projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 24502d71 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
| 4 | ; This program and the accompanying materials\r | |
| 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 | |
| 7 | ; http://opensource.org/licenses/bsd-license.php.\r | |
| 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 | ; SetMem16.nasm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; SetMem16 function\r | |
| 19 | ;\r | |
| 20 | ; Notes:\r | |
| 21 | ;\r | |
| 22 | ;------------------------------------------------------------------------------\r | |
| 23 | \r | |
| 24 | DEFAULT REL\r | |
| 25 | SECTION .text\r | |
| 26 | \r | |
| 27 | ;------------------------------------------------------------------------------\r | |
| 28 | ; VOID *\r | |
| 29 | ; EFIAPI\r | |
| 30 | ; InternalMemSetMem16 (\r | |
| 31 | ; OUT VOID *Buffer,\r | |
| 32 | ; IN UINTN Length,\r | |
| 33 | ; IN UINT16 Value\r | |
| 34 | ; );\r | |
| 35 | ;------------------------------------------------------------------------------\r | |
| 36 | global ASM_PFX(InternalMemSetMem16)\r | |
| 37 | ASM_PFX(InternalMemSetMem16):\r | |
| 38 | push rdi\r | |
| 39 | mov rax, r8\r | |
| 40 | DB 0x48, 0xf, 0x6e, 0xc0 ; movd mm0, rax\r | |
| 41 | mov r8, rcx\r | |
| 42 | mov rdi, r8\r | |
| 43 | mov rcx, rdx\r | |
| 44 | and edx, 3\r | |
| 45 | shr rcx, 2\r | |
| 46 | jz @SetWords\r | |
| 47 | DB 0xf, 0x70, 0xC0, 0x0 ; pshufw mm0, mm0, 0h\r | |
| 48 | .0:\r | |
| 49 | DB 0xf, 0xe7, 0x7 ; movntq [rdi], mm0\r | |
| 50 | add rdi, 8\r | |
| 51 | loop .0\r | |
| 52 | mfence\r | |
| 53 | @SetWords:\r | |
| 54 | mov ecx, edx\r | |
| 55 | rep stosw\r | |
| 56 | mov rax, r8\r | |
| 57 | pop rdi\r | |
| 58 | ret\r | |
| 59 | \r |