jdk8-mips64-public/hotspot: src/share/vm/code/codeBlob.hpp@1d7922586cf6

7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>

     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  */

    25 #ifndef SHARE_VM_CODE_CODEBLOB_HPP

    26 #define SHARE_VM_CODE_CODEBLOB_HPP

    28 #include "asm/codeBuffer.hpp"

    29 #include "compiler/oopMap.hpp"

    30 #include "runtime/frame.hpp"

    31 #include "runtime/handles.hpp"

    33 // CodeBlob - superclass for all entries in the CodeCache.

    34 //

    35 // Suptypes are:

    36 //   nmethod            : Compiled Java methods (include method that calls to native code)

    37 //   RuntimeStub        : Call to VM runtime methods

    38 //   DeoptimizationBlob : Used for deoptimizatation

    39 //   ExceptionBlob      : Used for stack unrolling

    40 //   SafepointBlob      : Used to handle illegal instruction exceptions

    41 //

    42 //

    43 // Layout:

    44 //   - header

    45 //   - relocation

    46 //   - content space

    47 //     - instruction space

    48 //   - data space

    49 class DeoptimizationBlob;

    51 class CodeBlob VALUE_OBJ_CLASS_SPEC {

    53   friend class VMStructs;

    55  private:

    56   const char* _name;

    57   int        _size;                              // total size of CodeBlob in bytes

    58   int        _header_size;                       // size of header (depends on subclass)

    59   int        _relocation_size;                   // size of relocation

    60   int        _content_offset;                    // offset to where content region begins (this includes consts, insts, stubs)

    61   int        _code_offset;                       // offset to where instructions region begins (this includes insts, stubs)

    62   int        _frame_complete_offset;             // instruction offsets in [0.._frame_complete_offset) have

    63                                                  // not finished setting up their frame. Beware of pc's in

    64                                                  // that range. There is a similar range(s) on returns

    65                                                  // which we don't detect.

    66   int        _data_offset;                       // offset to where data region begins

    67   int        _frame_size;                        // size of stack frame

    68   OopMapSet* _oop_maps;                          // OopMap for this CodeBlob

    69   CodeComments _comments;

    71   friend class OopRecorder;

    73  public:

    74   // Returns the space needed for CodeBlob

    75   static unsigned int allocation_size(CodeBuffer* cb, int header_size);

    77   // Creation

    78   // a) simple CodeBlob

    79   // frame_complete is the offset from the beginning of the instructions

    80   // to where the frame setup (from stackwalk viewpoint) is complete.

    81   CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size);

    83   // b) full CodeBlob

    84   CodeBlob(

    85     const char* name,

    86     CodeBuffer* cb,

    87     int         header_size,

    88     int         size,

    89     int         frame_complete,

    90     int         frame_size,

    91     OopMapSet*  oop_maps

    92   );

    94   // Deletion

    95   void flush();

    97   // Typing

    98   virtual bool is_buffer_blob() const            { return false; }

    99   virtual bool is_nmethod() const                { return false; }

   100   virtual bool is_runtime_stub() const           { return false; }

   101   virtual bool is_deoptimization_stub() const    { return false; }

   102   virtual bool is_uncommon_trap_stub() const     { return false; }

   103   virtual bool is_exception_stub() const         { return false; }

   104   virtual bool is_safepoint_stub() const              { return false; }

   105   virtual bool is_adapter_blob() const                { return false; }

   106   virtual bool is_method_handles_adapter_blob() const { return false; }

   108   virtual bool is_compiled_by_c2() const         { return false; }

   109   virtual bool is_compiled_by_c1() const         { return false; }

   111   // Casting

   112   nmethod* as_nmethod_or_null()                  { return is_nmethod() ? (nmethod*) this : NULL; }

   114   // Boundaries

   115   address    header_begin() const                { return (address)    this; }

   116   address    header_end() const                  { return ((address)   this) + _header_size; };

   117   relocInfo* relocation_begin() const            { return (relocInfo*) header_end(); };

   118   relocInfo* relocation_end() const              { return (relocInfo*)(header_end()   + _relocation_size); }

   119   address    content_begin() const               { return (address)    header_begin() + _content_offset; }

