/* Test CPU feature data.

   This file is part of the GNU C Library.

   Copyright (C) 2012-2018 Free Software Foundation, Inc.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <cpu-features.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

static char *cpu_flags;

/* Search for flags in /proc/cpuinfo and store line

   in cpu_flags.  */

void

get_cpuinfo (void)

{

  FILE *f;

  char *line = NULL;

  size_t len = 0;

  ssize_t read;

  f = fopen ("/proc/cpuinfo", "r");

  if (f == NULL)

    {

      printf ("cannot open /proc/cpuinfo\n");

      exit (1);

    }

  while ((read = getline (&line, &len, f)) != -1)

    {

      if (strncmp (line, "flags", 5) == 0)

       {

         cpu_flags = strdup (line);

         break;

       }

    }

  fclose (f);

  free (line);

}

int

check_proc (const char *proc_name, int flag, const char *name)

{

  int found = 0;

  printf ("Checking %s:\n", name);

  printf ("  init-arch %d\n", flag);

  if (strstr (cpu_flags, proc_name) != NULL)

    found = 1;

  printf ("  cpuinfo (%s) %d\n", proc_name, found);

  if (found != flag)

    printf (" *** failure ***\n");

  return (found != flag);

}

static int

do_test (int argc, char **argv)

{

  int fails;

  get_cpuinfo ();

  fails = check_proc ("avx", HAS_ARCH_FEATURE (AVX_Usable),

		      "HAS_ARCH_FEATURE (AVX_Usable)");

  fails += check_proc ("fma4", HAS_ARCH_FEATURE (FMA4_Usable),

		       "HAS_ARCH_FEATURE (FMA4_Usable)");

  fails += check_proc ("sse4_2", HAS_CPU_FEATURE (SSE4_2),

		       "HAS_CPU_FEATURE (SSE4_2)");

  fails += check_proc ("sse4_1", HAS_CPU_FEATURE (SSE4_1)

		       , "HAS_CPU_FEATURE (SSE4_1)");

  fails += check_proc ("ssse3", HAS_CPU_FEATURE (SSSE3),

		       "HAS_CPU_FEATURE (SSSE3)");

  fails += check_proc ("popcnt", HAS_CPU_FEATURE (POPCNT),

		       "HAS_CPU_FEATURE (POPCNT)");

  printf ("%d differences between /proc/cpuinfo and glibc code.\n", fails);

  return (fails != 0);

}

#include "../../../test-skeleton.c"