--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,162 @@
+/*
+ * 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.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_vm_version_sparc.cpp.incl"
+
+int VM_Version::_features = VM_Version::unknown_m;
+const char* VM_Version::_features_str = "";
+
+void VM_Version::initialize() {
+ _features = determine_features();
+ PrefetchCopyIntervalInBytes = prefetch_copy_interval_in_bytes();
+ PrefetchScanIntervalInBytes = prefetch_scan_interval_in_bytes();
+ PrefetchFieldsAhead = prefetch_fields_ahead();
+
+ // Allocation prefetch settings
+ intx cache_line_size = L1_data_cache_line_size();
+ if( cache_line_size > AllocatePrefetchStepSize )
+ AllocatePrefetchStepSize = cache_line_size;
+ if( FLAG_IS_DEFAULT(AllocatePrefetchLines) )
+ AllocatePrefetchLines = 3; // Optimistic value
+ assert( AllocatePrefetchLines > 0, "invalid value");
+ if( AllocatePrefetchLines < 1 ) // set valid value in product VM
+ AllocatePrefetchLines = 1; // Conservative value
+
+ AllocatePrefetchDistance = allocate_prefetch_distance();
+ AllocatePrefetchStyle = allocate_prefetch_style();
+
+ assert(AllocatePrefetchDistance % AllocatePrefetchStepSize == 0, "invalid value");
+
+ UseSSE = 0; // Only on x86 and x64
+
+ _supports_cx8 = has_v9();
+
+ if (is_niagara1()) {
+ // Indirect branch is the same cost as direct
+ if (FLAG_IS_DEFAULT(UseInlineCaches)) {
+ UseInlineCaches = false;
+ }
+#ifdef COMPILER2
+ // Indirect branch is the same cost as direct
+ if (FLAG_IS_DEFAULT(UseJumpTables)) {
+ UseJumpTables = true;
+ }
+ // Single-issue, so entry and loop tops are
+ // aligned on a single instruction boundary
+ if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) {
+ InteriorEntryAlignment = 4;
+ }
+ if (FLAG_IS_DEFAULT(OptoLoopAlignment)) {
+ OptoLoopAlignment = 4;
+ }
+#endif
+ }
+
+ char buf[512];
+ jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
+ (has_v8() ? ", has_v8" : ""),
+ (has_v9() ? ", has_v9" : ""),
+ (has_vis1() ? ", has_vis1" : ""),
+ (has_vis2() ? ", has_vis2" : ""),
+ (is_ultra3() ? ", is_ultra3" : ""),
+ (is_sun4v() ? ", is_sun4v" : ""),
+ (is_niagara1() ? ", is_niagara1" : ""),
+ (!has_hardware_int_muldiv() ? ", no-muldiv" : ""),
+ (!has_hardware_fsmuld() ? ", no-fsmuld" : ""));
+
+ // buf is started with ", " or is empty
+ _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf);
+
+#ifndef PRODUCT
+ if (PrintMiscellaneous && Verbose) {
+ tty->print("Allocation: ");
+ if (AllocatePrefetchStyle <= 0) {
+ tty->print_cr("no prefetching");
+ } else {
+ if (AllocatePrefetchLines > 1) {
+ tty->print_cr("PREFETCH %d, %d lines of size %d bytes", AllocatePrefetchDistance, AllocatePrefetchLines, AllocatePrefetchStepSize);
+ } else {
+ tty->print_cr("PREFETCH %d, one line", AllocatePrefetchDistance);
+ }
+ }
+ if (PrefetchCopyIntervalInBytes > 0) {
+ tty->print_cr("PrefetchCopyIntervalInBytes %d", PrefetchCopyIntervalInBytes);
+ }
+ if (PrefetchScanIntervalInBytes > 0) {
+ tty->print_cr("PrefetchScanIntervalInBytes %d", PrefetchScanIntervalInBytes);
+ }
+ if (PrefetchFieldsAhead > 0) {
+ tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead);
+ }
+ }
+#endif // PRODUCT
+}
+
+void VM_Version::print_features() {
+ tty->print_cr("Version:%s", cpu_features());
+}
+
+int VM_Version::determine_features() {
+ if (UseV8InstrsOnly) {
+ NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");)
+ return generic_v8_m;
+ }
+
+ int features = platform_features(unknown_m); // platform_features() is os_arch specific
+
+ if (features == unknown_m) {
+ features = generic_v9_m;
+ warning("Cannot recognize SPARC version. Default to V9");
+ }
+
+ if (UseNiagaraInstrs) {
+ if (is_niagara1(features)) {
+ // Happy to accomodate...
+ } else {
+ NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");)
+ features = niagara1_m;
+ }
+ } else {
+ if (is_niagara1(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) {
+ NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");)
+ features &= ~niagara1_unique_m;
+ } else {
+ // Happy to accomodate...
+ }
+ }
+
+ return features;
+}
+
+static int saved_features = 0;
+
+void VM_Version::allow_all() {
+ saved_features = _features;
+ _features = all_features_m;
+}
+
+void VM_Version::revert() {
+ _features = saved_features;
+}