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91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/* Test CPU feature data.
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This file is part of the GNU C Library.
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Copyright (C) 2012-2014 Free Software Foundation, Inc.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <init-arch.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static char *cpu_flags;
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/* Search for flags in /proc/cpuinfo and store line
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in cpu_flags. */
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void
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get_cpuinfo (void)
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{
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FILE *f;
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char *line = NULL;
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size_t len = 0;
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ssize_t read;
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f = fopen ("/proc/cpuinfo", "r");
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if (f == NULL)
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{
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printf ("cannot open /proc/cpuinfo\n");
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exit (1);
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}
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while ((read = getline (&line, &len, f)) != -1)
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{
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if (strncmp (line, "flags", 5) == 0)
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{
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cpu_flags = strdup (line);
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break;
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}
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}
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fclose (f);
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free (line);
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}
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int
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check_proc (const char *proc_name, int flag, const char *name)
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{
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int found = 0;
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printf ("Checking %s:\n", name);
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printf (" init-arch %d\n", flag);
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if (strstr (cpu_flags, proc_name) != NULL)
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found = 1;
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printf (" cpuinfo (%s) %d\n", proc_name, found);
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if (found != flag)
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printf (" *** failure ***\n");
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return (found != flag);
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}
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static int
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do_test (int argc, char **argv)
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{
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int fails;
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get_cpuinfo ();
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fails = check_proc ("avx", HAS_AVX, "HAS_AVX");
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fails += check_proc ("fma4", HAS_FMA4, "HAS_FMA4");
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fails += check_proc ("sse4_2", HAS_SSE4_2, "HAS_SSE4_2");
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fails += check_proc ("sse4_1", HAS_SSE4_1, "HAS_SSE4_1");
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fails += check_proc ("ssse3", HAS_SSSE3, "HAS_SSSE3");
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fails += check_proc ("popcnt", HAS_POPCOUNT, "HAS_POPCOUNT");
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printf ("%d differences between /proc/cpuinfo and glibc code.\n", fails);
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return (fails != 0);
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}
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#include "../../../test-skeleton.c"
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