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2 - 1 
	TEXT	_sha1block+0(SB),$328
2 
 
3 
/*
4 
 * wp[off] = x;
5 
 * x += A <<< 5;
6 
 * E += 0xca62c1d6 + x;
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 * x = FN(B,C,D);
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 * E += x;
9 
 * B >>> 2
10 
 */
11 
#define BODYX(off,FN,V,A,B,C,D,E)\
12 
	FN(B,C,D)\
13 
	ADDU TMP1,E;\
14 
	ADDU V,E;\
15 
	MOVW TMP2,off(WREG);\
16 
	ADDU TMP2,E;\
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	SLL $5,A,TMP3;\
18 
	SRL $27,A,TMP4;\
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	OR TMP3,TMP4;\
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	ADDU TMP4,E;\
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	SLL $30,B,TMP4;\
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	SRL $2,B;\
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	OR TMP4,B
24 
 
25 
/*
26 
 * x = data[i]
27 
 * BODYX
28 
 */
29 
#define BODY1(off,FN,V,A,B,C,D,E)\
30 
	MOVBU off(DATAREG),TMP2;\
31 
	MOVBU (off+1)(DATAREG),TMP3;\
32 
	MOVBU (off+2)(DATAREG),TMP1;\
33 
	MOVBU (off+3)(DATAREG),TMP4;\
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	SLL $24,TMP2;\
35 
	SLL $16,TMP3;\
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	OR TMP3,TMP2;\
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	SLL $8,TMP1;\
38 
	OR TMP1,TMP2;\
39 
	OR TMP4,TMP2;\
40 
	BODYX(off,FN,V,A,B,C,D,E)
41 
 
42 
/*
43 
 * x = (wp[off-3] ^ wp[off-8] ^ wp[off-14] ^ wp[off-16]) <<< 1;
44 
 * BODYX
45 
 */
46 
#define BODY(off,FN,V,A,B,C,D,E)\
47 
	MOVW (off-64)(WREG),TMP1;\
48 
	MOVW (off-56)(WREG),TMP2;\
49 
	MOVW (off-32)(WREG),TMP3;\
50 
	MOVW (off-12)(WREG),TMP4;\
51 
	XOR TMP1,TMP2;\
52 
	XOR TMP3,TMP2;\
53 
	XOR TMP4,TMP2;\
54 
	SLL $1,TMP2,TMP1;\
55 
	SRL $31,TMP2;\
56 
	OR TMP1,TMP2;\
57 
	BODYX(off,FN,V,A,B,C,D,E)
58 
 
59 
/*
60 
 * fn1 = (((C^D)&B)^D);
61 
 */
62 
#define FN1(B,C,D)\
63 
	XOR C,D,TMP1;\
64 
	AND B,TMP1;\
65 
	XOR D,TMP1;
66 
 
67 
/*
68 
 * fn24 = B ^ C ^ D
69 
 */
70 
#define FN24(B,C,D)\
71 
	XOR B,C,TMP1;\
72 
	XOR D,TMP1;
73 
 
74 
/*
75 
 * fn3 = ((B ^ C) & (D ^ B)) ^ B
76 
 */
77 
#define FN3(B,C,D)\
78 
	XOR B,C,TMP1;\
79 
	XOR B,D,TMP4;\
80 
	AND TMP4,TMP1;\
81 
	XOR B,TMP1;
82 
 
83 
/*
84 
 * stack offsets
85 
 * void vtSha1Block(ulong *STATE, uchar *DATA, int LEN)
86 
 */
87 
#define	DATA	0
88 
#define	LEN	4
89 
#define	STATE	8
90 
 
91 
/*
92 
 * stack offsets for locals
93 
 * ulong w[80];
94 
 * uchar *edata;
95 
 * ulong *w15, *w40, *w60, *w80;
96 
 * register local
97 
 * ulong *wp = BP
98 
 * ulong a = eax, b = ebx, c = ecx, d = edx, e = esi
99 
 * ulong tmp = edi
100 
 */
101 
#define WARRAY	(-4-(80*4))
102 
 
103 
#define	AREG		R5
104 
#define BREG		R6
105 
#define CREG		R7
106 
#define DREG		R8
107 
#define EREG		R9
108 
#define DATAREG		R1
109 
#define STREG		R11
110 
#define WREG		R12
111 
#define W15REG		R13
112 
#define W60REG		R14
113 
#define W40REG		R15
114 
#define W80REG		R16
115 
#define EDREG		R17
116 
#define VREG		R18
117 
 
118 
#define TMP1		R10
119 
#define TMP2		R2
120 
#define TMP3		R3
121 
#define TMP4		R4
122 
#define TMP5		R19
123 
 
