u-boot/lib_nios/mult.c
wdenk 4a5517094d * Patch by Scott McNutt, 04 Oct 2003:
- add support for Altera Nios-32 CPU
  - add support for Nios Cyclone Development Kit (DK-1C20)

* Patch by Steven Scholz, 29 Sep 2003:
  - A second parameter for bootm overwrites the load address for
    "Standalone Application" images.
  - bootm sets environment variable "filesize" to the resulting
    (uncompressed) data length for "Standalone Application" images
    when autostart is set to "no". Now you can do something like
       if bootm $fpgadata $some_free_ram ; then
               fpga load 0 $some_free_ram $filesize
       fi

* Patch by Denis Peter, 25 Sept 2003:
  add support for the MIP405 Rev. C board
2003-10-08 23:26:14 +00:00

56 lines
1.2 KiB
C

/*
* This file is part of GNU CC.
*
* GNU CC 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 2, or (at your
* option) any later version.
*
* GNU CC 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.
*
* You should have received a copy of the GNU General Public
* License along with GNU CC; see the file COPYING. If not, write
* to the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <common.h>
#if !defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP)
#include "math.h"
USItype __mulsi3 (USItype a, USItype b)
{
USItype c = 0;
while (a != 0) {
if (a & 1)
c += b;
a >>= 1;
b <<= 1;
}
return c;
}
UHItype __mulhi3 (UHItype a, UHItype b)
{
UHItype c = 0;
while (a != 0) {
if (a & 1)
c += b;
a >>= 1;
b <<= 1;
}
return c;
}
#endif /*!defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP) */