diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S index 814d20c7ce..a29be89a1f 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.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
@@ -34,29 +34,28 @@ # IN UINT8 Value
# )
#------------------------------------------------------------------------------
-.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
- push rdi
- mov rax, r8
- mov ah, al
- movq mm0, rax
- mov r8, rcx
- mov rdi, r8 # rdi <- Buffer
- mov rcx, rdx
- and edx, 7
- shr rcx, 3
+ push %rdi
+ movq %r8, %rax
+ movb %al, %ah
+ movq %rax, %mm0
+ movq %rcx, %r8
+ movq %r8, %rdi # rdi <- Buffer
+ movq %rdx, %rcx
+ andq $7, %rdx
+ shrq $3, %rcx
jz L_SetBytes
- pshufw mm0, mm0, 0x0
+ .byte 0x0f, 0x70, 0x0C0, 0x00
L0:
- movntq [rdi], mm0
- add rdi, 8
+ movntq %mm0, (%rdi)
+ addq $8, %rdi
loop L0
mfence
L_SetBytes:
- mov ecx, edx
- rep stosb
- mov rax, r8
- pop rdi
+ movl %edx, %ecx
+ rep stosb
+ movq %r8, %rax
+ pop %rdi
ret
|