hotspot/src/share/vm/code/codeBlob.hpp
author rbackman
Tue, 26 Apr 2016 10:28:51 +0200
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permissions -rw-r--r--
8151956: Support non-continuous CodeBlobs in HotSpot Reviewed-by: iveresov, thartmann, simonis
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/*
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 * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_CODE_CODEBLOB_HPP
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#define SHARE_VM_CODE_CODEBLOB_HPP
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#include "asm/codeBuffer.hpp"
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#include "compiler/oopMap.hpp"
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#include "runtime/frame.hpp"
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#include "runtime/handles.hpp"
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// CodeBlob Types
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// Used in the CodeCache to assign CodeBlobs to different CodeHeaps
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struct CodeBlobType {
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  enum {
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    MethodNonProfiled   = 0,    // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)
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    MethodProfiled      = 1,    // Execution level 2 and 3 (profiled) nmethods
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    NonNMethod          = 2,    // Non-nmethods like Buffers, Adapters and Runtime Stubs
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    All                 = 3,    // All types (No code cache segmentation)
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    Pregenerated        = 4,    // Special blobs, managed by CodeCacheExtensions
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    NumTypes            = 5     // Number of CodeBlobTypes
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  };
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};
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// CodeBlob - superclass for all entries in the CodeCache.
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//
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// Subtypes are:
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//   CompiledMethod       : Compiled Java methods (include method that calls to native code)
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//     nmethod            : JIT Compiled Java methods
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//   RuntimeBlob          : Non-compiled method code; generated glue code
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//     RuntimeStub        : Call to VM runtime methods
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//     DeoptimizationBlob : Used for deoptimization
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//     ExceptionBlob      : Used for stack unrolling
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//     SafepointBlob      : Used to handle illegal instruction exceptions
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//
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//
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// Layout:
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//   - header
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//   - relocation
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//   - content space
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//     - instruction space
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//   - data space
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class CodeBlobLayout;
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class CodeBlob VALUE_OBJ_CLASS_SPEC {
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  friend class VMStructs;
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  friend class JVMCIVMStructs;
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  friend class CodeCacheDumper;
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protected:
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  const char* _name;
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  int        _size;                              // total size of CodeBlob in bytes
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  int        _header_size;                       // size of header (depends on subclass)
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  int        _frame_complete_offset;             // instruction offsets in [0.._frame_complete_offset) have
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                                                 // not finished setting up their frame. Beware of pc's in
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                                                 // that range. There is a similar range(s) on returns
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                                                 // which we don't detect.
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  int        _data_offset;                       // offset to where data region begins
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  int        _frame_size;                        // size of stack frame
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  address    _code_begin;
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  address    _code_end;
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  address    _content_begin;                     // address to where content region begins (this includes consts, insts, stubs)
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                                                 // address    _content_end - not required, for all CodeBlobs _code_end == _content_end for now
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  address    _data_end;
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  address    _relocation_begin;
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  address    _relocation_end;
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  ImmutableOopMapSet* _oop_maps;                 // OopMap for this CodeBlob
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  bool                _caller_must_gc_arguments;
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  CodeStrings         _strings;
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  CodeBlob(const char* name, const CodeBlobLayout& layout, int frame_complete_offset, int frame_size, ImmutableOopMapSet* oop_maps, bool caller_must_gc_arguments);
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  CodeBlob(const char* name, const CodeBlobLayout& layout, CodeBuffer* cb, int frame_complete_offset, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments);
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public:
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  // Returns the space needed for CodeBlob
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  static unsigned int allocation_size(CodeBuffer* cb, int header_size);
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  static unsigned int align_code_offset(int offset);
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  // Deletion
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  virtual void flush();
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  // Typing
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  virtual bool is_buffer_blob() const                 { return false; }
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  virtual bool is_nmethod() const                     { return false; }
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  virtual bool is_runtime_stub() const                { return false; }
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  virtual bool is_deoptimization_stub() const         { return false; }
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  virtual bool is_uncommon_trap_stub() const          { return false; }
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  virtual bool is_exception_stub() const              { return false; }
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  virtual bool is_safepoint_stub() const              { return false; }
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  virtual bool is_adapter_blob() const                { return false; }
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  virtual bool is_method_handles_adapter_blob() const { return false; }
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  virtual bool is_compiled() const                    { return false; }
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  virtual bool is_compiled_by_c2() const         { return false; }
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  virtual bool is_compiled_by_c1() const         { return false; }
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  virtual bool is_compiled_by_jvmci() const      { return false; }
