1 ! SPARC v7 __udiv_qrnnd division support, used from longlong.h.
2 ! This is for v7 CPUs without a floating-point unit.
4 ! Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
6 ! This file is part of the GNU MP Library.
8 ! The GNU MP Library is free software; you can redistribute it and/or modify
9 ! it under the terms of the GNU Library General Public License as published by
10 ! the Free Software Foundation; either version 2 of the License, or (at your
11 ! option) any later version.
13 ! The GNU MP Library is distributed in the hope that it will be useful, but
14 ! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 ! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
16 ! License for more details.
18 ! You should have received a copy of the GNU Library General Public License
19 ! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20 ! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
34 .global C_SYMBOL_NAME(__udiv_qrnnd)
35 C_SYMBOL_NAME(__udiv_qrnnd):
92 and %o2,1,%o5 ! %o5 = n0 & 1
96 or %g2,%o2,%o2 ! %o2 = lo(n1n0 >> 1)
97 srl %o1,1,%o1 ! %o1 = hi(n1n0 >> 1)
100 srl %o3,1,%g3 ! %g3 = floor(d / 2)
101 add %g3,%g2,%g3 ! %g3 = ceil(d / 2)
108 LLp1: addx %o1,%o1,%o1
112 LLp2: addx %o1,%o1,%o1
116 LLp3: addx %o1,%o1,%o1
120 LLp4: addx %o1,%o1,%o1
126 LLp5: add %o1,%o1,%o1 ! << 1
136 LLn1: addx %o4,%o4,%o4
140 LLn2: addx %o4,%o4,%o4
144 LLn3: addx %o4,%o4,%o4
148 LLn4: addx %o4,%o4,%o4
154 LLn5: add %o4,%o4,%o4 ! << 1
162 Oddp: xnor %g0,%o2,%o2
163 ! q' in %o2. r' in %o1
168 LLp6: subcc %o1,%o3,%g0
176 Oddn: xnor %g0,%o2,%o2
177 ! q' in %o2. r' in %o4
182 LLn6: subcc %o4,%o3,%g0