projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 58be35c1 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 |
| 58be35c1 JJ |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; SetMem64.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; SetMem64 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 | ; InternalMemSetMem64 (\r | |
| 24 | ; IN VOID *Buffer,\r | |
| 25 | ; IN UINTN Count,\r | |
| 26 | ; IN UINT64 Value\r | |
| 27 | ; )\r | |
| 28 | ;------------------------------------------------------------------------------\r | |
| 29 | global ASM_PFX(InternalMemSetMem64)\r | |
| 30 | ASM_PFX(InternalMemSetMem64):\r | |
| 31 | mov rax, rcx ; rax <- Buffer\r | |
| 32 | xchg rcx, rdx ; rcx <- Count & rdx <- Buffer\r | |
| 33 | test dl, 8\r | |
| 34 | movq xmm0, r8\r | |
| 35 | jz .0\r | |
| 36 | mov [rdx], r8\r | |
| 37 | add rdx, 8\r | |
| 38 | dec rcx\r | |
| 39 | .0:\r | |
| 40 | shr rcx, 1\r | |
| 41 | jz @SetQwords\r | |
| 42 | movlhps xmm0, xmm0\r | |
| 43 | .1:\r | |
| 44 | movntdq [rdx], xmm0\r | |
| 45 | lea rdx, [rdx + 16]\r | |
| 46 | loop .1\r | |
| 47 | mfence\r | |
| 48 | @SetQwords:\r | |
| 49 | jnc .2\r | |
| 50 | mov [rdx], r8\r | |
| 51 | .2:\r | |
| 52 | ret\r | |
| 53 | \r |