github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/sparc32/mul_1.asm (about) 1 dnl SPARC mpn_mul_1 -- Multiply a limb vector with a limb and store 2 dnl the result in a second limb vector. 3 4 dnl Copyright 1992-1994, 2000 Free Software Foundation, Inc. 5 6 dnl This file is part of the GNU MP Library. 7 dnl 8 dnl The GNU MP Library is free software; you can redistribute it and/or modify 9 dnl it under the terms of either: 10 dnl 11 dnl * the GNU Lesser General Public License as published by the Free 12 dnl Software Foundation; either version 3 of the License, or (at your 13 dnl option) any later version. 14 dnl 15 dnl or 16 dnl 17 dnl * the GNU General Public License as published by the Free Software 18 dnl Foundation; either version 2 of the License, or (at your option) any 19 dnl later version. 20 dnl 21 dnl or both in parallel, as here. 22 dnl 23 dnl The GNU MP Library is distributed in the hope that it will be useful, but 24 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 25 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 26 dnl for more details. 27 dnl 28 dnl You should have received copies of the GNU General Public License and the 29 dnl GNU Lesser General Public License along with the GNU MP Library. If not, 30 dnl see https://www.gnu.org/licenses/. 31 32 33 include(`../config.m4') 34 35 C INPUT PARAMETERS 36 C res_ptr o0 37 C s1_ptr o1 38 C size o2 39 C s2_limb o3 40 41 ASM_START() 42 PROLOGUE(mpn_mul_1) 43 C Make S1_PTR and RES_PTR point at the end of their blocks 44 C and put (- 4 x SIZE) in index/loop counter. 45 sll %o2,2,%o2 46 add %o0,%o2,%o4 C RES_PTR in o4 since o0 is retval 47 add %o1,%o2,%o1 48 sub %g0,%o2,%o2 49 50 cmp %o3,0xfff 51 bgu L(large) 52 nop 53 54 ld [%o1+%o2],%o5 55 mov 0,%o0 56 b L(0) 57 add %o4,-4,%o4 58 L(loop0): 59 st %g1,[%o4+%o2] 60 L(0): wr %g0,%o3,%y 61 sra %o5,31,%g2 62 and %o3,%g2,%g2 63 andcc %g1,0,%g1 64 mulscc %g1,%o5,%g1 65 mulscc %g1,%o5,%g1 66 mulscc %g1,%o5,%g1 67 mulscc %g1,%o5,%g1 68 mulscc %g1,%o5,%g1 69 mulscc %g1,%o5,%g1 70 mulscc %g1,%o5,%g1 71 mulscc %g1,%o5,%g1 72 mulscc %g1,%o5,%g1 73 mulscc %g1,%o5,%g1 74 mulscc %g1,%o5,%g1 75 mulscc %g1,%o5,%g1 76 mulscc %g1,0,%g1 77 sra %g1,20,%g4 78 sll %g1,12,%g1 79 rd %y,%g3 80 srl %g3,20,%g3 81 or %g1,%g3,%g1 82 83 addcc %g1,%o0,%g1 84 addx %g2,%g4,%o0 C add sign-compensation and cy to hi limb 85 addcc %o2,4,%o2 C loop counter 86 bne,a L(loop0) 87 ld [%o1+%o2],%o5 88 89 retl 90 st %g1,[%o4+%o2] 91 92 93 L(large): 94 ld [%o1+%o2],%o5 95 mov 0,%o0 96 sra %o3,31,%g4 C g4 = mask of ones iff S2_LIMB < 0 97 b L(1) 98 add %o4,-4,%o4 99 L(loop): 100 st %g3,[%o4+%o2] 101 L(1): wr %g0,%o5,%y 102 and %o5,%g4,%g2 C g2 = S1_LIMB iff S2_LIMB < 0, else 0 103 andcc %g0,%g0,%g1 104 mulscc %g1,%o3,%g1 105 mulscc %g1,%o3,%g1 106 mulscc %g1,%o3,%g1 107 mulscc %g1,%o3,%g1 108 mulscc %g1,%o3,%g1 109 mulscc %g1,%o3,%g1 110 mulscc %g1,%o3,%g1 111 mulscc %g1,%o3,%g1 112 mulscc %g1,%o3,%g1 113 mulscc %g1,%o3,%g1 114 mulscc %g1,%o3,%g1 115 mulscc %g1,%o3,%g1 116 mulscc %g1,%o3,%g1 117 mulscc %g1,%o3,%g1 118 mulscc %g1,%o3,%g1 119 mulscc %g1,%o3,%g1 120 mulscc %g1,%o3,%g1 121 mulscc %g1,%o3,%g1 122 mulscc %g1,%o3,%g1 123 mulscc %g1,%o3,%g1 124 mulscc %g1,%o3,%g1 125 mulscc %g1,%o3,%g1 126 mulscc %g1,%o3,%g1 127 mulscc %g1,%o3,%g1 128 mulscc %g1,%o3,%g1 129 mulscc %g1,%o3,%g1 130 mulscc %g1,%o3,%g1 131 mulscc %g1,%o3,%g1 132 mulscc %g1,%o3,%g1 133 mulscc %g1,%o3,%g1 134 mulscc %g1,%o3,%g1 135 mulscc %g1,%o3,%g1 136 mulscc %g1,%g0,%g1 137 rd %y,%g3 138 addcc %g3,%o0,%g3 139 addx %g2,%g1,%o0 C add sign-compensation and cy to hi limb 140 addcc %o2,4,%o2 C loop counter 141 bne,a L(loop) 142 ld [%o1+%o2],%o5 143 144 retl 145 st %g3,[%o4+%o2] 146 EPILOGUE(mpn_mul_1)