Mercurial > hg > truffle
diff src/share/vm/interpreter/templateInterpreter.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 98cb887364d3 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/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