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src/hotspot/share/runtime/sharedRuntime.hpp

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  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_RUNTIME_SHAREDRUNTIME_HPP
 26 #define SHARE_RUNTIME_SHAREDRUNTIME_HPP
 27 

 28 #include "code/codeBlob.hpp"
 29 #include "code/vmreg.hpp"
 30 #include "interpreter/bytecodeTracer.hpp"
 31 #include "interpreter/linkResolver.hpp"
 32 #include "memory/allocation.hpp"
 33 #include "memory/resourceArea.hpp"

 34 #include "utilities/hashtable.hpp"
 35 #include "utilities/macros.hpp"
 36 
 37 class AdapterHandlerEntry;
 38 class AdapterHandlerTable;
 39 class AdapterFingerPrint;
 40 class vframeStream;

 41 
 42 // Runtime is the base class for various runtime interfaces
 43 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
 44 // shared functionality such as exception forwarding (C++ to
 45 // Java exceptions), locking/unlocking mechanisms, statistical
 46 // information, etc.
 47 
 48 class SharedRuntime: AllStatic {
 49   friend class VMStructs;
 50 
 51  private:
 52   static bool resolve_sub_helper_internal(methodHandle callee_method, const frame& caller_frame,
 53                                           CompiledMethod* caller_nm, bool is_virtual, bool is_optimized,
 54                                           Handle receiver, CallInfo& call_info, Bytecodes::Code invoke_code, TRAPS);
 55   static methodHandle resolve_sub_helper(bool is_virtual, bool is_optimized, TRAPS);
 56 
 57   // Shared stub locations
 58 
 59   static RuntimeStub*        _wrong_method_blob;
 60   static RuntimeStub*        _wrong_method_abstract_blob;
 61   static RuntimeStub*        _ic_miss_blob;
 62   static RuntimeStub*        _resolve_opt_virtual_call_blob;
 63   static RuntimeStub*        _resolve_virtual_call_blob;
 64   static RuntimeStub*        _resolve_static_call_blob;
 65   static address             _resolve_static_call_entry;
 66 
 67   static DeoptimizationBlob* _deopt_blob;
 68 
 69   static SafepointBlob*      _polling_page_vectors_safepoint_handler_blob;
 70   static SafepointBlob*      _polling_page_safepoint_handler_blob;
 71   static SafepointBlob*      _polling_page_return_handler_blob;
 72 
 73 #ifdef COMPILER2
 74   static UncommonTrapBlob*   _uncommon_trap_blob;
 75 #endif // COMPILER2
 76 
 77 #ifndef PRODUCT
 78   // Counters
 79   static int64_t _nof_megamorphic_calls;         // total # of megamorphic calls (through vtable)
 80 #endif // !PRODUCT
 81 
 82  private:
 83   enum { POLL_AT_RETURN,  POLL_AT_LOOP, POLL_AT_VECTOR_LOOP };
 84   static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type);
 85   static RuntimeStub*   generate_resolve_blob(address destination, const char* name);
 86 
 87  public:
 88   static void generate_stubs(void);
 89 
 90   // max bytes for each dtrace string parameter
 91   enum { max_dtrace_string_size = 256 };
 92 
 93   // The following arithmetic routines are used on platforms that do
 94   // not have machine instructions to implement their functionality.
 95   // Do not remove these.
 96 
 97   // long arithmetics
 98   static jlong   lmul(jlong y, jlong x);
 99   static jlong   ldiv(jlong y, jlong x);
100   static jlong   lrem(jlong y, jlong x);
101 
102   // float and double remainder
103   static jfloat  frem(jfloat  x, jfloat  y);
104   static jdouble drem(jdouble x, jdouble y);
105 
106 

297   // in order to correctly free the result.
298   //
299   static char* generate_class_cast_message(JavaThread* thr, Klass* caster_klass);
300 
301   // Fill in the "X cannot be cast to a Y" message for ClassCastException
302   //
303   // @param caster_klass the class of the object we are casting
304   // @param target_klass the target klass attempt
305   // @return the dynamically allocated exception message (must be freed
306   // by the caller using a resource mark)
307   //
308   // This version does not require access the frame, so it can be called
309   // from interpreted code
310   // The caller (or one of it's callers) must use a ResourceMark
311   // in order to correctly free the result.
312   //
313   static char* generate_class_cast_message(Klass* caster_klass, Klass* target_klass, Symbol* target_klass_name = NULL);
314 
315   // Resolves a call site- may patch in the destination of the call into the
316   // compiled code.
317   static methodHandle resolve_helper(bool is_virtual, bool is_optimized, TRAPS);
318 
319  private:
320   // deopt blob
321   static void generate_deopt_blob(void);
322 
323   static bool handle_ic_miss_helper_internal(Handle receiver, CompiledMethod* caller_nm, const frame& caller_frame,
324                                              methodHandle callee_method, Bytecodes::Code bc, CallInfo& call_info,
325                                              bool& needs_ic_stub_refill, TRAPS);
326 
327  public:
328   static DeoptimizationBlob* deopt_blob(void)      { return _deopt_blob; }
329 
330   // Resets a call-site in compiled code so it will get resolved again.
331   static methodHandle reresolve_call_site(TRAPS);
332 
333   // In the code prolog, if the klass comparison fails, the inline cache
334   // misses and the call site is patched to megamorphic
335   static methodHandle handle_ic_miss_helper(TRAPS);
336 
337   // Find the method that called us.
338   static methodHandle find_callee_method(TRAPS);
339 
340   static void monitor_enter_helper(oopDesc* obj, BasicLock* lock, JavaThread* thread);
341 
342   static void monitor_exit_helper(oopDesc* obj, BasicLock* lock, JavaThread* current);
343 













