1 /*
2 * Copyright (c) 1998, 2020, 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_OPTO_RUNTIME_HPP
26 #define SHARE_OPTO_RUNTIME_HPP
27
28 #include "code/codeBlob.hpp"
29 #include "opto/machnode.hpp"
30 #include "opto/optoreg.hpp"
31 #include "opto/type.hpp"
32 #include "runtime/biasedLocking.hpp"
33 #include "runtime/rtmLocking.hpp"
34 #include "runtime/deoptimization.hpp"
35 #include "runtime/vframe.hpp"
36
37 //------------------------------OptoRuntime------------------------------------
38 // Opto compiler runtime routines
39 //
40 // These are all generated from Ideal graphs. They are called with the
41 // Java calling convention. Internally they call C++. They are made once at
42 // startup time and Opto compiles calls to them later.
43 // Things are broken up into quads: the signature they will be called with,
44 // the address of the generated code, the corresponding C++ code and an
45 // nmethod.
46
47 // The signature (returned by "xxx_Type()") is used at startup time by the
48 // Generator to make the generated code "xxx_Java". Opto compiles calls
49 // to the generated code "xxx_Java". When the compiled code gets executed,
50 // it calls the C++ code "xxx_C". The generated nmethod is saved in the
51 // CodeCache. Exception handlers use the nmethod to get the callee-save
52 // register OopMaps.
53 class CallInfo;
54
55 //
56 // NamedCounters are tagged counters which can be used for profiling
57 // code in various ways. Currently they are used by the lock coarsening code
58 //
59
60 class NamedCounter : public CHeapObj<mtCompiler> {
61 public:
62 enum CounterTag {
63 NoTag,
64 LockCounter,
65 EliminatedLockCounter,
66 BiasedLockingCounter,
67 RTMLockingCounter
68 };
69
70 private:
71 const char * _name;
72 int _count;
73 CounterTag _tag;
74 NamedCounter* _next;
75
76 public:
77 NamedCounter(const char *n, CounterTag tag = NoTag):
78 _name(n == NULL ? NULL : os::strdup(n)),
79 _count(0),
80 _tag(tag),
81 _next(NULL) {}
82
83 ~NamedCounter() {
84 if (_name != NULL) {
85 os::free((void*)_name);
86 }
87 }
88
89 const char * name() const { return _name; }
90 int count() const { return _count; }
91 address addr() { return (address)&_count; }
92 CounterTag tag() const { return _tag; }
93 void set_tag(CounterTag tag) { _tag = tag; }
94
95 NamedCounter* next() const { return _next; }
96 void set_next(NamedCounter* next) {
97 assert(_next == NULL || next == NULL, "already set");
98 _next = next;
99 }
100
101 };
102
103 class BiasedLockingNamedCounter : public NamedCounter {
104 private:
105 BiasedLockingCounters _counters;
106
107 public:
108 BiasedLockingNamedCounter(const char *n) :
109 NamedCounter(n, BiasedLockingCounter), _counters() {}
110
111 BiasedLockingCounters* counters() { return &_counters; }
112 };
113
114
115 class RTMLockingNamedCounter : public NamedCounter {
116 private:
117 RTMLockingCounters _counters;
118
119 public:
120 RTMLockingNamedCounter(const char *n) :
121 NamedCounter(n, RTMLockingCounter), _counters() {}
122
123 RTMLockingCounters* counters() { return &_counters; }
124 };
125
126 typedef const TypeFunc*(*TypeFunc_generator)();
127
128 class OptoRuntime : public AllStatic {
129 friend class Matcher; // allow access to stub names
130
131 private:
132 // define stubs
133 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);
134
135 // References to generated stubs
136 static address _new_instance_Java;
137 static address _new_array_Java;
138 static address _new_array_nozero_Java;
139 static address _multianewarray2_Java;
140 static address _multianewarray3_Java;
141 static address _multianewarray4_Java;
142 static address _multianewarray5_Java;
143 static address _multianewarrayN_Java;
144 static address _vtable_must_compile_Java;
145 static address _complete_monitor_locking_Java;
146 static address _rethrow_Java;
147 static address _monitor_notify_Java;
148 static address _monitor_notifyAll_Java;
149
150 static address _slow_arraycopy_Java;
151 static address _register_finalizer_Java;
152
153 //
154 // Implementation of runtime methods
155 // =================================
156
157 // Allocate storage for a Java instance.
158 static void new_instance_C(Klass* instance_klass, JavaThread *thread);
159
160 // Allocate storage for a objArray or typeArray
161 static void new_array_C(Klass* array_klass, int len, JavaThread *thread);
162 static void new_array_nozero_C(Klass* array_klass, int len, JavaThread *thread);
163
164 // Allocate storage for a multi-dimensional arrays
165 // Note: needs to be fixed for arbitrary number of dimensions
166 static void multianewarray2_C(Klass* klass, int len1, int len2, JavaThread *thread);
167 static void multianewarray3_C(Klass* klass, int len1, int len2, int len3, JavaThread *thread);
168 static void multianewarray4_C(Klass* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
169 static void multianewarray5_C(Klass* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
170 static void multianewarrayN_C(Klass* klass, arrayOopDesc* dims, JavaThread *thread);
171
172 public:
173 // Slow-path Locking and Unlocking
174 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
175 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
176
177 static void monitor_notify_C(oopDesc* obj, JavaThread* thread);
178 static void monitor_notifyAll_C(oopDesc* obj, JavaThread* thread);
179
180 private:
181
182 // Implicit exception support
183 static void throw_null_exception_C(JavaThread* thread);
184
185 // Exception handling
186 static address handle_exception_C (JavaThread* thread);
187 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
188 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
189 static void deoptimize_caller_frame (JavaThread *thread);
190 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
191 static bool is_deoptimized_caller_frame (JavaThread *thread);
192
193 // CodeBlob support
194 // ===================================================================
195
196 static ExceptionBlob* _exception_blob;
197 static void generate_exception_blob();
198
199 static void register_finalizer(oopDesc* obj, JavaThread* thread);
200
201 public:
202
203 static bool is_callee_saved_register(MachRegisterNumbers reg);
204
205 // One time only generate runtime code stubs. Returns true
206 // when runtime stubs have been generated successfully and
207 // false otherwise.
