159 lines
3.1 KiB
NASM
159 lines
3.1 KiB
NASM
dnl SPARC v7 __udiv_qrnnd division support, used from longlong.h.
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dnl This is for v7 CPUs with a floating-point unit.
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dnl Copyright 1993, 1994, 1996, 2000 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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C INPUT PARAMETERS
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C rem_ptr i0
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C n1 i1
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C n0 i2
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C d i3
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ASM_START()
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ifdef(`PIC',
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` TEXT
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L(getpc):
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retl
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nop')
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TEXT
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ALIGN(8)
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L(C0): .double 0r4294967296
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L(C1): .double 0r2147483648
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PROLOGUE(mpn_udiv_qrnnd)
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save %sp,-104,%sp
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st %i1,[%fp-8]
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ld [%fp-8],%f10
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ifdef(`PIC',
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`L(pc): call L(getpc) C put address of this insn in %o7
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ldd [%o7+L(C0)-L(pc)],%f8',
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` sethi %hi(L(C0)),%o7
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ldd [%o7+%lo(L(C0))],%f8')
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fitod %f10,%f4
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cmp %i1,0
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bge L(248)
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mov %i0,%i5
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faddd %f4,%f8,%f4
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L(248):
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st %i2,[%fp-8]
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ld [%fp-8],%f10
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fmuld %f4,%f8,%f6
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cmp %i2,0
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bge L(249)
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fitod %f10,%f2
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faddd %f2,%f8,%f2
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L(249):
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st %i3,[%fp-8]
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faddd %f6,%f2,%f2
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ld [%fp-8],%f10
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cmp %i3,0
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bge L(250)
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fitod %f10,%f4
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faddd %f4,%f8,%f4
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L(250):
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fdivd %f2,%f4,%f2
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ifdef(`PIC',
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` ldd [%o7+L(C1)-L(pc)],%f4',
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` sethi %hi(L(C1)),%o7
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ldd [%o7+%lo(L(C1))],%f4')
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fcmped %f2,%f4
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nop
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fbge,a L(251)
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fsubd %f2,%f4,%f2
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fdtoi %f2,%f2
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st %f2,[%fp-8]
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b L(252)
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ld [%fp-8],%i4
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L(251):
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fdtoi %f2,%f2
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st %f2,[%fp-8]
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ld [%fp-8],%i4
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sethi %hi(-2147483648),%g2
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xor %i4,%g2,%i4
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L(252):
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wr %g0,%i4,%y
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sra %i3,31,%g2
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and %i4,%g2,%g2
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andcc %g0,0,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,%i3,%g1
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mulscc %g1,0,%g1
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add %g1,%g2,%i0
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rd %y,%g3
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subcc %i2,%g3,%o7
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subxcc %i1,%i0,%g0
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be L(253)
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cmp %o7,%i3
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add %i4,-1,%i0
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add %o7,%i3,%o7
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st %o7,[%i5]
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ret
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restore
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L(253):
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blu L(246)
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mov %i4,%i0
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add %i4,1,%i0
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sub %o7,%i3,%o7
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L(246):
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st %o7,[%i5]
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ret
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restore
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EPILOGUE(mpn_udiv_qrnnd)
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