344  private:
345   static Handle find_callee_info(Bytecodes::Code& bc, CallInfo& callinfo, TRAPS);
346   static Handle find_callee_info_helper(vframeStream& vfst, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS);
347 
348   static Method* extract_attached_method(vframeStream& vfst);
349 
350 #if defined(X86) && defined(COMPILER1)
351   // For Object.hashCode, System.identityHashCode try to pull hashCode from object header if available.
352   static void inline_check_hashcode_from_object_header(MacroAssembler* masm, const methodHandle& method, Register obj_reg, Register result);
353 #endif // X86 && COMPILER1
354 
355  public:
356 
357   // Read the array of BasicTypes from a Java signature, and compute where
358   // compiled Java code would like to put the results.  Values in reg_lo and
359   // reg_hi refer to 4-byte quantities.  Values less than SharedInfo::stack0 are
360   // registers, those above refer to 4-byte stack slots.  All stack slots are
361   // based off of the window top.  SharedInfo::stack0 refers to the first usable
362   // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
363   // 4-bytes higher.
364   // return value is the maximum number of VMReg stack slots the convention will use.
365   static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed);








366 
367   static void check_member_name_argument_is_last_argument(const methodHandle& method,
368                                                           const BasicType* sig_bt,
369                                                           const VMRegPair* regs) NOT_DEBUG_RETURN;
370 
371   // Ditto except for calling C
372   //
373   // C argument in register AND stack slot.
374   // Some architectures require that an argument must be passed in a register
375   // AND in a stack slot. These architectures provide a second VMRegPair array
376   // to be filled by the c_calling_convention method. On other architectures,
377   // NULL is being passed as the second VMRegPair array, so arguments are either
378   // passed in a register OR in a stack slot.
379   static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2,
380                                   int total_args_passed);
381 
382   static int vector_calling_convention(VMRegPair *regs,
383                                        uint num_bits,
384                                        uint total_args_passed);
385 

395   // by the time we reach the blob there is compiled code available. This allows
396   // the blob to pass the incoming stack pointer (the sender sp) in a known
397   // location for the interpreter to record. This is used by the frame code
398   // to correct the sender code to match up with the stack pointer when the
399   // thread left the compiled code. In addition it allows the interpreter
400   // to remove the space the c2i adapter allocated to do its argument conversion.
401 
402   // Although a c2i blob will always run interpreted even if compiled code is
403   // present if we see that compiled code is present the compiled call site
404   // will be patched/re-resolved so that later calls will run compiled.
405 
406   // Additionally a c2i blob need to have a unverified entry because it can be reached
407   // in situations where the call site is an inlined cache site and may go megamorphic.
408 
409   // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
410   // that the interpreter before it does any call dispatch will record the current
411   // stack pointer in the interpreter frame. On return it will restore the stack
412   // pointer as needed. This means the i2c adapter code doesn't need any special
413   // handshaking path with compiled code to keep the stack walking correct.
414 
415   static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
416                                                       int total_args_passed,
417                                                       int max_arg,
418                                                       const BasicType *sig_bt,
419                                                       const VMRegPair *regs,
420                                                       AdapterFingerPrint* fingerprint);





421 
422   static void gen_i2c_adapter(MacroAssembler *_masm,
423                               int total_args_passed,
424                               int comp_args_on_stack,
425                               const BasicType *sig_bt,
426                               const VMRegPair *regs);
427 
428   // OSR support
429 
430   // OSR_migration_begin will extract the jvm state from an interpreter
431   // frame (locals, monitors) and store the data in a piece of C heap
432   // storage. This then allows the interpreter frame to be removed from the
433   // stack and the OSR nmethod to be called. That method is called with a
434   // pointer to the C heap storage. This pointer is the return value from
435   // OSR_migration_begin.
436 
437   static intptr_t* OSR_migration_begin(JavaThread *thread);
438 
439   // OSR_migration_end is a trivial routine. It is called after the compiled
440   // method has extracted the jvm state from the C heap that OSR_migration_begin
441   // created. It's entire job is to simply free this storage.
442   static void OSR_migration_end(intptr_t* buf);
443 
444   // Convert a sig into a calling convention register layout
445   // and find interesting things about it.

