projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 76fd76d6 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 | ; SetMem.nasm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; SetMem function\r | |
| 19 | ;\r | |
| 20 | ; Notes:\r | |
| 21 | ;\r | |
| 22 | ;------------------------------------------------------------------------------\r | |
| 23 | \r | |
| 24 | SECTION .text\r | |
| 25 | \r | |
| 26 | ;------------------------------------------------------------------------------\r | |
| 27 | ; VOID *\r | |
| 28 | ; EFIAPI\r | |
| 29 | ; InternalMemSetMem (\r | |
| 30 | ; IN VOID *Buffer,\r | |
| 31 | ; IN UINTN Count,\r | |
| 32 | ; IN UINT8 Value\r | |
| 33 | ; )\r | |
| 34 | ;------------------------------------------------------------------------------\r | |
| 35 | global ASM_PFX(InternalMemSetMem)\r | |
| 36 | ASM_PFX(InternalMemSetMem):\r | |
| 37 | push edi\r | |
| 38 | mov al, [esp + 16]\r | |
| 39 | mov ah, al\r | |
| 40 | shrd edx, eax, 16\r | |
| 41 | shld eax, edx, 16\r | |
| 42 | mov ecx, [esp + 12] ; ecx <- Count\r | |
| 43 | mov edi, [esp + 8] ; edi <- Buffer\r | |
| 44 | mov edx, ecx\r | |
| 45 | and edx, 7\r | |
| 46 | shr ecx, 3 ; # of Qwords to set\r | |
| 47 | jz @SetBytes\r | |
| 48 | add esp, -0x10\r | |
| 49 | movq [esp], mm0 ; save mm0\r | |
| 50 | movq [esp + 8], mm1 ; save mm1\r | |
| 51 | movd mm0, eax\r | |
| 52 | movd mm1, eax\r | |
| 53 | psllq mm0, 32\r | |
| 54 | por mm0, mm1 ; fill mm0 with 8 Value's\r | |
| 55 | .0:\r | |
| 56 | movq [edi], mm0\r | |
| 57 | add edi, 8\r | |
| 58 | loop .0\r | |
| 59 | movq mm0, [esp] ; restore mm0\r | |
| 60 | movq mm1, [esp + 8] ; restore mm1\r | |
| 61 | add esp, 0x10 ; stack cleanup\r | |
| 62 | @SetBytes:\r | |
| 63 | mov ecx, edx\r | |
| 64 | rep stosb\r | |
| 65 | mov eax, [esp + 8] ; eax <- Buffer as return value\r | |
| 66 | pop edi\r | |
| 67 | ret\r | |
| 68 | \r |