1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_OPTO_RUNTIME_HPP
26 #define SHARE_VM_OPTO_RUNTIME_HPP
27
28 #include "code/codeBlob.hpp"
29 #include "opto/machnode.hpp"
30 #include "opto/type.hpp"
31 #include "runtime/biasedLocking.hpp"
32 #include "runtime/rtmLocking.hpp"
33 #include "runtime/deoptimization.hpp"
34 #include "runtime/vframe.hpp"
35
36 //------------------------------OptoRuntime------------------------------------
37 // Opto compiler runtime routines
38 //
39 // These are all generated from Ideal graphs. They are called with the
40 // Java calling convention. Internally they call C++. They are made once at
41 // startup time and Opto compiles calls to them later.
42 // Things are broken up into quads: the signature they will be called with,
43 // the address of the generated code, the corresponding C++ code and an
44 // nmethod.
45
46 // The signature (returned by "xxx_Type()") is used at startup time by the
47 // Generator to make the generated code "xxx_Java". Opto compiles calls
48 // to the generated code "xxx_Java". When the compiled code gets executed,
49 // it calls the C++ code "xxx_C". The generated nmethod is saved in the
50 // CodeCache. Exception handlers use the nmethod to get the callee-save
51 // register OopMaps.
52 class CallInfo;
53
54 //
55 // NamedCounters are tagged counters which can be used for profiling
56 // code in various ways. Currently they are used by the lock coarsening code
57 //
58
59 class NamedCounter : public CHeapObj<mtCompiler> {
60 public:
61 enum CounterTag {
62 NoTag,
63 LockCounter,
64 EliminatedLockCounter,
65 BiasedLockingCounter,
66 RTMLockingCounter
67 };
68
69 private:
70 const char * _name;
71 int _count;
72 CounterTag _tag;
73 NamedCounter* _next;
74
75 public:
76 NamedCounter(const char *n, CounterTag tag = NoTag):
77 _name(n),
78 _count(0),
79 _next(NULL),
80 _tag(tag) {}
81
82 const char * name() const { return _name; }
83 int count() const { return _count; }
84 address addr() { return (address)&_count; }
85 CounterTag tag() const { return _tag; }
86 void set_tag(CounterTag tag) { _tag = tag; }
87
88 NamedCounter* next() const { return _next; }
89 void set_next(NamedCounter* next) {
90 assert(_next == NULL || next == NULL, "already set");
91 _next = next;
92 }
93
94 };
95
96 class BiasedLockingNamedCounter : public NamedCounter {
97 private:
98 BiasedLockingCounters _counters;
99
100 public:
101 BiasedLockingNamedCounter(const char *n) :
102 NamedCounter(n, BiasedLockingCounter), _counters() {}
103
104 BiasedLockingCounters* counters() { return &_counters; }
105 };
106
107
108 class RTMLockingNamedCounter : public NamedCounter {
109 private:
110 RTMLockingCounters _counters;
111
112 public:
113 RTMLockingNamedCounter(const char *n) :
114 NamedCounter(n, RTMLockingCounter), _counters() {}
115
116 RTMLockingCounters* counters() { return &_counters; }
117 };
118
119 typedef const TypeFunc*(*TypeFunc_generator)();
120
121 class OptoRuntime : public AllStatic {
122 friend class Matcher; // allow access to stub names
123
124 private:
125 // define stubs
126 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);
127
128 // References to generated stubs
129 static address _new_instance_Java;
130 static address _new_array_Java;
131 static address _new_array_nozero_Java;
132 static address _multianewarray2_Java;
133 static address _multianewarray3_Java;
134 static address _multianewarray4_Java;
135 static address _multianewarray5_Java;
136 static address _multianewarrayN_Java;
137 static address _g1_wb_pre_Java;
138 static address _g1_wb_post_Java;
139 static address _vtable_must_compile_Java;
140 static address _complete_monitor_locking_Java;
141 static address _rethrow_Java;
142
143 static address _slow_arraycopy_Java;
144 static address _register_finalizer_Java;
145
146 # ifdef ENABLE_ZAP_DEAD_LOCALS
147 static address _zap_dead_Java_locals_Java;
148 static address _zap_dead_native_locals_Java;
149 # endif
150
151
152 //
153 // Implementation of runtime methods
154 // =================================
155
156 // Allocate storage for a Java instance.
157 static void new_instance_C(Klass* instance_klass, JavaThread *thread);
158
159 // Allocate storage for a objArray or typeArray
160 static void new_array_C(Klass* array_klass, int len, JavaThread *thread);
161 static void new_array_nozero_C(Klass* array_klass, int len, JavaThread *thread);
162
163 // Post-slow-path-allocation, pre-initializing-stores step for
164 // implementing ReduceInitialCardMarks
165 static void new_store_pre_barrier(JavaThread* thread);
166
167 // Allocate storage for a multi-dimensional arrays
168 // Note: needs to be fixed for arbitrary number of dimensions
169 static void multianewarray2_C(Klass* klass, int len1, int len2, JavaThread *thread);
170 static void multianewarray3_C(Klass* klass, int len1, int len2, int len3, JavaThread *thread);
171 static void multianewarray4_C(Klass* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
172 static void multianewarray5_C(Klass* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
173 static void multianewarrayN_C(Klass* klass, arrayOopDesc* dims, JavaThread *thread);
174 static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);
175 static void g1_wb_post_C(void* card_addr, JavaThread* thread);
176
177 public:
178 // Slow-path Locking and Unlocking
179 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
180 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
181
182 private:
183
184 // Implicit exception support
185 static void throw_null_exception_C(JavaThread* thread);
186
187 // Exception handling
188 static address handle_exception_C (JavaThread* thread);
189 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
190 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
191 static void deoptimize_caller_frame (JavaThread *thread);
192 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
193 static bool is_deoptimized_caller_frame (JavaThread *thread);
194
195 // CodeBlob support
196 // ===================================================================
197
198 static ExceptionBlob* _exception_blob;
199 static void generate_exception_blob();
200
201 static void register_finalizer(oopDesc* obj, JavaThread* thread);
202
203 // zaping dead locals, either from Java frames or from native frames
204 # ifdef ENABLE_ZAP_DEAD_LOCALS
205 static void zap_dead_Java_locals_C( JavaThread* thread);
206 static void zap_dead_native_locals_C( JavaThread* thread);
207
208 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
209
210 public:
211 static int ZapDeadCompiledLocals_count;
212
213 # endif
214
215
216 public:
217
218 static bool is_callee_saved_register(MachRegisterNumbers reg);
219
220 // One time only generate runtime code stubs. Returns true
221 // when runtime stubs have been generated successfully and
222 // false otherwise.
