[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem32.s

#------------------------------------------------------------------------------
#
# Copyright (c) 2006, 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:
#
#   SetMem32.asm
#
# Abstract:
#
#   SetMem32 function
#
# Notes:
#
#------------------------------------------------------------------------------

    .686: 
    #.MODEL flat,C
    .xmm: 
    .code: 

#------------------------------------------------------------------------------
#  VOID *
#  _mem_SetMem32 (
#    IN VOID   *Buffer,
#    IN UINTN  Count,
#    IN UINT32 Value
#    )
#------------------------------------------------------------------------------
.global _InternalMemSetMem32
_InternalMemSetMem32:
    push    %edi
    movl    12(%esp), %edx
    movl    8(%esp), %edi
    xorl    %ecx, %ecx
    subl    %edi, %ecx
    andl    $15, %ecx                   # ecx + edi aligns on 16-byte boundary
    movl    16(%esp), %eax
    jz      L0
    shrl    $2, %ecx
    cmpl    %edx, %ecx
    cmova   %edx, %ecx
    subl    %ecx, %edx
    rep
    stosl
L0: 
    movl    %edx, %ecx
    andl    $3, %edx
    shrl    $2, %ecx
    jz      @SetDwords
    movd    %eax, %xmm0
    pshufd  $0, %xmm0, %xmm0
L1: 
    movntdq %xmm0, (%edi)
    addl    $16, %edi
    loop    L1
    mfence
@SetDwords: 
    movl    %edx, %ecx
    rep
    stosl
    movl    8(%esp), %eax
    pop     %edi
    ret
Commit	Line	Data
6e3b8c47	1	#------------------------------------------------------------------------------
	2	#
	3	# Copyright (c) 2006, Intel Corporation
	4	# All rights reserved. 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	# SetMem32.asm
	15	#
	16	# Abstract:
	17	#
	18	# SetMem32 function
	19	#
	20	# Notes:
	21	#
	22	#------------------------------------------------------------------------------
	23
	24	.686:
	25	#.MODEL flat,C
	26	.xmm:
	27	.code:
	28
	29	#------------------------------------------------------------------------------
	30	# VOID *
	31	# _mem_SetMem32 (
	32	# IN VOID *Buffer,
	33	# IN UINTN Count,
	34	# IN UINT32 Value
	35	# )
	36	#------------------------------------------------------------------------------
	37	.global _InternalMemSetMem32
	38	_InternalMemSetMem32:
	39	push %edi
	40	movl 12(%esp), %edx
	41	movl 8(%esp), %edi
	42	xorl %ecx, %ecx
	43	subl %edi, %ecx
	44	andl $15, %ecx # ecx + edi aligns on 16-byte boundary
	45	movl 16(%esp), %eax
	46	jz L0
	47	shrl $2, %ecx
	48	cmpl %edx, %ecx
	49	cmova %edx, %ecx
	50	subl %ecx, %edx
	51	rep
	52	stosl
	53	L0:
	54	movl %edx, %ecx
	55	andl $3, %edx
	56	shrl $2, %ecx
	57	jz @SetDwords
	58	movd %eax, %xmm0
	59	pshufd $0, %xmm0, %xmm0
	60	L1:
	61	movntdq %xmm0, (%edi)
	62	addl $16, %edi
	63	loop L1
	64	mfence
65	@SetDwords:
66	movl %edx, %ecx
67	rep
68	stosl
69	movl 8(%esp), %eax
70	pop %edi
71	ret