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)