480                                           int compile_id,
481                                           BasicType* sig_bt,
482                                           VMRegPair* regs,
483                                           BasicType ret_type,
484                                           address critical_entry);
485 
486   // A compiled caller has just called the interpreter, but compiled code
487   // exists.  Patch the caller so he no longer calls into the interpreter.
488   static void fixup_callers_callsite(Method* moop, address ret_pc);
489   static bool should_fixup_call_destination(address destination, address entry_point, address caller_pc, Method* moop, CodeBlob* cb);
490 
491   // Slow-path Locking and Unlocking
492   static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current);
493   static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock, JavaThread* current);
494 
495   // Resolving of calls
496   static address resolve_static_call_C     (JavaThread* current);
497   static address resolve_virtual_call_C    (JavaThread* current);
498   static address resolve_opt_virtual_call_C(JavaThread* current);
499 



500   // arraycopy, the non-leaf version.  (See StubRoutines for all the leaf calls.)
501   static void slow_arraycopy_C(oopDesc* src,  jint src_pos,
502                                oopDesc* dest, jint dest_pos,
503                                jint length, JavaThread* thread);
504 
505   // handle ic miss with caller being compiled code
506   // wrong method handling (inline cache misses, zombie methods)
507   static address handle_wrong_method(JavaThread* current);
508   static address handle_wrong_method_abstract(JavaThread* current);
509   static address handle_wrong_method_ic_miss(JavaThread* current);


510 
511   static address handle_unsafe_access(JavaThread* thread, address next_pc);
512 

513 #ifdef COMPILER2
514   static RuntimeStub* make_native_invoker(address call_target,
515                                           int shadow_space_bytes,
516                                           const GrowableArray<VMReg>& input_registers,
517                                           const GrowableArray<VMReg>& output_registers);
518 #endif
519 
520   static void compute_move_order(const BasicType* in_sig_bt,
521                                  int total_in_args, const VMRegPair* in_regs,
522                                  int total_out_args, VMRegPair* out_regs,
523                                  GrowableArray<int>& arg_order,
524                                  VMRegPair tmp_vmreg);
525 
526 #ifndef PRODUCT
527 
528   // Collect and print inline cache miss statistics
529  private:
530   enum { maxICmiss_count = 100 };
531   static int     _ICmiss_index;                  // length of IC miss histogram
532   static int     _ICmiss_count[maxICmiss_count]; // miss counts

618 // setup.  Compiled frames are fixed-size and the args are likely not in the
619 // right place.  Hence all the args will likely be copied into the
620 // interpreter's frame, forcing that frame to grow.  The compiled frame's
621 // outgoing stack args will be dead after the copy.
622 //
623 // Native wrappers, like adapters, marshal arguments.  Unlike adapters they
624 // also perform an official frame push & pop.  They have a call to the native
625 // routine in their middles and end in a return (instead of ending in a jump).
626 // The native wrappers are stored in real nmethods instead of the BufferBlobs
627 // used by the adapters.  The code generation happens here because it's very
628 // similar to what the adapters have to do.
629 
630 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> {
631   friend class AdapterHandlerTable;
632   friend class AdapterHandlerLibrary;
633 
634  private:
635   AdapterFingerPrint* _fingerprint;
636   address _i2c_entry;
637   address _c2i_entry;


638   address _c2i_unverified_entry;

639   address _c2i_no_clinit_check_entry;
640 



641 #ifdef ASSERT
642   // Captures code and signature used to generate this adapter when
643   // verifying adapter equivalence.
644   unsigned char* _saved_code;
645   int            _saved_code_length;
646 #endif
647 
648   void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry, address c2i_no_clinit_check_entry) {

649     _fingerprint = fingerprint;
650     _i2c_entry = i2c_entry;
651     _c2i_entry = c2i_entry;


652     _c2i_unverified_entry = c2i_unverified_entry;

653     _c2i_no_clinit_check_entry = c2i_no_clinit_check_entry;

654 #ifdef ASSERT
655     _saved_code_length = 0;
656 #endif
657   }
658 
659   void deallocate();
660 
661   // should never be used
662   AdapterHandlerEntry();
663 
664  public:
665   address get_i2c_entry()                  const { return _i2c_entry; }
666   address get_c2i_entry()                  const { return _c2i_entry; }
667   address get_c2i_unverified_entry()       const { return _c2i_unverified_entry; }
668   address get_c2i_no_clinit_check_entry()  const { return _c2i_no_clinit_check_entry; }



669 
670   address base_address();
671   void relocate(address new_base);
672 




673   AdapterFingerPrint* fingerprint() const { return _fingerprint; }
674 
675   AdapterHandlerEntry* next() {
676     return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next();
677   }
678 
679 #ifdef ASSERT
680   // Used to verify that code generated for shared adapters is equivalent
681   void save_code   (unsigned char* code, int length);
682   bool compare_code(AdapterHandlerEntry* other);
683 #endif
684 
685   //virtual void print_on(outputStream* st) const;  DO NOT USE
686   void print_adapter_on(outputStream* st) const;
687 };
688 