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  // Casting
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  nmethod* as_nmethod_or_null()                { return is_nmethod() ? (nmethod*) this : NULL; }
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  nmethod* as_nmethod()                        { assert(is_nmethod(), "must be nmethod"); return (nmethod*) this; }
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  CompiledMethod* as_compiled_method_or_null() { return is_compiled() ? (CompiledMethod*) this : NULL; }
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  CompiledMethod* as_compiled_method()         { assert(is_compiled(), "must be compiled"); return (CompiledMethod*) this; }
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  // Boundaries
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  address header_begin() const        { return (address) this; }
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  relocInfo* relocation_begin() const { return (relocInfo*) _relocation_begin; };
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  relocInfo* relocation_end() const   { return (relocInfo*) _relocation_end; }
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  address content_begin() const       { return _content_begin; }
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  address content_end() const         { return _code_end; } // _code_end == _content_end is true for all types of blobs for now, it is also checked in the constructor
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  address code_begin() const          { return _code_begin;    }
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  address code_end() const            { return _code_end; }
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  address data_end() const            { return _data_end;      }
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  // Sizes
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  int size() const                               { return _size; }
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  int header_size() const                        { return _header_size; }
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  int relocation_size() const                    { return (address) relocation_end() - (address) relocation_begin(); }
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  int content_size() const                       { return           content_end()    -           content_begin();    }
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  int code_size() const                          { return           code_end()       -           code_begin();       }
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  // Containment
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  bool blob_contains(address addr) const         { return header_begin()       <= addr && addr < data_end();       }
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  bool code_contains(address addr) const         { return code_begin()         <= addr && addr < code_end();       }
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  bool contains(address addr) const              { return content_begin()      <= addr && addr < content_end();    }
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  bool is_frame_complete_at(address addr) const  { return code_contains(addr) && addr >= code_begin() + _frame_complete_offset; }
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  // CodeCache support: really only used by the nmethods, but in order to get
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  // asserts and certain bookkeeping to work in the CodeCache they are defined
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  // virtual here.
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  virtual bool is_zombie() const                 { return false; }
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  virtual bool is_locked_by_vm() const           { return false; }
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  virtual bool is_unloaded() const               { return false; }
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  virtual bool is_not_entrant() const            { return false; }
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  // GC support
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  virtual bool is_alive() const                  = 0;
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  // OopMap for frame
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  ImmutableOopMapSet* oop_maps() const           { return _oop_maps; }
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  void set_oop_maps(OopMapSet* p);
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  const ImmutableOopMap* oop_map_for_return_address(address return_address);
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  virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) = 0;
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  // Frame support
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  int  frame_size() const                        { return _frame_size; }
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  void set_frame_size(int size)                  { _frame_size = size; }
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  // Returns true, if the next frame is responsible for GC'ing oops passed as arguments
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  bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; }
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  // Naming
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  const char* name() const                       { return _name; }
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  void set_name(const char* name)                { _name = name; }
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  // Debugging
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  virtual void verify() = 0;
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  virtual void print() const                     { print_on(tty); };
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  virtual void print_on(outputStream* st) const;
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  virtual void print_value_on(outputStream* st) const;
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  void print_code();
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  // Print the comment associated with offset on stream, if there is one
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  virtual void print_block_comment(outputStream* stream, address block_begin) const {
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    intptr_t offset = (intptr_t)(block_begin - code_begin());
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    _strings.print_block_comment(stream, offset);
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  }
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  // Transfer ownership of comments to this CodeBlob
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  void set_strings(CodeStrings& strings) {
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    _strings.assign(strings);
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  }
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  static ByteSize name_field_offset() {
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    return byte_offset_of(CodeBlob, _name);
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  }
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  static ByteSize oop_maps_field_offset() {
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    return byte_offset_of(CodeBlob, _oop_maps);
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  }
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};
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class CodeBlobLayout : public StackObj {
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private:
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  int _size;
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  int _header_size;
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  int _relocation_size;
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  int _content_offset;
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  int _code_offset;
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  int _data_offset;
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  address _code_begin;
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  address _code_end;
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  address _content_begin;
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  address _content_end;
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  address _data_end;
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  address _relocation_begin;
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  address _relocation_end;
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public:
