projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b8f62ba2 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 |
| b8f62ba2 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 | SECTION .text\r | |
| 19 | \r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | ; VOID *\r | |
| 22 | ; EFIAPI\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 | |
| 31 | mov eax, [esp + 4] ; eax <- Buffer as return value\r | |
| 32 | mov ecx, [esp + 8] ; ecx <- Count\r | |
| 33 | movd mm0, dword [esp + 12] ; mm0 <- Value\r | |
| 34 | shr ecx, 1 ; ecx <- number of qwords to set\r | |
| 35 | mov edx, eax ; edx <- Buffer\r | |
| 36 | jz @SetDwords\r | |
| 37 | movq mm1, mm0\r | |
| 38 | psllq mm1, 32\r | |
| 39 | por mm0, mm1\r | |
| 40 | .0:\r | |
| 41 | movq qword [edx], mm0\r | |
| 42 | lea edx, [edx + 8] ; use "lea" to avoid change in flags\r | |
| 43 | loop .0\r | |
| 44 | @SetDwords:\r | |
| 45 | jnc .1\r | |
| 46 | movd dword [edx], mm0\r | |
| 47 | .1:\r | |
| 48 | ret\r | |
| 49 | \r |