689 class AdapterHandlerLibrary: public AllStatic {
690   friend class SharedRuntime;
691  private:
692   static BufferBlob* _buffer; // the temporary code buffer in CodeCache
693   static AdapterHandlerTable* _adapters;
694   static AdapterHandlerEntry* _abstract_method_handler;
695   static AdapterHandlerEntry* _no_arg_handler;
696   static AdapterHandlerEntry* _int_arg_handler;
697   static AdapterHandlerEntry* _obj_arg_handler;
698   static AdapterHandlerEntry* _obj_int_arg_handler;
699   static AdapterHandlerEntry* _obj_obj_arg_handler;
700 
701   static BufferBlob* buffer_blob();
702   static void initialize();
703   static AdapterHandlerEntry* create_adapter(AdapterBlob*& new_adapter,
704                                              int total_args_passed,
705                                              BasicType* sig_bt,
706                                              bool allocate_code_blob);
707   static AdapterHandlerEntry* get_simple_adapter(const methodHandle& method);
708  public:
709 
710   static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint,
711                                         address i2c_entry,
712                                         address c2i_entry,
713                                         address c2i_unverified_entry,
714                                         address c2i_no_clinit_check_entry = NULL);
715   static void create_native_wrapper(const methodHandle& method);
716   static AdapterHandlerEntry* get_adapter(const methodHandle& method);
717 
718   static void print_handler(const CodeBlob* b) { print_handler_on(tty, b); }
719   static void print_handler_on(outputStream* st, const CodeBlob* b);
720   static bool contains(const CodeBlob* b);
721 #ifndef PRODUCT
722   static void print_statistics();
723 #endif // PRODUCT
724 
725 };
726 



























































727 #endif // SHARE_RUNTIME_SHAREDRUNTIME_HPP

  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_RUNTIME_SHAREDRUNTIME_HPP
 26 #define SHARE_RUNTIME_SHAREDRUNTIME_HPP
 27 
 28 #include "asm/codeBuffer.hpp"
 29 #include "code/codeBlob.hpp"
 30 #include "code/vmreg.hpp"
 31 #include "interpreter/bytecodeTracer.hpp"
 32 #include "interpreter/linkResolver.hpp"
 33 #include "memory/allocation.hpp"
 34 #include "memory/resourceArea.hpp"
 35 #include "runtime/signature.hpp"
 36 #include "utilities/hashtable.hpp"
 37 #include "utilities/macros.hpp"
 38 
 39 class AdapterHandlerEntry;
 40 class AdapterHandlerTable;
 41 class AdapterFingerPrint;
 42 class vframeStream;
 43 class SigEntry;
 44 
 45 // Runtime is the base class for various runtime interfaces
 46 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
 47 // shared functionality such as exception forwarding (C++ to
 48 // Java exceptions), locking/unlocking mechanisms, statistical
 49 // information, etc.
 50 
 51 class SharedRuntime: AllStatic {
 52   friend class VMStructs;
 53 
 54  private:
 55   static bool resolve_sub_helper_internal(methodHandle callee_method, const frame& caller_frame,
 56                                           CompiledMethod* caller_nm, bool is_virtual, bool is_optimized,
 57                                           Handle receiver, CallInfo& call_info, Bytecodes::Code invoke_code, TRAPS);
 58   static methodHandle resolve_sub_helper(bool is_virtual, bool is_optimized, bool* caller_is_c1, TRAPS);
 59 
 60   // Shared stub locations
 61 
 62   static RuntimeStub*        _wrong_method_blob;
 63   static RuntimeStub*        _wrong_method_abstract_blob;
 64   static RuntimeStub*        _ic_miss_blob;
 65   static RuntimeStub*        _resolve_opt_virtual_call_blob;
 66   static RuntimeStub*        _resolve_virtual_call_blob;
 67   static RuntimeStub*        _resolve_static_call_blob;

 68 
 69   static DeoptimizationBlob* _deopt_blob;
 70 
 71   static SafepointBlob*      _polling_page_vectors_safepoint_handler_blob;
 72   static SafepointBlob*      _polling_page_safepoint_handler_blob;
 73   static SafepointBlob*      _polling_page_return_handler_blob;
 74 
 75 #ifdef COMPILER2
 76   static UncommonTrapBlob*   _uncommon_trap_blob;
 77 #endif // COMPILER2
 78 
 79 #ifndef PRODUCT
 80   // Counters
 81   static int64_t _nof_megamorphic_calls;         // total # of megamorphic calls (through vtable)
 82 #endif // !PRODUCT
 83 
 84  private:
 85   enum { POLL_AT_RETURN,  POLL_AT_LOOP, POLL_AT_VECTOR_LOOP };
 86   static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type);
 87   static RuntimeStub*   generate_resolve_blob(address destination, const char* name);

