1dnl SPARC v9 mpn_lshift 2 3dnl Contributed to the GNU project by David Miller. 4 5dnl Copyright 2013 Free Software Foundation, Inc. 6 7dnl This file is part of the GNU MP Library. 8dnl 9dnl The GNU MP Library is free software; you can redistribute it and/or modify 10dnl it under the terms of either: 11dnl 12dnl * the GNU Lesser General Public License as published by the Free 13dnl Software Foundation; either version 3 of the License, or (at your 14dnl option) any later version. 15dnl 16dnl or 17dnl 18dnl * the GNU General Public License as published by the Free Software 19dnl Foundation; either version 2 of the License, or (at your option) any 20dnl later version. 21dnl 22dnl or both in parallel, as here. 23dnl 24dnl The GNU MP Library is distributed in the hope that it will be useful, but 25dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27dnl for more details. 28dnl 29dnl You should have received copies of the GNU General Public License and the 30dnl GNU Lesser General Public License along with the GNU MP Library. If not, 31dnl see https://www.gnu.org/licenses/. 32 33include(`../config.m4') 34 35C cycles/limb 36C UltraSPARC 1&2: 2 37C UltraSPARC 3: 2.5 38C UltraSPARC T1: 17.5 39C UltraSPARC T3: 8 40C UltraSPARC T4: 3 41 42C INPUT PARAMETERS 43define(`rp', `%i0') 44define(`up', `%i1') 45define(`n', `%i2') 46define(`cnt', `%i3') 47 48define(`tcnt', `%i4') 49define(`retval', `%i5') 50define(`u0', `%l0') 51define(`u1', `%l1') 52define(`r0', `%l6') 53define(`r1', `%l7') 54define(`u0_off', `%o0') 55define(`u1_off', `%o1') 56define(`r0_off', `%o2') 57define(`r1_off', `%o3') 58 59ASM_START() 60 REGISTER(%g2,#scratch) 61 REGISTER(%g3,#scratch) 62PROLOGUE(mpn_lshift) 63 save %sp, -176, %sp 64 65 sllx n, 3, n 66 sub %g0, cnt, tcnt 67 68 sub up, 8, u1_off 69 add rp, (5 * 8), r1_off 70 71 ldx [n + u1_off], u1 C WAS: up - 8 72 add u1_off, (3 * 8), u1_off 73 74 sub r1_off, 8, r0_off 75 sub u1_off, 8, u0_off 76 77 subcc n, (3 * 8), n 78 srlx u1, tcnt, retval 79 80 bl,pn %xcc, L(end12) 81 sllx u1, cnt, %l3 82 83 ldx [n + u0_off], u0 C WAS: up - 16 84 subcc n, (2 * 8), n 85 86 ldx [n + u1_off], u1 C WAS: up - 24 87 88 bl,pn %xcc, L(end34) 89 srlx u0, tcnt, %l4 90 91 b,a L(top) 92 ALIGN(16) 93L(top): 94 sllx u0, cnt, %l2 95 or %l4, %l3, r0 96 97 ldx [n + u0_off], u0 C WAS: up - 16 98 srlx u1, tcnt, %l5 99 100 stx r0, [n + r0_off] C WAS: rp - 8 101 subcc n, (2 * 8), n 102 103 sllx u1, cnt, %l3 104 or %l2, %l5, r1 105 106 ldx [n + u1_off], u1 C WAS: up - 24 107 srlx u0, tcnt, %l4 108 109 bge,pt %xcc, L(top) 110 stx r1, [n + r1_off] C WAS: rp - 16 111 112L(end34): 113 sllx u0, cnt, %l2 114 or %l4, %l3, r0 115 116 srlx u1, tcnt, %l5 117 stx r0, [n + r0_off] C WAS: rp - 8 118 119 or %l2, %l5, r1 120 sub n, (2 * 8), %o5 121 122 sllx u1, cnt, %l3 123 stx r1, [%o5 + r1_off] C WAS: rp - 16 124 125L(end12): 126 andcc n, 8, %g0 127 bz,pn %xcc, L(done) 128 nop 129 130 ldx [n + u0_off], u1 131 srlx u1, tcnt, %l4 132 or %l4, %l3, r0 133 stx r0, [r0_off - 24] 134 sllx u1, cnt, %l3 135L(done): 136 stx %l3, [r0_off - 32] 137 138 ret 139 restore retval, 0, %o0 140EPILOGUE() 141