| /* Copyright (C) 2009-2021 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 |