1 /* 2 * Copyright (c) 1998, 2010, 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/deoptimization.hpp" 33 #include "runtime/vframe.hpp" 34 35 //------------------------------OptoRuntime------------------------------------ 36 // Opto compiler runtime routines 37 // 38 // These are all generated from Ideal graphs. They are called with the 39 // Java calling convention. Internally they call C++. They are made once at 40 // startup time and Opto compiles calls to them later. 41 // Things are broken up into quads: the signature they will be called with, 42 // the address of the generated code, the corresponding C++ code and an 43 // nmethod. 44 45 // The signature (returned by "xxx_Type()") is used at startup time by the 46 // Generator to make the generated code "xxx_Java". Opto compiles calls 47 // to the generated code "xxx_Java". When the compiled code gets executed, 48 // it calls the C++ code "xxx_C". The generated nmethod is saved in the 49 // CodeCache. Exception handlers use the nmethod to get the callee-save 50 // register OopMaps. 51 class CallInfo; 52 53 // 54 // NamedCounters are tagged counters which can be used for profiling 55 // code in various ways. Currently they are used by the lock coarsening code 56 // 57 58 class NamedCounter : public CHeapObj { 59 public: 60 enum CounterTag { 61 NoTag, 62 LockCounter, 63 EliminatedLockCounter, 64 BiasedLockingCounter 65 }; 66 67 private: 68 const char * _name; 69 int _count; 70 CounterTag _tag; 71 NamedCounter* _next; 72 73 public: 74 NamedCounter(const char *n, CounterTag tag = NoTag): 75 _name(n), 76 _count(0), 77 _next(NULL), 78 _tag(tag) {} 79 80 const char * name() const { return _name; } 81 int count() const { return _count; } 82 address addr() { return (address)&_count; } 83 CounterTag tag() const { return _tag; } 84 void set_tag(CounterTag tag) { _tag = tag; } 85 86 NamedCounter* next() const { return _next; } 87 void set_next(NamedCounter* next) { 88 assert(_next == NULL, "already set"); 89 _next = next; 90 } 91 92 }; 93 94 class BiasedLockingNamedCounter : public NamedCounter { 95 private: 96 BiasedLockingCounters _counters; 97 98 public: 99 BiasedLockingNamedCounter(const char *n) : 100 NamedCounter(n, BiasedLockingCounter), _counters() {} 101 102 BiasedLockingCounters* counters() { return &_counters; } 103 }; 104 105 typedef const TypeFunc*(*TypeFunc_generator)(); 106 107 class OptoRuntime : public AllStatic { 108 friend class Matcher; // allow access to stub names 109 110 private: 111 // define stubs 112 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); 113 114 // References to generated stubs 115 static address _new_instance_Java; 116 static address _new_array_Java; 117 static address _multianewarray2_Java; 118 static address _multianewarray3_Java; 119 static address _multianewarray4_Java; 120 static address _multianewarray5_Java; 121 static address _g1_wb_pre_Java; 122 static address _g1_wb_post_Java; 123 static address _vtable_must_compile_Java; 124 static address _complete_monitor_locking_Java; 125 static address _rethrow_Java; 126 127 static address _slow_arraycopy_Java; 128 static address _register_finalizer_Java; 129 130 # ifdef ENABLE_ZAP_DEAD_LOCALS 131 static address _zap_dead_Java_locals_Java; 132 static address _zap_dead_native_locals_Java; 133 # endif 134 135 136 // 137 // Implementation of runtime methods 138 // ================================= 139 140 // Allocate storage for a Java instance. 141 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread); 142 143 // Allocate storage for a objArray or typeArray 144 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread); 145 146 // Post-slow-path-allocation, pre-initializing-stores step for 147 // implementing ReduceInitialCardMarks 148 static void new_store_pre_barrier(JavaThread* thread); 149 150 // Allocate storage for a multi-dimensional arrays 151 // Note: needs to be fixed for arbitrary number of dimensions 152 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread); 153 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread); 154 static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread); 155 static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread); 156 static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread); 157 static void g1_wb_post_C(void* card_addr, JavaThread* thread); 158 159 public: 160 // Slow-path Locking and Unlocking 161 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); 162 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); 163 164 private: 165 166 // Implicit exception support 167 static void throw_null_exception_C(JavaThread* thread); 168 169 // Exception handling 170 static address handle_exception_C (JavaThread* thread); 171 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm); 172 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc ); 173 static void deoptimize_caller_frame (JavaThread *thread, bool doit); 174 175 // CodeBlob support 176 // =================================================================== 177 178 static ExceptionBlob* _exception_blob; 179 static void generate_exception_blob(); 180 181 static