[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem16.S

//\r
// Include common header file for this module.\r
//\r
#include "CommonHeader.h"\r
\r
#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   SetMem16.asm\r
#\r
# Abstract:\r
#\r
#   SetMem16 function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
.globl _InternalMemSetMem16\r
\r
#------------------------------------------------------------------------------\r
#  VOID *\r
#  EFIAPI\r
#  InternalMemSetMem16 (\r
#    IN VOID   *Buffer,\r
#    IN UINTN  Count,\r
#    IN UINT16 Value\r
#    )\r
#------------------------------------------------------------------------------\r
_InternalMemSetMem16:\r
    push    %edi\r
    movl    12(%esp), %edx\r
    movl    8(%esp), %edi\r
    xorl    %ecx, %ecx\r
    subl    %edi, %ecx\r
    andl    $15, %ecx                   # ecx + edi aligns on 16-byte boundary\r
    movl    16(%esp), %eax\r
    jz      L0\r
    shrl    %ecx\r
    cmpl    %edx, %ecx\r
    cmova   %edx, %ecx\r
    subl    %ecx, %edx\r
    rep\r
    stosw\r
L0:\r
    movl    %edx, %ecx\r
    andl    $7, %edx\r
    shrl    $3, %ecx\r
    jz      L_SetWords\r
    movd    %eax, %xmm0\r
    pshuflw $0, %xmm0, %xmm0\r
    movlhps %xmm0, %xmm0\r
L1:\r
    movntdq %xmm0, (%edi)\r
    addl    $16, %edi\r
    loop    L1\r
    mfence\r
L_SetWords:\r
    movl    %edx, %ecx\r
    rep\r
    stosw\r
    movl    8(%esp), %eax\r
    pop     %edi\r
    ret\r
Commit	Line	Data
e1f414b6	1	//\r
	2	// Include common header file for this module.\r
	3	//\r
	4	#include "CommonHeader.h"\r
	5	\r
	6	#------------------------------------------------------------------------------\r
	7	#\r
	8	# Copyright (c) 2006, Intel Corporation\r
	9	# All rights reserved. This program and the accompanying materials\r
	10	# are licensed and made available under the terms and conditions of the BSD License\r
	11	# which accompanies this distribution. The full text of the license may be found at\r
	12	# http://opensource.org/licenses/bsd-license.php\r
	13	#\r
	14	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	15	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	16	#\r
	17	# Module Name:\r
	18	#\r
	19	# SetMem16.asm\r
	20	#\r
	21	# Abstract:\r
	22	#\r
	23	# SetMem16 function\r
	24	#\r
	25	# Notes:\r
	26	#\r
	27	#------------------------------------------------------------------------------\r
	28	\r
	29	.globl _InternalMemSetMem16\r
	30	\r
	31	#------------------------------------------------------------------------------\r
	32	# VOID *\r
	33	# EFIAPI\r
	34	# InternalMemSetMem16 (\r
	35	# IN VOID *Buffer,\r
	36	# IN UINTN Count,\r
	37	# IN UINT16 Value\r
	38	# )\r
	39	#------------------------------------------------------------------------------\r
	40	_InternalMemSetMem16:\r
	41	push %edi\r
	42	movl 12(%esp), %edx\r
	43	movl 8(%esp), %edi\r
	44	xorl %ecx, %ecx\r
	45	subl %edi, %ecx\r
	46	andl $15, %ecx # ecx + edi aligns on 16-byte boundary\r
	47	movl 16(%esp), %eax\r
	48	jz L0\r
	49	shrl %ecx\r
	50	cmpl %edx, %ecx\r
	51	cmova %edx, %ecx\r
	52	subl %ecx, %edx\r
	53	rep\r
	54	stosw\r
	55	L0:\r
	56	movl %edx, %ecx\r
	57	andl $7, %edx\r
	58	shrl $3, %ecx\r
	59	jz L_SetWords\r
	60	movd %eax, %xmm0\r
	61	pshuflw $0, %xmm0, %xmm0\r
	62	movlhps %xmm0, %xmm0\r
	63	L1:\r
	64	movntdq %xmm0, (%edi)\r
65	addl $16, %edi\r
66	loop L1\r
67	mfence\r
68	L_SetWords:\r
69	movl %edx, %ecx\r
70	rep\r
71	stosw\r
72	movl 8(%esp), %eax\r
73	pop %edi\r
74	ret\r