Subversion Repositories openrisc_2011-10-31

/* Copyright (C) 2009 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