xref: /freebsd/lib/libc/powerpc64/string/bcopy_vsx.S (revision c697fb7f)
1/*-
2 * Copyright (c) 2018 Instituto de Pesquisas Eldorado
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of its contributors may
14 *    be used to endorse or promote products derived from this software
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef FN_NAME
32#define FN_NAME		__bcopy_vsx
33#endif
34
35/*
36 * r3: dst
37 * r4: src
38 * r5: block increment
39 * r6: blocks to copy
40 * r7/r8/r9/r10: 16-byte offsets to copy
41 */
42
43#define FN_PHASE2 \
44	mtctr	%r6			;\
45	.align 5			;\
46.Lphase2_loop:				;\
47	lxvd2x  %vs6, %r7,  %r4		;\
48	lxvd2x  %vs7, %r8,  %r4		;\
49	lxvd2x  %vs8, %r9,  %r4		;\
50	lxvd2x  %vs9, %r10, %r4		;\
51	stxvd2x %vs6, %r7,  %r3		;\
52	stxvd2x %vs7, %r8,  %r3		;\
53	stxvd2x %vs8, %r9,  %r3		;\
54	stxvd2x %vs9, %r10, %r3		;\
55	/* phase 2 increment */		;\
56	add	%r4, %r4, %r5		;\
57	add	%r3, %r3, %r5		;\
58					 \
59	bdnz	.Lphase2_loop		;\
60
61#include "bcopy.S"
62