summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/crypto/md5-asm.S
blob: 10cdf5bceebbaf6eb468f75b98f2144502d99efe (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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
/*
 * Fast MD5 implementation for PPC
 *
 * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>

#define rHP	r3
#define rWP	r4

#define rH0	r0
#define rH1	r6
#define rH2	r7
#define rH3	r5

#define rW00	r8
#define rW01	r9
#define rW02	r10
#define rW03	r11
#define rW04	r12
#define rW05	r14
#define rW06	r15
#define rW07	r16
#define rW08	r17
#define rW09	r18
#define rW10	r19
#define rW11	r20
#define rW12	r21
#define rW13	r22
#define rW14	r23
#define rW15	r24

#define rT0	r25
#define rT1	r26

#define INITIALIZE \
	PPC_STLU r1,-INT_FRAME_SIZE(r1); \
	SAVE_8GPRS(14, r1);		/* push registers onto stack	*/ \
	SAVE_4GPRS(22, r1);						   \
	SAVE_GPR(26, r1)

#define FINALIZE \
	REST_8GPRS(14, r1);		/* pop registers from stack	*/ \
	REST_4GPRS(22, r1);						   \
	REST_GPR(26, r1);						   \
	addi	r1,r1,INT_FRAME_SIZE;

#ifdef __BIG_ENDIAN__
#define LOAD_DATA(reg, off) \
	lwbrx		reg,0,rWP;	/* load data			*/
#define INC_PTR \
	addi		rWP,rWP,4;	/* increment per word		*/
#define NEXT_BLOCK			/* nothing to do		*/
#else
#define LOAD_DATA(reg, off) \
	lwz		reg,off(rWP);	/* load data			*/
#define INC_PTR				/* nothing to do		*/
#define NEXT_BLOCK \
	addi		rWP,rWP,64;	/* increment per block		*/
#endif

#define R_00_15(a, b, c, d, w0, w1, p, q, off, k0h, k0l, k1h, k1l) \
	LOAD_DATA(w0, off)		/*    W				*/ \
	and		rT0,b,c;	/* 1: f = b and c		*/ \
	INC_PTR				/*    ptr++			*/ \
	andc		rT1,d,b;	/* 1: f' = ~b and d		*/ \
	LOAD_DATA(w1, off+4)		/*    W				*/ \
	or		rT0,rT0,rT1;	/* 1: f = f or f'		*/ \
	addi		w0,w0,k0l;	/* 1: wk = w + k		*/ \
	add		a,a,rT0;	/* 1: a = a + f			*/ \
	addis		w0,w0,k0h;	/* 1: wk = w + k'		*/ \
	addis		w1,w1,k1h;	/* 2: wk = w + k		*/ \
	add		a,a,w0;		/* 1: a = a + wk		*/ \
	addi		w1,w1,k1l;	/* 2: wk = w + k'		*/ \
	rotrwi		a,a,p;		/* 1: a = a rotl x		*/ \
	add		d,d,w1;		/* 2: a = a + wk		*/ \
	add		a,a,b;		/* 1: a = a + b			*/ \
	and		rT0,a,b;	/* 2: f = b and c		*/ \
	andc		rT1,c,a;	/* 2: f' = ~b and d		*/ \
	or		rT0,rT0,rT1;	/* 2: f = f or f'		*/ \
	add		d,d,rT0;	/* 2: a = a + f			*/ \
	INC_PTR				/*    ptr++			*/ \
	rotrwi		d,d,q;		/* 2: a = a rotl x		*/ \
	add		d,d,a;		/* 2: a = a + b			*/

#define R_16_31(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
	andc		rT0,c,d;	/* 1: f = c and ~d		*/ \
	and		rT1,b,d;	/* 1: f' = b and d		*/ \
	addi		w0,w0,k0l;	/* 1: wk = w + k		*/ \
	or		rT0,rT0,rT1;	/* 1: f = f or f'		*/ \
	addis		w0,w0,k0h;	/* 1: wk = w + k'		*/ \
	add		a,a,rT0;	/* 1: a = a + f			*/ \
	addi		w1,w1,k1l;	/* 2: wk = w + k		*/ \
	add		a,a,w0;		/* 1: a = a + wk		*/ \
	addis		w1,w1,k1h;	/* 2: wk = w + k'		*/ \
	andc		rT0,b,c;	/* 2: f = c and ~d		*/ \
	rotrwi		a,a,p;		/* 1: a = a rotl x		*/ \
	add		a,a,b;		/* 1: a = a + b			*/ \
	add		d,d,w1;		/* 2: a = a + wk		*/ \
	and		rT1,a,c;	/* 2: f' = b and d		*/ \
	or		rT0,rT0,rT1;	/* 2: f = f or f'		*/ \
	add		d,d,rT0;	/* 2: a = a + f			*/ \
	rotrwi		d,d,q;		/* 2: a = a rotl x		*/ \
	add		d,d,a;		/* 2: a = a +b			*/

