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 # SetMem.asm 15 # 16 # Abstract: 17 # 18 # SetMem function 19 # 20 # Notes: 21 # 22 #------------------------------------------------------------------------------ 23 24 ASM_GLOBAL ASM_PFX(InternalMemSetMem) 25 26 #------------------------------------------------------------------------------ 27 # VOID * 28 # InternalMemSetMem ( 29 # IN VOID *Buffer, 30 # IN UINTN Count, 31 # IN UINT8 Value 32 # ) 33 #------------------------------------------------------------------------------ 34 ASM_PFX(InternalMemSetMem): 35 push %edi 36 movb 16(%esp), %al 37 movb %al, %ah 38 shrdl $16, %eax, %edx 39 shldl $16, %edx, %eax 40 movl 12(%esp), %ecx # ecx <- Count 41 movl 8(%esp), %edi # edi <- Buffer 42 movl %ecx, %edx 43 andl $7, %edx 44 shrl $3, %ecx # # of Qwords to set 45 jz L1 46 addl $-16, %esp 47 movq %mm0, (%esp) # save mm0 48 movq %mm1, 8(%esp) # save mm1 49 movd %eax, %mm0 50 movd %eax, %mm1 51 psllq $32, %mm0 52 por %mm1, %mm0 # fill mm0 with 8 Value's 53 L0: 54 movq %mm0, (%edi) 55 addl $8, %edi 56 loop L0 57 movq (%esp), %mm0 # restore mm0 58 movq 8(%esp), %mm1 # restore mm1 59 addl $0x10, %esp # stack cleanup 60 L1: 61 movl %edx, %ecx 62 rep 63 stosb 64 movl 8(%esp), %eax # eax <- Buffer as return value 65 pop %edi 66 ret 67
