/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. This file is part of GNU CC. GNU CC 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, or (at your option) any later version. GNU CC 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU CC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ .data .align 8 .globl __clz_tab __clz_tab: .byte 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5 .byte 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6 .byte 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 .byte 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 .size __clz_tab,256 .global .udiv .text .align 4 .globl __divdi3 __divdi3: save %sp,-104,%sp cmp %i0,0 bge .LL40 mov 0,%l4 mov -1,%l4 sub %g0,%i1,%o0 mov %o0,%o5 subcc %g0,%o0,%g0 sub %g0,%i0,%o0 subx %o0,0,%o4 mov %o4,%i0 mov %o5,%i1 .LL40: cmp %i2,0 bge .LL84 mov %i3,%o4 xnor %g0,%l4,%l4 sub %g0,%i3,%o0 mov %o0,%o3 subcc %g0,%o0,%g0 sub %g0,%i2,%o0 subx %o0,0,%o2 mov %o2,%i2 mov %o3,%i3 mov %i3,%o4 .LL84: cmp %i2,0 bne .LL45 mov %i1,%i3 cmp %o4,%i0 bleu .LL46 mov %i3,%o1 mov 32,%g1 subcc %i0,%o4,%g0 1: bcs 5f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb sub %i0,%o4,%i0 ! this kills msb of n addx %i0,%i0,%i0 ! so this cannot give carry subcc %g1,1,%g1 2: bne 1b subcc %i0,%o4,%g0 bcs 3f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb b 3f sub %i0,%o4,%i0 ! this kills msb of n 4: sub %i0,%o4,%i0 5: addxcc %i0,%i0,%i0 bcc 2b subcc %g1,1,%g1 ! Got carry from n. Subtract next step to cancel this carry. bne 4b addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb sub %i0,%o4,%i0 3: xnor %o1,0,%o1 b .LL50 mov 0,%o2 .LL46: cmp %o4,0 bne .LL85 mov %i0,%o2 mov 1,%o0 call .udiv,0 mov 0,%o1 mov %o0,%o4 mov %i0,%o2 .LL85: mov 0,%g3 mov 32,%g1 subcc %g3,%o4,%g0 1: bcs 5f addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb sub %g3,%o4,%g3 ! this kills msb of n addx %g3,%g3,%g3 ! so this cannot give carry subcc %g1,1,%g1 2: bne 1b subcc %g3,%o4,%g0 bcs 3f addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb b 3f sub %g3,%o4,%g3 ! this kills msb of n 4: sub %g3,%o4,%g3 5: addxcc %g3,%g3,%g3 bcc 2b subcc %g1,1,%g1 ! Got carry from n. Subtract next step to cancel this carry. bne 4b addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb sub %g3,%o4,%g3 3: xnor %o2,0,%o2 mov %g3,%i0 mov %i3,%o1 mov 32,%g1 subcc %i0,%o4,%g0 1: bcs 5f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb sub %i0,%o4,%i0 ! this kills msb of n addx %i0,%i0,%i0 ! so this cannot give carry subcc %g1,1,%g1 2: bne 1b subcc %i0,%o4,%g0 bcs 3f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb b 3f sub %i0,%o4,%i0 ! this kills msb of n 4: sub %i0,%o4,%i0 5: addxcc %i0,%i0,%i0 bcc 2b subcc %g1,1,%g1 ! Got carry from n. Subtract next step to cancel this carry. bne 4b addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb sub %i0,%o4,%i0 3: xnor %o1,0,%o1 b .LL86 mov %o1,%l1 .LL45: cmp %i2,%i0 bleu .LL51 sethi %hi(65535),%o0 b .LL78 mov 0,%o1 .LL51: or %o0,%lo(65535),%o0 cmp %i2,%o0 bgu .LL58 mov %i2,%o1 cmp %i2,256 addx %g0,-1,%o0 b .LL64 and %o0,8,%o2 .LL58: sethi %hi(16777215),%o0 or %o0,%lo(16777215),%o0 cmp %i2,%o0 bgu .LL64 mov 24,%o2 mov 16,%o2 .LL64: srl %o1,%o2,%o0 sethi %hi(__clz_tab),%o1 or %o1,%lo(__clz_tab),%o1 ldub [%o0+%o1],%o0 add %o0,%o2,%o0 mov 32,%o1 subcc %o1,%o0,%o3 bne,a .LL72 sub %o1,%o3,%o1 cmp %i0,%i2 bgu .LL74 cmp %i3,%o4 blu .LL78 mov 0,%o1 .LL74: b .LL78 mov 1,%o1 .LL72: sll %i2,%o3,%o2 srl %o4,%o1,%o0 or %o2,%o0,%i2 sll %o4,%o3,%o4 srl %i0,%o1,%o2 sll %i0,%o3,%o0 srl %i3,%o1,%o1 or %o0,%o1,%i0 sll %i3,%o3,%i3 mov %i0,%o1 mov 32,%g1 subcc %o2,%i2,%g0 1: bcs 5f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb sub %o2,%i2,%o2 ! this kills msb of n addx %o2,%o2,%o2 ! so this cannot give carry subcc %g1,1,%g1 2: bne 1b subcc %o2,%i2,%g0 bcs 3f addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb b 3f sub %o2,%i2,%o2 ! this kills msb of n 4: sub %o2,%i2,%o2 5: addxcc %o2,%o2,%o2 bcc 2b subcc %g1,1,%g1 ! Got carry from n. Subtract next step to cancel this carry. bne 4b addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb sub %o2,%i2,%o2 3: xnor %o1,0,%o1 mov %o2,%i0 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr sra %o4,31,%g2 ! Do not move this insn and %o1,%g2,%g2 ! Do not move this insn andcc %g0,0,%g1 ! Do not move this insn mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,%o4,%g1 mulscc %g1,0,%g1 add %g1,%g2,%o0 rd %y,%o2 cmp %o0,%i0 bgu,a .LL78 add %o1,-1,%o1 bne,a .LL50 mov 0,%o2 cmp %o2,%i3 bleu .LL50 mov 0,%o2 add %o1,-1,%o1 .LL78: mov 0,%o2 .LL50: mov %o1,%l1 .LL86: mov %o2,%l0 mov %l0,%i0 mov %l1,%i1 cmp %l4,0 be .LL81 sub %g0,%i1,%o0 mov %o0,%l3 subcc %g0,%o0,%g0 sub %g0,%i0,%o0 subx %o0,0,%l2 mov %l2,%i0 mov %l3,%i1 .LL81: ret restore