diff options
| author | Warner Losh <imp@FreeBSD.org> | 2017-03-07 20:53:26 +0000 |
|---|---|---|
| committer | Warner Losh <imp@FreeBSD.org> | 2017-03-07 20:53:26 +0000 |
| commit | 0499b37cea9ca98acfe36368e521ad36b7783f2d (patch) | |
| tree | 7968fdc8d6edf3e051bbd434a466eca88aacf938 /MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm | |
Notes
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm new file mode 100644 index 0000000000000..6086415f7f940 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem16.asm @@ -0,0 +1,71 @@ +;------------------------------------------------------------------------------ +; +; 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: +; +; SetMem16.asm +; +; Abstract: +; +; SetMem16 function +; +; Notes: +; +;------------------------------------------------------------------------------ + + .686 + .model flat,C + .xmm + .code + +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemSetMem16 ( +; IN VOID *Buffer, +; IN UINTN Count, +; IN UINT16 Value +; ); +;------------------------------------------------------------------------------ +InternalMemSetMem16 PROC USES edi + mov edx, [esp + 12] + mov edi, [esp + 8] + xor ecx, ecx + sub ecx, edi + and ecx, 15 ; ecx + edi aligns on 16-byte boundary + mov eax, [esp + 16] + jz @F + shr ecx, 1 + cmp ecx, edx + cmova ecx, edx + sub edx, ecx + rep stosw +@@: + mov ecx, edx + and edx, 7 + shr ecx, 3 + jz @SetWords + movd xmm0, eax + pshuflw xmm0, xmm0, 0 + movlhps xmm0, xmm0 +@@: + movntdq [edi], xmm0 ; edi should be 16-byte aligned + add edi, 16 + loop @B + mfence +@SetWords: + mov ecx, edx + rep stosw + mov eax, [esp + 8] + ret +InternalMemSetMem16 ENDP + + END |