   120   address    content_end() const                 { return (address)    header_begin() + _data_offset; }

   121   address    code_begin() const                  { return (address)    header_begin() + _code_offset; }

   122   address    code_end() const                    { return (address)    header_begin() + _data_offset; }

   123   address    data_begin() const                  { return (address)    header_begin() + _data_offset; }

   124   address    data_end() const                    { return (address)    header_begin() + _size; }

   126   // Offsets

   127   int relocation_offset() const                  { return _header_size; }

   128   int content_offset() const                     { return _content_offset; }

   129   int code_offset() const                        { return _code_offset; }

   130   int data_offset() const                        { return _data_offset; }

   132   // Sizes

   133   int size() const                               { return _size; }

   134   int header_size() const                        { return _header_size; }

   135   int relocation_size() const                    { return (address) relocation_end() - (address) relocation_begin(); }

   136   int content_size() const                       { return           content_end()    -           content_begin();    }

   137   int code_size() const                          { return           code_end()       -           code_begin();       }

   138   int data_size() const                          { return           data_end()       -           data_begin();       }

   140   // Containment

   141   bool blob_contains(address addr) const         { return header_begin()       <= addr && addr < data_end();       }

   142   bool relocation_contains(relocInfo* addr) const{ return relocation_begin()   <= addr && addr < relocation_end(); }

   143   bool content_contains(address addr) const      { return content_begin()      <= addr && addr < content_end();    }

   144   bool code_contains(address addr) const         { return code_begin()         <= addr && addr < code_end();       }

   145   bool data_contains(address addr) const         { return data_begin()         <= addr && addr < data_end();       }

   146   bool contains(address addr) const              { return content_contains(addr); }

   147   bool is_frame_complete_at(address addr) const  { return code_contains(addr) &&

   148                                                           addr >= code_begin() + _frame_complete_offset; }

   150   // CodeCache support: really only used by the nmethods, but in order to get

   151   // asserts and certain bookkeeping to work in the CodeCache they are defined

   152   // virtual here.

   153   virtual bool is_zombie() const                 { return false; }

   154   virtual bool is_locked_by_vm() const           { return false; }

   156   virtual bool is_unloaded() const               { return false; }

   157   virtual bool is_not_entrant() const            { return false; }

   159   // GC support

   160   virtual bool is_alive() const                  = 0;

   162   // OopMap for frame

   163   OopMapSet* oop_maps() const                    { return _oop_maps; }

   164   void set_oop_maps(OopMapSet* p);

   165   OopMap* oop_map_for_return_address(address return_address);

   166   virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { ShouldNotReachHere(); }

   168   // Frame support

   169   int  frame_size() const                        { return _frame_size; }

   170   void set_frame_size(int size)                  { _frame_size = size; }

   172   // Returns true, if the next frame is responsible for GC'ing oops passed as arguments

   173   virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; }

   175   // Naming

   176   const char* name() const                       { return _name; }

   177   void set_name(const char* name)                { _name = name; }

   179   // Debugging

   180   virtual void verify();

   181   void print() const                             { print_on(tty); }

   182   virtual void print_on(outputStream* st) const;

   183   virtual void print_value_on(outputStream* st) const;

   185   // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService.

   186   static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = "");

   188   // Print the comment associated with offset on stream, if there is one

   189   virtual void print_block_comment(outputStream* stream, address block_begin) {

   190     intptr_t offset = (intptr_t)(block_begin - code_begin());

   191     _comments.print_block_comment(stream, offset);

   192   }

   194   // Transfer ownership of comments to this CodeBlob

   195   void set_comments(CodeComments& comments) {

   196     _comments.assign(comments);

   197   }

   198 };

   201 //----------------------------------------------------------------------------------------------------

   202 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc.

