projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| ff3ca569 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
| 9344f092 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| ff3ca569 JJ |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; SetMem32.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; SetMem32 function\r | |
| 13 | ;\r | |
| 14 | ; Notes:\r | |
| 15 | ;\r | |
| 16 | ;------------------------------------------------------------------------------\r | |
| 17 | \r | |
| 18 | SECTION .text\r | |
| 19 | \r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | ; VOID *\r | |
| 22 | ; EFIAPI\r | |
| 23 | ; InternalMemSetMem32 (\r | |
| 24 | ; IN VOID *Buffer,\r | |
| 25 | ; IN UINTN Count,\r | |
| 26 | ; IN UINT32 Value\r | |
| 27 | ; );\r | |
| 28 | ;------------------------------------------------------------------------------\r | |
| 29 | global ASM_PFX(InternalMemSetMem32)\r | |
| 30 | ASM_PFX(InternalMemSetMem32):\r | |
| 31 | push edi\r | |
| 32 | mov edx, [esp + 12]\r | |
| 33 | mov edi, [esp + 8]\r | |
| 34 | xor ecx, ecx\r | |
| 35 | sub ecx, edi\r | |
| 36 | and ecx, 15 ; ecx + edi aligns on 16-byte boundary\r | |
| 37 | mov eax, [esp + 16]\r | |
| 38 | jz .0\r | |
| 39 | shr ecx, 2\r | |
| 40 | cmp ecx, edx\r | |
| 41 | cmova ecx, edx\r | |
| 42 | sub edx, ecx\r | |
| 43 | rep stosd\r | |
| 44 | .0:\r | |
| 45 | mov ecx, edx\r | |
| 46 | and edx, 3\r | |
| 47 | shr ecx, 2\r | |
| 48 | jz @SetDwords\r | |
| 49 | movd xmm0, eax\r | |
| 50 | pshufd xmm0, xmm0, 0\r | |
| 51 | .1:\r | |
| 52 | movntdq [edi], xmm0\r | |
| 53 | add edi, 16\r | |
| 54 | loop .1\r | |
| 55 | mfence\r | |
| 56 | @SetDwords:\r | |
| 57 | mov ecx, edx\r | |
| 58 | rep stosd\r | |
| 59 | mov eax, [esp + 8]\r | |
| 60 | pop edi\r | |
| 61 | ret\r | |
| 62 | \r |