projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| c5ecf6c1 | 1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 085c3968 HT |
3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r |
| 4 | ; This program and the accompanying materials\r | |
| c5ecf6c1 | 5 | ; are licensed and made available under the terms and conditions of the BSD License\r |
| 6 | ; which accompanies this distribution. The full text of the license may be found at\r | |
| 2fc59a00 | 7 | ; http://opensource.org/licenses/bsd-license.php.\r |
| c5ecf6c1 | 8 | ;\r |
| 9 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | ;\r | |
| 12 | ; Module Name:\r | |
| 13 | ;\r | |
| 14 | ; SetMem32.asm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; SetMem32 function\r | |
| 19 | ;\r | |
| 20 | ; Notes:\r | |
| 21 | ;\r | |
| 22 | ;------------------------------------------------------------------------------\r | |
| 23 | \r | |
| 24 | .code\r | |
| 25 | \r | |
| 26 | ;------------------------------------------------------------------------------\r | |
| 27 | ; VOID *\r | |
| 28 | ; InternalMemSetMem32 (\r | |
| 29 | ; IN VOID *Buffer,\r | |
| 30 | ; IN UINTN Count,\r | |
| 31 | ; IN UINT32 Value\r | |
| 32 | ; )\r | |
| 33 | ;------------------------------------------------------------------------------\r | |
| 34 | InternalMemSetMem32 PROC\r | |
| 35 | DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value)\r | |
| 36 | mov rax, rcx ; rax <- Buffer\r | |
| 37 | xchg rcx, rdx ; rcx <- Count rdx <- Buffer\r | |
| 38 | shr rcx, 1 ; rcx <- # of qwords to set\r | |
| 39 | jz @SetDwords\r | |
| 40 | DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h\r | |
| 41 | @@:\r | |
| 42 | DB 0fh, 0e7h, 02h ; movntq [rdx], mm0\r | |
| 43 | lea rdx, [rdx + 8] ; use "lea" to avoid flag changes\r | |
| 44 | loop @B\r | |
| 45 | mfence\r | |
| 46 | @SetDwords:\r | |
| 47 | jnc @F\r | |
| 48 | DB 0fh, 7eh, 02h ; movd [rdx], mm0\r | |
| 49 | @@:\r | |
| 50 | ret\r | |
| 51 | InternalMemSetMem32 ENDP\r | |
| 52 | \r | |
| 53 | END\r |