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 _g1_wb_pre_Java;
112 static address _g1_wb_post_Java;
113 static address _vtable_must_compile_Java;
114 static address _complete_monitor_locking_Java;
115 static address _rethrow_Java;
116
117 static address _slow_arraycopy_Java;
118 static address _register_finalizer_Java;
119
120 # ifdef ENABLE_ZAP_DEAD_LOCALS
121 static address _zap_dead_Java_locals_Java;
122 static address _zap_dead_native_locals_Java;
123 # endif
124
125
126 //
127 // Implementation of runtime methods
128 // =================================
129
130 // Allocate storage for a Java instance.
131 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
132
133 // Allocate storage for a objArray or typeArray
134 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
135
136 // Post-slow-path-allocation step for implementing ReduceInitialCardMarks:
137 static void maybe_defer_card_mark(JavaThread* thread);
138
139 // Allocate storage for a multi-dimensional arrays
140 // Note: needs to be fixed for arbitrary number of dimensions
141 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
142 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);
143 static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
144 static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
145 static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);
146 static void g1_wb_post_C(void* card_addr, JavaThread* thread);
147
148 public:
149 // Slow-path Locking and Unlocking
150 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
151 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
152
153 private:
154
155 // Implicit exception support
156 static void throw_null_exception_C(JavaThread* thread);
157
158 // Exception handling
159 static address handle_exception_C (JavaThread* thread);
160 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
161 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
162 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
163
164 // CodeBlob support
165 // ===================================================================
166
167 static ExceptionBlob* _exception_blob;
168 static void generate_exception_blob();
169
170 static void register_finalizer(oopDesc* obj, JavaThread* thread);
171
172 // zaping dead locals, either from Java frames or from native frames
173 # ifdef ENABLE_ZAP_DEAD_LOCALS
174 static void zap_dead_Java_locals_C( JavaThread* thread);
175 static void zap_dead_native_locals_C( JavaThread* thread);
176
177 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
178
179 public:
180 static int ZapDeadCompiledLocals_count;
181
182 # endif
183
184
185 public:
186
187 static bool is_callee_saved_register(MachRegisterNumbers reg);
188
189 // One time only generate runtime code stubs
190 static void generate(ciEnv* env);
191
192 // Returns the name of a stub
193 static const char* stub_name(address entry);
194
195 // access to runtime stubs entry points for java code
196 static address new_instance_Java() { return _new_instance_Java; }
197 static address new_array_Java() { return _new_array_Java; }
198 static address multianewarray2_Java() { return _multianewarray2_Java; }
199 static address multianewarray3_Java() { return _multianewarray3_Java; }
200 static address multianewarray4_Java() { return _multianewarray4_Java; }
201 static address multianewarray5_Java() { return _multianewarray5_Java; }
202 static address g1_wb_pre_Java() { return _g1_wb_pre_Java; }
203 static address g1_wb_post_Java() { return _g1_wb_post_Java; }
204 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
205 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
206
207 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
208 static address register_finalizer_Java() { return _register_finalizer_Java; }
209
210
211 # ifdef ENABLE_ZAP_DEAD_LOCALS
212 static address zap_dead_locals_stub(bool is_native) { return is_native
213 ? _zap_dead_native_locals_Java
214 : _zap_dead_Java_locals_Java; }
215 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
216 # endif
217
218 static ExceptionBlob* exception_blob() { return _exception_blob; }
219
220 // Leaf routines helping with method data update
221 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
222
223 // Implicit exception support
224 static void throw_div0_exception_C (JavaThread* thread);
225 static void throw_stack_overflow_error_C(JavaThread* thread);
226
227 // Exception handling
228 static address rethrow_stub() { return _rethrow_Java; }
229
230
231 // Type functions
232 // ======================================================
233
234 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
235 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
236 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
237 static const TypeFunc* multianewarray2_Type(); // multianewarray
238 static const TypeFunc* multianewarray3_Type(); // multianewarray
239 static const TypeFunc* multianewarray4_Type(); // multianewarray
240 static const TypeFunc* multianewarray5_Type(); // multianewarray
241 static const TypeFunc* g1_wb_pre_Type();
242 static const TypeFunc* g1_wb_post_Type();
243 static const TypeFunc* complete_monitor_enter_Type();
244 static const TypeFunc* complete_monitor_exit_Type();
245 static const TypeFunc* uncommon_trap_Type();
246 static const TypeFunc* athrow_Type();
247 static const TypeFunc* rethrow_Type();
248 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
249 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
250 static const TypeFunc* modf_Type();
251 static const TypeFunc* l2f_Type();
252 static const TypeFunc* current_time_millis_Type();
253
254 static const TypeFunc* flush_windows_Type();
255
256 // arraycopy routine types
257 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
258 static const TypeFunc* checkcast_arraycopy_Type();
259 static const TypeFunc* generic_arraycopy_Type();
260 static const TypeFunc* slow_arraycopy_Type(); // the full routine
261
262 // leaf on stack replacement interpreter accessor types
263 static const TypeFunc* osr_end_Type();
264
265 // leaf methodData routine types
266 static const TypeFunc* profile_receiver_type_Type();
267
268 // leaf on stack replacement interpreter accessor types
269 static const TypeFunc* fetch_int_Type();
270 static const TypeFunc* fetch_long_Type();
271 static const TypeFunc* fetch_float_Type();
272 static const TypeFunc* fetch_double_Type();
273 static const TypeFunc* fetch_oop_Type();
274 static const TypeFunc* fetch_monitor_Type();
275
276 static const TypeFunc* register_finalizer_Type();
277
278 // Dtrace support
279 static const TypeFunc* dtrace_method_entry_exit_Type();
280 static const TypeFunc* dtrace_object_alloc_Type();
281
282 # ifdef ENABLE_ZAP_DEAD_LOCALS
283 static const TypeFunc* zap_dead_locals_Type();
284 # endif
285
286 static const TypeFunc *must_post_exception_events_Type();
287
288 private:
289 static NamedCounter * volatile _named_counters;
290
291 public:
292 // helper function which creates a named counter labeled with the
293 // if they are available
294 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
295
296 // dumps all the named counters
297 static void print_named_counters();
298
299 };