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/* mem-test.c. Simple memory test for Or1ksim

   Copyright (C) 1999-2006 OpenCores

   Copyright (C) 2010 Embecosm Limited

   Contributors various OpenCores participants

   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

   This file is part of OpenRISC 1000 Architectural Simulator.

   This program 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 of the License, or (at your option)

   any later version.

   This program 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 this program.  If not, see <http:  www.gnu.org/licenses/>.  */

/* ----------------------------------------------------------------------------

   This code is commented throughout for use with Doxygen.

   --------------------------------------------------------------------------*/

/* Simple test, which tests whether memory accesses are performed correctly.

   WARNING: Requires big endian host!!! */

#include "support.h"

unsigned long _ul, *pul;

unsigned short *pus;

unsigned char *puc;

int main ()

{

  unsigned long cnt = 0;

  _ul = 0x12345678;

  pul = &_ul;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  pus = (unsigned short *)&_ul;

  report (*pus);

  cnt = (cnt + *pus) << 1;

  pus++;

  report (*pus);

  cnt = (cnt + *pus) << 1;

  puc = (unsigned char *)&_ul;

  report (*puc);

  cnt = (cnt + *puc) << 1;

  puc++;

  report (*puc);

  cnt = (cnt + *puc) << 1;

  puc++;

  report (*puc);

  cnt = (cnt + *puc) << 1;

  puc++;

  report (*puc);

  cnt = (cnt + *puc) << 1;

  *pul = 0xdeaddead;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  pus = (unsigned short *)&_ul;

  *pus = 0x5678;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  pus++;

  *pus = 0x1234;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  puc = (unsigned char *)&_ul;

  *puc = 0xdd;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  puc++;

  *puc = 0xcc;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  puc++;

  *puc = 0xbb;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  puc++;

  *puc = 0xaa;

  report (*pul);

  cnt = (cnt + *pul) << 1;

  report (cnt);

  cnt ^= 0xdeaddead ^ 0xda25e544;

  report(cnt);

  return (cnt != 0xdeaddead);

}