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comparison src/share/vm/opto/runtime.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
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.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 //------------------------------OptoRuntime------------------------------------
26 // Opto compiler runtime routines
27 //
28 // These are all generated from Ideal graphs. They are called with the
29 // Java calling convention. Internally they call C++. They are made once at
30 // startup time and Opto compiles calls to them later.
31 // Things are broken up into quads: the signature they will be called with,
32 // the address of the generated code, the corresponding C++ code and an
33 // nmethod.
34
35 // The signature (returned by "xxx_Type()") is used at startup time by the
36 // Generator to make the generated code "xxx_Java". Opto compiles calls
37 // to the generated code "xxx_Java". When the compiled code gets executed,
38 // it calls the C++ code "xxx_C". The generated nmethod is saved in the
39 // CodeCache. Exception handlers use the nmethod to get the callee-save
40 // register OopMaps.
41 class CallInfo;
42
43 //
44 // NamedCounters are tagged counters which can be used for profiling
45 // code in various ways. Currently they are used by the lock coarsening code
46 //
47
48 class NamedCounter : public CHeapObj {
49 public:
50 enum CounterTag {
51 NoTag,
52 LockCounter,
53 EliminatedLockCounter,
54 BiasedLockingCounter
55 };
56
57 private:
58 const char * _name;
59 int _count;
60 CounterTag _tag;
61 NamedCounter* _next;
62
63 public:
64 NamedCounter(const char *n, CounterTag tag = NoTag):
65 _name(n),
66 _count(0),
67 _next(NULL),
68 _tag(tag) {}
69
70 const char * name() const { return _name; }
71 int count() const { return _count; }
72 address addr() { return (address)&_count; }
73 CounterTag tag() const { return _tag; }
74 void set_tag(CounterTag tag) { _tag = tag; }
75
76 NamedCounter* next() const { return _next; }
77 void set_next(NamedCounter* next) {
78 assert(_next == NULL, "already set");
79 _next = next;
80 }
81
82 };
83
84 class BiasedLockingNamedCounter : public NamedCounter {
85 private:
86 BiasedLockingCounters _counters;
87
88 public:
89 BiasedLockingNamedCounter(const char *n) :
90 NamedCounter(n, BiasedLockingCounter), _counters() {}
91
92 BiasedLockingCounters* counters() { return &_counters; }
93 };
94
95 typedef const TypeFunc*(*TypeFunc_generator)();
96
97 class OptoRuntime : public AllStatic {
98 friend class Matcher; // allow access to stub names
99
100 private:
101 // define stubs
102 static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);
103
104 // References to generated stubs
105 static address _new_instance_Java;
106 static address _new_array_Java;
107 static address _multianewarray2_Java;
108 static address _multianewarray3_Java;
109 static address _multianewarray4_Java;
110 static address _multianewarray5_Java;
111 static address _vtable_must_compile_Java;
112 static address _complete_monitor_locking_Java;
113 static address _rethrow_Java;
114
115 static address _slow_arraycopy_Java;
116 static address _register_finalizer_Java;
117
118 # ifdef ENABLE_ZAP_DEAD_LOCALS
119 static address _zap_dead_Java_locals_Java;
120 static address _zap_dead_native_locals_Java;
121 # endif
122
123
124 //
125 // Implementation of runtime methods
126 // =================================
127
128 // Allocate storage for a Java instance.