208 static bool generate(ciEnv* env);
209
210 // Returns the name of a stub
211 static const char* stub_name(address entry);
212
213 // access to runtime stubs entry points for java code
214 static address new_instance_Java() { return _new_instance_Java; }
215 static address new_array_Java() { return _new_array_Java; }
216 static address new_array_nozero_Java() { return _new_array_nozero_Java; }
217 static address multianewarray2_Java() { return _multianewarray2_Java; }
218 static address multianewarray3_Java() { return _multianewarray3_Java; }
219 static address multianewarray4_Java() { return _multianewarray4_Java; }
220 static address multianewarray5_Java() { return _multianewarray5_Java; }
221 static address multianewarrayN_Java() { return _multianewarrayN_Java; }
222 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
223 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
224 static address monitor_notify_Java() { return _monitor_notify_Java; }
225 static address monitor_notifyAll_Java() { return _monitor_notifyAll_Java; }
226
227 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
228 static address register_finalizer_Java() { return _register_finalizer_Java; }
229
230 static ExceptionBlob* exception_blob() { return _exception_blob; }
231
232 // Leaf routines helping with method data update
233 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
234
235 // Implicit exception support
236 static void throw_div0_exception_C (JavaThread* thread);
237 static void throw_stack_overflow_error_C(JavaThread* thread);
238
239 // Exception handling
240 static address rethrow_stub() { return _rethrow_Java; }
241
242
243 // Type functions
244 // ======================================================
245
246 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
247 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
248 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
249 static const TypeFunc* multianewarray2_Type(); // multianewarray
250 static const TypeFunc* multianewarray3_Type(); // multianewarray
251 static const TypeFunc* multianewarray4_Type(); // multianewarray
252 static const TypeFunc* multianewarray5_Type(); // multianewarray
253 static const TypeFunc* multianewarrayN_Type(); // multianewarray
254 static const TypeFunc* complete_monitor_enter_Type();
255 static const TypeFunc* complete_monitor_exit_Type();
256 static const TypeFunc* monitor_notify_Type();
257 static const TypeFunc* uncommon_trap_Type();
258 static const TypeFunc* athrow_Type();
259 static const TypeFunc* rethrow_Type();
260 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
261 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
262 static const TypeFunc* modf_Type();
263 static const TypeFunc* l2f_Type();
264 static const TypeFunc* void_long_Type();
265
266 static const TypeFunc* flush_windows_Type();
267
268 // arraycopy routine types
269 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
270 static const TypeFunc* checkcast_arraycopy_Type();
271 static const TypeFunc* generic_arraycopy_Type();
272 static const TypeFunc* slow_arraycopy_Type(); // the full routine
273
274 static const TypeFunc* array_fill_Type();
275
276 static const TypeFunc* aescrypt_block_Type();
277 static const TypeFunc* cipherBlockChaining_aescrypt_Type();
278 static const TypeFunc* electronicCodeBook_aescrypt_Type();
279 static const TypeFunc* counterMode_aescrypt_Type();
280
281 static const TypeFunc* digestBase_implCompress_Type();
282 static const TypeFunc* digestBase_implCompressMB_Type();
283
284 static const TypeFunc* multiplyToLen_Type();
285 static const TypeFunc* montgomeryMultiply_Type();
286 static const TypeFunc* montgomerySquare_Type();
287
288 static const TypeFunc* squareToLen_Type();
289
290 static const TypeFunc* mulAdd_Type();
291
292 static const TypeFunc* bigIntegerShift_Type();
293
294 static const TypeFunc* vectorizedMismatch_Type();
295
296 static const TypeFunc* ghash_processBlocks_Type();
297 static const TypeFunc* base64_encodeBlock_Type();
298
299 static const TypeFunc* updateBytesCRC32_Type();
300 static const TypeFunc* updateBytesCRC32C_Type();
301
302 static const TypeFunc* updateBytesAdler32_Type();
303
304 // leaf on stack replacement interpreter accessor types
305 static const TypeFunc* osr_end_Type();
306
307 // leaf methodData routine types
308 static const TypeFunc* profile_receiver_type_Type();
309
310 // leaf on stack replacement interpreter accessor types
311 static const TypeFunc* fetch_int_Type();
312 static const TypeFunc* fetch_long_Type();
313 static const TypeFunc* fetch_float_Type();
314 static const TypeFunc* fetch_double_Type();
315 static const TypeFunc* fetch_oop_Type();
316 static const TypeFunc* fetch_monitor_Type();
317
318 static const TypeFunc* register_finalizer_Type();
319
320 // Dtrace support
321 static const TypeFunc* dtrace_method_entry_exit_Type();
322 static const TypeFunc* dtrace_object_alloc_Type();
323
324 private:
325 static NamedCounter * volatile _named_counters;
326
327 public:
328 // helper function which creates a named counter labeled with the
329 // if they are available
330 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
331
332 // dumps all the named counters
333 static void print_named_counters();
334
335 };
336
337 #endif // SHARE_OPTO_RUNTIME_HPP