From 861b36d34f1ca198a4509b0a6e439daf4505998c Mon Sep 17 00:00:00 2001
From: Jordan Justen <jordan.l.justen@intel.com>
Date: Mon, 30 May 2016 18:52:12 -0700
Subject: MdePkg BaseMemoryLibSse2: Convert Ia32/SetMem.asm to NASM

The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
Ia32/SetMem.asm to Ia32/SetMem.nasm

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
---
 MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.nasm | 73 +++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.nasm

(limited to 'MdePkg/Library/BaseMemoryLibSse2/Ia32')

diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.nasm b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.nasm
new file mode 100644
index 0000000000..f3d157c4a8
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.nasm
@@ -0,0 +1,73 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;   SetMem.nasm
+;
+; Abstract:
+;
+;   SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  EFIAPI
+;  InternalMemSetMem (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT8  Value
+;    );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+    push    edi
+    mov     edx, [esp + 12]             ; edx <- Count
+    mov     edi, [esp + 8]              ; edi <- Buffer
+    mov     al, [esp + 16]              ; al <- Value
+    xor     ecx, ecx
+    sub     ecx, edi
+    and     ecx, 15                     ; ecx + edi aligns on 16-byte boundary
+    jz      .0
+    cmp     ecx, edx
+    cmova   ecx, edx
+    sub     edx, ecx
+    rep     stosb
+.0:
+    mov     ecx, edx
+    and     edx, 15
+    shr     ecx, 4                      ; ecx <- # of DQwords to set
+    jz      @SetBytes
+    mov     ah, al                      ; ax <- Value | (Value << 8)
+    add     esp, -16
+    movdqu  [esp], xmm0                 ; save xmm0
+    movd    xmm0, eax
+    pshuflw xmm0, xmm0, 0               ; xmm0[0..63] <- Value repeats 8 times
+    movlhps xmm0, xmm0                  ; xmm0 <- Value repeats 16 times
+.1:
+    movntdq [edi], xmm0                 ; edi should be 16-byte aligned
+    add     edi, 16
+    loop    .1
+    mfence
+    movdqu  xmm0, [esp]                 ; restore xmm0
+    add     esp, 16                     ; stack cleanup
+@SetBytes:
+    mov     ecx, edx
+    rep     stosb
+    mov     eax, [esp + 8]              ; eax <- Buffer as return value
+    pop     edi
+    ret
+
-- 
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