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2 - 1 
	TEXT	_sha1block+0(SB),$352
2 
 
3 
/* x = (wp[off-f] ^ wp[off-8] ^ wp[off-14] ^ wp[off-16]) <<< 1;
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 * wp[off] = x;
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 * x += A <<< 5;
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 * E += 0xca62c1d6 + x;
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 * x = FN(B,C,D);
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 * E += x;
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 * B >>> 2
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 */
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#define BSWAPDI	BYTE $0x0f; BYTE $0xcf;
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#define BODY(off,FN,V,A,B,C,D,E)\
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	MOVL (off-64)(BP),DI;\
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	XORL (off-56)(BP),DI;\
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	XORL (off-32)(BP),DI;\
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	XORL (off-12)(BP),DI;\
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	ROLL $1,DI;\
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	MOVL DI,off(BP);\
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	LEAL V(DI)(E*1),E;\
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	MOVL A,DI;\
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	ROLL $5,DI;\
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	ADDL DI,E;\
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	FN(B,C,D)\
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	ADDL DI,E;\
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	RORL $2,B;\
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#define BODY0(off,FN,V,A,B,C,D,E)\
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	MOVL off(BX),DI;\
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	BSWAPDI;\
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	MOVL DI,off(BP);\
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	LEAL V(DI)(E*1),E;\
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	MOVL A,DI;\
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	ROLL $5,DI;\
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	ADDL DI,E;\
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	FN(B,C,D)\
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	ADDL DI,E;\
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	RORL $2,B;\
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/*
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 * fn1 = (((C^D)&B)^D);
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 */
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#define FN1(B,C,D)\
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	MOVL C,DI;\
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	XORL D,DI;\
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	ANDL B,DI;\
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	XORL D,DI;\
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/*
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 * fn24 = B ^ C ^ D
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 */
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#define FN24(B,C,D)\
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	MOVL B,DI;\
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	XORL C,DI;\
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	XORL D,DI;\
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57 
/*
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 * fn3 = ((B ^ C) & (D ^= B)) ^ B
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 * D ^= B to restore D
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 */
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#define FN3(B,C,D)\
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	MOVL B,DI;\
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	XORL C,DI;\
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	XORL B,D;\
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	ANDL D,DI;\
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	XORL B,DI;\
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	XORL B,D;\
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/*
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 * stack offsets
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 * void sha1block(uchar *DATA, int LEN, ulong *STATE)
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 */
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#define	DATA	0
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#define	LEN	4
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#define	STATE	8
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/*
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 * stack offsets for locals
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 * ulong w[80];
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 * uchar *edata;
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 * ulong *w15, *w40, *w60, *w80;
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 * register local
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 * ulong *wp = BP
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 * ulong a = eax, b = ebx, c = ecx, d = edx, e = esi
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 * ulong tmp = edi
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 */
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#define WARRAY	(-4-(80*4))
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#define TMP1	(-8-(80*4))
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#define TMP2	(-12-(80*4))
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#define W15	(-16-(80*4))
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#define W40	(-20-(80*4))
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#define W60	(-24-(80*4))
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#define W80	(-28-(80*4))
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#define EDATA	(-32-(80*4))
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	MOVL data+DATA(FP),AX
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	ADDL len+LEN(FP),AX
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	MOVL AX,edata+EDATA(SP)
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100 
	LEAL aw15+(WARRAY+15*4)(SP),DI
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	MOVL DI,w15+W15(SP)
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	LEAL aw40+(WARRAY+40*4)(SP),DX
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	MOVL DX,w40+W40(SP)
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	LEAL aw60+(WARRAY+60*4)(SP),CX
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	MOVL CX,w60+W60(SP)
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	LEAL aw80+(WARRAY+80*4)(SP),DI
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	MOVL DI,w80+W80(SP)
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109 
mainloop:
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	LEAL warray+WARRAY(SP),BP
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	MOVL state+STATE(FP),DI
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	MOVL (DI),AX
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	MOVL 4(DI),BX
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	MOVL BX,tmp1+TMP1(SP)
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	MOVL 8(DI),CX
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	MOVL 12(DI),DX
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	MOVL 16(DI),SI
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	MOVL data+DATA(FP),BX
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122 
loop1:
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	BODY0(0,FN1,0x5a827999,AX,tmp1+TMP1(SP),CX,DX,SI)
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	MOVL SI,tmp2+TMP2(SP)
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	BODY0(4,FN1,0x5a827999,SI,AX,tmp1+TMP1(SP),CX,DX)
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	MOVL tmp1+TMP1(SP),SI
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	BODY0(8,FN1,0x5a827999,DX,tmp2+TMP2(SP),AX,SI,CX)
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	BODY0(12,FN1,0x5a827999,CX,DX,tmp2+TMP2(SP),AX,SI)
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	MOVL SI,tmp1+TMP1(SP)
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	BODY0(16,FN1,0x5a827999,SI,CX,DX,tmp2+TMP2(SP),AX)
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	MOVL tmp2+TMP2(SP),SI
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133 
	ADDL $20,BX
134 
	ADDL $20,BP
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	CMPL BP,w15+W15(SP)
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	JCS loop1
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138 
	BODY0(0,FN1,0x5a827999,AX,tmp1+TMP1(SP),CX,DX,SI)
139 
	ADDL $4,BX
140 
	MOVL BX,data+DATA(FP)
141 
	MOVL tmp1+TMP1(SP),BX
142 
 
