MdePkg BaseMemoryLibOptDxe: Convert X64/SetMem.asm to NASM
The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
X64/SetMem.asm to X64/SetMem.nasm
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/BaseMemoryLibOptDxe.inf b/MdePkg/Library/BaseMemoryLibOptDxe/BaseMemoryLibOptDxe.inf
index 1e05d05..b5e750a 100644
--- a/MdePkg/Library/BaseMemoryLibOptDxe/BaseMemoryLibOptDxe.inf
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/BaseMemoryLibOptDxe.inf
@@ -119,6 +119,7 @@
X64/SetMem16.nasm
X64/SetMem16.asm
X64/SetMem16.S
+ X64/SetMem.nasm
X64/SetMem.asm
X64/SetMem.S
X64/CopyMem.asm
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.nasm b/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.nasm
new file mode 100644
index 0000000..0c4b651
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.nasm
@@ -0,0 +1,62 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006 - 2008, 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:
+;
+; SetMem.Asm
+;
+; Abstract:
+;
+; SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; EFIAPI
+; InternalMemSetMem (
+; IN VOID *Buffer,
+; IN UINTN Count,
+; IN UINT8 Value
+; )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+ push rdi
+ push rbx
+ push rcx ; push Buffer
+ mov rax, r8 ; rax = Value
+ and rax, 0xff ; rax = lower 8 bits of r8, upper 56 bits are 0
+ mov ah, al ; ah = al
+ mov bx, ax ; bx = ax
+ shl rax, 0x10 ; rax = ax << 16
+ mov ax, bx ; ax = bx
+ mov rbx, rax ; ebx = eax
+ shl rax, 0x20 ; rax = rax << 32
+ or rax, rbx ; eax = ebx
+ mov rdi, rcx ; rdi = Buffer
+ mov rcx, rdx ; rcx = Count
+ shr rcx, 3 ; rcx = rcx / 8
+ cld
+ rep stosq
+ mov rcx, rdx ; rcx = rdx
+ and rcx, 7 ; rcx = rcx & 7
+ rep stosb
+ pop rax ; rax = Buffer
+ pop rbx
+ pop rdi
+ ret
+
