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 "precompiled.hpp"
  26 #include "runtime/os.hpp"
  27 #include "vm_version_sparc.hpp"
  28 
  29 static bool detect_niagara() {
  30   char cpu[128];
  31   bool rv = false;
  32 
  33   FILE* fp = fopen("/proc/cpuinfo", "r");
  34   if (fp == NULL) {
  35     return rv;
  36   }
  37 
  38   while (!feof(fp)) {
  39     if (fscanf(fp, "cpu\t\t: %100[^\n]", cpu) == 1) {
  40       if (strstr(cpu, "Niagara") != NULL) {

  41         rv = true;
  42       }
  43       break;
  44     }
  45   }
  46 
  47   fclose(fp);
  48 
  49   return rv;
  50 }
  51 








  52 int VM_Version::platform_features(int features) {
  53   // Default to generic v9
  54   features = generic_v9_m;
  55 
  56   if (detect_niagara()) {
  57     NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");)
  58     features = niagara1_m | T_family_m;




  59   }
  60 
  61   return features;
  62 }

   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 "precompiled.hpp"
  26 #include "runtime/os.hpp"
  27 #include "vm_version_sparc.hpp"
  28 
  29 static bool cpuinfo_field_contains(const char* field, const char* value) {
  30   char line[1024];
  31   bool rv = false;
  32 
  33   FILE* fp = fopen("/proc/cpuinfo", "r");
  34   if (fp == NULL) {
  35     return rv;
  36   }
  37 
  38   while (fgets(line, sizeof(line), fp) != NULL) {
  39     assert(strlen(line) < sizeof(line) - 1, "buffer line[1024] is too small.");
  40     if (strncmp(line, field, strlen(field)) == 0) {
  41       if (strstr(line, value) != NULL) {
  42         rv = true;
  43       }
  44       break;
  45     }
  46   }
  47 
  48   fclose(fp);

  49   return rv;
  50 }
  51 
  52 static bool detect_niagara() {
  53   return cpuinfo_field_contains("cpu", "Niagara");
  54 }
  55 
  56 static bool detect_blkinit() {
  57   return cpuinfo_field_contains("cpucaps", "blkinit");
  58 }
  59 
  60 int VM_Version::platform_features(int features) {
  61   // Default to generic v9
  62   features = generic_v9_m;
  63 
  64   if (detect_niagara()) {
  65     NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");)
  66     features = niagara1_m | T_family_m;
  67   }
  68 
  69   if (detect_blkinit()) {
  70     features |= blk_init_instructions_m;
  71   }
  72 
  73   return features;
  74 }