/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboilfunction.h>

#include <liboil/liboildebug.h>

#include <liboil/liboilcpu.h>

#include <liboil/liboilfault.h>

#include <liboil/liboilutils.h>

#include <unistd.h>

#include <fcntl.h>

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <setjmp.h>

#include <signal.h>

#include <sys/time.h>

#include <time.h>

/***** arm *****/

//#ifdef __arm__		

#if 0

static unsigned long

oil_profile_stamp_xscale(void)

{

  unsigned int ts;

  __asm__ __volatile__ (

      "  mrc p14, 0, %0, c1, c0, 0 \n"

      : "=r" (ts));

  return ts;

}

#endif

static void

oil_cpu_arm_getflags_cpuinfo (char *cpuinfo)

{

  char *cpuinfo_flags;

  char **flags;

  char **f;

  cpuinfo_flags = get_cpuinfo_line(cpuinfo, "Features");

  if (cpuinfo_flags == NULL) {

    free (cpuinfo);

    return;

  }

  flags = strsplit(cpuinfo_flags);

  for (f = flags; *f; f++) {

    if (strcmp (*f, "edsp") == 0) {

      OIL_DEBUG ("cpu feature %s", *f);

      oil_cpu_flags |= OIL_IMPL_FLAG_EDSP;

    }

    if (strcmp (*f, "vfp") == 0) {

      OIL_DEBUG ("cpu feature %s", *f);

      oil_cpu_flags |= OIL_IMPL_FLAG_VFP;

    }

    free (*f);

  }

  free (flags);

  free (cpuinfo_flags);

}

static char *

get_proc_cpuinfo (void)

{

  char *cpuinfo;

  int fd;

  int n;

  cpuinfo = malloc(4096);

  if (cpuinfo == NULL) return NULL;

  fd = open("/proc/cpuinfo", O_RDONLY);

  if (fd < 0) {

    free (cpuinfo);

    return NULL;

  }

  n = read(fd, cpuinfo, 4095);

  if (n < 0) {

    free (cpuinfo);

    close (fd);

    return NULL;

  }

  cpuinfo[n] = 0;

  close (fd);

  return cpuinfo;

}

#ifdef __SYMBIAN32__

EXPORT_C

#endif

void

oil_cpu_detect_arch(void)

{

#ifdef __linux__

  int arm_implementer = 0;

  int arm_arch;

  char *cpuinfo;

  char *s;

  cpuinfo = get_proc_cpuinfo();

  if (cpuinfo == NULL) return;

  s = get_cpuinfo_line(cpuinfo, "CPU implementer");

  if (s) {

    arm_implementer = strtoul (s, NULL, 0);

    free(s);

  }

  switch(arm_implementer) {

    case 0x69: /* Intel */

    case 0x41: /* ARM */

      /* ARM chips are known to not have timestamping available from 

       * user space */

      break;

    default:

      break;

  }

  s = get_cpuinfo_line(cpuinfo, "CPU architecture");

  if (s) {

    arm_arch = strtoul (s, NULL, 0);

    if (arm_arch >= 6)

      oil_cpu_flags |= OIL_IMPL_FLAG_ARM6;

    free(s);

  }

  oil_cpu_arm_getflags_cpuinfo (cpuinfo);

  free (cpuinfo);

#endif

}

//#endif