projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9692aa20 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| d3febfd9 | 3 | ; Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR>\r |
| 9344f092 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 9692aa20 JJ |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; SetMem.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; SetMem function\r | |
| 13 | ;\r | |
| 14 | ; Notes:\r | |
| 15 | ;\r | |
| 16 | ;------------------------------------------------------------------------------\r | |
| 17 | \r | |
| 18 | DEFAULT REL\r | |
| 19 | SECTION .text\r | |
| 20 | \r | |
| 21 | ;------------------------------------------------------------------------------\r | |
| 22 | ; VOID *\r | |
| 23 | ; EFIAPI\r | |
| 24 | ; InternalMemSetMem (\r | |
| 25 | ; OUT VOID *Buffer,\r | |
| 26 | ; IN UINTN Length,\r | |
| 27 | ; IN UINT8 Value\r | |
| 28 | ; );\r | |
| 29 | ;------------------------------------------------------------------------------\r | |
| 30 | global ASM_PFX(InternalMemSetMem)\r | |
| 31 | ASM_PFX(InternalMemSetMem):\r | |
| 32 | push rdi\r | |
| 33 | mov rax, r8\r | |
| 34 | mov ah, al\r | |
| d3febfd9 | 35 | movq mm0, rax\r |
| 9692aa20 JJ |
36 | mov r8, rcx\r |
| 37 | mov rdi, r8 ; rdi <- Buffer\r | |
| 38 | mov rcx, rdx\r | |
| 39 | and edx, 7\r | |
| 40 | shr rcx, 3\r | |
| 41 | jz @SetBytes\r | |
| d3febfd9 | 42 | pshufw mm0, mm0, 0\r |
| 9692aa20 | 43 | .0:\r |
| d3febfd9 | 44 | movntq [rdi], mm0\r |
| 9692aa20 JJ |
45 | add rdi, 8\r |
| 46 | loop .0\r | |
| 47 | mfence\r | |
| 48 | @SetBytes:\r | |
| 49 | mov ecx, edx\r | |
| 50 | rep stosb\r | |
| 51 | mov rax, r8\r | |
| 52 | pop rdi\r | |
| 53 | ret\r | |
| 54 | \r |