1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Copyright (C) IBM Corporation, 2012
5 *
6 * Author: Anton Blanchard <anton@au.ibm.com>
7 */
8
9 /*
10 * Sparse (as at v0.5.0) gets very, very confused by this file.
11 * Make it a bit simpler for it.
12 */
13 #if !defined(__CHECKER__)
14 #include <altivec.h>
15 #else
16 #define vec_xor(a, b) a ^ b
17 #define vector __attribute__((vector_size(16)))
18 #endif
19
20 #include "xor_vmx.h"
21
22 typedef vector signed char unative_t;
23
24 #define DEFINE(V) \
25 unative_t *V = (unative_t *)V##_in; \
26 unative_t V##_0, V##_1, V##_2, V##_3
27
28 #define LOAD(V) \
29 do { \
30 V##_0 = V[0]; \
31 V##_1 = V[1]; \
32 V##_2 = V[2]; \
33 V##_3 = V[3]; \
34 } while (0)
35
36 #define STORE(V) \
37 do { \
38 V[0] = V##_0; \
39 V[1] = V##_1; \
40 V[2] = V##_2; \
41 V[3] = V##_3; \
42 } while (0)
43
44 #define XOR(V1, V2) \
45 do { \
46 V1##_0 = vec_xor(V1##_0, V2##_0); \
47 V1##_1 = vec_xor(V1##_1, V2##_1); \
48 V1##_2 = vec_xor(V1##_2, V2##_2); \
49 V1##_3 = vec_xor(V1##_3, V2##_3); \
50 } while (0)
51
52 void __xor_altivec_2(unsigned long bytes,
53 unsigned long * __restrict v1_in,
54 const unsigned long * __restrict v2_in)
55 {
56 DEFINE(v1);
57 DEFINE(v2);
58 unsigned long lines = bytes / (sizeof(unative_t)) / 4;
59
60 do {
61 LOAD(v1);
62 LOAD(v2);
63 XOR(v1, v2);
64 STORE(v1);
65
66 v1 += 4;
67 v2 += 4;
68 } while (--lines > 0);
69 }
70
71 void __xor_altivec_3(unsigned long bytes,
72 unsigned long * __restrict v1_in,
73 const unsigned long * __restrict v2_in,
74 const unsigned long * __restrict v3_in)
75 {
76 DEFINE(v1);
77 DEFINE(v2);
78 DEFINE(v3);
79 unsigned long lines = bytes / (sizeof(unative_t)) / 4;
80
81 do {
82 LOAD(v1);
83 LOAD(v2);
84 LOAD(v3);
85 XOR(v1, v2);
86 XOR(v1, v3);
87 STORE(v1);
88
89 v1 += 4;
90 v2 += 4;
91 v3 += 4;
92 } while (--lines > 0);
93 }
94
95 void __xor_altivec_4(unsigned long bytes,
96 unsigned long * __restrict v1_in,
97 const unsigned long * __restrict v2_in,
98 const unsigned long * __restrict v3_in,
99 const unsigned long * __restrict v4_in)
100 {
101 DEFINE(v1);
102 DEFINE(v2);
103 DEFINE(v3);
104 DEFINE(v4);
105 unsigned long lines = bytes / (sizeof(unative_t)) / 4;
106
107 do {
108 LOAD(v1);
109 LOAD(v2);
110 LOAD(v3);
111 LOAD(v4);
112 XOR(v1, v2);
113 XOR(v3, v4);
114 XOR(v1, v3);
115 STORE(v1);
116
117 v1 += 4;
118 v2 += 4;
119 v3 += 4;
120 v4 += 4;
121 } while (--lines > 0);
122 }
123
124 void __xor_altivec_5(unsigned long bytes,
125 unsigned long * __restrict v1_in,
126 const unsigned long * __restrict v2_in,
127 const unsigned long * __restrict v3_in,
128 const unsigned long * __restrict v4_in,
129 const unsigned long * __restrict v5_in)
130 {
131 DEFINE(v1);
132 DEFINE(v2);
133 DEFINE(v3);
134 DEFINE(v4);
135 DEFINE(v5);
136 unsigned long lines = bytes / (sizeof(unative_t)) / 4;
137
138 do {
139 LOAD(v1);
140 LOAD(v2);
141 LOAD(v3);
142 LOAD(v4);
143 LOAD(v5);
144 XOR(v1, v2);
145 XOR(v3, v4);
146 XOR(v1, v5);
147 XOR(v1, v3);
148 STORE(v1);
149
150 v1 += 4;
151 v2 += 4;
152 v3 += 4;
153 v4 += 4;
154 v5 += 4;
155 } while (--lines > 0);
156 }
157
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