isa-l/crc/aarch64/crc32_iscsi_3crc_fold.S

########################################################################
#  Copyright(c) 2020 Arm Corporation All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions
#  are met:
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
#    * Redistributions in binary form must reproduce the above copyright
#      notice, this list of conditions and the following disclaimer in
#      the documentation and/or other materials provided with the
#      distribution.
#    * Neither the name of Arm Corporation nor the names of its
#      contributors may be used to endorse or promote products derived
#      from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#########################################################################


	.text
	.align		6
	.arch		armv8-a+crc+crypto
#include "crc32_aarch64_common.h"
.macro	crc32_u64	dst,src,data
	crc32cx		\dst,\src,\data
.endm
.macro	crc32_u32	dst,src,data
	crc32cw		\dst,\src,\data
.endm
.macro	crc32_u16	dst,src,data
	crc32ch		\dst,\src,\data
.endm
.macro	crc32_u8	dst,src,data
	crc32cb		\dst,\src,\data
.endm
.macro	declare_var_vector_reg name:req,reg:req
	q\name	.req	q\reg
	v\name	.req	v\reg
	s\name	.req	s\reg
	d\name	.req	d\reg
.endm

	BUF		.req	x0
	LEN		.req	x1
	wCRC		.req	w2
	crc0		.req	w2
	crc1		.req	w3
	crc2		.req	w4
	xcrc0		.req	x2
	xcrc1		.req	x3
	const_adr	.req	x3
	ptr_crc0	.req	x0
	ptr_crc1	.req	x6
	ptr_crc2	.req	x7
	crc0_data0	.req	x9
	crc0_data1	.req	x10
	crc1_data0	.req	x11
	crc1_data1	.req	x12
	crc2_data0	.req	x13
	crc2_data1	.req	x14

	wdata		.req	w3
	data0		.req	x3
	data1		.req	x4
	data2		.req	x5
	data3		.req	x6

	declare_var_vector_reg	tmp0,0
	declare_var_vector_reg	tmp1,1
	declare_var_vector_reg	const0,2
	declare_var_vector_reg	const1,3

/**
	unsigned int crc32_iscsi(
		unsigned char *BUF,
		int LEN,
		unsigned int wCRC
	);

*/

	.global	cdecl(crc32_iscsi_3crc_fold)
#ifndef __APPLE__
	.type	crc32_iscsi_3crc_fold, %function
#endif
cdecl(crc32_iscsi_3crc_fold):
	crc32_3crc_fold		crc32c
#ifndef __APPLE__
	.size	crc32_iscsi_3crc_fold, .-crc32_iscsi_3crc_fold
#endif