124 
	MOVW len+LEN(FP),TMP1
125 
	MOVW state+STATE(FP),STREG
126 
	ADDU DATAREG,TMP1,EDREG
127 
 
128 
	MOVW 0(STREG),AREG
129 
	MOVW 4(STREG),BREG
130 
	MOVW 8(STREG),CREG
131 
	MOVW 12(STREG),DREG
132 
	MOVW 16(STREG),EREG
133 
 
134 
	MOVW $warray+WARRAY(SP),WREG
135 
	ADDU $(15*4),WREG,W15REG
136 
	ADDU $(40*4),WREG,W40REG
137 
	ADDU $(60*4),WREG,W60REG
138 
	ADDU $(80*4),WREG,W80REG
139 
 
140 
mainloop:
141 
	MOVW $warray+WARRAY(SP),WREG
142 
 
143 
	MOVW $0x5a827999,VREG
144 
loop1:
145 
	BODY1(0,FN1,VREG,AREG,BREG,CREG,DREG,EREG)
146 
	BODY1(4,FN1,VREG,EREG,AREG,BREG,CREG,DREG)
147 
	BODY1(8,FN1,VREG,DREG,EREG,AREG,BREG,CREG)
148 
	BODY1(12,FN1,VREG,CREG,DREG,EREG,AREG,BREG)
149 
	BODY1(16,FN1,VREG,BREG,CREG,DREG,EREG,AREG)
150 
 
151 
	ADDU $20,DATAREG
152 
	ADDU $20,WREG
153 
	BNE WREG,W15REG,loop1
154 
 
155 
	BODY1(0,FN1,VREG,AREG,BREG,CREG,DREG,EREG)
156 
	ADDU $4,DATAREG
157 
 
158 
	BODY(4,FN1,VREG,EREG,AREG,BREG,CREG,DREG)
159 
	BODY(8,FN1,VREG,DREG,EREG,AREG,BREG,CREG)
160 
	BODY(12,FN1,VREG,CREG,DREG,EREG,AREG,BREG)
161 
	BODY(16,FN1,VREG,BREG,CREG,DREG,EREG,AREG)
162 
 
163 
	ADDU $20,WREG
164 
 
165 
	MOVW $0x6ed9eba1,VREG
166 
loop2:
167 
	BODY(0,FN24,VREG,AREG,BREG,CREG,DREG,EREG)
168 
	BODY(4,FN24,VREG,EREG,AREG,BREG,CREG,DREG)
169 
	BODY(8,FN24,VREG,DREG,EREG,AREG,BREG,CREG)
170 
	BODY(12,FN24,VREG,CREG,DREG,EREG,AREG,BREG)
171 
	BODY(16,FN24,VREG,BREG,CREG,DREG,EREG,AREG)
172 
 
173 
	ADDU $20,WREG
174 
	BNE WREG,W40REG,loop2
175 
 
176 
	MOVW $0x8f1bbcdc,VREG
177 
loop3:
178 
	BODY(0,FN3,VREG,AREG,BREG,CREG,DREG,EREG)
179 
	BODY(4,FN3,VREG,EREG,AREG,BREG,CREG,DREG)
180 
	BODY(8,FN3,VREG,DREG,EREG,AREG,BREG,CREG)
181 
	BODY(12,FN3,VREG,CREG,DREG,EREG,AREG,BREG)
182 
	BODY(16,FN3,VREG,BREG,CREG,DREG,EREG,AREG)
183 
 
184 
	ADDU $20,WREG
185 
	BNE WREG,W60REG,loop3
186 
 
187 
	MOVW $0xca62c1d6,VREG
188 
loop4:
189 
	BODY(0,FN24,VREG,AREG,BREG,CREG,DREG,EREG)
190 
	BODY(4,FN24,VREG,EREG,AREG,BREG,CREG,DREG)
191 
	BODY(8,FN24,VREG,DREG,EREG,AREG,BREG,CREG)
192 
	BODY(12,FN24,VREG,CREG,DREG,EREG,AREG,BREG)
193 
	BODY(16,FN24,VREG,BREG,CREG,DREG,EREG,AREG)
194 
 
195 
	ADDU $20,WREG
196 
	BNE WREG,W80REG,loop4
197 
 
198 
	MOVW 0(STREG),TMP1
199 
	MOVW 4(STREG),TMP2
200 
	MOVW 8(STREG),TMP3
201 
	MOVW 12(STREG),TMP4
202 
	MOVW 16(STREG),TMP5
203 
 
204 
	ADDU TMP1,AREG
205 
	ADDU TMP2,BREG
206 
	ADDU TMP3,CREG
207 
	ADDU TMP4,DREG
208 
	ADDU TMP5,EREG
209 
 
210 
	MOVW AREG,0(STREG)
211 
	MOVW BREG,4(STREG)
212 
	MOVW CREG,8(STREG)
213 
	MOVW DREG,12(STREG)
214 
	MOVW EREG,16(STREG)
215 
 
216 
	BNE DATAREG,EDREG,mainloop
217 
 
218 
	RET
219 
 
220 
	END