| /* 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. */ |
| |
| #include <asm/export.h> |
| .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 |
| mov 0,%o1 |
| wr %g0, 0, %y |
| udiv %o0, %o1, %o0 |
| 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 |
| EXPORT_SYMBOL(__divdi3) |
