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/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of GCC.
Contributed by Maciej W. Rozycki <macro@linux-mips.org>.
This file 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 3, or (at your option) any
later version.
This file 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef L_udivsi3
.text
.globl __udivsi3
.type __udivsi3, @function
__udivsi3:
.word 0
movl 8(%ap), %r1
blss 0f /* Check bit #31 of divisor. */
movl 4(%ap), %r2
blss 1f /* Check bit #31 of dividend. */
/* Both zero, do a standard division. */
divl3 %r1, %r2, %r0
ret
/* MSB of divisor set, only 1 or 0 may result. */
0:
decl %r1
clrl %r0
cmpl %r1, 4(%ap)
adwc $0, %r0
ret
/* MSB of dividend set, do an extended division. */
1:
clrl %r3
ediv %r1, %r2, %r0, %r3
ret
.size __udivsi3, . - __udivsi3
.previous
#endif
#ifdef L_umodsi3
.text
.globl __umodsi3
.type __umodsi3, @function
__umodsi3:
.word 0
movl 8(%ap), %r1
blss 0f /* Check bit #31 of divisor. */
movl 4(%ap), %r2
blss 1f /* Check bit #31 of dividend. */
/* Both zero, do a standard division. */
divl3 %r1, %r2, %r0
mull2 %r0, %r1
subl3 %r1, %r2, %r0
ret
/* MSB of divisor set, subtract the divisor at most once. */
0:
movl 4(%ap), %r2
clrl %r0
cmpl %r2, %r1
sbwc $0, %r0
bicl2 %r0, %r1
subl3 %r1, %r2, %r0
ret
/* MSB of dividend set, do an extended division. */
1:
clrl %r3
ediv %r1, %r2, %r3, %r0
ret
.size __umodsi3, . - __umodsi3
.previous
#endif
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