1dnl SPARC mpn_mul_1 -- Multiply a limb vector with a limb and store 2dnl the result in a second limb vector. 3 4dnl Copyright 1992, 1993, 1994, 2000 Free Software Foundation, Inc. 5 6dnl This file is part of the GNU MP Library. 7 8dnl The GNU MP Library is free software; you can redistribute it and/or modify 9dnl it under the terms of the GNU Lesser General Public License as published 10dnl by the Free Software Foundation; either version 3 of the License, or (at 11dnl your option) any later version. 12 13dnl The GNU MP Library is distributed in the hope that it will be useful, but 14dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16dnl License for more details. 17 18dnl You should have received a copy of the GNU Lesser General Public License 19dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. 20 21 22include(`../config.m4') 23 24C INPUT PARAMETERS 25C res_ptr o0 26C s1_ptr o1 27C size o2 28C s2_limb o3 29 30ASM_START() 31PROLOGUE(mpn_mul_1) 32 C Make S1_PTR and RES_PTR point at the end of their blocks 33 C and put (- 4 x SIZE) in index/loop counter. 34 sll %o2,2,%o2 35 add %o0,%o2,%o4 C RES_PTR in o4 since o0 is retval 36 add %o1,%o2,%o1 37 sub %g0,%o2,%o2 38 39 cmp %o3,0xfff 40 bgu L(large) 41 nop 42 43 ld [%o1+%o2],%o5 44 mov 0,%o0 45 b L(0) 46 add %o4,-4,%o4 47L(loop0): 48 st %g1,[%o4+%o2] 49L(0): wr %g0,%o3,%y 50 sra %o5,31,%g2 51 and %o3,%g2,%g2 52 andcc %g1,0,%g1 53 mulscc %g1,%o5,%g1 54 mulscc %g1,%o5,%g1 55 mulscc %g1,%o5,%g1 56 mulscc %g1,%o5,%g1 57 mulscc %g1,%o5,%g1 58 mulscc %g1,%o5,%g1 59 mulscc %g1,%o5,%g1 60 mulscc %g1,%o5,%g1 61 mulscc %g1,%o5,%g1 62 mulscc %g1,%o5,%g1 63 mulscc %g1,%o5,%g1 64 mulscc %g1,%o5,%g1 65 mulscc %g1,0,%g1 66 sra %g1,20,%g4 67 sll %g1,12,%g1 68 rd %y,%g3 69 srl %g3,20,%g3 70 or %g1,%g3,%g1 71 72 addcc %g1,%o0,%g1 73 addx %g2,%g4,%o0 C add sign-compensation and cy to hi limb 74 addcc %o2,4,%o2 C loop counter 75 bne,a L(loop0) 76 ld [%o1+%o2],%o5 77 78 retl 79 st %g1,[%o4+%o2] 80 81 82L(large): 83 ld [%o1+%o2],%o5 84 mov 0,%o0 85 sra %o3,31,%g4 C g4 = mask of ones iff S2_LIMB < 0 86 b L(1) 87 add %o4,-4,%o4 88L(loop): 89 st %g3,[%o4+%o2] 90L(1): wr %g0,%o5,%y 91 and %o5,%g4,%g2 C g2 = S1_LIMB iff S2_LIMB < 0, else 0 92 andcc %g0,%g0,%g1 93 mulscc %g1,%o3,%g1 94 mulscc %g1,%o3,%g1 95 mulscc %g1,%o3,%g1 96 mulscc %g1,%o3,%g1 97 mulscc %g1,%o3,%g1 98 mulscc %g1,%o3,%g1 99 mulscc %g1,%o3,%g1 100 mulscc %g1,%o3,%g1 101 mulscc %g1,%o3,%g1 102 mulscc %g1,%o3,%g1 103 mulscc %g1,%o3,%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,%g0,%g1 126 rd %y,%g3 127 addcc %g3,%o0,%g3 128 addx %g2,%g1,%o0 C add sign-compensation and cy to hi limb 129 addcc %o2,4,%o2 C loop counter 130 bne,a L(loop) 131 ld [%o1+%o2],%o5 132 133 retl 134 st %g3,[%o4+%o2] 135EPILOGUE(mpn_mul_1) 136