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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | # Alpha 21064 __udiv_qrnnd # Copyright (C) 1992, 1994, 1995, 2000 Free Software Foundation, Inc. # This file is part of GCC. # The GNU MP Library is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or (at your # option) any later version. # In addition to the permissions in the GNU General Public License, the # Free Software Foundation gives you unlimited permission to link the # compiled version of this file with other programs, and to distribute # those programs without any restriction coming from the use of this # file. (The General Public License restrictions do apply in other # respects; for example, they cover modification of the file, and # distribution when not linked into another program.) # This file is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public # License for more details. # You should have received a copy of the GNU General Public License # along with GCC; see the file COPYING. If not, write to the # Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, # MA 02111-1307, USA. #include <asm/export.h> .set noreorder .set noat .text .globl __udiv_qrnnd .ent __udiv_qrnnd __udiv_qrnnd: .frame $30,0,$26,0 .prologue 0 #define cnt $2 #define tmp $3 #define rem_ptr $16 #define n1 $17 #define n0 $18 #define d $19 #define qb $20 #define AT $at ldiq cnt,16 blt d,$largedivisor $loop1: cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule d,n1,qb subq n1,d,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule d,n1,qb subq n1,d,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule d,n1,qb subq n1,d,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule d,n1,qb subq n1,d,tmp cmovne qb,tmp,n1 bis n0,qb,n0 subq cnt,1,cnt bgt cnt,$loop1 stq n1,0(rem_ptr) bis $31,n0,$0 ret $31,($26),1 $largedivisor: and n0,1,$4 srl n0,1,n0 sll n1,63,tmp or tmp,n0,n0 srl n1,1,n1 and d,1,$6 srl d,1,$5 addq $5,$6,$5 $loop2: cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule $5,n1,qb subq n1,$5,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule $5,n1,qb subq n1,$5,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule $5,n1,qb subq n1,$5,tmp cmovne qb,tmp,n1 bis n0,qb,n0 cmplt n0,0,tmp addq n1,n1,n1 bis n1,tmp,n1 addq n0,n0,n0 cmpule $5,n1,qb subq n1,$5,tmp cmovne qb,tmp,n1 bis n0,qb,n0 subq cnt,1,cnt bgt cnt,$loop2 addq n1,n1,n1 addq $4,n1,n1 bne $6,$Odd stq n1,0(rem_ptr) bis $31,n0,$0 ret $31,($26),1 $Odd: /* q' in n0. r' in n1 */ addq n1,n0,n1 cmpult n1,n0,tmp # tmp := carry from addq subq n1,d,AT addq n0,tmp,n0 cmovne tmp,AT,n1 cmpult n1,d,tmp addq n0,1,AT cmoveq tmp,AT,n0 subq n1,d,AT cmoveq tmp,AT,n1 stq n1,0(rem_ptr) bis $31,n0,$0 ret $31,($26),1 .end __udiv_qrnnd EXPORT_SYMBOL(__udiv_qrnnd) |