--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os_cpu/linux_sparc/vm_version_linux_sparc.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "logging/log.hpp"
+#include "precompiled.hpp"
+#include "runtime/os.hpp"
+#include "vm_version_sparc.hpp"
+
+static bool cpuinfo_field_contains(const char* field, const char* value) {
+ char line[1024];
+ bool rv = false;
+
+ FILE* fp = fopen("/proc/cpuinfo", "r");
+ if (fp == NULL) {
+ return rv;
+ }
+
+ while (fgets(line, sizeof(line), fp) != NULL) {
+ assert(strlen(line) < sizeof(line) - 1, "buffer line[1024] is too small.");
+ if (strncmp(line, field, strlen(field)) == 0) {
+ if (strstr(line, value) != NULL) {
+ rv = true;
+ }
+ break;
+ }
+ }
+
+ fclose(fp);
+ return rv;
+}
+
+static bool detect_niagara() {
+ return cpuinfo_field_contains("cpu", "Niagara");
+}
+
+static bool detect_M_family() {
+ return cpuinfo_field_contains("cpu", "SPARC-M");
+}
+
+static bool detect_blkinit() {
+ return cpuinfo_field_contains("cpucaps", "blkinit");
+}
+
+int VM_Version::platform_features(int features) {
+ // Default to generic v9
+ features = generic_v9_m;
+
+ if (detect_niagara()) {
+ log_info(os, cpu)("Detected Linux on Niagara");
+ features = niagara1_m | T_family_m;
+ }
+
+ if (detect_M_family()) {
+ log_info(os, cpu)("Detected Linux on M family");
+ features = sun4v_m | generic_v9_m | M_family_m | T_family_m;
+ }
+
+ if (detect_blkinit()) {
+ features |= blk_init_instructions_m;
+ }
+
+ return features;
+}