#define R_32_47(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
	xor		rT0,b,c;	/* 1: f' = b xor c		*/ \
	addi		w0,w0,k0l;	/* 1: wk = w + k		*/ \
	xor		rT1,rT0,d;	/* 1: f = f xor f'		*/ \
	addis		w0,w0,k0h;	/* 1: wk = w + k'		*/ \
	add		a,a,rT1;	/* 1: a = a + f			*/ \
	addi		w1,w1,k1l;	/* 2: wk = w + k		*/ \
	add		a,a,w0;		/* 1: a = a + wk		*/ \
	addis		w1,w1,k1h;	/* 2: wk = w + k'		*/ \
	rotrwi		a,a,p;		/* 1: a = a rotl x		*/ \
	add		d,d,w1;		/* 2: a = a + wk		*/ \
	add		a,a,b;		/* 1: a = a + b			*/ \
	xor		rT1,rT0,a;	/* 2: f = b xor f'		*/ \
	add		d,d,rT1;	/* 2: a = a + f			*/ \
	rotrwi		d,d,q;		/* 2: a = a rotl x		*/ \
	add		d,d,a;		/* 2: a = a + b			*/

#define R_48_63(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
	addi		w0,w0,k0l;	/* 1: w = w + k			*/ \
	orc		rT0,b,d;	/* 1: f = b or ~d		*/ \
	addis		w0,w0,k0h;	/* 1: w = w + k'		*/ \
	xor		rT0,rT0,c;	/* 1: f = f xor c		*/ \
	add		a,a,w0;		/* 1: a = a + wk		*/ \
	addi		w1,w1,k1l;	/* 2: w = w + k			*/ \
	add		a,a,rT0;	/* 1: a = a + f			*/ \
	addis		w1,w1,k1h;	/* 2: w = w + k'		*/ \
	rotrwi		a,a,p;		/* 1: a = a rotl x		*/ \
	add		a,a,b;		/* 1: a = a + b			*/ \
	orc		rT0,a,c;	/* 2: f = b or ~d		*/ \
	add		d,d,w1;		/* 2: a = a + wk		*/ \
	xor		rT0,rT0,b;	/* 2: f = f xor c		*/ \
	add		d,d,rT0;	/* 2: a = a + f			*/ \
	rotrwi		d,d,q;		/* 2: a = a rotl x		*/ \
	add		d,d,a;		/* 2: a = a + b			*/

_GLOBAL(ppc_md5_transform)
	INITIALIZE

	mtctr		r5
	lwz		rH0,0(rHP)
	lwz		rH1,4(rHP)
	lwz		rH2,8(rHP)
	lwz		rH3,12(rHP)

ppc_md5_main:
	R_00_15(rH0, rH1, rH2, rH3, rW00, rW01, 25, 20, 0,
		0xd76b, -23432, 0xe8c8, -18602)
	R_00_15(rH2, rH3, rH0, rH1, rW02, rW03, 15, 10, 8,
		0x2420, 0x70db, 0xc1be, -12562)
	R_00_15(rH0, rH1, rH2, rH3, rW04, rW05, 25, 20, 16,
		0xf57c, 0x0faf, 0x4788, -14806)
	R_00_15(rH2, rH3, rH0, rH1, rW06, rW07, 15, 10, 24,
		0xa830, 0x4613, 0xfd47, -27391)
	R_00_15(rH0, rH1, rH2, rH3, rW08, rW09, 25, 20, 32,
		0x6981, -26408, 0x8b45,  -2129)
	R_00_15(rH2, rH3, rH0, rH1, rW10, rW11, 15, 10, 40,
		0xffff, 0x5bb1, 0x895d, -10306)
	R_00_15(rH0, rH1, rH2, rH3, rW12, rW13, 25, 20, 48,
		0x6b90, 0x1122, 0xfd98, 0x7193)
	R_00_15(rH2, rH3, rH0, rH1, rW14, rW15, 15, 10, 56,
		0xa679, 0x438e, 0x49b4, 0x0821)

