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
|
TEXT _sha1block+0(SB),$352
/* x = (wp[off-f] ^ wp[off-8] ^ wp[off-14] ^ wp[off-16]) <<< 1;
* wp[off] = x;
* x += A <<< 5;
* E += 0xca62c1d6 + x;
* x = FN(B,C,D);
* E += x;
* B >>> 2
*/
#define BSWAPDI BYTE $0x0f; BYTE $0xcf;
#define BODY(off,FN,V,A,B,C,D,E)\
MOVL (off-64)(BP),DI;\
XORL (off-56)(BP),DI;\
XORL (off-32)(BP),DI;\
XORL (off-12)(BP),DI;\
ROLL $1,DI;\
MOVL DI,off(BP);\
LEAL V(DI)(E*1),E;\
MOVL A,DI;\
ROLL $5,DI;\
ADDL DI,E;\
FN(B,C,D)\
ADDL DI,E;\
RORL $2,B;\
#define BODY0(off,FN,V,A,B,C,D,E)\
MOVL off(BX),DI;\
BSWAPDI;\
MOVL DI,off(BP);\
LEAL V(DI)(E*1),E;\
MOVL A,DI;\
ROLL $5,DI;\
ADDL DI,E;\
FN(B,C,D)\
ADDL DI,E;\
RORL $2,B;\
/*
* fn1 = (((C^D)&B)^D);
*/
#define FN1(B,C,D)\
MOVL C,DI;\
XORL D,DI;\
ANDL B,DI;\
XORL D,DI;\
/*
* fn24 = B ^ C ^ D
*/
#define FN24(B,C,D)\
MOVL B,DI;\
XORL C,DI;\
XORL D,DI;\
/*
* fn3 = ((B ^ C) & (D ^= B)) ^ B
* D ^= B to restore D
*/
#define FN3(B,C,D)\
MOVL B,DI;\
XORL C,DI;\
XORL B,D;\
ANDL D,DI;\
XORL B,DI;\
XORL B,D;\
/*
* stack offsets
* void sha1block(uchar *DATA, int LEN, ulong *STATE)
*/
#define DATA 0
#define LEN 4
#define STATE 8
/*
* stack offsets for locals
* ulong w[80];
* uchar *edata;
* ulong *w15, *w40, *w60, *w80;
* register local
* ulong *wp = BP
* ulong a = eax, b = ebx, c = ecx, d = edx, e = esi
* ulong tmp = edi
*/
#define WARRAY (-4-(80*4))
#define TMP1 (-8-(80*4))
#define TMP2 (-12-(80*4))
#define W15 (-16-(80*4))
#define W40 (-20-(80*4))
#define W60 (-24-(80*4))
#define W80 (-28-(80*4))
#define EDATA (-32-(80*4))
MOVL data+DATA(FP),AX
ADDL len+LEN(FP),AX
MOVL AX,edata+EDATA(SP)
LEAL aw15+(WARRAY+15*4)(SP),DI
MOVL DI,w15+W15(SP)
LEAL aw40+(WARRAY+40*4)(SP),DX
MOVL DX,w40+W40(SP)
LEAL aw60+(WARRAY+60*4)(SP),CX
MOVL CX,w60+W60(SP)
LEAL aw80+(WARRAY+80*4)(SP),DI
MOVL DI,w80+W80(SP)
mainloop:
LEAL warray+WARRAY(SP),BP
MOVL state+STATE(FP),DI
MOVL (DI),AX
MOVL 4(DI),BX
MOVL BX,tmp1+TMP1(SP)
MOVL 8(DI),CX
MOVL 12(DI),DX
MOVL 16(DI),SI
MOVL data+DATA(FP),BX
loop1:
BODY0(0,FN1,0x5a827999,AX,tmp1+TMP1(SP),CX,DX,SI)
MOVL SI,tmp2+TMP2(SP)
BODY0(4,FN1,0x5a827999,SI,AX,tmp1+TMP1(SP),CX,DX)
MOVL tmp1+TMP1(SP),SI
BODY0(8,FN1,0x5a827999,DX,tmp2+TMP2(SP),AX,SI,CX)
BODY0(12,FN1,0x5a827999,CX,DX,tmp2+TMP2(SP),AX,SI)
MOVL SI,tmp1+TMP1(SP)
BODY0(16,FN1,0x5a827999,SI,CX,DX,tmp2+TMP2(SP),AX)
MOVL tmp2+TMP2(SP),SI
ADDL $20,BX
ADDL $20,BP
CMPL BP,w15+W15(SP)
JCS loop1
BODY0(0,FN1,0x5a827999,AX,tmp1+TMP1(SP),CX,DX,SI)
ADDL $4,BX
MOVL BX,data+DATA(FP)
MOVL tmp1+TMP1(SP),BX
BODY(4,FN1,0x5a827999,SI,AX,BX,CX,DX)
BODY(8,FN1,0x5a827999,DX,SI,AX,BX,CX)
BODY(12,FN1,0x5a827999,CX,DX,SI,AX,BX)
BODY(16,FN1,0x5a827999,BX,CX,DX,SI,AX)
ADDL $20,BP
loop2:
BODY(0,FN24,0x6ed9eba1,AX,BX,CX,DX,SI)
BODY(4,FN24,0x6ed9eba1,SI,AX,BX,CX,DX)
BODY(8,FN24,0x6ed9eba1,DX,SI,AX,BX,CX)
BODY(12,FN24,0x6ed9eba1,CX,DX,SI,AX,BX)
BODY(16,FN24,0x6ed9eba1,BX,CX,DX,SI,AX)
ADDL $20,BP
CMPL BP,w40+W40(SP)
JCS loop2
loop3:
BODY(0,FN3,0x8f1bbcdc,AX,BX,CX,DX,SI)
BODY(4,FN3,0x8f1bbcdc,SI,AX,BX,CX,DX)
BODY(8,FN3,0x8f1bbcdc,DX,SI,AX,BX,CX)
BODY(12,FN3,0x8f1bbcdc,CX,DX,SI,AX,BX)
BODY(16,FN3,0x8f1bbcdc,BX,CX,DX,SI,AX)
ADDL $20,BP
CMPL BP,w60+W60(SP)
JCS loop3
loop4:
BODY(0,FN24,0xca62c1d6,AX,BX,CX,DX,SI)
BODY(4,FN24,0xca62c1d6,SI,AX,BX,CX,DX)
BODY(8,FN24,0xca62c1d6,DX,SI,AX,BX,CX)
BODY(12,FN24,0xca62c1d6,CX,DX,SI,AX,BX)
BODY(16,FN24,0xca62c1d6,BX,CX,DX,SI,AX)
ADDL $20,BP
CMPL BP,w80+W80(SP)
JCS loop4
MOVL state+STATE(FP),DI
ADDL AX,0(DI)
ADDL BX,4(DI)
ADDL CX,8(DI)
ADDL DX,12(DI)
ADDL SI,16(DI)
MOVL edata+EDATA(SP),DI
CMPL data+DATA(FP),DI
JCS mainloop
RET
END
|
