1 /*
   2  * Copyright (c) 1998, 2019, 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* counterMode_aescrypt_Type();
 279 
 280   static const TypeFunc* sha_implCompress_Type();
 281   static const TypeFunc* digestBase_implCompressMB_Type();
 282 
 283   static const TypeFunc* multiplyToLen_Type();
 284   static const TypeFunc* montgomeryMultiply_Type();
 285   static const TypeFunc* montgomerySquare_Type();
 286 
 287   static const TypeFunc* squareToLen_Type();
 288 
 289   static const TypeFunc* mulAdd_Type();
 290 
 291   static const TypeFunc* vectorizedMismatch_Type();
 292 
 293   static const TypeFunc* ghash_processBlocks_Type();
 294   static const TypeFunc* base64_encodeBlock_Type();
 295 
 296   static const TypeFunc* updateBytesCRC32_Type();
 297   static const TypeFunc* updateBytesCRC32C_Type();
 298 
 299   static const TypeFunc* updateBytesAdler32_Type();
 300 
 301   // leaf on stack replacement interpreter accessor types
 302   static const TypeFunc* osr_end_Type();
 303 
 304   // leaf methodData routine types
 305   static const TypeFunc* profile_receiver_type_Type();
 306 
 307   // leaf on stack replacement interpreter accessor types
 308   static const TypeFunc* fetch_int_Type();
 309   static const TypeFunc* fetch_long_Type();
 310   static const TypeFunc* fetch_float_Type();
 311   static const TypeFunc* fetch_double_Type();
 312   static const TypeFunc* fetch_oop_Type();
 313   static const TypeFunc* fetch_monitor_Type();
 314 
 315   static const TypeFunc* register_finalizer_Type();
 316 
 317   // Dtrace support
 318   static const TypeFunc* dtrace_method_entry_exit_Type();
 319   static const TypeFunc* dtrace_object_alloc_Type();
 320 
 321  private:
 322  static NamedCounter * volatile _named_counters;
 323 
 324  public:
 325  // helper function which creates a named counter labeled with the
 326  // if they are available
 327  static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
 328 
 329  // dumps all the named counters
 330  static void          print_named_counters();
 331 
 332 };
 333 
 334 #endif // SHARE_OPTO_RUNTIME_HPP