 88  public:
 89   static void generate_stubs(void);
 90 
 91   // max bytes for each dtrace string parameter
 92   enum { max_dtrace_string_size = 256 };
 93 
 94   // The following arithmetic routines are used on platforms that do
 95   // not have machine instructions to implement their functionality.
 96   // Do not remove these.
 97 
 98   // long arithmetics
 99   static jlong   lmul(jlong y, jlong x);
100   static jlong   ldiv(jlong y, jlong x);
101   static jlong   lrem(jlong y, jlong x);
102 
103   // float and double remainder
104   static jfloat  frem(jfloat  x, jfloat  y);
105   static jdouble drem(jdouble x, jdouble y);
106 
107 

298   // in order to correctly free the result.
299   //
300   static char* generate_class_cast_message(JavaThread* thr, Klass* caster_klass);
301 
302   // Fill in the "X cannot be cast to a Y" message for ClassCastException
303   //
304   // @param caster_klass the class of the object we are casting
305   // @param target_klass the target klass attempt
306   // @return the dynamically allocated exception message (must be freed
307   // by the caller using a resource mark)
308   //
309   // This version does not require access the frame, so it can be called
310   // from interpreted code
311   // The caller (or one of it's callers) must use a ResourceMark
312   // in order to correctly free the result.
313   //
314   static char* generate_class_cast_message(Klass* caster_klass, Klass* target_klass, Symbol* target_klass_name = NULL);
315 
316   // Resolves a call site- may patch in the destination of the call into the
317   // compiled code.
318   static methodHandle resolve_helper(bool is_virtual, bool is_optimized, bool* caller_is_c1, TRAPS);
319 
320  private:
321   // deopt blob
322   static void generate_deopt_blob(void);
323 
324   static bool handle_ic_miss_helper_internal(Handle receiver, CompiledMethod* caller_nm, const frame& caller_frame,
325                                              methodHandle callee_method, Bytecodes::Code bc, CallInfo& call_info,
326                                              bool& needs_ic_stub_refill, bool& is_optimized, bool caller_is_c1, TRAPS);
327 
328  public:
329   static DeoptimizationBlob* deopt_blob(void)      { return _deopt_blob; }
330 
331   // Resets a call-site in compiled code so it will get resolved again.
332   static methodHandle reresolve_call_site(bool& is_static_call, bool& is_optimized, bool& caller_is_c1, TRAPS);
333 
334   // In the code prolog, if the klass comparison fails, the inline cache
335   // misses and the call site is patched to megamorphic
336   static methodHandle handle_ic_miss_helper(bool& is_optimized, bool& caller_is_c1, TRAPS);
337 
338   // Find the method that called us.
339   static methodHandle find_callee_method(TRAPS);
340 
341   static void monitor_enter_helper(oopDesc* obj, BasicLock* lock, JavaThread* thread);
342 
343   static void monitor_exit_helper(oopDesc* obj, BasicLock* lock, JavaThread* current);
344 
345   static address entry_for_handle_wrong_method(methodHandle callee_method, bool is_static_call, bool is_optimized, bool caller_is_c1) {
346     assert(callee_method->verified_code_entry() != NULL, "Jump to zero!");
347     assert(callee_method->verified_inline_code_entry() != NULL, "Jump to zero!");
348     assert(callee_method->verified_inline_ro_code_entry() != NULL, "Jump to zero!");
349     if (caller_is_c1) {
350       return callee_method->verified_inline_code_entry();
351     } else if (is_static_call || is_optimized) {
352       return callee_method->verified_code_entry();
353     } else {
354       return callee_method->verified_inline_ro_code_entry();
355     }
356   }
357 
358  private:
359   static Handle find_callee_info(Bytecodes::Code& bc, CallInfo& callinfo, TRAPS);
360   static Handle find_callee_info_helper(vframeStream& vfst, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS);
361 
362   static Method* extract_attached_method(vframeStream& vfst);
363 
364 #if defined(X86) && defined(COMPILER1)
365   // For Object.hashCode, System.identityHashCode try to pull hashCode from object header if available.
366   static void inline_check_hashcode_from_object_header(MacroAssembler* masm, const methodHandle& method, Register obj_reg, Register result);
367 #endif // X86 && COMPILER1
368 
369  public:
370 
371   // Read the array of BasicTypes from a Java signature, and compute where
372   // compiled Java code would like to put the results.  Values in reg_lo and
373   // reg_hi refer to 4-byte quantities.  Values less than SharedInfo::stack0 are
374   // registers, those above refer to 4-byte stack slots.  All stack slots are
375   // based off of the window top.  SharedInfo::stack0 refers to the first usable
376   // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
377   // 4-bytes higher.
378   // return value is the maximum number of VMReg stack slots the convention will use.
379   static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed);
380   static int java_calling_convention(const GrowableArray<SigEntry>* sig, VMRegPair* regs) {
381     BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sig->length());
382     int total_args_passed = SigEntry::fill_sig_bt(sig, sig_bt);
383     return java_calling_convention(sig_bt, regs, total_args_passed);
384   }
385   static int java_return_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed);
386   static const uint java_return_convention_max_int;
387   static const uint java_return_convention_max_float;
388 
389   static void check_member_name_argument_is_last_argument(const methodHandle& method,
390                                                           const BasicType* sig_bt,
391                                                           const VMRegPair* regs) NOT_DEBUG_RETURN;
392 
393   // Ditto except for calling C
394   //
395   // C argument in register AND stack slot.
396   // Some architectures require that an argument must be passed in a register
397   // AND in a stack slot. These architectures provide a second VMRegPair array
398   // to be filled by the c_calling_convention method. On other architectures,
399   // NULL is being passed as the second VMRegPair array, so arguments are either
400   // passed in a register OR in a stack slot.
401   static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2,
402                                   int total_args_passed);
403 
404   static int vector_calling_convention(VMRegPair *regs,
405                                        uint num_bits,
406                                        uint total_args_passed);
407 

