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1b35a57b1c
For the explicit calls to .udiv/.umul in assembler, I made a mechanical (read as: safe) transformation. I didn't attempt to make any simplifications. In particular, __ndelay and __udelay can be simplified significantly. Some of the %y reads are unnecessary and these routines have no need any longer for allocating a register window, they can be leaf functions. Signed-off-by: David S. Miller <davem@davemloft.net>
77 lines
1.9 KiB
ArmAsm
77 lines
1.9 KiB
ArmAsm
/* 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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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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.text
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.align 4
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.globl __muldi3
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__muldi3:
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save %sp, -104, %sp
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wr %g0, %i1, %y
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sra %i3, 0x1f, %g2
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and %i1, %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, %l2
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rd %y, %o1
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mov %o1, %l3
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mov %i1, %o0
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mov %i2, %o1
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umul %o0, %o1, %o0
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mov %o0, %l0
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mov %i0, %o0
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mov %i3, %o1
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umul %o0, %o1, %o0
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add %l0, %o0, %l0
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mov %l2, %i0
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add %l2, %l0, %i0
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ret
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restore %g0, %l3, %o1
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