Text file src/crypto/md5/md5block_arm64.s
1 // Copyright 2018 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 // ARM64 version of md5block.go
6 // derived from crypto/md5/md5block_amd64.s
7
8 #include "textflag.h"
9
10 TEXT ·block(SB),NOSPLIT,$0-32
11 MOVD dig+0(FP), R0
12 MOVD p+8(FP), R1
13 MOVD p_len+16(FP), R2
14 AND $~63, R2
15 CBZ R2, zero
16
17 ADD R1, R2, R21
18 LDPW (0*8)(R0), (R4, R5)
19 LDPW (1*8)(R0), (R6, R7)
20
21 loop:
22 MOVW R4, R12
23 MOVW R5, R13
24 MOVW R6, R14
25 MOVW R7, R15
26
27 MOVW (0*4)(R1), R8
28 MOVW R7, R9
29
30 #define ROUND1(a, b, c, d, index, const, shift) \
31 ADDW $const, a; \
32 ADDW R8, a; \
33 MOVW (index*4)(R1), R8; \
34 EORW c, R9; \
35 ANDW b, R9; \
36 EORW d, R9; \
37 ADDW R9, a; \
38 RORW $(32-shift), a; \
39 MOVW c, R9; \
40 ADDW b, a
41
42 ROUND1(R4,R5,R6,R7, 1,0xd76aa478, 7);
43 ROUND1(R7,R4,R5,R6, 2,0xe8c7b756,12);
44 ROUND1(R6,R7,R4,R5, 3,0x242070db,17);
45 ROUND1(R5,R6,R7,R4, 4,0xc1bdceee,22);
46 ROUND1(R4,R5,R6,R7, 5,0xf57c0faf, 7);
47 ROUND1(R7,R4,R5,R6, 6,0x4787c62a,12);
48 ROUND1(R6,R7,R4,R5, 7,0xa8304613,17);
49 ROUND1(R5,R6,R7,R4, 8,0xfd469501,22);
50 ROUND1(R4,R5,R6,R7, 9,0x698098d8, 7);
51 ROUND1(R7,R4,R5,R6,10,0x8b44f7af,12);
52 ROUND1(R6,R7,R4,R5,11,0xffff5bb1,17);
53 ROUND1(R5,R6,R7,R4,12,0x895cd7be,22);
54 ROUND1(R4,R5,R6,R7,13,0x6b901122, 7);
55 ROUND1(R7,R4,R5,R6,14,0xfd987193,12);
56 ROUND1(R6,R7,R4,R5,15,0xa679438e,17);
57 ROUND1(R5,R6,R7,R4, 0,0x49b40821,22);
58
59 MOVW (1*4)(R1), R8
60 MOVW R7, R9
61 MOVW R7, R10
62
63 #define ROUND2(a, b, c, d, index, const, shift) \
64 ADDW $const, a; \
65 ADDW R8, a; \
66 MOVW (index*4)(R1), R8; \
67 ANDW b, R10; \
68 BICW R9, c, R9; \
69 ORRW R9, R10; \
70 MOVW c, R9; \
71 ADDW R10, a; \
72 MOVW c, R10; \
73 RORW $(32-shift), a; \
74 ADDW b, a
75
76 ROUND2(R4,R5,R6,R7, 6,0xf61e2562, 5);
77 ROUND2(R7,R4,R5,R6,11,0xc040b340, 9);
78 ROUND2(R6,R7,R4,R5, 0,0x265e5a51,14);
79 ROUND2(R5,R6,R7,R4, 5,0xe9b6c7aa,20);
80 ROUND2(R4,R5,R6,R7,10,0xd62f105d, 5);
81 ROUND2(R7,R4,R5,R6,15, 0x2441453, 9);
82 ROUND2(R6,R7,R4,R5, 4,0xd8a1e681,14);
83 ROUND2(R5,R6,R7,R4, 9,0xe7d3fbc8,20);
84 ROUND2(R4,R5,R6,R7,14,0x21e1cde6, 5);
85 ROUND2(R7,R4,R5,R6, 3,0xc33707d6, 9);
86 ROUND2(R6,R7,R4,R5, 8,0xf4d50d87,14);
87 ROUND2(R5,R6,R7,R4,13,0x455a14ed,20);
88 ROUND2(R4,R5,R6,R7, 2,0xa9e3e905, 5);