223 static bool generate(ciEnv* env);
224
225 // Returns the name of a stub
226 static const char* stub_name(address entry);
227
228 // access to runtime stubs entry points for java code
229 static address new_instance_Java() { return _new_instance_Java; }
230 static address new_array_Java() { return _new_array_Java; }
231 static address new_array_nozero_Java() { return _new_array_nozero_Java; }
232 static address multianewarray2_Java() { return _multianewarray2_Java; }
233 static address multianewarray3_Java() { return _multianewarray3_Java; }
234 static address multianewarray4_Java() { return _multianewarray4_Java; }
235 static address multianewarray5_Java() { return _multianewarray5_Java; }
236 static address multianewarrayN_Java() { return _multianewarrayN_Java; }
237 static address g1_wb_pre_Java() { return _g1_wb_pre_Java; }
238 static address g1_wb_post_Java() { return _g1_wb_post_Java; }
239 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
240 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
241
242 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
243 static address register_finalizer_Java() { return _register_finalizer_Java; }
244
245
246 # ifdef ENABLE_ZAP_DEAD_LOCALS
247 static address zap_dead_locals_stub(bool is_native) { return is_native
248 ? _zap_dead_native_locals_Java
249 : _zap_dead_Java_locals_Java; }
250 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
251 # endif
252
253 static ExceptionBlob* exception_blob() { return _exception_blob; }
254
255 // Leaf routines helping with method data update
256 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
257
258 // Implicit exception support
259 static void throw_div0_exception_C (JavaThread* thread);
260 static void throw_stack_overflow_error_C(JavaThread* thread);
261
262 // Exception handling
263 static address rethrow_stub() { return _rethrow_Java; }
264
265
266 // Type functions
267 // ======================================================
268
269 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
270 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
271 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
272 static const TypeFunc* multianewarray2_Type(); // multianewarray
273 static const TypeFunc* multianewarray3_Type(); // multianewarray
274 static const TypeFunc* multianewarray4_Type(); // multianewarray
275 static const TypeFunc* multianewarray5_Type(); // multianewarray
276 static const TypeFunc* multianewarrayN_Type(); // multianewarray
277 static const TypeFunc* g1_wb_pre_Type();
278 static const TypeFunc* g1_wb_post_Type();
279 static const TypeFunc* complete_monitor_enter_Type();
280 static const TypeFunc* complete_monitor_exit_Type();
281 static const TypeFunc* uncommon_trap_Type();
282 static const TypeFunc* athrow_Type();
283 static const TypeFunc* rethrow_Type();
284 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
285 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
286 static const TypeFunc* modf_Type();
287 static const TypeFunc* l2f_Type();
288 static const TypeFunc* void_long_Type();
289
290 static const TypeFunc* flush_windows_Type();
291
292 // arraycopy routine types
293 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
294 static const TypeFunc* checkcast_arraycopy_Type();
295 static const TypeFunc* generic_arraycopy_Type();
296 static const TypeFunc* slow_arraycopy_Type(); // the full routine
297
298 static const TypeFunc* array_fill_Type();
299
300 static const TypeFunc* aescrypt_block_Type();
301 static const TypeFunc* cipherBlockChaining_aescrypt_Type();
302
303 static const TypeFunc* sha_implCompress_Type();
304 static const TypeFunc* digestBase_implCompressMB_Type();
305
306 static const TypeFunc* updateBytesCRC32_Type();
307
308 // leaf on stack replacement interpreter accessor types
309 static const TypeFunc* osr_end_Type();
310
311 // leaf methodData routine types
312 static const TypeFunc* profile_receiver_type_Type();
313
314 // leaf on stack replacement interpreter accessor types
315 static const TypeFunc* fetch_int_Type();
316 static const TypeFunc* fetch_long_Type();
317 static const TypeFunc* fetch_float_Type();
318 static const TypeFunc* fetch_double_Type();
319 static const TypeFunc* fetch_oop_Type();
320 static const TypeFunc* fetch_monitor_Type();
321
322 static const TypeFunc* register_finalizer_Type();
323
324 // Dtrace support
325 static const TypeFunc* dtrace_method_entry_exit_Type();
326 static const TypeFunc* dtrace_object_alloc_Type();
327
328 # ifdef ENABLE_ZAP_DEAD_LOCALS
329 static const TypeFunc* zap_dead_locals_Type();
330 # endif
331
332 private:
333 static NamedCounter * volatile _named_counters;
334
335 public:
336 // helper function which creates a named counter labeled with the
337 // if they are available
338 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
339
340 // dumps all the named counters
341 static void print_named_counters();
342
343 };
344
345 #endif // SHARE_VM_OPTO_RUNTIME_HPP