--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/interpreter/templateInterpreter.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 1997, 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.
+ *
+ */
+
+#ifndef SHARE_VM_INTERPRETER_TEMPLATEINTERPRETER_HPP
+#define SHARE_VM_INTERPRETER_TEMPLATEINTERPRETER_HPP
+
+#include "interpreter/abstractInterpreter.hpp"
+#include "interpreter/templateTable.hpp"
+
+// This file contains the platform-independent parts
+// of the template interpreter and the template interpreter generator.
+
+#ifndef CC_INTERP
+
+class InterpreterMacroAssembler;
+class InterpreterCodelet;
+
+//------------------------------------------------------------------------------------------------------------------------
+// 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 zentry, 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 CodeCacheExtensions;
+ // friend class Interpreter;
+ public:
+
+ enum MoreConstants {
+ number_of_return_entries = number_of_states, // number of return entry points
+ number_of_deopt_entries = number_of_states, // number of deoptimization entry points
+ number_of_return_addrs = number_of_states // 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 _safept_entry;
+
+ static address _invoke_return_entry[number_of_return_addrs]; // for invokestatic, invokespecial, invokevirtual return entries
+ static address _invokeinterface_return_entry[number_of_return_addrs]; // for invokeinterface return entries
+ static address _invokedynamic_return_entry[number_of_return_addrs]; // for invokedynamic 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); }
+ // Debugging/printing
+ static InterpreterCodelet* codelet_containing(address 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* 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* invoke_return_entry_table() { return _invoke_return_entry; }
+ static address* invokeinterface_return_entry_table() { return _invokeinterface_return_entry; }
+ static address* invokedynamic_return_entry_table() { return _invokedynamic_return_entry; }
+ static int TosState_as_index(TosState state);
+
+ static address* invoke_return_entry_table_for(Bytecodes::Code code);
+
+ static address deopt_entry(TosState state, int length);
+ static address return_entry(TosState state, int length, Bytecodes::Code code);
+
+ // Safepoint support
+ static void notice_safepoints(); // stops the thread when reaching a safepoint
+ static void ignore_safepoints(); // ignores safepoints
+
+ // Deoptimization support
+ // Compute the entry address for continuation after
+ static address deopt_continue_after_entry(Method* method,
+ address bcp,
+ int callee_parameters,
+ bool is_top_frame);
+ // Deoptimization should reexecute this bytecode
+ static bool bytecode_should_reexecute(Bytecodes::Code code);
+ // Compute the address for reexecution
+ static address deopt_reexecute_entry(Method* method, address bcp);
+
+ // Size of interpreter code. Max size with JVMTI
+ static int InterpreterCodeSize;
+};
+
+#endif // !CC_INTERP
+
+#endif // SHARE_VM_INTERPRETER_TEMPLATEINTERPRETER_HPP