129 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
130
131 // Allocate storage for a objArray or typeArray
132 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
133
134 // Post-allocation step for implementing ReduceInitialCardMarks:
135 static void do_eager_card_mark(JavaThread* thread);
136
137 // Allocate storage for a multi-dimensional arrays
138 // Note: needs to be fixed for arbitrary number of dimensions
139 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
140 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);
141 static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
142 static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
143
144 public:
145 // Slow-path Locking and Unlocking
146 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
147 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
148
149 private:
150
151 // Implicit exception support
152 static void throw_null_exception_C(JavaThread* thread);
153
154 // Exception handling
155 static address handle_exception_C (JavaThread* thread);
156 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
157 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
158 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
159
160 // CodeBlob support
161 // ===================================================================
162
163 static ExceptionBlob* _exception_blob;
164 static void generate_exception_blob();
165
166 static void register_finalizer(oopDesc* obj, JavaThread* thread);
167
168 // zaping dead locals, either from Java frames or from native frames
169 # ifdef ENABLE_ZAP_DEAD_LOCALS
170 static void zap_dead_Java_locals_C( JavaThread* thread);
171 static void zap_dead_native_locals_C( JavaThread* thread);
172
173 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
174
175 public:
176 static int ZapDeadCompiledLocals_count;
177
178 # endif
179
180
181 public:
182
183 static bool is_callee_saved_register(MachRegisterNumbers reg);
184
185 // One time only generate runtime code stubs
186 static void generate(ciEnv* env);
187
188 // Returns the name of a stub
189 static const char* stub_name(address entry);
190
191 // access to runtime stubs entry points for java code
192 static address new_instance_Java() { return _new_instance_Java; }
193 static address new_array_Java() { return _new_array_Java; }
194 static address multianewarray2_Java() { return _multianewarray2_Java; }
195 static address multianewarray3_Java() { return _multianewarray3_Java; }
196 static address multianewarray4_Java() { return _multianewarray4_Java; }
197 static address multianewarray5_Java() { return _multianewarray5_Java; }
198 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
199 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
200
201 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
202 static address register_finalizer_Java() { return _register_finalizer_Java; }
203
204
205 # ifdef ENABLE_ZAP_DEAD_LOCALS
206 static address zap_dead_locals_stub(bool is_native) { return is_native
207 ? _zap_dead_native_locals_Java
208 : _zap_dead_Java_locals_Java; }
209 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
210 # endif
211
212 static ExceptionBlob* exception_blob() { return _exception_blob; }
213
214 // Leaf routines helping with method data update
215 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
216
217 // Implicit exception support
218 static void throw_div0_exception_C (JavaThread* thread);
219 static void throw_stack_overflow_error_C(JavaThread* thread);
220
221 // Exception handling
222 static address rethrow_stub() { return _rethrow_Java; }
223
224
225 // Type functions
226 // ======================================================
227
228 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
229 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
230 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
231 static const TypeFunc* multianewarray2_Type(); // multianewarray
232 static const TypeFunc* multianewarray3_Type(); // multianewarray
233 static const TypeFunc* multianewarray4_Type(); // multianewarray
234 static const TypeFunc* multianewarray5_Type(); // multianewarray
235 static const TypeFunc* complete_monitor_enter_Type();
236 static const TypeFunc* complete_monitor_exit_Type();
237 static const TypeFunc* uncommon_trap_Type();
238 static const TypeFunc* athrow_Type();
239 static const TypeFunc* rethrow_Type();
240 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
241 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
242 static const TypeFunc* modf_Type();
243 static const TypeFunc* l2f_Type();
244 static const TypeFunc* current_time_millis_Type();
245
246 static const TypeFunc* flush_windows_Type();
247
248 // arraycopy routine types
249 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
250 static const TypeFunc* checkcast_arraycopy_Type();
251 static const TypeFunc* generic_arraycopy_Type();
252 static const TypeFunc* slow_arraycopy_Type(); // the full routine
253
254 // leaf on stack replacement interpreter accessor types
255 static const TypeFunc* osr_end_Type();
256
257 // leaf methodData routine types
258 static const TypeFunc* profile_receiver_type_Type();
259
260 // leaf on stack replacement interpreter accessor types
261 static const TypeFunc* fetch_int_Type();
262 static const TypeFunc* fetch_long_Type();
263 static const TypeFunc* fetch_float_Type();
264 static const TypeFunc* fetch_double_Type();
265 static const TypeFunc* fetch_oop_Type();
266 static const TypeFunc* fetch_monitor_Type();
267
268 static const TypeFunc* register_finalizer_Type();
269
270 // Dtrace support
271 static const TypeFunc* dtrace_method_entry_exit_Type();
272 static const TypeFunc* dtrace_object_alloc_Type();
273
274 # ifdef ENABLE_ZAP_DEAD_LOCALS
275 static const TypeFunc* zap_dead_locals_Type();
276 # endif
277
278 private:
279 static NamedCounter * volatile _named_counters;
280
281 public:
282 // helper function which creates a named counter labeled with the
283 // if they are available
284 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
285
286 // dumps all the named counters
287 static void print_named_counters();
288
289 };