1 /*
   2  * Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_vm_version_linux_sparc.cpp.incl"
  27 
  28 static bool detect_niagara() {
  29   char cpu[128];
  30   bool rv = false;
  31 
  32   FILE* fp = fopen("/proc/cpuinfo", "r");
  33   if (fp == NULL) {
  34     return rv;
  35   }
  36 
  37   while (!feof(fp)) {
  38     if (fscanf(fp, "cpu\t\t: %100[^\n]", &cpu) == 1) {
  39       if (strstr(cpu, "Niagara") != NULL) {
  40         rv = true;
  41       }
  42       break;
  43     }
  44   }
  45 
  46   fclose(fp);
  47 
  48   return rv;
  49 }
  50 
  51 int VM_Version::platform_features(int features) {
  52   // Default to generic v9
  53   features = generic_v9_m;
  54 
  55   if (detect_niagara()) {
  56     NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");)
  57     features = niagara1_m;
  58   }
  59 
  60   return features;
  61 }