1 #------------------------------------------------------------------------------ 2 # 3 # Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> 4 # This program and the accompanying materials 5 # are licensed and made available under the terms and conditions of the BSD License 6 # which accompanies this distribution. The full text of the license may be found at 7 # http://opensource.org/licenses/bsd-license.php. 8 # 9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 # 12 # Module Name: 13 # 14 # ZeroMem.asm 15 # 16 # Abstract: 17 # 18 # ZeroMem function 19 # 20 # Notes: 21 # 22 #------------------------------------------------------------------------------ 23 24 ASM_GLOBAL ASM_PFX(InternalMemZeroMem) 25 26 #------------------------------------------------------------------------------ 27 # VOID * 28 # EFIAPI 29 # InternalMemZeroMem ( 30 # IN VOID *Buffer, 31 # IN UINTN Count 32 # ); 33 #------------------------------------------------------------------------------ 34 ASM_PFX(InternalMemZeroMem): 35 push %edi 36 movl 8(%esp), %edi 37 movl 12(%esp), %ecx 38 movl %ecx, %edx 39 shrl $3, %ecx 40 jz L_ZeroBytes 41 pxor %mm0, %mm0 42 L0: 43 movq %mm0, (%edi) 44 addl $8, %edi 45 loop L0 46 L_ZeroBytes: 47 andl $7, %edx 48 xorl %eax, %eax 49 movl %edx, %ecx 50 rep 51 stosb 52 movl 8(%esp), %eax 53 pop %edi 54 ret 55
