diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S index adfbb0c42e..a9565ce97a 100644 --- a/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S +++ b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S @@ -3,7 +3,7 @@ #
#------------------------------------------------------------------------------
#
-# Copyright (c) 2006 - 2008, Intel Corporation
+# Copyright (c) 2006 - 2009, 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
@@ -33,29 +33,28 @@ # IN UINT64 Value
# )
#------------------------------------------------------------------------------
-.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
ASM_PFX(InternalMemSetMem64):
- mov rax, rcx # rax <- Buffer
- xchg rcx, rdx # rcx <- Count & rdx <- Buffer
- test dl, 8
- movq xmm0, r8
+ movq %rcx, %rax # rax <- Buffer
+ xchgq %rdx, %rcx # rcx <- Count & rdx <- Buffer
+ testb $8, %dl
+ movq %r8, %xmm0
jz L0
- mov [rdx], r8
- add rdx, 8
- dec rcx
+ movq %r8, (%rdx)
+ addq $8, %rdx
+ decq %rcx
L0:
- shr rcx, 1
+ shrq $1, %rcx
jz L_SetQwords
- movlhps xmm0, xmm0
+ movlhps %xmm0, %xmm0
L1:
- movntdq [rdx], xmm0
- lea rdx, [rdx + 16]
+ movntdq %xmm0, (%rdx)
+ leaq 16(%rdx), %rdx
loop L1
mfence
L_SetQwords:
jnc L2
- mov [rdx], r8
+ movq %r8, (%rdx)
L2:
ret
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