diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm index e153495a68..cd000648ae 100644 --- a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm +++ b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.nasm @@ -38,17 +38,29 @@ ASM_PFX(InternalMemSetMem64): add edx, 8
dec ecx
.0:
- shr ecx, 1
+ push ebx
+ mov ebx, ecx
+ and ebx, 7
+ shr ecx, 3
jz @SetQwords
movlhps xmm0, xmm0
.1:
movntdq [edx], xmm0
- lea edx, [edx + 16]
+ movntdq [edx + 16], xmm0
+ movntdq [edx + 32], xmm0
+ movntdq [edx + 48], xmm0
+ lea edx, [edx + 64]
loop .1
mfence
@SetQwords:
- jnc .2
+ test ebx, ebx
+ jz .3
+ mov ecx, ebx
+.2
movq qword [edx], xmm0
-.2:
+ lea edx, [edx + 8]
+ loop .2
+.3:
+ pop ebx
ret
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