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authoreric_tian <eric_tian@6f19259b-4bc3-4df7-8a09-765794883524>2008-10-22 08:36:39 +0000
committereric_tian <eric_tian@6f19259b-4bc3-4df7-8a09-765794883524>2008-10-22 08:36:39 +0000
commit4df876adfb234d0c73b8be407ef3436cdce86af5 (patch)
tree659cf36c0692390f2200ca46f318480aded1c7f2 /MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S
parent710a5b358451cf471ec82fec0637ed6ea8c687b4 (diff)
downloadedk2-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.S58
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
+