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247 lines
4.7 KiB
247 lines
4.7 KiB
/* 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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