interpreterRuntime.hpp revision 1472:c18cbe5936b8 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25// The InterpreterRuntime is called by the interpreter for everything
26// that cannot/should not be dealt with in assembly and needs C support.
27
28class InterpreterRuntime: AllStatic {
29  friend class BytecodeClosure; // for method and bcp
30  friend class PrintingClosure; // for method and bcp
31
32 private:
33  // Helper functions to access current interpreter state
34  static frame     last_frame(JavaThread *thread)    { return thread->last_frame(); }
35  static methodOop method(JavaThread *thread)        { return last_frame(thread).interpreter_frame_method(); }
36  static address   bcp(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bcp(); }
37  static void      set_bcp_and_mdp(address bcp, JavaThread*thread);
38  static Bytecodes::Code code(JavaThread *thread)    {
39    // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272)
40    return Bytecodes::code_at(bcp(thread), method(thread));
41  }
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       four_byte_index(JavaThread *thread)  { return Bytes::get_native_u4(bcp(thread) + 1); }
46  static int       number_of_dimensions(JavaThread *thread)  { return bcp(thread)[3]; }
47
48  static ConstantPoolCacheEntry* cache_entry_at(JavaThread *thread, int i)  { return method(thread)->constants()->cache()->entry_at(i); }
49  static ConstantPoolCacheEntry* cache_entry(JavaThread *thread)            { return cache_entry_at(thread, Bytes::get_native_u2(bcp(thread) + 1)); }
50  static void      note_trap(JavaThread *thread, int reason, TRAPS);
51
52  // Inner work method for Interpreter's frequency counter overflow
53  static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp);
54
55 public:
56  // Constants
57  static void    ldc           (JavaThread* thread, bool wide);
58
59  // Allocation
60  static void    _new          (JavaThread* thread, constantPoolOopDesc* pool, int index);
61  static void    newarray      (JavaThread* thread, BasicType type, jint size);
62  static void    anewarray     (JavaThread* thread, constantPoolOopDesc* pool, int index, jint size);
63  static void    multianewarray(JavaThread* thread, jint* first_size_address);
64  static void    register_finalizer(JavaThread* thread, oopDesc* obj);
65
66  // Quicken instance-of and check-cast bytecodes
67  static void    quicken_io_cc(JavaThread* thread);
68
69  // Exceptions thrown by the interpreter
70  static void    throw_AbstractMethodError(JavaThread* thread);
71  static void    throw_IncompatibleClassChangeError(JavaThread* thread);
72  static void    throw_StackOverflowError(JavaThread* thread);
73  static void    throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);
74  static void    throw_ClassCastException(JavaThread* thread, oopDesc* obj);
75  static void    throw_WrongMethodTypeException(JavaThread* thread, oopDesc* mtype = NULL, oopDesc* mhandle = NULL);
76  static void    create_exception(JavaThread* thread, char* name, char* message);
77  static void    create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);
78  static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);
79  static void    throw_pending_exception(JavaThread* thread);
80
81  // Statics & fields
82  static void    resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode);
83
84  // Synchronization
85  static void    monitorenter(JavaThread* thread, BasicObjectLock* elem);
86  static void    monitorexit (JavaThread* thread, BasicObjectLock* elem);
87
88  static void    throw_illegal_monitor_state_exception(JavaThread* thread);
89  static void    new_illegal_monitor_state_exception(JavaThread* thread);
90
91  // Calls
92  static void    resolve_invoke       (JavaThread* thread, Bytecodes::Code bytecode);
93  static void    resolve_invokedynamic(JavaThread* thread);
94
95  // Breakpoints
96  static void _breakpoint(JavaThread* thread, methodOopDesc* method, address bcp);
97  static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp);
98  static void            set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code);
99  static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; }
100
101  // Safepoints
102  static void    at_safepoint(JavaThread* thread);
103
104  // Debugger support
105  static void post_field_access(JavaThread *thread, oopDesc* obj,
106    ConstantPoolCacheEntry *cp_entry);
107  static void post_field_modification(JavaThread *thread, oopDesc* obj,
108    ConstantPoolCacheEntry *cp_entry, jvalue *value);
109  static void post_method_entry(JavaThread *thread);
110  static void post_method_exit (JavaThread *thread);
111  static int  interpreter_contains(address pc);
112
113  // Native signature handlers
114  static void prepare_native_call(JavaThread* thread, methodOopDesc* method);
115  static address slow_signature_handler(JavaThread* thread,
116                                        methodOopDesc* method,
117                                        intptr_t* from, intptr_t* to);
118
119#if defined(IA32) || defined(AMD64)
120  // Popframe support (only needed on x86 and AMD64)
121  static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);
122#endif
123
124  // Platform dependent stuff
125  #include "incls/_interpreterRT_pd.hpp.incl"
126
127  // Interpreter's frequency counter overflow
128  static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);
129
130  // Interpreter profiling support
131  static jint    bcp_to_di(methodOopDesc* method, address cur_bcp);
132  static jint    profile_method(JavaThread* thread, address cur_bcp);
133  static void    update_mdp_for_ret(JavaThread* thread, int bci);
134#ifdef ASSERT
135  static void    verify_mdp(methodOopDesc* method, address bcp, address mdp);
136#endif // ASSERT
137};
138
139
140class SignatureHandlerLibrary: public AllStatic {
141 public:
142  enum { buffer_size =  1*K }; // the size of the temporary code buffer
143  enum { blob_size   = 32*K }; // the size of a handler code blob.
144
145 private:
146  static BufferBlob*              _handler_blob; // the current buffer blob containing the generated handlers
147  static address                  _handler;      // next available address within _handler_blob;
148  static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
149  static GrowableArray<address>*  _handlers;     // the corresponding handlers
150  static address                  _buffer;       // the temporary code buffer
151
152  static address set_handler_blob();
153  static void initialize();
154  static address set_handler(CodeBuffer* buffer);
155  static void pd_set_handler(address handler);
156
157 public:
158  static void add(methodHandle method);
159};
160