417   // by the time we reach the blob there is compiled code available. This allows
418   // the blob to pass the incoming stack pointer (the sender sp) in a known
419   // location for the interpreter to record. This is used by the frame code
420   // to correct the sender code to match up with the stack pointer when the
421   // thread left the compiled code. In addition it allows the interpreter
422   // to remove the space the c2i adapter allocated to do its argument conversion.
423 
424   // Although a c2i blob will always run interpreted even if compiled code is
425   // present if we see that compiled code is present the compiled call site
426   // will be patched/re-resolved so that later calls will run compiled.
427 
428   // Additionally a c2i blob need to have a unverified entry because it can be reached
429   // in situations where the call site is an inlined cache site and may go megamorphic.
430 
431   // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
432   // that the interpreter before it does any call dispatch will record the current
433   // stack pointer in the interpreter frame. On return it will restore the stack
434   // pointer as needed. This means the i2c adapter code doesn't need any special
435   // handshaking path with compiled code to keep the stack walking correct.
436 
437   static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *masm,
438                                                       int comp_args_on_stack,
439                                                       const GrowableArray<SigEntry>* sig,
440                                                       const VMRegPair* regs,
441                                                       const GrowableArray<SigEntry>* sig_cc,
442                                                       const VMRegPair* regs_cc,
443                                                       const GrowableArray<SigEntry>* sig_cc_ro,
444                                                       const VMRegPair* regs_cc_ro,
445                                                       AdapterFingerPrint* fingerprint,
446                                                       AdapterBlob*& new_adapter,
447                                                       bool allocate_code_blob);
448 
449   static void gen_i2c_adapter(MacroAssembler *_masm,

450                               int comp_args_on_stack,
451                               const GrowableArray<SigEntry>* sig,
452                               const VMRegPair *regs);
453 
454   // OSR support
455 
456   // OSR_migration_begin will extract the jvm state from an interpreter
457   // frame (locals, monitors) and store the data in a piece of C heap
458   // storage. This then allows the interpreter frame to be removed from the
459   // stack and the OSR nmethod to be called. That method is called with a
460   // pointer to the C heap storage. This pointer is the return value from
461   // OSR_migration_begin.
462 
463   static intptr_t* OSR_migration_begin(JavaThread *thread);
464 
465   // OSR_migration_end is a trivial routine. It is called after the compiled
466   // method has extracted the jvm state from the C heap that OSR_migration_begin
467   // created. It's entire job is to simply free this storage.
468   static void OSR_migration_end(intptr_t* buf);
469 
470   // Convert a sig into a calling convention register layout
471   // and find interesting things about it.

