summaryrefslogtreecommitdiffstats
path: root/src/crypto/md5/md5block_ppc64x.s
blob: 69a20e7cad3399abf864bf13dcaf976897657ab0 (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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
// Original source:
//	http://www.zorinaq.com/papers/md5-amd64.html
//	http://www.zorinaq.com/papers/md5-amd64.tar.bz2
//
// MD5 optimized for ppc64le using Go's assembler for
// ppc64le, based on md5block_amd64.s implementation by
// the Go authors.
//
// Author: Marc Bevand <bevand_m (at) epita.fr>
// Licence: I hereby disclaim the copyright on this code and place it
// in the public domain.

//go:build ppc64 || ppc64le

#include "textflag.h"

// ENDIAN_MOVE generates the appropriate
// 4 byte load for big or little endian.
// The 4 bytes at ptr+off is loaded into dst.
// The idx reg is only needed for big endian
// and is clobbered when used.
#ifdef GOARCH_ppc64le
#define ENDIAN_MOVE(off, ptr, dst, idx) \
	MOVWZ	off(ptr),dst
#else
#define ENDIAN_MOVE(off, ptr, dst, idx) \
	MOVD	$off,idx; \
	MOVWBR	(idx)(ptr), dst
#endif

#define M00 R18
#define M01 R19
#define M02 R20
#define M03 R24
#define M04 R25
#define M05 R26
#define M06 R27
#define M07 R28
#define M08 R29
#define M09 R21
#define M10 R11
#define M11 R8
#define M12 R7
#define M13 R12
#define M14 R23
#define M15 R10

#define ROUND1(a, b, c, d, index, const, shift) \
	ADD	$const, index, R9; \
	ADD	R9, a; \
	AND     b, c, R9; \
	ANDN    b, d, R31; \
	OR	R9, R31, R9; \
	ADD	R9, a; \
	ROTLW	$shift, a; \
	ADD	b, a;

#define ROUND2(a, b, c, d, index, const, shift) \
	ADD	$const, index, R9; \
	ADD	R9, a; \
	AND	b, d, R31; \
	ANDN	d, c, R9; \
	OR	R9, R31; \
	ADD	R31, a; \
	ROTLW	$shift, a; \
	ADD	b, a;

#define ROUND3(a, b, c, d, index, const, shift) \
	ADD	$const, index, R9; \
	ADD	R9, a; \
	XOR	d, c, R31; \
	XOR	b, R31; \
	ADD	R31, a; \
	ROTLW	$shift, a; \
	ADD	b, a;

#define ROUND4(a, b, c, d, index, const, shift) \
	ADD	$const, index, R9; \
	ADD	R9, a; \
	ORN     d, b, R31; \
	XOR	c, R31; \
	ADD	R31, a; \
	ROTLW	$shift, a; \
	ADD	b, a;


TEXT ·block(SB),NOSPLIT,$0-32
	MOVD	dig+0(FP), R10
	MOVD	p+8(FP), R6
	MOVD	p_len+16(FP), R5

	// We assume p_len >= 64
	SRD 	$6, R5
	MOVD	R5, CTR

	MOVWZ	0(R10), R22
	MOVWZ	4(R10), R3
	MOVWZ	8(R10), R4
	MOVWZ	12(R10), R5

loop:
	MOVD	R22, R14
	MOVD	R3, R15
	MOVD	R4, R16
	MOVD	R5, R17

	ENDIAN_MOVE( 0,R6,M00,M15)
	ENDIAN_MOVE( 4,R6,M01,M15)
	ENDIAN_MOVE( 8,R6,M02,M15)
	ENDIAN_MOVE(12,R6,M03,M15)

	ROUND1(R22,R3,R4,R5,M00,0xd76aa478, 7);
	ROUND1(R5,R22,R3,R4,M01,0xe8c7b756,12);
	ROUND1(R4,R5,R22,R3,M02,0x242070db,17);
	ROUND1(R3,R4,R5,R22,M03,0xc1bdceee,22);

	ENDIAN_MOVE(16,R6,M04,M15)
	ENDIAN_MOVE(20,R6,M05,M15)
	ENDIAN_MOVE(24,R6,M06,M15)
	ENDIAN_MOVE(28,R6,M07,M15)

	ROUND1(R22,R3,R4,R5,M04,0xf57c0faf, 7);
	ROUND1(R5,R22,R3,R4,M05,0x4787c62a,12);
	ROUND1(R4,R5,R22,R3,M06,0xa8304613,17);
	ROUND1(R3,R4,R5,R22,M07,0xfd469501,22);

	ENDIAN_MOVE(32,R6,M08,M15)
	ENDIAN_MOVE(36,R6,M09,M15)
	ENDIAN_MOVE(40,R6,M10,M15)
	ENDIAN_MOVE(44,R6,M11,M15)

	ROUND1(R22,R3,R4,R5,M08,0x698098d8, 7);
	ROUND1(R5,R22,R3,R4,M09,0x8b44f7af,12);
	ROUND1(R4,R5,R22,R3,M10,0xffff5bb1,17);
	ROUND1(R3,R4,R5,R22,M11,0x895cd7be,22);

