1 #ifdef USE_PRAGMA_IDENT_HDR
2 #pragma ident "@(#)interpreterRuntime.hpp 1.143 07/05/05 17:05:38 JVM"
3 #endif
4 /*
5 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7 *
8 * This code is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 only, as
10 * published by the Free Software Foundation.
11 *
12 * This code is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 * version 2 for more details (a copy is included in the LICENSE file that
16 * accompanied this code).
17 *
18 * You should have received a copy of the GNU General Public License version
19 * 2 along with this work; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
21 *
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
24 * have any questions.
25 *
26 */
27
28 // The InterpreterRuntime is called by the interpreter for everything
29 // that cannot/should not be dealt with in assembly and needs C support.
30
31 class InterpreterRuntime: AllStatic {
32 friend class BytecodeClosure; // for method and bcp
33 friend class PrintingClosure; // for method and bcp
34
35 private:
36 // Helper functions to access current interpreter state
37 static frame last_frame(JavaThread *thread) { return thread->last_frame(); }
38 static methodOop method(JavaThread *thread) { return last_frame(thread).interpreter_frame_method(); }
39 static address bcp(JavaThread *thread) { return last_frame(thread).interpreter_frame_bcp(); }
40 static void set_bcp_and_mdp(address bcp, JavaThread*thread);
41 static Bytecodes::Code code(JavaThread *thread) { return Bytecodes::code_at(bcp(thread)); }
42 static bool already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }
43 static int one_byte_index(JavaThread *thread) { return bcp(thread)[1]; }
44 static int two_byte_index(JavaThread *thread) { return Bytes::get_Java_u2(bcp(thread) + 1); }
45 static int number_of_dimensions(JavaThread *thread) { return bcp(thread)[3]; }
46 static ConstantPoolCacheEntry* cache_entry(JavaThread *thread) { return method(thread)->constants()->cache()->entry_at(Bytes::get_native_u2(bcp(thread) + 1)); }
47 static void note_trap(JavaThread *thread, int reason, TRAPS);
48
49 public:
50 // Constants
51 static void ldc (JavaThread* thread, bool wide);
52
53 // Allocation
54 static void _new (JavaThread* thread, constantPoolOopDesc* pool, int index);
55 static void newarray (JavaThread* thread, BasicType type, jint size);
56 static void anewarray (JavaThread* thread, constantPoolOopDesc* pool, int index, jint size);
57 static void multianewarray(JavaThread* thread, jint* first_size_address);
58 static void register_finalizer(JavaThread* thread, oopDesc* obj);
59
60 // Quicken instance-of and check-cast bytecodes
61 static void quicken_io_cc(JavaThread* thread);
62
63 // Exceptions thrown by the interpreter
64 static void throw_AbstractMethodError(JavaThread* thread);
65 static void throw_IncompatibleClassChangeError(JavaThread* thread);
66 static void throw_StackOverflowError(JavaThread* thread);
67 static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);
68 static void throw_ClassCastException(JavaThread* thread, oopDesc* obj);
69 static void create_exception(JavaThread* thread, char* name, char* message);
70 static void create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);
71 static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);
72 static void throw_pending_exception(JavaThread* thread);
73
74 // Statics & fields
75 static void resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode);
76
77 // Synchronization
78 static void monitorenter(JavaThread* thread, BasicObjectLock* elem);
79 static void monitorexit (JavaThread* thread, BasicObjectLock* elem);
80
81 static void throw_illegal_monitor_state_exception(JavaThread* thread);
82 static void new_illegal_monitor_state_exception(JavaThread* thread);
83
84 // Calls
85 static void resolve_invoke (JavaThread* thread, Bytecodes::Code bytecode);
86
87 // Breakpoints
88 static void _breakpoint(JavaThread* thread, methodOopDesc* method, address bcp);
89 static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp);
90 static void set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code);
91 static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; }
92
93 // Safepoints
94 static void at_safepoint(JavaThread* thread);
95
96 // Debugger support
97 static void post_field_access(JavaThread *thread, oopDesc* obj,
98 ConstantPoolCacheEntry *cp_entry);
99 static void post_field_modification(JavaThread *thread, oopDesc* obj,
100 ConstantPoolCacheEntry *cp_entry, jvalue *value);
101 static void post_method_entry(JavaThread *thread);
102 static void post_method_exit (JavaThread *thread);
103 static int interpreter_contains(address pc);
104
105 // Native signature handlers
106 static void prepare_native_call(JavaThread* thread, methodOopDesc* method);
107 static address slow_signature_handler(JavaThread* thread,
108 methodOopDesc* method,
109 intptr_t* from, intptr_t* to);
110
111 #if defined(IA32) || defined(AMD64)
112 // Popframe support (only needed on x86 and AMD64)
113 static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);
114 #endif
115
116 // Platform dependent stuff
117 #include "incls/_interpreterRT_pd.hpp.incl"
118
119 // Interpreter's frequency counter overflow
120 static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);
121
122 // Interpreter profiling support
123 static jint bcp_to_di(methodOopDesc* method, address cur_bcp);
124 static jint profile_method(JavaThread* thread, address cur_bcp);
125 static void update_mdp_for_ret(JavaThread* thread, int bci);
126 #ifdef ASSERT
127 static void verify_mdp(methodOopDesc* method, address bcp, address mdp);
128 #endif // ASSERT
129 };
130
131
132 class SignatureHandlerLibrary: public AllStatic {
133 public:
134 enum { buffer_size = 1*K }; // the size of the temporary code buffer
135 enum { blob_size = 32*K }; // the size of a handler code blob.
136
137 private:
138 static BufferBlob* _handler_blob; // the current buffer blob containing the generated handlers
139 static address _handler; // next available address within _handler_blob;
140 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
141 static GrowableArray<address>* _handlers; // the corresponding handlers
142 static address _buffer; // the temporary code buffer
143
144 static address set_handler_blob();
145 static void initialize();
146 static address set_handler(CodeBuffer* buffer);
147 static void pd_set_handler(address handler);
148
149 public:
150 static void add(methodHandle method);
151 };