Thu, 19 Mar 2009 09:13:24 -0700
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
twisti@1040 | 25 | // This file contains the platform-independent parts |
duke@435 | 26 | // of the template interpreter and the template interpreter generator. |
duke@435 | 27 | |
duke@435 | 28 | #ifndef CC_INTERP |
duke@435 | 29 | |
duke@435 | 30 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 31 | // A little wrapper class to group tosca-specific entry points into a unit. |
duke@435 | 32 | // (tosca = Top-Of-Stack CAche) |
duke@435 | 33 | |
duke@435 | 34 | class EntryPoint VALUE_OBJ_CLASS_SPEC { |
duke@435 | 35 | private: |
duke@435 | 36 | address _entry[number_of_states]; |
duke@435 | 37 | |
duke@435 | 38 | public: |
duke@435 | 39 | // Construction |
duke@435 | 40 | EntryPoint(); |
duke@435 | 41 | EntryPoint(address bentry, address centry, address sentry, address aentry, address ientry, address lentry, address fentry, address dentry, address ventry); |
duke@435 | 42 | |
duke@435 | 43 | // Attributes |
duke@435 | 44 | address entry(TosState state) const; // return target address for a given tosca state |
duke@435 | 45 | void set_entry(TosState state, address entry); // set target address for a given tosca state |
duke@435 | 46 | void print(); |
duke@435 | 47 | |
duke@435 | 48 | // Comparison |
duke@435 | 49 | bool operator == (const EntryPoint& y); // for debugging only |
duke@435 | 50 | }; |
duke@435 | 51 | |
duke@435 | 52 | |
duke@435 | 53 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 54 | // A little wrapper class to group tosca-specific dispatch tables into a unit. |
duke@435 | 55 | |
duke@435 | 56 | class DispatchTable VALUE_OBJ_CLASS_SPEC { |
duke@435 | 57 | public: |
duke@435 | 58 | enum { length = 1 << BitsPerByte }; // an entry point for each byte value (also for undefined bytecodes) |
duke@435 | 59 | |
duke@435 | 60 | private: |
duke@435 | 61 | address _table[number_of_states][length]; // dispatch tables, indexed by tosca and bytecode |
duke@435 | 62 | |
duke@435 | 63 | public: |
duke@435 | 64 | // Attributes |
duke@435 | 65 | EntryPoint entry(int i) const; // return entry point for a given bytecode i |
duke@435 | 66 | void set_entry(int i, EntryPoint& entry); // set entry point for a given bytecode i |
duke@435 | 67 | address* table_for(TosState state) { return _table[state]; } |
duke@435 | 68 | address* table_for() { return table_for((TosState)0); } |
duke@435 | 69 | int distance_from(address *table) { return table - table_for(); } |
duke@435 | 70 | int distance_from(TosState state) { return distance_from(table_for(state)); } |
duke@435 | 71 | |
duke@435 | 72 | // Comparison |
duke@435 | 73 | bool operator == (DispatchTable& y); // for debugging only |
duke@435 | 74 | }; |
duke@435 | 75 | |
duke@435 | 76 | class TemplateInterpreter: public AbstractInterpreter { |
duke@435 | 77 | friend class VMStructs; |
duke@435 | 78 | friend class InterpreterMacroAssembler; |
duke@435 | 79 | friend class TemplateInterpreterGenerator; |
duke@435 | 80 | friend class TemplateTable; |
duke@435 | 81 | // friend class Interpreter; |
duke@435 | 82 | public: |
duke@435 | 83 | |
duke@435 | 84 | enum MoreConstants { |
duke@435 | 85 | number_of_return_entries = 9, // number of return entry points |
duke@435 | 86 | number_of_deopt_entries = 9, // number of deoptimization entry points |
duke@435 | 87 | number_of_return_addrs = 9 // number of return addresses |
duke@435 | 88 | }; |
duke@435 | 89 | |
duke@435 | 90 | protected: |
duke@435 | 91 | |
duke@435 | 92 | static address _throw_ArrayIndexOutOfBoundsException_entry; |
duke@435 | 93 | static address _throw_ArrayStoreException_entry; |
duke@435 | 94 | static address _throw_ArithmeticException_entry; |
duke@435 | 95 | static address _throw_ClassCastException_entry; |
duke@435 | 96 | static address _throw_NullPointerException_entry; |
duke@435 | 97 | static address _throw_exception_entry; |
duke@435 | 98 | |
duke@435 | 99 | static address _throw_StackOverflowError_entry; |
duke@435 | 100 | |
duke@435 | 101 | static address _remove_activation_entry; // continuation address if an exception is not handled by current frame |
duke@435 | 102 | #ifdef HOTSWAP |
duke@435 | 103 | static address _remove_activation_preserving_args_entry; // continuation address when current frame is being popped |
duke@435 | 104 | #endif // HOTSWAP |
duke@435 | 105 | |
duke@435 | 106 | #ifndef PRODUCT |
duke@435 | 107 | static EntryPoint _trace_code; |
duke@435 | 108 | #endif // !PRODUCT |
