1 files changed, 72 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S b/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S
new file mode 100644
index 0000000000..eb4ce80e1e
--- /dev/null
+++ b/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S
@@ -0,0 +1,72 @@
+#
+# ConvertAsm.py: Automatically generated from SetMem.asm
+#
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2009, 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.S
+#
+# Abstract:
+#
+#   SetMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  EFIAPI
+#  InternalMemSetMem (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count,
+#    IN UINT8  Value
+#    )
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+    pushq   %rdi
+    movq    %rcx, %rdi                  # rdi <- Buffer
+    movb    %r8b, %al                   # al <- Value
+    movq    %rdi, %r9                   # r9 <- Buffer as return value
+    xorq    %rcx, %rcx
+    subq    %rdi, %rcx
+    andq    $15, %rcx                   # rcx + rdi aligns on 16-byte boundary
+    jz      L0
+    cmpq    %rdx, %rcx
+    cmova   %rdx, %rcx
+    subq    %rcx, %rdx
+    rep     stosb
+L0:
+    movq    %rdx, %rcx
+    andq    $15, %rdx
+    shrq    $4, %rcx
+    jz      L_SetBytes
+    movb    %al, %ah                    # ax <- Value repeats twice
+    movdqa  %xmm0, 0x10(%rsp)           # save xmm0
+    movd    %eax, %xmm0                 # xmm0[0..16] <- Value repeats twice
+    pshuflw $0, %xmm0, %xmm0            # xmm0[0..63] <- Value repeats 8 times
+    movlhps %xmm0, %xmm0                # xmm0 <- Value repeats 16 times
+L1:
+    movntdq %xmm0, (%rdi)               # rdi should be 16-byte aligned
+    add     $16, %rdi
+    loop    L1
+    mfence
+    movdqa  0x10(%rsp), %xmm0           # restore xmm0
+L_SetBytes:
+    movl    %edx, %ecx                  # high 32 bits of rcx are always zero
+    rep     stosb
+    movq    %r9, %rax                   # rax <- Return value
+    popq    %rdi
+    ret