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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // The InterpreterRuntime is called by the interpreter for everything
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26 // that cannot/should not be dealt with in assembly and needs C support.
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27
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28 class InterpreterRuntime: AllStatic {
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29 friend class BytecodeClosure; // for method and bcp
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30 friend class PrintingClosure; // for method and bcp
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31
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32 private:
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33 // Helper functions to access current interpreter state
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34 static frame last_frame(JavaThread *thread) { return thread->last_frame(); }
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35 static methodOop method(JavaThread *thread) { return last_frame(thread).interpreter_frame_method(); }
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36 static address bcp(JavaThread *thread) { return last_frame(thread).interpreter_frame_bcp(); }
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37 static void set_bcp_and_mdp(address bcp, JavaThread*thread);
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38 static Bytecodes::Code code(JavaThread *thread) { return Bytecodes::code_at(bcp(thread)); }
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39 static bool already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }
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40 static int one_byte_index(JavaThread *thread) { return bcp(thread)[1]; }
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41 static int two_byte_index(JavaThread *thread) { return Bytes::get_Java_u2(bcp(thread) + 1); }
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42 static int number_of_dimensions(JavaThread *thread) { return bcp(thread)[3]; }
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43 static ConstantPoolCacheEntry* cache_entry(JavaThread *thread) { return method(thread)->constants()->cache()->entry_at(Bytes::get_native_u2(bcp(thread) + 1)); }
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44 static void note_trap(JavaThread *thread, int reason, TRAPS);
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45
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46 public:
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47 // Constants
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48 static void ldc (JavaThread* thread, bool wide);
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49
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50 // Allocation
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51 static void _new (JavaThread* thread, constantPoolOopDesc* pool, int index);
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52 static void newarray (JavaThread* thread, BasicType type, jint size);
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53 static void anewarray (JavaThread* thread, constantPoolOopDesc* pool, int index, jint size);
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54 static void multianewarray(JavaThread* thread, jint* first_size_address);
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55 static void register_finalizer(JavaThread* thread, oopDesc* obj);
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56
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57 // Quicken instance-of and check-cast bytecodes
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58 static void quicken_io_cc(JavaThread* thread);
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59
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60 // Exceptions thrown by the interpreter
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61 static void throw_AbstractMethodError(JavaThread* thread);
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62 static void throw_IncompatibleClassChangeError(JavaThread* thread);
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63 static void throw_StackOverflowError(JavaThread* thread);
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64 static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);
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65 static void throw_ClassCastException(JavaThread* thread, oopDesc* obj);
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66 static void create_exception(JavaThread* thread, char* name, char* message);
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67 static void create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);
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68 static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);
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69 static void throw_pending_exception(JavaThread* thread);
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70
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71 // Statics & fields
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72 static void resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode);
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73
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74 // Synchronization
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75 static void monitorenter(JavaThread* thread, BasicObjectLock* elem);
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76 static void monitorexit (JavaThread* thread, BasicObjectLock* elem);
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77
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78 static void throw_illegal_monitor_state_exception(JavaThread* thread);
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79 static void new_illegal_monitor_state_exception(JavaThread* thread);
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80
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81 // Calls
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82 static void resolve_invoke (JavaThread* thread, Bytecodes::Code bytecode);
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83
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84 // Breakpoints
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85 static void _breakpoint(JavaThread* thread, methodOopDesc* method, address bcp);
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86 static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp);
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87 static void set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code);
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88 static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; }
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89
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90 // Safepoints
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91 static void at_safepoint(JavaThread* thread);
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92
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93 // Debugger support
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94 static void post_field_access(JavaThread *thread, oopDesc* obj,
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95 ConstantPoolCacheEntry *cp_entry);
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96 static void post_field_modification(JavaThread *thread, oopDesc* obj,
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97 ConstantPoolCacheEntry *cp_entry, jvalue *value);
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98 static void post_method_entry(JavaThread *thread);
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99 static void post_method_exit (JavaThread *thread);
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100 static int interpreter_contains(address pc);
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101
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102 // Native signature handlers
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103 static void prepare_native_call(JavaThread* thread, methodOopDesc* method);
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104 static address slow_signature_handler(JavaThread* thread,
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105 methodOopDesc* method,
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106 intptr_t* from, intptr_t* to);
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107
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108 #if defined(IA32) || defined(AMD64)
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109 // Popframe support (only needed on x86 and AMD64)
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110 static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);
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111 #endif
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112
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113 // Platform dependent stuff
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114 #include "incls/_interpreterRT_pd.hpp.incl"
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115
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116 // Interpreter's frequency counter overflow
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117 static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);
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118
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119 // Interpreter profiling support
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120 static jint bcp_to_di(methodOopDesc* method, address cur_bcp);
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121 static jint profile_method(JavaThread* thread, address cur_bcp);
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122 static void update_mdp_for_ret(JavaThread* thread, int bci);
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123 #ifdef ASSERT
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124 static void verify_mdp(methodOopDesc* method, address bcp, address mdp);
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125 #endif // ASSERT
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126 };
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127
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128
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129 class SignatureHandlerLibrary: public AllStatic {
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130 public:
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131 enum { buffer_size = 1*K }; // the size of the temporary code buffer
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132 enum { blob_size = 32*K }; // the size of a handler code blob.
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133
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134 private:
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135 static BufferBlob* _handler_blob; // the current buffer blob containing the generated handlers
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136 static address _handler; // next available address within _handler_blob;
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137 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
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138 static GrowableArray<address>* _handlers; // the corresponding handlers
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139 static address _buffer; // the temporary code buffer
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140
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141 static address set_handler_blob();
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142 static void initialize();
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143 static address set_handler(CodeBuffer* buffer);
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144 static void pd_set_handler(address handler);
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145
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146 public:
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147 static void add(methodHandle method);
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148 };
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