--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/interpreter/templateInterpreter.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,177 @@
+/*
+ * 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.
+ *
+ */
+
+// This file contains the platform-independant parts
+// of the template interpreter and the template interpreter generator.
+
+#ifndef CC_INTERP
+
+//------------------------------------------------------------------------------------------------------------------------
+// A little wrapper class to group tosca-specific entry points into a unit.
+// (tosca = Top-Of-Stack CAche)
+
+class EntryPoint VALUE_OBJ_CLASS_SPEC {
+ private:
+ address _entry[number_of_states];
+
+ public:
+ // Construction
+ EntryPoint();
+ EntryPoint(address bentry, address centry, address sentry, address aentry, address ientry, address lentry, address fentry, address dentry, address ventry);
+
+ // Attributes
+ address entry(TosState state) const; // return target address for a given tosca state
+ void set_entry(TosState state, address entry); // set target address for a given tosca state
+ void print();
+
+ // Comparison
+ bool operator == (const EntryPoint& y); // for debugging only
+};
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// A little wrapper class to group tosca-specific dispatch tables into a unit.
+
+class DispatchTable VALUE_OBJ_CLASS_SPEC {
+ public:
+ enum { length = 1 << BitsPerByte }; // an entry point for each byte value (also for undefined bytecodes)
+
+ private:
+ address _table[number_of_states][length]; // dispatch tables, indexed by tosca and bytecode
+
+ public:
+ // Attributes
+ EntryPoint entry(int i) const; // return entry point for a given bytecode i
+ void set_entry(int i, EntryPoint& entry); // set entry point for a given bytecode i
+ address* table_for(TosState state) { return _table[state]; }
+ address* table_for() { return table_for((TosState)0); }
+ int distance_from(address *table) { return table - table_for(); }
+ int distance_from(TosState state) { return distance_from(table_for(state)); }
+
+ // Comparison
+ bool operator == (DispatchTable& y); // for debugging only
+};
+
+class TemplateInterpreter: public AbstractInterpreter {
+ friend class VMStructs;
+ friend class InterpreterMacroAssembler;
+ friend class TemplateInterpreterGenerator;
+ friend class TemplateTable;
+ // friend class Interpreter;
+ public:
+
+ enum MoreConstants {
+ number_of_return_entries = 9, // number of return entry points
+ number_of_deopt_entries = 9, // number of deoptimization entry points
+ number_of_return_addrs = 9 // number of return addresses
+ };
+
+ protected:
+
+ static address _throw_ArrayIndexOutOfBoundsException_entry;
+ static address _throw_ArrayStoreException_entry;
+ static address _throw_ArithmeticException_entry;
+ static address _throw_ClassCastException_entry;
+ static address _throw_NullPointerException_entry;
+ static address _throw_exception_entry;
+
+ static address _throw_StackOverflowError_entry;
+
+ static address _remove_activation_entry; // continuation address if an exception is not handled by current frame
+#ifdef HOTSWAP
+ static address _remove_activation_preserving_args_entry; // continuation address when current frame is being popped
+#endif // HOTSWAP
+
+#ifndef PRODUCT
+ static EntryPoint _trace_code;
+#endif // !PRODUCT
+ static EntryPoint _return_entry[number_of_return_entries]; // entry points to return to from a call
+ static EntryPoint _earlyret_entry; // entry point to return early from a call
+ static EntryPoint _deopt_entry[number_of_deopt_entries]; // entry points to return to from a deoptimization
+ static EntryPoint _continuation_entry;
+ static EntryPoint _safept_entry;
+
+ static address _return_3_addrs_by_index[number_of_return_addrs]; // for invokevirtual return entries
+ static address _return_5_addrs_by_index[number_of_return_addrs]; // for invokeinterface return entries
+
+ static DispatchTable _active_table; // the active dispatch table (used by the interpreter for dispatch)
+ static DispatchTable _normal_table; // the normal dispatch table (used to set the active table in normal mode)
+ static DispatchTable _safept_table; // the safepoint dispatch table (used to set the active table for safepoints)
+ static address _wentry_point[DispatchTable::length]; // wide instructions only (vtos tosca always)
+
+
+ public:
+ // Initialization/debugging
+ static void initialize();
+ // this only returns whether a pc is within generated code for the interpreter.
+ static bool contains(address pc) { return _code != NULL && _code->contains(pc); }
+
+ public:
+
+ static address remove_activation_early_entry(TosState state) { return _earlyret_entry.entry(state); }
+#ifdef HOTSWAP
+ static address remove_activation_preserving_args_entry() { return _remove_activation_preserving_args_entry; }
+#endif // HOTSWAP
+
+ static address remove_activation_entry() { return _remove_activation_entry; }
+ static address throw_exception_entry() { return _throw_exception_entry; }
+ static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; }
+ static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; }
+ static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; }
+
+ // Code generation
+#ifndef PRODUCT
+ static address trace_code (TosState state) { return _trace_code.entry(state); }
+#endif // !PRODUCT
+ static address continuation (TosState state) { return _continuation_entry.entry(state); }
+ static address* dispatch_table(TosState state) { return _active_table.table_for(state); }
+ static address* dispatch_table() { return _active_table.table_for(); }
+ static int distance_from_dispatch_table(TosState state){ return _active_table.distance_from(state); }
+ static address* normal_table(TosState state) { return _normal_table.table_for(state); }
+ static address* normal_table() { return _normal_table.table_for(); }
+
+ // Support for invokes
+ static address* return_3_addrs_by_index_table() { return _return_3_addrs_by_index; }
+ static address* return_5_addrs_by_index_table() { return _return_5_addrs_by_index; }
+ static int TosState_as_index(TosState state); // computes index into return_3_entry_by_index table
+
+ static address return_entry (TosState state, int length);
+ static address deopt_entry (TosState state, int length);
+
+ // Safepoint support
+ static void notice_safepoints(); // stops the thread when reaching a safepoint
+ static void ignore_safepoints(); // ignores safepoints
+
+ // Deoptimization support
+ static address continuation_for(methodOop method,
+ address bcp,
+ int callee_parameters,
+ bool is_top_frame,
+ bool& use_next_mdp);
+
+#include "incls/_templateInterpreter_pd.hpp.incl"
+
+};
+
+#endif // !CC_INTERP