506                                           int compile_id,
507                                           BasicType* sig_bt,
508                                           VMRegPair* regs,
509                                           BasicType ret_type,
510                                           address critical_entry);
511 
512   // A compiled caller has just called the interpreter, but compiled code
513   // exists.  Patch the caller so he no longer calls into the interpreter.
514   static void fixup_callers_callsite(Method* moop, address ret_pc);
515   static bool should_fixup_call_destination(address destination, address entry_point, address caller_pc, Method* moop, CodeBlob* cb);
516 
517   // Slow-path Locking and Unlocking
518   static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current);
519   static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock, JavaThread* current);
520 
521   // Resolving of calls
522   static address resolve_static_call_C     (JavaThread* current);
523   static address resolve_virtual_call_C    (JavaThread* current);
524   static address resolve_opt_virtual_call_C(JavaThread* current);
525 
526   static void load_inline_type_fields_in_regs(JavaThread* current, oopDesc* res);
527   static void store_inline_type_fields_to_buf(JavaThread* current, intptr_t res);
528 
529   // arraycopy, the non-leaf version.  (See StubRoutines for all the leaf calls.)
530   static void slow_arraycopy_C(oopDesc* src,  jint src_pos,
531                                oopDesc* dest, jint dest_pos,
532                                jint length, JavaThread* thread);
533 
534   // handle ic miss with caller being compiled code
535   // wrong method handling (inline cache misses, zombie methods)
536   static address handle_wrong_method(JavaThread* current);
537   static address handle_wrong_method_abstract(JavaThread* current);
538   static address handle_wrong_method_ic_miss(JavaThread* current);
539   static void allocate_inline_types(JavaThread* current, Method* callee, bool allocate_receiver);
540   static oop allocate_inline_types_impl(JavaThread* current, methodHandle callee, bool allocate_receiver, TRAPS);
541 
542   static address handle_unsafe_access(JavaThread* thread, address next_pc);
543 
544   static BufferedInlineTypeBlob* generate_buffered_inline_type_adapter(const InlineKlass* vk);
545 #ifdef COMPILER2
546   static RuntimeStub* make_native_invoker(address call_target,
547                                           int shadow_space_bytes,
548                                           const GrowableArray<VMReg>& input_registers,
549                                           const GrowableArray<VMReg>& output_registers);
550 #endif
551 
552   static void compute_move_order(const BasicType* in_sig_bt,
553                                  int total_in_args, const VMRegPair* in_regs,
554                                  int total_out_args, VMRegPair* out_regs,
555                                  GrowableArray<int>& arg_order,
556                                  VMRegPair tmp_vmreg);
557 
558 #ifndef PRODUCT
559 
560   // Collect and print inline cache miss statistics
561  private:
562   enum { maxICmiss_count = 100 };
563   static int     _ICmiss_index;                  // length of IC miss histogram
564   static int     _ICmiss_count[maxICmiss_count]; // miss counts

650 // setup.  Compiled frames are fixed-size and the args are likely not in the
651 // right place.  Hence all the args will likely be copied into the
652 // interpreter's frame, forcing that frame to grow.  The compiled frame's
653 // outgoing stack args will be dead after the copy.
654 //
655 // Native wrappers, like adapters, marshal arguments.  Unlike adapters they
656 // also perform an official frame push & pop.  They have a call to the native
657 // routine in their middles and end in a return (instead of ending in a jump).
658 // The native wrappers are stored in real nmethods instead of the BufferBlobs
659 // used by the adapters.  The code generation happens here because it's very
660 // similar to what the adapters have to do.
661 
662 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> {
663   friend class AdapterHandlerTable;
664   friend class AdapterHandlerLibrary;
665 
666  private:
667   AdapterFingerPrint* _fingerprint;
668   address _i2c_entry;
669   address _c2i_entry;
670   address _c2i_inline_entry;
671   address _c2i_inline_ro_entry;
672   address _c2i_unverified_entry;
673   address _c2i_unverified_inline_entry;
674   address _c2i_no_clinit_check_entry;
675 
676   // Support for scalarized inline type calling convention
677   const GrowableArray<SigEntry>* _sig_cc;
678 
679 #ifdef ASSERT
680   // Captures code and signature used to generate this adapter when
681   // verifying adapter equivalence.
682   unsigned char* _saved_code;
683   int            _saved_code_length;
684 #endif
685 
686   void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_inline_entry,
687             address c2i_inline_ro_entry, address c2i_unverified_entry, address c2i_unverified_inline_entry, address c2i_no_clinit_check_entry) {
688     _fingerprint = fingerprint;
689     _i2c_entry = i2c_entry;
690     _c2i_entry = c2i_entry;
691     _c2i_inline_entry = c2i_inline_entry;
692     _c2i_inline_ro_entry = c2i_inline_ro_entry;
693     _c2i_unverified_entry = c2i_unverified_entry;
694     _c2i_unverified_inline_entry = c2i_unverified_inline_entry;
695     _c2i_no_clinit_check_entry = c2i_no_clinit_check_entry;
696     _sig_cc = NULL;
697 #ifdef ASSERT
698     _saved_code_length = 0;
699 #endif
700   }
701 
702   void deallocate();
703 
704   // should never be used
705   AdapterHandlerEntry();
706 
707  public:
708   address get_i2c_entry()                   const { return _i2c_entry; }
709   address get_c2i_entry()                   const { return _c2i_entry; }
710   address get_c2i_inline_entry()            const { return _c2i_inline_entry; }
711   address get_c2i_inline_ro_entry()         const { return _c2i_inline_ro_entry; }
712   address get_c2i_unverified_entry()        const { return _c2i_unverified_entry; }
713   address get_c2i_unverified_inline_entry() const { return _c2i_unverified_inline_entry; }
714   address get_c2i_no_clinit_check_entry()   const { return _c2i_no_clinit_check_entry; }
715 
716   address base_address();
717   void relocate(address new_base);
718 
719   // Support for scalarized inline type calling convention
720   void set_sig_cc(const GrowableArray<SigEntry>* sig)  { _sig_cc = sig; }
721   const GrowableArray<SigEntry>* get_sig_cc()    const { return _sig_cc; }
722 
723   AdapterFingerPrint* fingerprint() const { return _fingerprint; }
724 
725   AdapterHandlerEntry* next() {
726     return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next();
727   }
728 
729 #ifdef ASSERT
730   // Used to verify that code generated for shared adapters is equivalent
731   void save_code   (unsigned char* code, int length);
732   bool compare_code(AdapterHandlerEntry* other);
733 #endif
734 
735   //virtual void print_on(outputStream* st) const;  DO NOT USE
736   void print_adapter_on(outputStream* st) const;
737 };
738 
739 class CompiledEntrySignature;
740 
741 class AdapterHandlerLibrary: public AllStatic {
742   friend class SharedRuntime;
743  private:
744   static BufferBlob* _buffer; // the temporary code buffer in CodeCache
745   static AdapterHandlerTable* _adapters;
746   static AdapterHandlerEntry* _abstract_method_handler;
747   static AdapterHandlerEntry* _no_arg_handler;
748   static AdapterHandlerEntry* _int_arg_handler;
749   static AdapterHandlerEntry* _obj_arg_handler;
750   static AdapterHandlerEntry* _obj_int_arg_handler;
751   static AdapterHandlerEntry* _obj_obj_arg_handler;
752 
753   static BufferBlob* buffer_blob();
754   static void initialize();
755   static AdapterHandlerEntry* create_adapter(AdapterBlob*& new_adapter,
756                                              CompiledEntrySignature& ces,