   204 class BufferBlob: public CodeBlob {

   205   friend class VMStructs;

   206   friend class AdapterBlob;

   207   friend class MethodHandlesAdapterBlob;

   209  private:

   210   // Creation support

   211   BufferBlob(const char* name, int size);

   212   BufferBlob(const char* name, int size, CodeBuffer* cb);

   214   void* operator new(size_t s, unsigned size);

   216  public:

   217   // Creation

   218   static BufferBlob* create(const char* name, int buffer_size);

   219   static BufferBlob* create(const char* name, CodeBuffer* cb);

   221   static void free(BufferBlob* buf);

   223   // Typing

   224   virtual bool is_buffer_blob() const            { return true; }

   226   // GC/Verification support

   227   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   228   bool is_alive() const                          { return true; }

   230   void verify();

   231   void print_on(outputStream* st) const;

   232   void print_value_on(outputStream* st) const;

   233 };

   236 //----------------------------------------------------------------------------------------------------

   237 // AdapterBlob: used to hold C2I/I2C adapters

   239 class AdapterBlob: public BufferBlob {

   240 private:

   241   AdapterBlob(int size, CodeBuffer* cb);

   243 public:

   244   // Creation

   245   static AdapterBlob* create(CodeBuffer* cb);

   247   // Typing

   248   virtual bool is_adapter_blob() const { return true; }

   249 };

   252 //----------------------------------------------------------------------------------------------------

   253 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters

   255 class MethodHandlesAdapterBlob: public BufferBlob {

   256 private:

   257   MethodHandlesAdapterBlob(int size)                 : BufferBlob("MethodHandles adapters", size) {}

   258   MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {}

   260 public:

   261   // Creation

   262   static MethodHandlesAdapterBlob* create(int buffer_size);

   264   // Typing

   265   virtual bool is_method_handles_adapter_blob() const { return true; }

   266 };

   269 //----------------------------------------------------------------------------------------------------

   270 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine

   272 class RuntimeStub: public CodeBlob {

   273   friend class VMStructs;

   274  private:

   275   bool        _caller_must_gc_arguments;

   277   // Creation support

   278   RuntimeStub(

   279     const char* name,

   280     CodeBuffer* cb,

   281     int         size,

   282     int         frame_complete,

   283     int         frame_size,

   284     OopMapSet*  oop_maps,

   285     bool        caller_must_gc_arguments

   286   );

   288   void* operator new(size_t s, unsigned size);

   290  public:

   291   // Creation

   292   static RuntimeStub* new_runtime_stub(

   293     const char* stub_name,

   294     CodeBuffer* cb,

   295     int         frame_complete,

   296     int         frame_size,

   297     OopMapSet*  oop_maps,

   298     bool        caller_must_gc_arguments

   299   );

   301   // Typing

   302   bool is_runtime_stub() const                   { return true; }

   304   // GC support

   305   bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; }

   307   address entry_point()                          { return code_begin(); }

   309   // GC/Verification support

   310   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }

   311   bool is_alive() const                          { return true; }

   313   void verify();

   314   void print_on(outputStream* st) const;

   315   void print_value_on(outputStream* st) const;

   316 };

   319 //----------------------------------------------------------------------------------------------------

   320 // Super-class for all blobs that exist in only one instance. Implements default behaviour.

   322 class SingletonBlob: public CodeBlob {

   323   friend class VMStructs;

   325  protected:

   326   void* operator new(size_t s, unsigned size);

   328  public:

   329    SingletonBlob(

   330      const char* name,

   331      CodeBuffer* cb,

   332      int         header_size,

   333      int         size,

   334      int         frame_size,

   335      OopMapSet*  oop_maps

   336    )

   337    : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps)

   338   {};

   340   address entry_point()                          { return code_begin(); }

   342   bool is_alive() const                          { return true; }

   344   void verify(); // does nothing

   345   void print_on(outputStream* st) const;

   346   void print_value_on(outputStream* st) const;

   347 };

   350 //----------------------------------------------------------------------------------------------------

   351 // DeoptimizationBlob

   353 class DeoptimizationBlob: public SingletonBlob {

   354   friend class VMStructs;

   355  private:

   356   int _unpack_offset;

   357   int _unpack_with_exception;

   358   int _unpack_with_reexecution;

   360   int _unpack_with_exception_in_tls;

   362   // Creation support

   363   DeoptimizationBlob(

   364     CodeBuffer* cb,

   365     int         size,

   366     OopMapSet*  oop_maps,

   367     int         unpack_offset,

   368     int         unpack_with_exception_offset,

   369     int         unpack_with_reexecution_offset,

   370     int         frame_size

   371   );

