1#include "textflag.h"
2#define R10 g
3#define ROUND()\
4	ADD.S	R2,R0,R0;\
5	ADC	R3,R1,R1;\
6	EOR	R2<<13,R0,R8;\
7	EOR	R3>>19,R8,R8;\
8	EOR	R2>>19,R1,R11;\
9	EOR	R3<<13,R11,R11;\
10	ADD.S	R6,R4,R4;\
11	ADC	R7,R5,R5;\
12	EOR	R6<<16,R4,R2;\
13	EOR	R7>>16,R2,R2;\
14	EOR	R6>>16,R5,R3;\
15	EOR	R7<<16,R3,R3;\
16	ADD.S	R2,R1,R1;\
17	ADC	R3,R0,R0;\
18	EOR	R2<<21,R1,R6;\
19	EOR	R3>>11,R6,R6;\
20	EOR	R2>>11,R0,R7;\
21	EOR	R3<<21,R7,R7;\
22	ADD.S	R8,R4,R4;\
23	ADC	R11,R5,R5;\
24	EOR	R8<<17,R4,R2;\
25	EOR	R11>>15,R2,R2;\
26	EOR	R8>>15,R5,R3;\
27	EOR	R11<<17,R3,R3;\
28	ADD.S	R2,R1,R1;\
29	ADC	R3,R0,R0;\
30	EOR	R2<<13,R1,R8;\
31	EOR	R3>>19,R8,R8;\
32	EOR	R2>>19,R0,R11;\
33	EOR	R3<<13,R11,R11;\
34	ADD.S	R6,R5,R5;\
35	ADC	R7,R4,R4;\
36	EOR	R6<<16,R5,R2;\
37	EOR	R7>>16,R2,R2;\
38	EOR	R6>>16,R4,R3;\
39	EOR	R7<<16,R3,R3;\
40	ADD.S	R2,R0,R0;\
41	ADC	R3,R1,R1;\
42	EOR	R2<<21,R0,R6;\
43	EOR	R3>>11,R6,R6;\
44	EOR	R2>>11,R1,R7;\
45	EOR	R3<<21,R7,R7;\
46	ADD.S	R8,R5,R5;\
47	ADC	R11,R4,R4;\
48	EOR	R8<<17,R5,R2;\
49	EOR	R11>>15,R2,R2;\
50	EOR	R8>>15,R4,R3;\
51	EOR	R11<<17,R3,R3;\
52
53// Hash(k0, k1 uint64, b []byte) uint64
54TEXT ·Hash(SB),NOSPLIT,$8-36
55	MOVW	R10,sav-8(SP)
56	MOVW	k0_lo+0(FP),R12
57	MOVW	k0_hi+4(FP),R14
58	MOVW	$0x70736575,R0
59	MOVW	$0x736f6d65,R1
60	MOVW	$0x6e657261,R4
61	MOVW	$0x6c796765,R5
62	EOR	R12,R0,R0
63	EOR	R14,R1,R1
64	EOR	R12,R4,R4
65	EOR	R14,R5,R5
66	MOVW	k1_lo+8(FP),R12
67	MOVW	k1_hi+12(FP),R14
68	MOVW	$0x6e646f6d,R2
69	MOVW	$0x646f7261,R3
70	MOVW	$0x79746573,R6
71	MOVW	$0x74656462,R7
72	EOR	R12,R2,R2
73	EOR	R14,R3,R3
74	EOR	R12,R6,R6
75	EOR	R14,R7,R7
76	MOVW	b+16(FP),R10
77	MOVW	b_len+20(FP),R11
78	ADD	R10,R11,R11
79	MOVW	R11,endb-4(SP)
80	AND.S	$3,R10,R8
81	BNE	hashloopunaligned
82hashloop:
83	MOVW	endb-4(SP),R11
84	SUB	R10,R11,R11
85	SUB.S	$8,R11
86	BLO	hashend
87	MOVM.IA.W (R10),[R12,R14]
88	EOR	R12,R6,R6
89	EOR	R14,R7,R7
90	ROUND()
91	EOR	R12,R0,R0
92	EOR	R14,R1,R1
93	B	hashloop
94hashloopunaligned:
95	MOVW	endb-4(SP),R11
96	SUB	R10,R11,R11
97	SUB.S	$8,R11
98	BLO	hashend
99	MOVB	(R10),R12
100	MOVB	1(R10),R11
101	ORR	R11<<8,R12,R12
102	MOVB	2(R10),R11
103	ORR	R11<<16,R12,R12
104	MOVB	3(R10),R11
105	ORR	R11<<24,R12,R12
106	MOVB	4(R10),R14
107	MOVB	5(R10),R11
108	ORR	R11<<8,R14,R14
109	MOVB	6(R10),R11
110	ORR	R11<<16,R14,R14
111	MOVB	7(R10),R11
112	ORR	R11<<24,R14,R14
113	ADD	$8,R10,R10
114	EOR	R12,R6,R6
115	EOR	R14,R7,R7
116	ROUND()
117	EOR	R12,R0,R0
118	EOR	R14,R1,R1
119	B	hashloopunaligned
120hashend:
121	MOVW	$0x0,R12
122	MOVW	$0x0,R14
123	RSB	$0,R11,R11
124	AND.S	$7,R11
125	BEQ	hashlast
126	MOVW	(R10),R12
127	SLL	$3,R11
128	AND	$63,R11
129	SUB.S	$32,R11,R11
130	BEQ	hashlast
131	BLO	hashhi
132	MOVW	R12<<R11,R12
133	MOVW	R12>>R11,R12
134	B	hashlast
135hashhi:
136	ADD	$32,R11
137	MOVW	4(R10),R14
138	MOVW	R14<<R11,R14
139	MOVW	R14>>R11,R14
140hashlast:
141	MOVW	b_len+20(FP),R11
142	ORR	R11<<24,R14,R14
143	EOR	R12,R6,R6
144	EOR	R14,R7,R7
145	ROUND()
146	EOR	R12,R0,R0
147	EOR	R14,R1,R1
148	EOR	$255,R4
149	ROUND()
150	ROUND()
151	EOR	R2,R0,R0
152	EOR	R3,R1,R1
153	EOR	R6,R4,R4
154	EOR	R7,R5,R5
155	EOR	R4,R0,R0
156	EOR	R5,R1,R1
157	MOVW	sav-8(SP),R10
158	MOVW	R0,ret_lo+28(FP)
159	MOVW	R1,ret_hi+32(FP)
160	RET
161