2/X64/CopyMem.S deleted file mode 100644 index bf26cd3844554..0000000000000 --- a/MdePkg/Library/BaseMemoryLibSse2/X64/CopyMem.S +++ /dev/null @@ -1,83 +0,0 @@ -# -# ConvertAsm.py: Automatically generated from CopyMem.asm -# -#------------------------------------------------------------------------------ -# -# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> -# 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 -# ) -#------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX(InternalMemCopyMem) -ASM_PFX(InternalMemCopyMem): - pushq %rsi - pushq %rdi - movq %rdx, %rsi # rsi <- Source - movq %rcx, %rdi # rdi <- Destination - leaq -1(%rsi, %r8,), %r9 # r9 <- Last byte of Source - cmpq %rdi, %rsi - movq %rdi, %rax # rax <- Destination as return value - jae L0 # Copy forward if Source > Destination - cmpq %rdi, %r9 # Overlapped? - jae L_CopyBackward # Copy backward if overlapped -L0: - xorq %rcx, %rcx - subq %rdi, %rcx # rcx <- -rdi - andq $15, %rcx # rcx + rsi should be 16 bytes aligned - jz L1 # skip if rcx == 0 - cmpq %r8, %rcx - cmova %r8, %rcx - subq %rcx, %r8 - rep movsb -L1: - movq %r8, %rcx - andq $15, %r8 - shrq $4, %rcx # rcx <- # of DQwords to copy - jz L_CopyBytes - movdqa %xmm0, 0x18(%rsp) # save xmm0 on stack -L2: - movdqu (%rsi), %xmm0 # rsi may not be 16-byte aligned - movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned - addq $16, %rsi - addq $16, %rdi - loop L2 - mfence - movdqa 0x18(%rsp), %xmm0 # restore xmm0 - jmp L_CopyBytes # copy remaining bytes -L_CopyBackward: - movq %r9, %rsi # rsi <- Last byte of Source - leaq -1(%rdi, %r8,), %rdi # rdi <- Last byte of Destination - std -L_CopyBytes: - movq %r8, %rcx - rep movsb - cld - popq %rdi - popq %rsi - ret |