diff options
Diffstat (limited to 'mpn/sparc32/udiv_fp.asm')
| -rw-r--r-- | mpn/sparc32/udiv_fp.asm | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/mpn/sparc32/udiv_fp.asm b/mpn/sparc32/udiv_fp.asm new file mode 100644 index 000000000..682a4be51 --- /dev/null +++ b/mpn/sparc32/udiv_fp.asm @@ -0,0 +1,142 @@ +! SPARC v7 __udiv_qrnnd division support, used from longlong.h. +! This is for v7 CPUs with a floating-point unit. + +! Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc. + +! This file is part of the GNU MP Library. + +! The GNU MP Library is free software; you can redistribute it and/or modify +! it under the terms of the GNU Library General Public License as published by +! the Free Software Foundation; either version 2 of the License, or (at your +! option) any later version. + +! The GNU MP Library 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 Library General Public License +! along with the GNU MP Library; see the file COPYING.LIB. If not, write to +! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +! MA 02111-1307, USA. + + +! INPUT PARAMETERS +! rem_ptr i0 +! n1 i1 +! n0 i2 +! d i3 + +include(`../config.m4') + +ASM_START() + RODATA + ALIGN(8) +L(C0): .double 0r4294967296 +L(C1): .double 0r2147483648 + +PROLOGUE(__udiv_qrnnd) + save %sp,-104,%sp + st %i1,[%fp-8] + ld [%fp-8],%f10 + sethi %hi(L(C0)),%o7 + fitod %f10,%f4 + ldd [%o7+%lo(L(C0))],%f8 + cmp %i1,0 + bge L(248) + mov %i0,%i5 + faddd %f4,%f8,%f4 +L(248): + st %i2,[%fp-8] + ld [%fp-8],%f10 + fmuld %f4,%f8,%f6 + cmp %i2,0 + bge L(249) + fitod %f10,%f2 + faddd %f2,%f8,%f2 +L(249): + st %i3,[%fp-8] + faddd %f6,%f2,%f2 + ld [%fp-8],%f10 + cmp %i3,0 + bge L(250) + fitod %f10,%f4 + faddd %f4,%f8,%f4 +L(250): + fdivd %f2,%f4,%f2 + sethi %hi(L(C1)),%o7 + ldd [%o7+%lo(L(C1))],%f4 + fcmped %f2,%f4 + nop + fbge,a L(251) + fsubd %f2,%f4,%f2 + fdtoi %f2,%f2 + st %f2,[%fp-8] + b L(252) + ld [%fp-8],%i4 +L(251): + fdtoi %f2,%f2 + st %f2,[%fp-8] + ld [%fp-8],%i4 + sethi %hi(-2147483648),%g2 + xor %i4,%g2,%i4 +L(252): + 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(253) + cmp %o7,%i3 + + add %i4,-1,%i0 + add %o7,%i3,%o7 + st %o7,[%i5] + ret + restore +L(253): + blu L(246) + mov %i4,%i0 + add %i4,1,%i0 + sub %o7,%i3,%o7 +L(246): + st %o7,[%i5] + ret + restore +EPILOGUE(__udiv_qrnnd) |