/*
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* Copyright (C) 2008 Gilles Chanteperdrix <gch@xenomai.org>.
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*
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* This 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 of the License, or (at your option) any later version.
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*
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* This 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <boilerplate/atomic.h>
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#include <asm/xenomai/features.h>
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#include <asm/xenomai/uapi/fptest.h>
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#include "internal.h"
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void cobalt_arch_check_features(struct cobalt_featinfo *finfo)
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{
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#if defined(__i386__) && defined(CONFIG_XENO_X86_VSYSCALL)
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size_t n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0);
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if (n > 0) {
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char buf[n];
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confstr (_CS_GNU_LIBPTHREAD_VERSION, buf, n);
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if (strstr (buf, "NPTL"))
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return;
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}
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early_warning("--enable-x86-vsyscall requires NPTL, which does not match");
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early_warning("your configuration. Please upgrade, or rebuild the");
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early_panic("Xenomai libraries passing --disable-x86-vsyscall");
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#endif /* __i386__ && CONFIG_XENO_X86_VSYSCALL */
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}
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int cobalt_fp_detect(void)
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{
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char buffer[1024];
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int features = 0;
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FILE *fp;
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fp = fopen("/proc/cpuinfo", "r");
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if(fp == NULL)
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return 0;
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while (fgets(buffer, sizeof(buffer), fp)) {
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if(strncmp(buffer, "flags", sizeof("flags") - 1))
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continue;
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if (strstr(buffer, "sse2"))
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features |= __COBALT_HAVE_SSE2;
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if (strstr(buffer, "avx"))
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features |= __COBALT_HAVE_AVX;
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break;
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}
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fclose(fp);
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return features;
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}
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