   373  public:

   374   // Creation

   375   static DeoptimizationBlob* create(

   376     CodeBuffer* cb,

   377     OopMapSet*  oop_maps,

   378     int         unpack_offset,

   379     int         unpack_with_exception_offset,

   380     int         unpack_with_reexecution_offset,

   381     int         frame_size

   382   );

   384   // Typing

   385   bool is_deoptimization_stub() const { return true; }

   386   bool exception_address_is_unpack_entry(address pc) const {

   387     address unpack_pc = unpack();

   388     return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc);

   389   }

   394   // GC for args

   395   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ }

   397   // Printing

   398   void print_value_on(outputStream* st) const;

   400   address unpack() const                         { return code_begin() + _unpack_offset;           }

   401   address unpack_with_exception() const          { return code_begin() + _unpack_with_exception;   }

   402   address unpack_with_reexecution() const        { return code_begin() + _unpack_with_reexecution; }

   404   // Alternate entry point for C1 where the exception and issuing pc

   405   // are in JavaThread::_exception_oop and JavaThread::_exception_pc

   406   // instead of being in registers.  This is needed because C1 doesn't

   407   // model exception paths in a way that keeps these registers free so

   408   // there may be live values in those registers during deopt.

   409   void set_unpack_with_exception_in_tls_offset(int offset) {

   410     _unpack_with_exception_in_tls = offset;

   411     assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob");

   412   }

   413   address unpack_with_exception_in_tls() const   { return code_begin() + _unpack_with_exception_in_tls; }

   414 };

   417 //----------------------------------------------------------------------------------------------------

   418 // UncommonTrapBlob (currently only used by Compiler 2)

   420 #ifdef COMPILER2

   422 class UncommonTrapBlob: public SingletonBlob {

   423   friend class VMStructs;

   424  private:

   425   // Creation support

   426   UncommonTrapBlob(

   427     CodeBuffer* cb,

   428     int         size,

   429     OopMapSet*  oop_maps,

   430     int         frame_size

   431   );

   433  public:

   434   // Creation

   435   static UncommonTrapBlob* create(

   436     CodeBuffer* cb,

   437     OopMapSet*  oop_maps,

   438     int         frame_size

   439   );

   441   // GC for args

   442   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }

   444   // Typing

   445   bool is_uncommon_trap_stub() const             { return true; }

   446 };

   449 //----------------------------------------------------------------------------------------------------

   450 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2)

   452 class ExceptionBlob: public SingletonBlob {

   453   friend class VMStructs;

   454  private:

   455   // Creation support

   456   ExceptionBlob(

   457     CodeBuffer* cb,

   458     int         size,

   459     OopMapSet*  oop_maps,

   460     int         frame_size

   461   );

   463  public:

   464   // Creation

   465   static ExceptionBlob* create(

   466     CodeBuffer* cb,

   467     OopMapSet*  oop_maps,

   468     int         frame_size

   469   );

   471   // GC for args

   472   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   474   // Typing

   475   bool is_exception_stub() const                 { return true; }

   476 };

   477 #endif // COMPILER2

   480 //----------------------------------------------------------------------------------------------------

   481 // SafepointBlob: handles illegal_instruction exceptions during a safepoint

   483 class SafepointBlob: public SingletonBlob {

   484   friend class VMStructs;

   485  private:

   486   // Creation support

   487   SafepointBlob(

   488     CodeBuffer* cb,

   489     int         size,

   490     OopMapSet*  oop_maps,

   491     int         frame_size

   492   );

   494  public:

   495   // Creation

   496   static SafepointBlob* create(

   497     CodeBuffer* cb,

   498     OopMapSet*  oop_maps,

   499     int         frame_size

   500   );

   502   // GC for args

   503   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   505   // Typing

   506   bool is_safepoint_stub() const                 { return true; }

   507 };

   509 #endif // SHARE_VM_CODE_CODEBLOB_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/code/codeBlob.hpp@1d7922586cf6

src/share/vm/code/codeBlob.hpp