duke@435 | 109 | static EntryPoint _return_entry[number_of_return_entries]; // entry points to return to from a call |
duke@435 | 110 | static EntryPoint _earlyret_entry; // entry point to return early from a call |
duke@435 | 111 | static EntryPoint _deopt_entry[number_of_deopt_entries]; // entry points to return to from a deoptimization |
duke@435 | 112 | static EntryPoint _continuation_entry; |
duke@435 | 113 | static EntryPoint _safept_entry; |
duke@435 | 114 | |
duke@435 | 115 | static address _return_3_addrs_by_index[number_of_return_addrs]; // for invokevirtual return entries |
duke@435 | 116 | static address _return_5_addrs_by_index[number_of_return_addrs]; // for invokeinterface return entries |
duke@435 | 117 | |
duke@435 | 118 | static DispatchTable _active_table; // the active dispatch table (used by the interpreter for dispatch) |
duke@435 | 119 | static DispatchTable _normal_table; // the normal dispatch table (used to set the active table in normal mode) |
duke@435 | 120 | static DispatchTable _safept_table; // the safepoint dispatch table (used to set the active table for safepoints) |
duke@435 | 121 | static address _wentry_point[DispatchTable::length]; // wide instructions only (vtos tosca always) |
duke@435 | 122 | |
duke@435 | 123 | |
duke@435 | 124 | public: |
duke@435 | 125 | // Initialization/debugging |
duke@435 | 126 | static void initialize(); |
duke@435 | 127 | // this only returns whether a pc is within generated code for the interpreter. |
duke@435 | 128 | static bool contains(address pc) { return _code != NULL && _code->contains(pc); } |
duke@435 | 129 | |
duke@435 | 130 | public: |
duke@435 | 131 | |
duke@435 | 132 | static address remove_activation_early_entry(TosState state) { return _earlyret_entry.entry(state); } |
duke@435 | 133 | #ifdef HOTSWAP |
duke@435 | 134 | static address remove_activation_preserving_args_entry() { return _remove_activation_preserving_args_entry; } |
duke@435 | 135 | #endif // HOTSWAP |
duke@435 | 136 | |
duke@435 | 137 | static address remove_activation_entry() { return _remove_activation_entry; } |
duke@435 | 138 | static address throw_exception_entry() { return _throw_exception_entry; } |
duke@435 | 139 | static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; } |
duke@435 | 140 | static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; } |
duke@435 | 141 | static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } |
duke@435 | 142 | |
duke@435 | 143 | // Code generation |
duke@435 | 144 | #ifndef PRODUCT |
duke@435 | 145 | static address trace_code (TosState state) { return _trace_code.entry(state); } |
duke@435 | 146 | #endif // !PRODUCT |
duke@435 | 147 | static address continuation (TosState state) { return _continuation_entry.entry(state); } |
duke@435 | 148 | static address* dispatch_table(TosState state) { return _active_table.table_for(state); } |
duke@435 | 149 | static address* dispatch_table() { return _active_table.table_for(); } |
duke@435 | 150 | static int distance_from_dispatch_table(TosState state){ return _active_table.distance_from(state); } |
duke@435 | 151 | static address* normal_table(TosState state) { return _normal_table.table_for(state); } |
duke@435 | 152 | static address* normal_table() { return _normal_table.table_for(); } |
duke@435 | 153 | |
duke@435 | 154 | // Support for invokes |
duke@435 | 155 | static address* return_3_addrs_by_index_table() { return _return_3_addrs_by_index; } |
duke@435 | 156 | static address* return_5_addrs_by_index_table() { return _return_5_addrs_by_index; } |
duke@435 | 157 | static int TosState_as_index(TosState state); // computes index into return_3_entry_by_index table |
duke@435 | 158 | |
duke@435 | 159 | static address return_entry (TosState state, int length); |
duke@435 | 160 | static address deopt_entry (TosState state, int length); |
duke@435 | 161 | |
duke@435 | 162 | // Safepoint support |
duke@435 | 163 | static void notice_safepoints(); // stops the thread when reaching a safepoint |
duke@435 | 164 | static void ignore_safepoints(); // ignores safepoints |
duke@435 | 165 | |
duke@435 | 166 | // Deoptimization support |
duke@435 | 167 | static address continuation_for(methodOop method, |
duke@435 | 168 | address bcp, |
duke@435 | 169 | int callee_parameters, |
duke@435 | 170 | bool is_top_frame, |
duke@435 | 171 | bool& use_next_mdp); |
duke@435 | 172 | |
duke@435 | 173 | #include "incls/_templateInterpreter_pd.hpp.incl" |
duke@435 | 174 | |
duke@435 | 175 | }; |
duke@435 | 176 | |
duke@435 | 177 | #endif // !CC_INTERP |