MdePkg BaseMemoryLibSse2: Convert X64/ZeroMem.asm to NASM
The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
X64/ZeroMem.asm to X64/ZeroMem.nasm
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
diff --git a/MdePkg/Library/BaseMemoryLibSse2/BaseMemoryLibSse2.inf b/MdePkg/Library/BaseMemoryLibSse2/BaseMemoryLibSse2.inf
index dd16400..9a9891e 100644
--- a/MdePkg/Library/BaseMemoryLibSse2/BaseMemoryLibSse2.inf
+++ b/MdePkg/Library/BaseMemoryLibSse2/BaseMemoryLibSse2.inf
@@ -101,6 +101,7 @@
X64/ScanMem8.asm
X64/CompareMem.nasm
X64/CompareMem.asm
+ X64/ZeroMem.nasm
X64/ZeroMem.asm
X64/SetMem64.asm
X64/SetMem32.asm
@@ -117,6 +118,7 @@
X64/ScanMem8.S
X64/CompareMem.nasm
X64/CompareMem.S
+ X64/ZeroMem.nasm
X64/ZeroMem.S
X64/SetMem64.S
X64/SetMem32.S
diff --git a/MdePkg/Library/BaseMemoryLibSse2/X64/ZeroMem.nasm b/MdePkg/Library/BaseMemoryLibSse2/X64/ZeroMem.nasm
new file mode 100644
index 0000000..63888cb
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibSse2/X64/ZeroMem.nasm
@@ -0,0 +1,65 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, 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:
+;
+; ZeroMem.nasm
+;
+; Abstract:
+;
+; ZeroMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; InternalMemZeroMem (
+; IN VOID *Buffer,
+; IN UINTN Count
+; )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemZeroMem)
+ASM_PFX(InternalMemZeroMem):
+ push rdi
+ mov rdi, rcx
+ xor rcx, rcx
+ xor eax, eax
+ sub rcx, rdi
+ and rcx, 15
+ mov r8, rdi
+ jz .0
+ cmp rcx, rdx
+ cmova rcx, rdx
+ sub rdx, rcx
+ rep stosb
+.0:
+ mov rcx, rdx
+ and edx, 15
+ shr rcx, 4
+ jz @ZeroBytes
+ pxor xmm0, xmm0
+.1:
+ movntdq [rdi], xmm0 ; rdi should be 16-byte aligned
+ add rdi, 16
+ loop .1
+ mfence
+@ZeroBytes:
+ mov ecx, edx
+ rep stosb
+ mov rax, r8
+ pop rdi
+ ret
+