void register_finalizer(oopDesc* obj, JavaThread* thread); 182 183 // zaping dead locals, either from Java frames or from native frames 184 # ifdef ENABLE_ZAP_DEAD_LOCALS 185 static void zap_dead_Java_locals_C( JavaThread* thread); 186 static void zap_dead_native_locals_C( JavaThread* thread); 187 188 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*)); 189 190 public: 191 static int ZapDeadCompiledLocals_count; 192 193 # endif 194 195 196 public: 197 198 static bool is_callee_saved_register(MachRegisterNumbers reg); 199 200 // One time only generate runtime code stubs 201 static void generate(ciEnv* env); 202 203 // Returns the name of a stub 204 static const char* stub_name(address entry); 205 206 // access to runtime stubs entry points for java code 207 static address new_instance_Java() { return _new_instance_Java; } 208 static address new_array_Java() { return _new_array_Java; } 209 static address multianewarray2_Java() { return _multianewarray2_Java; } 210 static address multianewarray3_Java() { return _multianewarray3_Java; } 211 static address multianewarray4_Java() { return _multianewarray4_Java; } 212 static address multianewarray5_Java() { return _multianewarray5_Java; } 213 static address g1_wb_pre_Java() { return _g1_wb_pre_Java; } 214 static address g1_wb_post_Java() { return _g1_wb_post_Java; } 215 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; } 216 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; } 217 218 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; } 219 static address register_finalizer_Java() { return _register_finalizer_Java; } 220 221 222 # ifdef ENABLE_ZAP_DEAD_LOCALS 223 static address zap_dead_locals_stub(bool is_native) { return is_native 224 ? _zap_dead_native_locals_Java 225 : _zap_dead_Java_locals_Java; } 226 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native); 227 # endif 228 229 static ExceptionBlob* exception_blob() { return _exception_blob; } 230 231 // Leaf routines helping with method data update 232 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver); 233 234 // Implicit exception support 235 static void throw_div0_exception_C (JavaThread* thread); 236 static void throw_stack_overflow_error_C(JavaThread* thread); 237 238 // Exception handling 239 static address rethrow_stub() { return _rethrow_Java; } 240 241 242 // Type functions 243 // ====================================================== 244 245 static const TypeFunc* new_instance_Type(); // object allocation (slow case) 246 static const TypeFunc* new_array_Type (); // [a]newarray (slow case) 247 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray 248 static const TypeFunc* multianewarray2_Type(); // multianewarray 249 static const TypeFunc* multianewarray3_Type(); // multianewarray 250 static const TypeFunc* multianewarray4_Type(); // multianewarray 251 static const TypeFunc* multianewarray5_Type(); // multianewarray 252 static const TypeFunc* g1_wb_pre_Type(); 253 static const TypeFunc* g1_wb_post_Type(); 254 static const TypeFunc* complete_monitor_enter_Type(); 255 static const TypeFunc* complete_monitor_exit_Type(); 256 static const TypeFunc* uncommon_trap_Type(); 257 static const TypeFunc* athrow_Type(); 258 static const TypeFunc* rethrow_Type(); 259 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends 260 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends 261 static const TypeFunc* modf_Type(); 262 static const TypeFunc* l2f_Type(); 263 static const TypeFunc* current_time_millis_Type(); 264 265 static const TypeFunc* flush_windows_Type(); 266 267 // arraycopy routine types 268 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters 269 static const TypeFunc* checkcast_arraycopy_Type(); 270 static const TypeFunc* generic_arraycopy_Type(); 271 static const TypeFunc* slow_arraycopy_Type(); // the full routine 272 273 static const TypeFunc* array_fill_Type(); 274 275 // leaf on stack replacement interpreter accessor types 276 static const TypeFunc* osr_end_Type(); 277 278 // leaf methodData routine types 279 static const TypeFunc* profile_receiver_type_Type(); 280 281 // leaf on stack replacement interpreter accessor types 282 static const TypeFunc* fetch_int_Type(); 283 static const TypeFunc* fetch_long_Type(); 284 static const TypeFunc* fetch_float_Type(); 285 static const TypeFunc* fetch_double_Type(); 286 static const TypeFunc* fetch_oop_Type(); 287 static const TypeFunc* fetch_monitor_Type(); 288 289 static const TypeFunc* register_finalizer_Type(); 290 291 // Dtrace support 292 static const TypeFunc* dtrace_method_entry_exit_Type(); 293 static const TypeFunc* dtrace_object_alloc_Type(); 294 295 # ifdef ENABLE_ZAP_DEAD_LOCALS 296 static const TypeFunc* zap_dead_locals_Type(); 297 # endif 298 299 private: 300 static NamedCounter * volatile _named_counters; 301 302 public: 303 // helper function which creates a named counter labeled with the 304 // if they are available 305 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag); 306 307 // dumps all the named counters 308 static void print_named_counters(); 309 310 }; 311 312 #endif // SHARE_VM_OPTO_RUNTIME_HPP