summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/lib/xor_vmx.c
blob: aab49d056d1883a42c8fffd7a3d5c3549c8d73f9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 * Copyright (C) IBM Corporation, 2012
 *
 * Author: Anton Blanchard <anton@au.ibm.com>
 */

/*
 * Sparse (as at v0.5.0) gets very, very confused by this file.
 * Make it a bit simpler for it.
 */
#if !defined(__CHECKER__)
#include <altivec.h>
#else
#define vec_xor(a, b) a ^ b
#define vector __attribute__((vector_size(16)))
#endif

#include "xor_vmx.h"

typedef vector signed char unative_t;

#define DEFINE(V)				\
	unative_t *V = (unative_t *)V##_in;	\
	unative_t V##_0, V##_1, V##_2, V##_3

#define LOAD(V)			\
	do {			\
		V##_0 = V[0];	\
		V##_1 = V[1];	\
		V##_2 = V[2];	\
		V##_3 = V[3];	\
	} while (0)

#define STORE(V)		\
	do {			\
		V[0] = V##_0;	\
		V[1] = V##_1;	\
		V[2] = V##_2;	\
		V[3] = V##_3;	\
	} while (0)

#define XOR(V1, V2)					\
	do {						\
		V1##_0 = vec_xor(V1##_0, V2##_0);	\
		V1##_1 = vec_xor(V1##_1, V2##_1);	\
		V1##_2 = vec_xor(V1##_2, V2##_2);	\
		V1##_3 = vec_xor(V1##_3, V2##_3);	\
	} while (0)

void __xor_altivec_2(unsigned long bytes,
		     unsigned long * __restrict v1_in,
		     const unsigned long * __restrict v2_in)
{
	DEFINE(v1);
	DEFINE(v2);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		XOR(v1, v2);
		STORE(v1);

		v1 += 4;
		v2 += 4;
	} while (--lines > 0);
}

void __xor_altivec_3(unsigned long bytes,
		     unsigned long * __restrict v1_in,
		     const unsigned long * __restrict v2_in,
		     const unsigned long * __restrict v3_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		XOR(v1, v2);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
	} while (--lines > 0);
}

void __xor_altivec_4(unsigned long bytes,
		     unsigned long * __restrict v1_in,
		     const unsigned long * __restrict v2_in,
		     const unsigned long * __restrict v3_in,
		     const unsigned long * __restrict v4_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	DEFINE(v4);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		LOAD(v4);
		XOR(v1, v2);
		XOR(v3, v4);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
		v4 += 4;
	} while (--lines > 0);
}

void __xor_altivec_5(unsigned long bytes,
		     unsigned long * __restrict v1_in,
		     const unsigned long * __restrict v2_in,
		     const unsigned long * __restrict v3_in,
		     const unsigned long * __restrict v4_in,
		     const unsigned long * __restrict v5_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	DEFINE(v4);
	DEFINE(v5);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		LOAD(v4);
		LOAD(v5);
		XOR(v1, v2);
		XOR(v3, v4);
		XOR(v1, v5);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
		v4 += 4;
		v5 += 4;
	} while (--lines > 0);
}