| # | |
| # ConvertAsm.py: Automatically generated from SetMem.asm | |
| # | |
| #------------------------------------------------------------------------------ | |
| # | |
| # Copyright (c) 2006 - 2008, Intel Corporation | |
| # All rights reserved. This program and the accompanying materials | |
| # are licensed and made available under the terms and conditions of the BSD License | |
| # which accompanies this distribution. The full text of the license may be found at | |
| # http://opensource.org/licenses/bsd-license.php | |
| # | |
| # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| # | |
| # Module Name: | |
| # | |
| # SetMem.S | |
| # | |
| # Abstract: | |
| # | |
| # SetMem function | |
| # | |
| # Notes: | |
| # | |
| #------------------------------------------------------------------------------ | |
| #------------------------------------------------------------------------------ | |
| # VOID * | |
| # EFIAPI | |
| # InternalMemSetMem ( | |
| # IN VOID *Buffer, | |
| # IN UINTN Count, | |
| # IN UINT8 Value | |
| # ) | |
| #------------------------------------------------------------------------------ | |
| .intel_syntax noprefix | |
| ASM_GLOBAL ASM_PFX(InternalMemSetMem) | |
| ASM_PFX(InternalMemSetMem): | |
| push rdi | |
| mov rdi, rcx # rdi <- Buffer | |
| mov al, r8b # al <- Value | |
| mov r9, rdi # r9 <- Buffer as return value | |
| xor rcx, rcx | |
| sub rcx, rdi | |
| and rcx, 15 # rcx + rdi aligns on 16-byte boundary | |
| jz L0 | |
| cmp rcx, rdx | |
| cmova rcx, rdx | |
| sub rdx, rcx | |
| rep stosb | |
| L0: | |
| mov rcx, rdx | |
| and rdx, 15 | |
| shr rcx, 4 | |
| jz L_SetBytes | |
| mov ah, al # ax <- Value repeats twice | |
| movdqa [rsp + 0x10], xmm0 # save xmm0 | |
| movd xmm0, eax # xmm0[0..16] <- Value repeats twice | |
| pshuflw xmm0, xmm0, 0 # xmm0[0..63] <- Value repeats 8 times | |
| movlhps xmm0, xmm0 # xmm0 <- Value repeats 16 times | |
| L1: | |
| movntdq [rdi], xmm0 # rdi should be 16-byte aligned | |
| add rdi, 16 | |
| loop L1 | |
| mfence | |
| movdqa xmm0, [rsp + 0x10] # restore xmm0 | |
| L_SetBytes: | |
| mov ecx, edx # high 32 bits of rcx are always zero | |
| rep stosb | |
| mov rax, r9 # rax <- Return value | |
| pop rdi | |
| ret |