1 # 2 # ConvertAsm.py: Automatically generated from ZeroMem.asm 3 # 4 #------------------------------------------------------------------------------ 5 # 6 # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> 7 # This program and the accompanying materials 8 # are licensed and made available under the terms and conditions of the BSD License 9 # which accompanies this distribution. The full text of the license may be found at 10 # http://opensource.org/licenses/bsd-license.php. 11 # 12 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 # 15 # Module Name: 16 # 17 # ZeroMem.S 18 # 19 # Abstract: 20 # 21 # ZeroMem function 22 # 23 # Notes: 24 # 25 #------------------------------------------------------------------------------ 26 27 28 #------------------------------------------------------------------------------ 29 # VOID * 30 # InternalMemZeroMem ( 31 # IN VOID *Buffer, 32 # IN UINTN Count 33 # ); 34 #------------------------------------------------------------------------------ 35 ASM_GLOBAL ASM_PFX(InternalMemZeroMem) 36 ASM_PFX(InternalMemZeroMem): 37 pushq %rdi 38 movq %rcx, %rdi 39 xorq %rcx, %rcx 40 xorl %eax, %eax 41 subq %rdi, %rcx 42 andq $15, %rcx 43 movq %rdi, %r8 44 jz L0 45 cmpq %rdx, %rcx 46 cmova %rdx, %rcx 47 subq %rcx, %rdx 48 rep stosb 49 L0: 50 movq %rdx, %rcx 51 andl $15, %edx 52 shrq $4, %rcx 53 jz L_ZeroBytes 54 pxor %xmm0, %xmm0 55 L1: 56 movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned 57 addq $16, %rdi 58 loop L1 59 mfence 60 L_ZeroBytes: 61 movl %edx, %ecx 62 rep stosb 63 movq %r8, %rax 64 popq %rdi 65 ret 66
