1/*
2 * arch/ia64/lib/xor.S
3 *
4 * Optimized RAID-5 checksumming functions for IA-64.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * You should have received a copy of the GNU General Public License
12 * (for example /usr/src/linux/COPYING); if not, write to the Free
13 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
14 */
15
16#include <asm/asmmacro.h>
17
18GLOBAL_ENTRY(xor_ia64_2)
19	.prologue
20	.fframe 0
21	.save ar.pfs, r31
22	alloc r31 = ar.pfs, 3, 0, 13, 16
23	.save ar.lc, r30
24	mov r30 = ar.lc
25	.save pr, r29
26	mov r29 = pr
27	;;
28	.body
29	mov r8 = in1
30	mov ar.ec = 6 + 2
31	shr in0 = in0, 3
32	;;
33	adds in0 = -1, in0
34	mov r16 = in1
35	mov r17 = in2
36	;;
37	mov ar.lc = in0
38	mov pr.rot = 1 << 16
39	;;
40	.rotr s1[6+1], s2[6+1], d[2]
41	.rotp p[6+2]
420:
43(p[0])	ld8.nta s1[0] = [r16], 8
44(p[0])	ld8.nta s2[0] = [r17], 8
45(p[6])	xor d[0] = s1[6], s2[6]
46(p[6+1])st8.nta [r8] = d[1], 8
47	nop.f 0
48	br.ctop.dptk.few 0b
49	;;
50	mov ar.lc = r30
51	mov pr = r29, -1
52	br.ret.sptk.few rp
53END(xor_ia64_2)
54
55GLOBAL_ENTRY(xor_ia64_3)
56	.prologue
57	.fframe 0
58	.save ar.pfs, r31
59	alloc r31 = ar.pfs, 4, 0, 20, 24
60	.save ar.lc, r30
61	mov r30 = ar.lc
62	.save pr, r29
63	mov r29 = pr
64	;;
65	.body
66	mov r8 = in1
67	mov ar.ec = 6 + 2
68	shr in0 = in0, 3
69	;;
70	adds in0 = -1, in0
71	mov r16 = in1
72	mov r17 = in2
73	;;
74	mov r18 = in3
75	mov ar.lc = in0
76	mov pr.rot = 1 << 16
77	;;
78	.rotr s1[6+1], s2[6+1], s3[6+1], d[2]
79	.rotp p[6+2]
800:
81(p[0])	ld8.nta s1[0] = [r16], 8
82(p[0])	ld8.nta s2[0] = [r17], 8
83(p[6])	xor d[0] = s1[6], s2[6]
84	;;
85(p[0])	ld8.nta s3[0] = [r18], 8
86(p[6+1])st8.nta [r8] = d[1], 8
87(p[6])	xor d[0] = d[0], s3[6]
88	br.ctop.dptk.few 0b
89	;;
90	mov ar.lc = r30
91	mov pr = r29, -1
92	br.ret.sptk.few rp
93END(xor_ia64_3)
94
95GLOBAL_ENTRY(xor_ia64_4)
96	.prologue
97	.fframe 0
98	.save ar.pfs, r31
99	alloc r31 = ar.pfs, 5, 0, 27, 32
100	.save ar.lc, r30
101	mov r30 = ar.lc
102	.save pr, r29
103	mov r29 = pr
104	;;
105	.body
106	mov r8 = in1
107	mov ar.ec = 6 + 2
108	shr in0 = in0, 3
109	;;
110	adds in0 = -1, in0
111	mov r16 = in1
112	mov r17 = in2
113	;;
114	mov r18 = in3
115	mov ar.lc = in0
116	mov pr.rot = 1 << 16
117	mov r19 = in4
118	;;
119	.rotr s1[6+1], s2[6+1], s3[6+1], s4[6+1], d[2]
120	.rotp p[6+2]
1210:
122(p[0])	ld8.nta s1[0] = [r16], 8
123(p[0])	ld8.nta s2[0] = [r17], 8
124(p[6])	xor d[0] = s1[6], s2[6]
125(p[0])	ld8.nta s3[0] = [r18], 8
126(p[0])	ld8.nta s4[0] = [r19], 8
127(p[6])	xor r20 = s3[6], s4[6]
128	;;
129(p[6+1])st8.nta [r8] = d[1], 8
130(p[6])	xor d[0] = d[0], r20
131	br.ctop.dptk.few 0b
132	;;
133	mov ar.lc = r30
134	mov pr = r29, -1
135	br.ret.sptk.few rp
136END(xor_ia64_4)
137
138GLOBAL_ENTRY(xor_ia64_5)
139	.prologue
140	.fframe 0
141	.save ar.pfs, r31
142	alloc r31 = ar.pfs, 6, 0, 34, 40
143	.save ar.lc, r30
144	mov r30 = ar.lc
145	.save pr, r29
146	mov r29 = pr
147	;;
148	.body
149	mov r8 = in1
150	mov ar.ec = 6 + 2
151	shr in0 = in0, 3
152	;;
153	adds in0 = -1, in0
154	mov r16 = in1
155	mov r17 = in2
156	;;
157	mov r18 = in3
158	mov ar.lc = in0
159	mov pr.rot = 1 << 16
160	mov r19 = in4
161	mov r20 = in5
162	;;
163	.rotr s1[6+1], s2[6+1], s3[6+1], s4[6+1], s5[6+1], d[2]
164	.rotp p[6+2]
1650:
166(p[0])	ld8.nta s1[0] = [r16], 8
167(p[0])	ld8.nta s2[0] = [r17], 8
168(p[6])	xor d[0] = s1[6], s2[6]
169(p[0])	ld8.nta s3[0] = [r18], 8
170(p[0])	ld8.nta s4[0] = [r19], 8
171(p[6])	xor r21 = s3[6], s4[6]
172	;;
173(p[0])	ld8.nta s5[0] = [r20], 8
174(p[6+1])st8.nta [r8] = d[1], 8
175(p[6])	xor d[0] = d[0], r21
176	;;
177(p[6])	  xor d[0] = d[0], s5[6]
178	nop.f 0
179	br.ctop.dptk.few 0b
180	;;
181	mov ar.lc = r30
182	mov pr = r29, -1
183	br.ret.sptk.few rp
184END(xor_ia64_5)
185