1 dnl SPARC T3/T4/T5 mpn_bdiv_dbm1c. 2 3 dnl Contributed to the GNU project by Torbjrn Granlund. 4 5 dnl Copyright 2013 Free Software Foundation, Inc. 6 7 dnl This file is part of the GNU MP Library. 8 dnl 9 dnl The GNU MP Library is free software; you can redistribute it and/or modify 10 dnl it under the terms of either: 11 dnl 12 dnl * the GNU Lesser General Public License as published by the Free 13 dnl Software Foundation; either version 3 of the License, or (at your 14 dnl option) any later version. 15 dnl 16 dnl or 17 dnl 18 dnl * the GNU General Public License as published by the Free Software 19 dnl Foundation; either version 2 of the License, or (at your option) any 20 dnl later version. 21 dnl 22 dnl or both in parallel, as here. 23 dnl 24 dnl The GNU MP Library is distributed in the hope that it will be useful, but 25 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27 dnl for more details. 28 dnl 29 dnl You should have received copies of the GNU General Public License and the 30 dnl GNU Lesser General Public License along with the GNU MP Library. If not, 31 dnl see https://www.gnu.org/licenses/. 32 33 include(`../config.m4') 34 35 C cycles/limb 36 C UltraSPARC T3: 25 37 C UltraSPARC T4/T5: 4 38 39 C INPUT PARAMETERS 40 define(`qp', `%i0') 41 define(`ap', `%i1') 42 define(`n', `%i2') 43 define(`bd', `%i3') 44 define(`h', `%i4') 45 46 define(`plo0',`%g4') define(`plo1',`%g5') 47 define(`phi0',`%l0') define(`phi1',`%l1') 48 define(`a0', `%g1') define(`a1', `%g3') 49 50 ASM_START() 51 REGISTER(%g2,#scratch) 52 REGISTER(%g3,#scratch) 53 PROLOGUE(mpn_bdiv_dbm1c) 54 save %sp, -176, %sp 55 56 and n, 3, %g5 57 ldx [ap + 0], %g2 58 add n, -5, n 59 brz %g5, L(b0) 60 cmp %g5, 2 61 bcs %xcc, L(b1) 62 nop 63 be %xcc, L(b2) 64 nop 65 66 L(b3): ldx [ap + 8], a0 67 mulx bd, %g2, plo1 68 umulxhi(bd, %g2, phi1) 69 ldx [ap + 16], a1 70 add qp, -24, qp 71 b L(lo3) 72 add ap, -8, ap 73 74 L(b2): ldx [ap + 8], a1 75 mulx bd, %g2, plo0 76 umulxhi(bd, %g2, phi0) 77 brlz,pt n, L(wd2) 78 nop 79 L(gt2): ldx [ap + 16], a0 80 add ap, 16, ap 81 b L(lo2) 82 add n, -1, n 83 84 L(b1): mulx bd, %g2, plo1 85 umulxhi(bd, %g2, phi1) 86 brlz,pn n, L(wd1) 87 add qp, -8, qp 88 L(gt1): ldx [ap + 8], a0 89 ldx [ap + 16], a1 90 b L(lo1) 91 add ap, 8, ap 92 93 L(b0): ldx [ap + 8], a1 94 mulx bd, %g2, plo0 95 umulxhi(bd, %g2, phi0) 96 ldx [ap + 16], a0 97 b L(lo0) 98 add qp, -16, qp 99 100 L(top): ldx [ap + 0], a0 101 sub h, phi1, h 102 L(lo2): mulx bd, a1, plo1 103 umulxhi(bd, a1, phi1) 104 subcc h, plo0, h 105 addxc( phi0, %g0, phi0) 106 stx h, [qp + 0] 107 ldx [ap + 8], a1 108 sub h, phi0, h 109 L(lo1): mulx bd, a0, plo0 110 umulxhi(bd, a0, phi0) 111 subcc h, plo1, h 112 addxc( phi1, %g0, phi1) 113 stx h, [qp + 8] 114 ldx [ap + 16], a0 115 sub h, phi1, h 116 L(lo0): mulx bd, a1, plo1 117 umulxhi(bd, a1, phi1) 118 subcc h, plo0, h 119 addxc( phi0, %g0, phi0) 120 stx h, [qp + 16] 121 ldx [ap + 24], a1 122 sub h, phi0, h 123 L(lo3): mulx bd, a0, plo0 124 umulxhi(bd, a0, phi0) 125 subcc h, plo1, h 126 addxc( phi1, %g0, phi1) 127 stx h, [qp + 24] 128 add ap, 32, ap 129 add qp, 32, qp 130 brgz,pt n, L(top) 131 add n, -4, n 132 133 L(end): sub h, phi1, h 134 L(wd2): mulx bd, a1, plo1 135 umulxhi(bd, a1, phi1) 136 subcc h, plo0, h 137 addxc( phi0, %g0, phi0) 138 stx h, [qp + 0] 139 sub h, phi0, h 140 L(wd1): subcc h, plo1, h 141 addxc( phi1, %g0, phi1) 142 stx h, [qp + 8] 143 sub h, phi1, %i0 144 145 ret 146 restore 147 EPILOGUE() 148
Indexes created Sat Feb 28 05:31:39 UTC 2026