+++ /dev/null
-;------------------------------------------------------------------------------\r
-;\r
-; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
-; This program and the accompanying materials\r
-; are licensed and made available under the terms and conditions of the BSD License\r
-; which accompanies this distribution. The full text of the license may be found at\r
-; http://opensource.org/licenses/bsd-license.php.\r
-;\r
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-;\r
-; Module Name:\r
-;\r
-; SetMem.asm\r
-;\r
-; Abstract:\r
-;\r
-; SetMem function\r
-;\r
-; Notes:\r
-;\r
-;------------------------------------------------------------------------------\r
-\r
- .686\r
- .model flat,C\r
- .xmm\r
- .code\r
-\r
-;------------------------------------------------------------------------------\r
-; VOID *\r
-; EFIAPI\r
-; InternalMemSetMem (\r
-; IN VOID *Buffer,\r
-; IN UINTN Count,\r
-; IN UINT8 Value\r
-; );\r
-;------------------------------------------------------------------------------\r
-InternalMemSetMem PROC USES edi\r
- mov edx, [esp + 12] ; edx <- Count\r
- mov edi, [esp + 8] ; edi <- Buffer\r
- mov al, [esp + 16] ; al <- Value\r
- xor ecx, ecx\r
- sub ecx, edi\r
- and ecx, 15 ; ecx + edi aligns on 16-byte boundary\r
- jz @F\r
- cmp ecx, edx\r
- cmova ecx, edx\r
- sub edx, ecx\r
- rep stosb\r
-@@:\r
- mov ecx, edx\r
- and edx, 15\r
- shr ecx, 4 ; ecx <- # of DQwords to set\r
- jz @SetBytes\r
- mov ah, al ; ax <- Value | (Value << 8)\r
- add esp, -16\r
- movdqu [esp], xmm0 ; save xmm0\r
- movd xmm0, eax\r
- pshuflw xmm0, xmm0, 0 ; xmm0[0..63] <- Value repeats 8 times\r
- movlhps xmm0, xmm0 ; xmm0 <- Value repeats 16 times\r
-@@:\r
- movntdq [edi], xmm0 ; edi should be 16-byte aligned\r
- add edi, 16\r
- loop @B\r
- mfence\r
- movdqu xmm0, [esp] ; restore xmm0\r
- add esp, 16 ; stack cleanup\r
-@SetBytes:\r
- mov ecx, edx\r
- rep stosb\r
- mov eax, [esp + 8] ; eax <- Buffer as return value\r
- ret\r
-InternalMemSetMem ENDP\r
-\r
- END\r