[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem16.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:
#
#   SetMem16.asm
#
# Abstract:
#
#   SetMem16 function
#
# Notes:
#
#------------------------------------------------------------------------------

.globl _InternalMemSetMem16

#------------------------------------------------------------------------------
#  VOID *
#  EFIAPI
#  InternalMemSetMem16 (
#    IN VOID   *Buffer,
#    IN UINTN  Count,
#    IN UINT16 Value
#    )
#------------------------------------------------------------------------------
_InternalMemSetMem16:
    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    %ecx
    cmpl    %edx, %ecx
    cmova   %edx, %ecx
    subl    %ecx, %edx
    rep
    stosw
L0:
    movl    %edx, %ecx
    andl    $7, %edx
    shrl    $3, %ecx
    jz      L_SetWords
    movd    %eax, %xmm0
    pshuflw $0, %xmm0, %xmm0
    movlhps %xmm0, %xmm0
L1:
    movntdq %xmm0, (%edi)
    addl    $16, %edi
    loop    L1
    mfence
L_SetWords:
    movl    %edx, %ecx
    rep
    stosw
    movl    8(%esp), %eax
    pop     %edi
    ret
Commit	Line	Data
f1baef62	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	# SetMem16.asm
	15	#
	16	# Abstract:
	17	#
	18	# SetMem16 function
	19	#
	20	# Notes:
	21	#
	22	#------------------------------------------------------------------------------
	23
	24	.globl _InternalMemSetMem16
	25
	26	#------------------------------------------------------------------------------
	27	# VOID *
	28	# EFIAPI
	29	# InternalMemSetMem16 (
	30	# IN VOID *Buffer,
	31	# IN UINTN Count,
	32	# IN UINT16 Value
	33	# )
	34	#------------------------------------------------------------------------------
	35	_InternalMemSetMem16:
	36	push %edi
	37	movl 12(%esp), %edx
	38	movl 8(%esp), %edi
	39	xorl %ecx, %ecx
	40	subl %edi, %ecx
	41	andl $15, %ecx # ecx + edi aligns on 16-byte boundary
	42	movl 16(%esp), %eax
	43	jz L0
	44	shrl %ecx
	45	cmpl %edx, %ecx
	46	cmova %edx, %ecx
	47	subl %ecx, %edx
	48	rep
	49	stosw
	50	L0:
	51	movl %edx, %ecx
	52	andl $7, %edx
	53	shrl $3, %ecx
	54	jz L_SetWords
	55	movd %eax, %xmm0
	56	pshuflw $0, %xmm0, %xmm0
	57	movlhps %xmm0, %xmm0
	58	L1:
	59	movntdq %xmm0, (%edi)
	60	addl $16, %edi
	61	loop L1
	62	mfence
	63	L_SetWords:
	64	movl %edx, %ecx
65	rep
66	stosw
67	movl 8(%esp), %eax
68	pop %edi
69	ret