	ENDIAN_MOVE(48,R6,M12,M15)
	ENDIAN_MOVE(52,R6,M13,M15)
	ENDIAN_MOVE(56,R6,M14,M15)
	ENDIAN_MOVE(60,R6,M15,M15)

	ROUND1(R22,R3,R4,R5,M12,0x6b901122, 7);
	ROUND1(R5,R22,R3,R4,M13,0xfd987193,12);
	ROUND1(R4,R5,R22,R3,M14,0xa679438e,17);
	ROUND1(R3,R4,R5,R22,M15,0x49b40821,22);

	ROUND2(R22,R3,R4,R5,M01,0xf61e2562, 5);
	ROUND2(R5,R22,R3,R4,M06,0xc040b340, 9);
	ROUND2(R4,R5,R22,R3,M11,0x265e5a51,14);
	ROUND2(R3,R4,R5,R22,M00,0xe9b6c7aa,20);
	ROUND2(R22,R3,R4,R5,M05,0xd62f105d, 5);
	ROUND2(R5,R22,R3,R4,M10, 0x2441453, 9);
	ROUND2(R4,R5,R22,R3,M15,0xd8a1e681,14);
	ROUND2(R3,R4,R5,R22,M04,0xe7d3fbc8,20);
	ROUND2(R22,R3,R4,R5,M09,0x21e1cde6, 5);
	ROUND2(R5,R22,R3,R4,M14,0xc33707d6, 9);
	ROUND2(R4,R5,R22,R3,M03,0xf4d50d87,14);
	ROUND2(R3,R4,R5,R22,M08,0x455a14ed,20);
	ROUND2(R22,R3,R4,R5,M13,0xa9e3e905, 5);
	ROUND2(R5,R22,R3,R4,M02,0xfcefa3f8, 9);
	ROUND2(R4,R5,R22,R3,M07,0x676f02d9,14);
	ROUND2(R3,R4,R5,R22,M12,0x8d2a4c8a,20);

	ROUND3(R22,R3,R4,R5,M05,0xfffa3942, 4);
	ROUND3(R5,R22,R3,R4,M08,0x8771f681,11);
	ROUND3(R4,R5,R22,R3,M11,0x6d9d6122,16);
	ROUND3(R3,R4,R5,R22,M14,0xfde5380c,23);
	ROUND3(R22,R3,R4,R5,M01,0xa4beea44, 4);
	ROUND3(R5,R22,R3,R4,M04,0x4bdecfa9,11);
	ROUND3(R4,R5,R22,R3,M07,0xf6bb4b60,16);
	ROUND3(R3,R4,R5,R22,M10,0xbebfbc70,23);
	ROUND3(R22,R3,R4,R5,M13,0x289b7ec6, 4);
	ROUND3(R5,R22,R3,R4,M00,0xeaa127fa,11);
	ROUND3(R4,R5,R22,R3,M03,0xd4ef3085,16);
	ROUND3(R3,R4,R5,R22,M06, 0x4881d05,23);
	ROUND3(R22,R3,R4,R5,M09,0xd9d4d039, 4);
	ROUND3(R5,R22,R3,R4,M12,0xe6db99e5,11);
	ROUND3(R4,R5,R22,R3,M15,0x1fa27cf8,16);
	ROUND3(R3,R4,R5,R22,M02,0xc4ac5665,23);

	ROUND4(R22,R3,R4,R5,M00,0xf4292244, 6);
	ROUND4(R5,R22,R3,R4,M07,0x432aff97,10);
	ROUND4(R4,R5,R22,R3,M14,0xab9423a7,15);
	ROUND4(R3,R4,R5,R22,M05,0xfc93a039,21);
	ROUND4(R22,R3,R4,R5,M12,0x655b59c3, 6);
	ROUND4(R5,R22,R3,R4,M03,0x8f0ccc92,10);
	ROUND4(R4,R5,R22,R3,M10,0xffeff47d,15);
	ROUND4(R3,R4,R5,R22,M01,0x85845dd1,21);
	ROUND4(R22,R3,R4,R5,M08,0x6fa87e4f, 6);
	ROUND4(R5,R22,R3,R4,M15,0xfe2ce6e0,10);
	ROUND4(R4,R5,R22,R3,M06,0xa3014314,15);
	ROUND4(R3,R4,R5,R22,M13,0x4e0811a1,21);
	ROUND4(R22,R3,R4,R5,M04,0xf7537e82, 6);
	ROUND4(R5,R22,R3,R4,M11,0xbd3af235,10);
	ROUND4(R4,R5,R22,R3,M02,0x2ad7d2bb,15);
	ROUND4(R3,R4,R5,R22,M09,0xeb86d391,21);

	ADD	R14, R22
	ADD	R15, R3
	ADD	R16, R4
	ADD	R17, R5
	ADD	$64, R6
	BC	16, 0, loop // bdnz

end:
	MOVD	dig+0(FP), R10
	MOVWZ	R22, 0(R10)
	MOVWZ	R3, 4(R10)
	MOVWZ	R4, 8(R10)
	MOVWZ	R5, 12(R10)

	RET