89 ROUND2(R7,R4,R5,R6, 7,0xfcefa3f8, 9);
90 ROUND2(R6,R7,R4,R5,12,0x676f02d9,14);
91 ROUND2(R5,R6,R7,R4, 0,0x8d2a4c8a,20);
92
93 MOVW (5*4)(R1), R8
94 MOVW R6, R9
95
96 #define ROUND3(a, b, c, d, index, const, shift) \
97 ADDW $const, a; \
98 ADDW R8, a; \
99 MOVW (index*4)(R1), R8; \
100 EORW d, R9; \
101 EORW b, R9; \
102 ADDW R9, a; \
103 RORW $(32-shift), a; \
104 MOVW b, R9; \
105 ADDW b, a
106
107 ROUND3(R4,R5,R6,R7, 8,0xfffa3942, 4);
108 ROUND3(R7,R4,R5,R6,11,0x8771f681,11);
109 ROUND3(R6,R7,R4,R5,14,0x6d9d6122,16);
110 ROUND3(R5,R6,R7,R4, 1,0xfde5380c,23);
111 ROUND3(R4,R5,R6,R7, 4,0xa4beea44, 4);
112 ROUND3(R7,R4,R5,R6, 7,0x4bdecfa9,11);
113 ROUND3(R6,R7,R4,R5,10,0xf6bb4b60,16);
114 ROUND3(R5,R6,R7,R4,13,0xbebfbc70,23);
115 ROUND3(R4,R5,R6,R7, 0,0x289b7ec6, 4);
116 ROUND3(R7,R4,R5,R6, 3,0xeaa127fa,11);
117 ROUND3(R6,R7,R4,R5, 6,0xd4ef3085,16);
118 ROUND3(R5,R6,R7,R4, 9, 0x4881d05,23);
119 ROUND3(R4,R5,R6,R7,12,0xd9d4d039, 4);
120 ROUND3(R7,R4,R5,R6,15,0xe6db99e5,11);
121 ROUND3(R6,R7,R4,R5, 2,0x1fa27cf8,16);
122 ROUND3(R5,R6,R7,R4, 0,0xc4ac5665,23);
123
124 MOVW (0*4)(R1), R8
125 MVNW R7, R9
126
127 #define ROUND4(a, b, c, d, index, const, shift) \
128 ADDW $const, a; \
129 ADDW R8, a; \
130 MOVW (index*4)(R1), R8; \
131 ORRW b, R9; \
132 EORW c, R9; \
133 ADDW R9, a; \
134 RORW $(32-shift), a; \
135 MVNW c, R9; \
136 ADDW b, a
137
138 ROUND4(R4,R5,R6,R7, 7,0xf4292244, 6);
139 ROUND4(R7,R4,R5,R6,14,0x432aff97,10);
140 ROUND4(R6,R7,R4,R5, 5,0xab9423a7,15);
141 ROUND4(R5,R6,R7,R4,12,0xfc93a039,21);
142 ROUND4(R4,R5,R6,R7, 3,0x655b59c3, 6);
143 ROUND4(R7,R4,R5,R6,10,0x8f0ccc92,10);
144 ROUND4(R6,R7,R4,R5, 1,0xffeff47d,15);
145 ROUND4(R5,R6,R7,R4, 8,0x85845dd1,21);
146 ROUND4(R4,R5,R6,R7,15,0x6fa87e4f, 6);
147 ROUND4(R7,R4,R5,R6, 6,0xfe2ce6e0,10);
148 ROUND4(R6,R7,R4,R5,13,0xa3014314,15);
149 ROUND4(R5,R6,R7,R4, 4,0x4e0811a1,21);
150 ROUND4(R4,R5,R6,R7,11,0xf7537e82, 6);
151 ROUND4(R7,R4,R5,R6, 2,0xbd3af235,10);
152 ROUND4(R6,R7,R4,R5, 9,0x2ad7d2bb,15);
153 ROUND4(R5,R6,R7,R4, 0,0xeb86d391,21);
154
155 ADDW R12, R4
156 ADDW R13, R5
157 ADDW R14, R6
158 ADDW R15, R7
159
160 ADD $64, R1
161 CMP R1, R21
162 BNE loop
163
164 STPW (R4, R5), (0*8)(R0)
165 STPW (R6, R7), (1*8)(R0)
166 zero:
167 RET
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