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| author | eric_tian <eric_tian@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-10-22 08:36:39 +0000 |
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| committer | eric_tian <eric_tian@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-10-22 08:36:39 +0000 |
| commit | 4df876adfb234d0c73b8be407ef3436cdce86af5 (patch) | |
| tree | 659cf36c0692390f2200ca46f318480aded1c7f2 /MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S | |
| parent | 710a5b358451cf471ec82fec0637ed6ea8c687b4 (diff) | |
| download | edk2-platforms-4df876adfb234d0c73b8be407ef3436cdce86af5.tar.xz | |
add corresponding .S files for BaseMemoryLibXXX X64 arch. Note that we use ".intel_syntax noprefix" directive to simplify the .S implementation.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6184 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S new file mode 100644 index 0000000000..f8d24cc23e --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S @@ -0,0 +1,58 @@ +# +# ConvertAsm.py: Automatically generated from ZeroMem.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: +# +# ZeroMem.S +# +# Abstract: +# +# ZeroMem function +# +# Notes: +# +#------------------------------------------------------------------------------ + + +#------------------------------------------------------------------------------ +# VOID * +# InternalMemZeroMem ( +# IN VOID *Buffer, +# IN UINTN Count +# ); +#------------------------------------------------------------------------------ +.intel_syntax noprefix +.globl ASM_PFX(InternalMemZeroMem) +ASM_PFX(InternalMemZeroMem): + push rdi + mov rdi, rcx + mov rcx, rdx + mov r8, rdi + and edx, 7 + shr rcx, 3 + jz L_ZeroBytes + pxor mm0, mm0 +L0: + movntq [rdi], mm0 + add rdi, 8 + loop L0 + mfence +L_ZeroBytes: + xor eax, eax + mov ecx, edx + rep stosb + mov rax, r8 + pop rdi + ret + |