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/*
 * arch/ia64/lib/xor.S
 *
 * Optimized RAID-5 checksumming functions for IA-64.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * You should have received a copy of the GNU General Public License
 * (for example /usr/src/linux/COPYING); if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <asm/asmmacro.h>

GLOBAL_ENTRY(xor_ia64_2)
        .prologue
        .fframe 0
        .save ar.pfs, r31
        alloc r31 = ar.pfs, 3, 0, 13, 16
        .save ar.lc, r30
        mov r30 = ar.lc
        .save pr, r29
        mov r29 = pr
        ;;
        .body
        mov r8 = in1
        mov ar.ec = 6 + 2
        shr in0 = in0, 3
        ;;
        adds in0 = -1, in0
        mov r16 = in1
        mov r17 = in2
        ;;
        mov ar.lc = in0
        mov pr.rot = 1 << 16
        ;;
        .rotr s1[6+1], s2[6+1], d[2]
        .rotp p[6+2]
0:
(p[0])  ld8.nta s1[0] = [r16], 8
(p[0])  ld8.nta s2[0] = [r17], 8
(p[6])  xor d[0] = s1[6], s2[6]
(p[6+1])st8.nta [r8] = d[1], 8
        nop.f 0
        br.ctop.dptk.few 0b
        ;;
        mov ar.lc = r30
        mov pr = r29, -1
        br.ret.sptk.few rp
END(xor_ia64_2)

GLOBAL_ENTRY(xor_ia64_3)
        .prologue
        .fframe 0
        .save ar.pfs, r31
        alloc r31 = ar.pfs, 4, 0, 20, 24
        .save ar.lc, r30
        mov r30 = ar.lc
        .save pr, r29
        mov r29 = pr
        ;;
        .body
        mov r8 = in1
        mov ar.ec = 6 + 2
        shr in0 = in0, 3
        ;;
        adds in0 = -1, in0
        mov r16 = in1
        mov r17 = in2
        ;;
        mov r18 = in3
        mov ar.lc = in0
        mov pr.rot = 1 << 16
        ;;
        .rotr s1[6+1], s2[6+1], s3[6+1], d[2]
        .rotp p[6+2]
0:
(p[0])  ld8.nta s1[0] = [r16], 8
(p[0])  ld8.nta s2[0] = [r17], 8
(p[6])  xor d[0] = s1[6], s2[6]
        ;;
(p[0])  ld8.nta s3[0] = [r18], 8
(p[6+1])st8.nta [r8] = d[1], 8
(p[6])  xor d[0] = d[0], s3[6]
        br.ctop.dptk.few 0b
        ;;
        mov ar.lc = r30
        mov pr = r29, -1
        br.ret.sptk.few rp
END(xor_ia64_3)

GLOBAL_ENTRY(xor_ia64_4)
        .prologue
        .fframe 0
        .save ar.pfs, r31
        alloc r31 = ar.pfs, 5, 0, 27, 32
        .save ar.lc, r30
        mov r30 = ar.lc
        .save pr, r29
        mov r29 = pr
        ;;
        .body
        mov r8 = in1
        mov ar.ec = 6 + 2
        shr in0 = in0, 3
        ;;
        adds in0 = -1, in0
        mov r16 = in1
        mov r17 = in2
        ;;
        mov r18 = in3
        mov ar.lc = in0
        mov pr.rot = 1 << 16
        mov r19 = in4
        ;;
        .rotr s1[6+1], s2[6+1], s3[6+1], s4[6+1], d[2]
        .rotp p[6+2]
0:
(p[0])  ld8.nta s1[0] = [r16], 8
(p[0])  ld8.nta s2[0] = [r17], 8
(p[6])  xor d[0] = s1[6], s2[6]
(p[0])  ld8.nta s3[0] = [r18], 8
(p[0])  ld8.nta s4[0] = [r19], 8
(p[6])  xor r20 = s3[6], s4[6]
        ;;
(p[6+1])st8.nta [r8] = d[1], 8
(p[6])  xor d[0] = d[0], r20
        br.ctop.dptk.few 0b
        ;;
        mov ar.lc = r30
        mov pr = r29, -1
        br.ret.sptk.few rp
END(xor_ia64_4)

GLOBAL_ENTRY(xor_ia64_5)
        .prologue
        .fframe 0
        .save ar.pfs, r31
        alloc r31 = ar.pfs, 6, 0, 34, 40
        .save ar.lc, r30
        mov r30 = ar.lc
        .save pr, r29
        mov r29 = pr
        ;;
        .body
        mov r8 = in1
        mov ar.ec = 6 + 2
        shr in0 = in0, 3
        ;;
        adds in0 = -1, in0
        mov r16 = in1
        mov r17 = in2
        ;;
        mov r18 = in3
        mov ar.lc = in0
        mov pr.rot = 1 << 16
        mov r19 = in4
        mov r20 = in5
        ;;
        .rotr s1[6+1], s2[6+1], s3[6+1], s4[6+1], s5[6+1], d[2]
        .rotp p[6+2]
0:
(p[0])  ld8.nta s1[0] = [r16], 8
(p[0])  ld8.nta s2[0] = [r17], 8
(p[6])  xor d[0] = s1[6], s2[6]
(p[0])  ld8.nta s3[0] = [r18], 8
(p[0])  ld8.nta s4[0] = [r19], 8
(p[6])  xor r21 = s3[6], s4[6]
        ;;
(p[0])  ld8.nta s5[0] = [r20], 8
(p[6+1])st8.nta [r8] = d[1], 8
(p[6])  xor d[0] = d[0], r21
        ;;
(p[6])    xor d[0] = d[0], s5[6]
        nop.f 0
        br.ctop.dptk.few 0b
        ;;
        mov ar.lc = r30
        mov pr = r29, -1
        br.ret.sptk.few rp
END(xor_ia64_5)