projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| db75a3d6 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 |
| db75a3d6 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 | DEFAULT REL\r | |
| 19 | SECTION .text\r | |
| 20 | \r | |
| 21 | ;------------------------------------------------------------------------------\r | |
| 22 | ; VOID *\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 | |
| d3febfd9 | 31 | movq mm0, r8\r |
| db75a3d6 JJ |
32 | mov rax, rcx ; rax <- Buffer\r |
| 33 | xchg rcx, rdx ; rcx <- Count rdx <- Buffer\r | |
| 34 | shr rcx, 1 ; rcx <- # of qwords to set\r | |
| 35 | jz @SetDwords\r | |
| d3febfd9 | 36 | pshufw mm0, mm0, 44h\r |
| db75a3d6 | 37 | .0:\r |
| d3febfd9 | 38 | movntq [rdx], mm0\r |
| db75a3d6 JJ |
39 | lea rdx, [rdx + 8] ; use "lea" to avoid flag changes\r |
| 40 | loop .0\r | |
| 41 | mfence\r | |
| 42 | @SetDwords:\r | |
| 43 | jnc .1\r | |
| d3febfd9 | 44 | movd [rdx], mm0\r |
| db75a3d6 JJ |
45 | .1:\r |
| 46 | ret\r | |
| 47 | \r |