93 lines
2.2 KiB
ArmAsm
93 lines
2.2 KiB
ArmAsm
/* Copyright (C) 2009-2015 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
|