143 
	BODY(4,FN1,0x5a827999,SI,AX,BX,CX,DX)
144 
	BODY(8,FN1,0x5a827999,DX,SI,AX,BX,CX)
145 
	BODY(12,FN1,0x5a827999,CX,DX,SI,AX,BX)
146 
	BODY(16,FN1,0x5a827999,BX,CX,DX,SI,AX)
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148 
	ADDL $20,BP
149 
 
150 
loop2:
151 
	BODY(0,FN24,0x6ed9eba1,AX,BX,CX,DX,SI)
152 
	BODY(4,FN24,0x6ed9eba1,SI,AX,BX,CX,DX)
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	BODY(8,FN24,0x6ed9eba1,DX,SI,AX,BX,CX)
154 
	BODY(12,FN24,0x6ed9eba1,CX,DX,SI,AX,BX)
155 
	BODY(16,FN24,0x6ed9eba1,BX,CX,DX,SI,AX)
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157 
	ADDL $20,BP
158 
	CMPL BP,w40+W40(SP)
159 
	JCS loop2
160 
 
161 
loop3:
162 
	BODY(0,FN3,0x8f1bbcdc,AX,BX,CX,DX,SI)
163 
	BODY(4,FN3,0x8f1bbcdc,SI,AX,BX,CX,DX)
164 
	BODY(8,FN3,0x8f1bbcdc,DX,SI,AX,BX,CX)
165 
	BODY(12,FN3,0x8f1bbcdc,CX,DX,SI,AX,BX)
166 
	BODY(16,FN3,0x8f1bbcdc,BX,CX,DX,SI,AX)
167 
 
168 
	ADDL $20,BP
169 
	CMPL BP,w60+W60(SP)
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	JCS loop3
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172 
loop4:
173 
	BODY(0,FN24,0xca62c1d6,AX,BX,CX,DX,SI)
174 
	BODY(4,FN24,0xca62c1d6,SI,AX,BX,CX,DX)
175 
	BODY(8,FN24,0xca62c1d6,DX,SI,AX,BX,CX)
176 
	BODY(12,FN24,0xca62c1d6,CX,DX,SI,AX,BX)
177 
	BODY(16,FN24,0xca62c1d6,BX,CX,DX,SI,AX)
178 
 
179 
	ADDL $20,BP
180 
	CMPL BP,w80+W80(SP)
181 
	JCS loop4
182 
 
183 
	MOVL state+STATE(FP),DI
184 
	ADDL AX,0(DI)
185 
	ADDL BX,4(DI)
186 
	ADDL CX,8(DI)
187 
	ADDL DX,12(DI)
188 
	ADDL SI,16(DI)
189 
 
190 
	MOVL edata+EDATA(SP),DI
191 
	CMPL data+DATA(FP),DI
192 
	JCS mainloop
193 
 
194 
	RET
195 
	END