--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/vm_version_sparc.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,132 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class VM_Version: public Abstract_VM_Version {
+protected:
+ enum Feature_Flag {
+ v8_instructions = 0,
+ hardware_int_muldiv = 1,
+ hardware_fsmuld = 2,
+ v9_instructions = 3,
+ vis1_instructions = 4,
+ vis2_instructions = 5,
+ sun4v_instructions = 6
+ };
+
+ enum Feature_Flag_Set {
+ unknown_m = 0,
+ all_features_m = -1,
+
+ v8_instructions_m = 1 << v8_instructions,
+ hardware_int_muldiv_m = 1 << hardware_int_muldiv,
+ hardware_fsmuld_m = 1 << hardware_fsmuld,
+ v9_instructions_m = 1 << v9_instructions,
+ vis1_instructions_m = 1 << vis1_instructions,
+ vis2_instructions_m = 1 << vis2_instructions,
+ sun4v_m = 1 << sun4v_instructions,
+
+ generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m,
+ generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m,
+ ultra3_m = generic_v9_m | vis2_instructions_m,
+
+ // Temporary until we have something more accurate
+ niagara1_unique_m = sun4v_m,
+ niagara1_m = generic_v9_m | niagara1_unique_m
+ };
+
+ static int _features;
+ static const char* _features_str;
+
+ static void print_features();
+ static int determine_features();
+ static int platform_features(int features);
+
+ static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; }
+
+public:
+ // Initialization
+ static void initialize();
+
+ // Instruction support
+ static bool has_v8() { return (_features & v8_instructions_m) != 0; }
+ static bool has_v9() { return (_features & v9_instructions_m) != 0; }
+ static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; }
+ static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
+ static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
+ static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
+
+ static bool supports_compare_and_exchange()
+ { return has_v9(); }
+
+ static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; }
+ static bool is_sun4v() { return (_features & sun4v_m) != 0; }
+ static bool is_niagara1() { return is_niagara1(_features); }
+
+ static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); }
+
+ static const char* cpu_features() { return _features_str; }
+
+ static intx L1_data_cache_line_size() {
+ return 64; // default prefetch block size on sparc
+ }
+
+ // Prefetch
+ static intx prefetch_copy_interval_in_bytes() {
+ intx interval = PrefetchCopyIntervalInBytes;
+ return interval >= 0 ? interval : (has_v9() ? 512 : 0);
+ }
+ static intx prefetch_scan_interval_in_bytes() {
+ intx interval = PrefetchScanIntervalInBytes;
+ return interval >= 0 ? interval : (has_v9() ? 512 : 0);
+ }
+ static intx prefetch_fields_ahead() {
+ intx count = PrefetchFieldsAhead;
+ return count >= 0 ? count : (is_ultra3() ? 1 : 0);
+ }
+
+ static intx allocate_prefetch_distance() {
+ // This method should be called before allocate_prefetch_style().
+ intx count = AllocatePrefetchDistance;
+ if (count < 0) { // default is not defined ?
+ count = 512;
+ }
+ return count;
+ }
+ static intx allocate_prefetch_style() {
+ assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
+ // Return 0 if AllocatePrefetchDistance was not defined.
+ return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0;
+ }
+
+ // Legacy
+ static bool v8_instructions_work() { return has_v8() && !has_v9(); }
+ static bool v9_instructions_work() { return has_v9(); }
+
+ // Assembler testing
+ static void allow_all();
+ static void revert();
+
+ // Override the Abstract_VM_Version implementation.
+ static uint page_size_count() { return is_sun4v() ? 4 : 2; }
+};