Text file src/pkg/crypto/sha1/sha1block_arm64.s
1 // Copyright 2017 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 #include "textflag.h"
6
7 #define HASHUPDATECHOOSE \
8 SHA1C V16.S4, V1, V2 \
9 SHA1H V3, V1 \
10 VMOV V2.B16, V3.B16
11
12 #define HASHUPDATEPARITY \
13 SHA1P V16.S4, V1, V2 \
14 SHA1H V3, V1 \
15 VMOV V2.B16, V3.B16
16
17 #define HASHUPDATEMAJ \
18 SHA1M V16.S4, V1, V2 \
19 SHA1H V3, V1 \
20 VMOV V2.B16, V3.B16
21
22 // func sha1block(h []uint32, p []byte, k []uint32)
23 TEXT ·sha1block(SB),NOSPLIT,$0
24 MOVD h_base+0(FP), R0 // hash value first address
25 MOVD p_base+24(FP), R1 // message first address
26 MOVD k_base+48(FP), R2 // k constants first address
27 MOVD p_len+32(FP), R3 // message length
28 VLD1.P 16(R0), [V0.S4]
29 FMOVS (R0), F20
30 SUB $16, R0, R0
31
32 blockloop:
33
34 VLD1.P 16(R1), [V4.B16] // load message
35 VLD1.P 16(R1), [V5.B16]
36 VLD1.P 16(R1), [V6.B16]
37 VLD1.P 16(R1), [V7.B16]
38 VLD1 (R2), [V19.S4] // load constant k0-k79
39 VMOV V0.B16, V2.B16
40 VMOV V20.S[0], V1
41 VMOV V2.B16, V3.B16
42 VDUP V19.S[0], V17.S4
43 VREV32 V4.B16, V4.B16 // prepare for using message in Byte format
44 VREV32 V5.B16, V5.B16
45 VREV32 V6.B16, V6.B16
46 VREV32 V7.B16, V7.B16
47
48
49 VDUP V19.S[1], V18.S4
50 VADD V17.S4, V4.S4, V16.S4
51 SHA1SU0 V6.S4, V5.S4, V4.S4
52 HASHUPDATECHOOSE
53 SHA1SU1 V7.S4, V4.S4
54
55 VADD V17.S4, V5.S4, V16.S4
56 SHA1SU0 V7.S4, V6.S4, V5.S4
57 HASHUPDATECHOOSE
58 SHA1SU1 V4.S4, V5.S4
59 VADD V17.S4, V6.S4, V16.S4
60 SHA1SU0 V4.S4, V7.S4, V6.S4
61 HASHUPDATECHOOSE
62 SHA1SU1 V5.S4, V6.S4
63
64 VADD V17.S4, V7.S4, V16.S4
65 SHA1SU0 V5.S4, V4.S4, V7.S4
66 HASHUPDATECHOOSE
67 SHA1SU1 V6.S4, V7.S4
68
69 VADD V17.S4, V4.S4, V16.S4
70 SHA1SU0 V6.S4, V5.S4, V4.S4
71 HASHUPDATECHOOSE
72 SHA1SU1 V7.S4, V4.S4
73
74 VDUP V19.S[2], V17.S4
75 VADD V18.S4, V5.S4, V16.S4
76 SHA1SU0 V7.S4, V6.S4, V5.S4
77 HASHUPDATEPARITY
78 SHA1SU1 V4.S4, V5.S4
79
80 VADD V18.S4, V6.S4, V16.S4
81 SHA1SU0 V4.S4, V7.S4, V6.S4
82 HASHUPDATEPARITY
83 SHA1SU1 V5.S4, V6.S4
84
85 VADD V18.S4, V7.S4, V16.S4
86 SHA1SU0 V5.S4, V4.S4, V7.S4
87 HASHUPDATEPARITY
88 SHA1SU1 V6.S4, V7.S4
89
90 VADD V18.S4, V4.S4, V16.S4
91 SHA1SU0 V6.S4, V5.S4, V4.S4
92 HASHUPDATEPARITY
93 SHA1SU1 V7.S4, V4.S4
94
95 VADD V18.S4, V5.S4, V16.S4
96 SHA1SU0 V7.S4, V6.S4, V5.S4
97 HASHUPDATEPARITY
98 SHA1SU1 V4.S4, V5.S4
99
100 VDUP V19.S[3], V18.S4
101 VADD V17.S4, V6.S4, V16.S4
102 SHA1SU0 V4.S4, V7.S4, V6.S4
103 HASHUPDATEMAJ
104 SHA1SU1 V5.S4, V6.S4
105
106 VADD V17.S4, V7.S4, V16.S4
107 SHA1SU0 V5.S4, V4.S4, V7.S4
108 HASHUPDATEMAJ
109 SHA1SU1 V6.S4, V7.S4
110
111 VADD V17.S4, V4.S4, V16.S4
112 SHA1SU0 V6.S4, V5.S4, V4.S4
113 HASHUPDATEMAJ
114 SHA1SU1 V7.S4, V4.S4
115
116 VADD V17.S4, V5.S4, V16.S4
117 SHA1SU0 V7.S4, V6.S4, V5.S4
118 HASHUPDATEMAJ
119 SHA1SU1 V4.S4, V5.S4
120
121 VADD V17.S4, V6.S4, V16.S4
122 SHA1SU0 V4.S4, V7.S4, V6.S4
123 HASHUPDATEMAJ
124 SHA1SU1 V5.S4, V6.S4
125
126 VADD V18.S4, V7.S4, V16.S4
127 SHA1SU0 V5.S4, V4.S4, V7.S4
128 HASHUPDATEPARITY
129 SHA1SU1 V6.S4, V7.S4
130
131 VADD V18.S4, V4.S4, V16.S4
132 HASHUPDATEPARITY
133
134 VADD V18.S4, V5.S4, V16.S4
135 HASHUPDATEPARITY
136
137 VADD V18.S4, V6.S4, V16.S4
138 HASHUPDATEPARITY
139
140 VADD V18.S4, V7.S4, V16.S4
141 HASHUPDATEPARITY
142
143 SUB $64, R3, R3 // message length - 64bytes, then compare with 64bytes
144 VADD V2.S4, V0.S4, V0.S4
145 VADD V1.S4, V20.S4, V20.S4
146 CBNZ R3, blockloop
147
148 sha1ret:
149
150 VST1.P [V0.S4], 16(R0) // store hash value H(dcba)
151 FMOVS F20, (R0) // store hash value H(e)
152 RET
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