248 lines
4.7 KiB
ArmAsm
248 lines
4.7 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of GNU CC.
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*/
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.text
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.align 4
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.globl __udivdi3
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__udivdi3:
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save %sp,-104,%sp
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mov %i3,%o3
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cmp %i2,0
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bne .LL40
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mov %i1,%i3
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cmp %o3,%i0
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bleu .LL41
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mov %i3,%o1
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! Inlined udiv_qrnnd
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mov 32,%g1
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subcc %i0,%o3,%g0
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1: bcs 5f
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addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
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sub %i0,%o3,%i0 ! this kills msb of n
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addx %i0,%i0,%i0 ! so this cannot give carry
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subcc %g1,1,%g1
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2: bne 1b
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subcc %i0,%o3,%g0
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bcs 3f
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addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
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b 3f
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sub %i0,%o3,%i0 ! this kills msb of n
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4: sub %i0,%o3,%i0
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5: addxcc %i0,%i0,%i0
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bcc 2b
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subcc %g1,1,%g1
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! Got carry from n. Subtract next step to cancel this carry.
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bne 4b
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addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
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sub %i0,%o3,%i0
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3: xnor %o1,0,%o1
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! End of inline udiv_qrnnd
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b .LL45
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mov 0,%o2
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.LL41:
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cmp %o3,0
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bne .LL77
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mov %i0,%o2
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mov 1,%o0
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mov 0,%o1
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wr %g0, 0, %y
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udiv %o0, %o1, %o0
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mov %o0,%o3
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mov %i0,%o2
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.LL77:
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mov 0,%o4
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! Inlined udiv_qrnnd
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mov 32,%g1
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subcc %o4,%o3,%g0
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1: bcs 5f
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addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
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sub %o4,%o3,%o4 ! this kills msb of n
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addx %o4,%o4,%o4 ! so this cannot give carry
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subcc %g1,1,%g1
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2: bne 1b
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subcc %o4,%o3,%g0
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bcs 3f
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addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
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b 3f
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sub %o4,%o3,%o4 ! this kills msb of n
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4: sub %o4,%o3,%o4
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5: addxcc %o4,%o4,%o4
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bcc 2b
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subcc %g1,1,%g1
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! Got carry from n. Subtract next step to cancel this carry.
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bne 4b
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addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
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sub %o4,%o3,%o4
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3: xnor %o2,0,%o2
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! End of inline udiv_qrnnd
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mov %o4,%i0
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mov %i3,%o1
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! Inlined udiv_qrnnd
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mov 32,%g1
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subcc %i0,%o3,%g0
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1: bcs 5f
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addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
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sub %i0,%o3,%i0 ! this kills msb of n
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addx %i0,%i0,%i0 ! so this cannot give carry
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subcc %g1,1,%g1
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2: bne 1b
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subcc %i0,%o3,%g0
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bcs 3f
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addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
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b 3f
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sub %i0,%o3,%i0 ! this kills msb of n
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4: sub %i0,%o3,%i0
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5: addxcc %i0,%i0,%i0
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bcc 2b
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subcc %g1,1,%g1
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! Got carry from n. Subtract next step to cancel this carry.
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bne 4b
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addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
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sub %i0,%o3,%i0
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3: xnor %o1,0,%o1
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! End of inline udiv_qrnnd
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b .LL78
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mov %o1,%l1
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.LL40:
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cmp %i2,%i0
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bleu .LL46
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sethi %hi(65535),%o0
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b .LL73
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mov 0,%o1
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.LL46:
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or %o0,%lo(65535),%o0
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cmp %i2,%o0
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bgu .LL53
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mov %i2,%o1
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cmp %i2,256
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addx %g0,-1,%o0
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b .LL59
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and %o0,8,%o2
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.LL53:
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sethi %hi(16777215),%o0
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or %o0,%lo(16777215),%o0
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cmp %o1,%o0
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bgu .LL59
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mov 24,%o2
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mov 16,%o2
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.LL59:
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srl %o1,%o2,%o1
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sethi %hi(__clz_tab),%o0
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or %o0,%lo(__clz_tab),%o0
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ldub [%o1+%o0],%o0
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add %o0,%o2,%o0
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mov 32,%o1
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subcc %o1,%o0,%o2
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bne,a .LL67
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mov 32,%o0
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cmp %i0,%i2
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bgu .LL69
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cmp %i3,%o3
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blu .LL73
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mov 0,%o1
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.LL69:
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b .LL73
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mov 1,%o1
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.LL67:
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sub %o0,%o2,%o0
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sll %i2,%o2,%i2
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srl %o3,%o0,%o1
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or %i2,%o1,%i2
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sll %o3,%o2,%o3
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srl %i0,%o0,%o1
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sll %i0,%o2,%i0
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srl %i3,%o0,%o0
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or %i0,%o0,%i0
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sll %i3,%o2,%i3
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mov %i0,%o5
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mov %o1,%o4
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! Inlined udiv_qrnnd
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mov 32,%g1
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subcc %o4,%i2,%g0
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1: bcs 5f
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addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
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sub %o4,%i2,%o4 ! this kills msb of n
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addx %o4,%o4,%o4 ! so this cannot give carry
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subcc %g1,1,%g1
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2: bne 1b
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subcc %o4,%i2,%g0
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bcs 3f
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addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
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b 3f
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sub %o4,%i2,%o4 ! this kills msb of n
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4: sub %o4,%i2,%o4
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5: addxcc %o4,%o4,%o4
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bcc 2b
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subcc %g1,1,%g1
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! Got carry from n. Subtract next step to cancel this carry.
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bne 4b
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addcc %o5,%o5,%o5 ! shift n1n0 and a 0-bit in lsb
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sub %o4,%i2,%o4
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3: xnor %o5,0,%o5
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! End of inline udiv_qrnnd
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mov %o4,%i0
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mov %o5,%o1
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! Inlined umul_ppmm
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wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
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sra %o3,31,%g2 ! Do not move this insn
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and %o1,%g2,%g2 ! Do not move this insn
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andcc %g0,0,%g1 ! Do not move this insn
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,%o3,%g1
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mulscc %g1,0,%g1
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add %g1,%g2,%o0
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rd %y,%o2
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cmp %o0,%i0
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bgu,a .LL73
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add %o1,-1,%o1
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bne,a .LL45
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mov 0,%o2
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cmp %o2,%i3
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bleu .LL45
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mov 0,%o2
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add %o1,-1,%o1
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.LL73:
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mov 0,%o2
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.LL45:
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mov %o1,%l1
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.LL78:
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mov %o2,%l0
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mov %l0,%i0
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mov %l1,%i1
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ret
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restore
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