	R_16_31(rH0, rH1, rH2, rH3, rW01, rW06, 27, 23,
		0x0d56, 0x6e0c, 0x1810, 0x6d2d)
	R_16_31(rH2, rH3, rH0, rH1, rW11, rW00, 18, 12,
		0x9d02, -32109, 0x124c, 0x2332)
	R_16_31(rH0, rH1, rH2, rH3, rW05, rW10, 27, 23,
		0x8ea7, 0x4a33, 0x0245, -18270)
	R_16_31(rH2, rH3, rH0, rH1, rW15, rW04, 18, 12,
		0x8eee,  -8608, 0xf258,  -5095)
	R_16_31(rH0, rH1, rH2, rH3, rW09, rW14, 27, 23,
		0x969d, -10697, 0x1cbe, -15288)
	R_16_31(rH2, rH3, rH0, rH1, rW03, rW08, 18, 12,
		0x3317, 0x3e99, 0xdbd9, 0x7c15)
	R_16_31(rH0, rH1, rH2, rH3, rW13, rW02, 27, 23,
		0xac4b, 0x7772, 0xd8cf, 0x331d)
	R_16_31(rH2, rH3, rH0, rH1, rW07, rW12, 18, 12,
		0x6a28, 0x6dd8, 0x219a, 0x3b68)

	R_32_47(rH0, rH1, rH2, rH3, rW05, rW08, 28, 21,
		0x29cb, 0x28e5, 0x4218,  -7788)
	R_32_47(rH2, rH3, rH0, rH1, rW11, rW14, 16,  9,
		0x473f, 0x06d1, 0x3aae, 0x3036)
	R_32_47(rH0, rH1, rH2, rH3, rW01, rW04, 28, 21,
		0xaea1, -15134, 0x640b, -11295)
	R_32_47(rH2, rH3, rH0, rH1, rW07, rW10, 16,  9,
		0x8f4c, 0x4887, 0xbc7c, -22499)
	R_32_47(rH0, rH1, rH2, rH3, rW13, rW00, 28, 21,
		0x7eb8, -27199, 0x00ea, 0x6050)
	R_32_47(rH2, rH3, rH0, rH1, rW03, rW06, 16,  9,
		0xe01a, 0x22fe, 0x4447, 0x69c5)
	R_32_47(rH0, rH1, rH2, rH3, rW09, rW12, 28, 21,
		0xb7f3, 0x0253, 0x59b1, 0x4d5b)
	R_32_47(rH2, rH3, rH0, rH1, rW15, rW02, 16,  9,
		0x4701, -27017, 0xc7bd, -19859)

	R_48_63(rH0, rH1, rH2, rH3, rW00, rW07, 26, 22,
		0x0988,  -1462, 0x4c70, -19401)
	R_48_63(rH2, rH3, rH0, rH1, rW14, rW05, 17, 11,
		0xadaf,  -5221, 0xfc99, 0x66f7)
	R_48_63(rH0, rH1, rH2, rH3, rW12, rW03, 26, 22,
		0x7e80, -16418, 0xba1e, -25587)
	R_48_63(rH2, rH3, rH0, rH1, rW10, rW01, 17, 11,
		0x4130, 0x380d, 0xe0c5, 0x738d)
	lwz		rW00,0(rHP)
	R_48_63(rH0, rH1, rH2, rH3, rW08, rW15, 26, 22,
		0xe837, -30770, 0xde8a, 0x69e8)
	lwz		rW14,4(rHP)
	R_48_63(rH2, rH3, rH0, rH1, rW06, rW13, 17, 11,
		0x9e79, 0x260f, 0x256d, -27941)
	lwz		rW12,8(rHP)
	R_48_63(rH0, rH1, rH2, rH3, rW04, rW11, 26, 22,
		0xab75, -20775, 0x4f9e, -28397)
	lwz		rW10,12(rHP)
	R_48_63(rH2, rH3, rH0, rH1, rW02, rW09, 17, 11,
		0x662b, 0x7c56, 0x11b2, 0x0358)

	add		rH0,rH0,rW00
	stw		rH0,0(rHP)
	add		rH1,rH1,rW14
	stw		rH1,4(rHP)
	add		rH2,rH2,rW12
	stw		rH2,8(rHP)
	add		rH3,rH3,rW10
	stw		rH3,12(rHP)
	NEXT_BLOCK

	bdnz		ppc_md5_main

	FINALIZE
	blr