757                                              bool allocate_code_blob);
758   static AdapterHandlerEntry* get_simple_adapter(const methodHandle& method);
759  public:
760 
761   static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint,
762                                         address i2c_entry, address c2i_entry, address c2i_inline_entry, address c2i_inline_ro_entry,
763                                         address c2i_unverified_entry, address c2i_unverified_inline_entry, address c2i_no_clinit_check_entry = NULL);


764   static void create_native_wrapper(const methodHandle& method);
765   static AdapterHandlerEntry* get_adapter(const methodHandle& method);
766 
767   static void print_handler(const CodeBlob* b) { print_handler_on(tty, b); }
768   static void print_handler_on(outputStream* st, const CodeBlob* b);
769   static bool contains(const CodeBlob* b);
770 #ifndef PRODUCT
771   static void print_statistics();
772 #endif // PRODUCT
773 
774 };
775 
776 // Utility class for computing the calling convention of the 3 types
777 // of compiled method entries:
778 //     Method::_from_compiled_entry               - sig_cc
779 //     Method::_from_compiled_inline_ro_entry     - sig_cc_ro
780 //     Method::_from_compiled_inline_entry        - sig
781 class CompiledEntrySignature : public StackObj {
782   Method* _method;
783   int  _num_inline_args;
784   bool _has_inline_recv;
785   GrowableArray<SigEntry> *_sig;
786   GrowableArray<SigEntry> *_sig_cc;
787   GrowableArray<SigEntry> *_sig_cc_ro;
788   VMRegPair* _regs;
789   VMRegPair* _regs_cc;
790   VMRegPair* _regs_cc_ro;
791 
792   int _args_on_stack;
793   int _args_on_stack_cc;
794   int _args_on_stack_cc_ro;
795 
796   bool _c1_needs_stack_repair;
797   bool _c2_needs_stack_repair;
798 
799 public:
800   Method* method()                     const { return _method; }
801 
802   // Used by Method::_from_compiled_inline_entry
803   GrowableArray<SigEntry>& sig()       const { return *_sig; }
804 
805   // Used by Method::_from_compiled_entry
806   GrowableArray<SigEntry>& sig_cc()    const { return *_sig_cc; }
807 
808   // Used by Method::_from_compiled_inline_ro_entry
809   GrowableArray<SigEntry>& sig_cc_ro() const { return *_sig_cc_ro; }
810 
811   VMRegPair* regs()                    const { return _regs; }
812   VMRegPair* regs_cc()                 const { return _regs_cc; }
813   VMRegPair* regs_cc_ro()              const { return _regs_cc_ro; }
814 
815   int args_on_stack()                  const { return _args_on_stack; }
816   int args_on_stack_cc()               const { return _args_on_stack_cc; }
817   int args_on_stack_cc_ro()            const { return _args_on_stack_cc_ro; }
818 
819   int  num_inline_args()               const { return _num_inline_args; }
820   bool has_inline_arg()                const { return _num_inline_args > 0; }
821   bool has_inline_recv()               const { return _has_inline_recv; }
822 
823   bool has_scalarized_args()           const { return _sig != _sig_cc; }
824   bool c1_needs_stack_repair()         const { return _c1_needs_stack_repair; }
825   bool c2_needs_stack_repair()         const { return _c2_needs_stack_repair; }
826   CodeOffsets::Entries c1_inline_ro_entry_type() const;
827 
828   CompiledEntrySignature(Method* method = NULL);
829   void compute_calling_conventions();
830 
831 private:
832   int compute_scalarized_cc(GrowableArray<SigEntry>*& sig_cc, VMRegPair*& regs_cc, bool scalar_receiver);
833 };
834 
835 #endif // SHARE_RUNTIME_SHAREDRUNTIME_HPP
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