1 dnl SPARC v9 mpn_lshiftc 2 3 dnl Copyright 1996, 2000-2003, 2010 Free Software Foundation, Inc. 4 5 dnl This file is part of the GNU MP Library. 6 dnl 7 dnl The GNU MP Library is free software; you can redistribute it and/or modify 8 dnl it under the terms of either: 9 dnl 10 dnl * the GNU Lesser General Public License as published by the Free 11 dnl Software Foundation; either version 3 of the License, or (at your 12 dnl option) any later version. 13 dnl 14 dnl or 15 dnl 16 dnl * the GNU General Public License as published by the Free Software 17 dnl Foundation; either version 2 of the License, or (at your option) any 18 dnl later version. 19 dnl 20 dnl or both in parallel, as here. 21 dnl 22 dnl The GNU MP Library is distributed in the hope that it will be useful, but 23 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 24 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 25 dnl for more details. 26 dnl 27 dnl You should have received copies of the GNU General Public License and the 28 dnl GNU Lesser General Public License along with the GNU MP Library. If not, 29 dnl see https://www.gnu.org/licenses/. 30 31 32 include(`../config.m4') 33 34 C cycles/limb 35 C UltraSPARC 1&2: 3 36 C UltraSPARC 3: 2.67 37 38 C INPUT PARAMETERS 39 define(`rp', `%i0') 40 define(`up', `%i1') 41 define(`n', `%i2') 42 define(`cnt',`%i3') 43 44 define(`u0', `%l0') 45 define(`u1', `%l2') 46 define(`u2', `%l4') 47 define(`u3', `%l6') 48 49 define(`tnc',`%i4') 50 51 define(`fanop',`fitod %f0,%f2') dnl A quasi nop running in the FA pipe 52 53 ASM_START() 54 REGISTER(%g2,#scratch) 55 REGISTER(%g3,#scratch) 56 PROLOGUE(mpn_lshiftc) 57 save %sp,-160,%sp 58 59 sllx n,3,%g1 60 sub %g0,cnt,tnc C negate shift count 61 add up,%g1,up C make %o1 point at end of src 62 add rp,%g1,rp C make %o0 point at end of res 63 ldx [up-8],u3 C load first limb 64 subcc n,5,n 65 srlx u3,tnc,%i5 C compute function result 66 bl,pn %xcc,.Lend1234 67 sllx u3,cnt,%g3 68 69 subcc n,4,n 70 ldx [up-16],u0 71 ldx [up-24],u1 72 add up,-32,up 73 ldx [up-0],u2 74 ldx [up-8],u3 75 srlx u0,tnc,%g2 76 bl,pn %xcc,.Lend5678 77 not %g3, %g3 78 79 b,a .Loop 80 ALIGN(16) 81 .Loop: 82 sllx u0,cnt,%g1 83 andn %g3,%g2,%g3 84 ldx [up-16],u0 85 fanop 86 C -- 87 srlx u1,tnc,%g2 88 subcc n,4,n 89 stx %g3,[rp-8] 90 not %g1, %g1 91 C -- 92 sllx u1,cnt,%g3 93 andn %g1,%g2,%g1 94 ldx [up-24],u1 95 fanop 96 C -- 97 srlx u2,tnc,%g2 98 stx %g1,[rp-16] 99 add up,-32,up 100 not %g3, %g3 101 C -- 102 sllx u2,cnt,%g1 103 andn %g3,%g2,%g3 104 ldx [up-0],u2 105 fanop 106 C -- 107 srlx u3,tnc,%g2 108 stx %g3,[rp-24] 109 add rp,-32,rp 110 not %g1, %g1 111 C -- 112 sllx u3,cnt,%g3 113 andn %g1,%g2,%g1 114 ldx [up-8],u3 115 fanop 116 C -- 117 srlx u0,tnc,%g2 118 stx %g1,[rp-0] 119 bge,pt %xcc,.Loop 120 not %g3, %g3 121 C -- 122 .Lend5678: 123 sllx u0,cnt,%g1 124 andn %g3,%g2,%g3 125 srlx u1,tnc,%g2 126 stx %g3,[rp-8] 127 not %g1, %g1 128 sllx u1,cnt,%g3 129 andn %g1,%g2,%g1 130 srlx u2,tnc,%g2 131 stx %g1,[rp-16] 132 not %g3, %g3 133 sllx u2,cnt,%g1 134 andn %g3,%g2,%g3 135 srlx u3,tnc,%g2 136 stx %g3,[rp-24] 137 add rp,-32,rp 138 not %g1, %g1 139 sllx u3,cnt,%g3 C carry... 140 andn %g1,%g2,%g1 141 stx %g1,[rp-0] 142 143 .Lend1234: 144 addcc n,4,n 145 bz,pn %xcc,.Lret 146 fanop 147 .Loop0: 148 add rp,-8,rp 149 subcc n,1,n 150 ldx [up-16],u3 151 add up,-8,up 152 srlx u3,tnc,%g2 153 not %g3, %g3 154 andn %g3,%g2,%g3 155 stx %g3,[rp] 156 sllx u3,cnt,%g3 157 bnz,pt %xcc,.Loop0 158 fanop 159 .Lret: 160 not %g3, %g3 161 stx %g3,[rp-8] 162 mov %i5,%i0 163 ret 164 restore 165 EPILOGUE() 166
Indexes created Sat Feb 28 05:31:39 UTC 2026