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dnl SPARC v7 __udiv_qrnnd division support, used from longlong.h.
dnl This is for v7 CPUs with a floating-point unit.
dnl Copyright 1993, 1994, 1996, 2000, 2021 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
include(`../config.m4')
C INPUT PARAMETERS
C rem_ptr i0
C n1 i1
C n0 i2
C d i3
ASM_START()
PROLOGUE(mpn_udiv_qrnnd)
save %sp,-104,%sp
sethi %hi(0x80000000),%g1
sethi %hi(0x41e00000),%i4
mov 0,%i5
std %i4,[%fp-8]
ldd [%fp-8],%f12 C 0r2147483648
faddd %f12,%f12,%f8 C 0r4294967296
mov %i0,%i5
sub %i1,%g1,%l0
sub %i2,%g1,%l1
std %l0,[%fp-8]
ldd [%fp-8],%f10
fitod %f10,%f4
faddd %f4,%f12,%f4
fitod %f11,%f2
faddd %f2,%f12,%f2
fmuld %f4,%f8,%f6
sub %i3,%g1,%l2
st %l2,[%fp-8]
faddd %f6,%f2,%f2
ld [%fp-8],%f10
fitod %f10,%f4
faddd %f4,%f12,%f4
fdivd %f2,%f4,%f2
fcmped %f2,%f12
nop
fbge,a L(1)
fsubd %f2,%f12,%f2
fdtoi %f2,%f2
st %f2,[%fp-8]
b L(2)
ld [%fp-8],%i4
L(1):
fdtoi %f2,%f2
st %f2,[%fp-8]
ld [%fp-8],%i4
add %i4,%g1,%i4
L(2):
wr %g0,%i4,%y
sra %i3,31,%g2
and %i4,%g2,%g2
andcc %g0,0,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,%i3,%g1
mulscc %g1,0,%g1
add %g1,%g2,%i0
rd %y,%g3
subcc %i2,%g3,%o7
subxcc %i1,%i0,%g0
be L(3)
cmp %o7,%i3
add %i4,-1,%i0
add %o7,%i3,%o7
st %o7,[%i5]
ret
restore
L(3):
blu L(4)
mov %i4,%i0
add %i4,1,%i0
sub %o7,%i3,%o7
L(4):
st %o7,[%i5]
ret
restore
EPILOGUE(mpn_udiv_qrnnd)
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