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1 /*
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196
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2 * Copyright 2006-2008 Sun Microsystems, Inc. All Rights Reserved.
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133
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_vm_version_linux_sparc.cpp.incl"
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27
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28 static bool detect_niagara() {
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29 char cpu[128];
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30 bool rv = false;
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31
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32 FILE* fp = fopen("/proc/cpuinfo", "r");
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33 if (fp == NULL) {
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34 return rv;
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35 }
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36
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37 while (!feof(fp)) {
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38 if (fscanf(fp, "cpu\t\t: %100[^\n]", &cpu) == 1) {
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39 if (strstr(cpu, "Niagara") != NULL) {
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40 rv = true;
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41 }
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42 break;
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43 }
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44 }
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45
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46 fclose(fp);
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47
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48 return rv;
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49 }
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50
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51 int VM_Version::platform_features(int features) {
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52 // Default to generic v9
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53 features = generic_v9_m;
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54
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55 if (detect_niagara()) {
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56 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");)
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57 features = niagara1_m;
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58 }
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59
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60 return features;
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61 }
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