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  CodeBlobLayout(address code_begin, address code_end, address content_begin, address content_end, address data_end, address relocation_begin, address relocation_end) :
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    _size(0),
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    _header_size(0),
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    _relocation_size(0),
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    _content_offset(0),
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    _code_offset(0),
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    _data_offset(0),
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    _content_begin(content_begin),
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    _content_end(content_end),
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    _code_begin(code_begin),
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    _code_end(code_end),
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    _data_end(data_end),
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    _relocation_begin(relocation_begin),
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    _relocation_end(relocation_end)
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  {
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  }
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  CodeBlobLayout(const address start, int size, int header_size, int relocation_size, int data_offset) :
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    _size(size),
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    _header_size(header_size),
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    _relocation_size(relocation_size),
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    _content_offset(CodeBlob::align_code_offset(_header_size + _relocation_size)),
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    _code_offset(_content_offset),
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    _data_offset(data_offset)
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  {
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    assert(_relocation_size == round_to(_relocation_size, oopSize), "unaligned size");
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    _code_begin = (address) start + _code_offset;
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    _code_end = (address) start + _data_offset;
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    _content_begin = (address) start + _content_offset;
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    _content_end = (address) start + _data_offset;
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    _data_end = (address) start + _size;
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    _relocation_begin = (address) start + _header_size;
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    _relocation_end = _relocation_begin + _relocation_size;
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  }
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  CodeBlobLayout(const address start, int size, int header_size, const CodeBuffer* cb) :
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    _size(size),
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    _header_size(header_size),
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    _relocation_size(round_to(cb->total_relocation_size(), oopSize)),
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    _content_offset(CodeBlob::align_code_offset(_header_size + _relocation_size)),
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    _code_offset(_content_offset + cb->total_offset_of(cb->insts())),
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    _data_offset(_content_offset + round_to(cb->total_content_size(), oopSize))
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  {
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    assert(_relocation_size == round_to(_relocation_size, oopSize), "unaligned size");
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    _code_begin = (address) start + _code_offset;
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    _code_end = (address) start + _data_offset;
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    _content_begin = (address) start + _content_offset;
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    _content_end = (address) start + _data_offset;
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    _data_end = (address) start + _size;
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    _relocation_begin = (address) start + _header_size;
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    _relocation_end = _relocation_begin + _relocation_size;
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  }
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  int size() const { return _size; }
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  int header_size() const { return _header_size; }
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  int relocation_size() const { return _relocation_size; }
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  int content_offset() const { return _content_offset; }
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  int code_offset() const { return _code_offset; }
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  int data_offset() const { return _data_offset; }
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  address code_begin() const { return _code_begin; }
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  address code_end() const { return _code_end; }
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  address data_end() const { return _data_end; }
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  address relocation_begin() const { return _relocation_begin; }
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  address relocation_end() const { return _relocation_end; }
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  address content_begin() const { return _content_begin; }
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  address content_end() const { return _content_end; }
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};
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class RuntimeBlob : public CodeBlob {
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  friend class VMStructs;
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 public:
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  // Creation
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  // a) simple CodeBlob
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  // frame_complete is the offset from the beginning of the instructions
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  // to where the frame setup (from stackwalk viewpoint) is complete.
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  RuntimeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size);
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  // b) full CodeBlob
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  RuntimeBlob(
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    const char* name,
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    CodeBuffer* cb,
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    int         header_size,
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    int         size,
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    int         frame_complete,
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    int         frame_size,
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    OopMapSet*  oop_maps,
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    bool        caller_must_gc_arguments = false
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  );
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  // GC support
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  virtual bool is_alive() const                  = 0;
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  void verify();
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  // OopMap for frame
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  virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { ShouldNotReachHere(); }
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  // Debugging
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  void print() const                             { print_on(tty); }
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  virtual void print_on(outputStream* st) const { CodeBlob::print_on(st); }
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  virtual void print_value_on(outputStream* st) const { CodeBlob::print_value_on(st); }
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  // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService.
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  static void trace_new_stub(RuntimeBlob* blob, const char* name1, const char* name2 = "");
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};
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class WhiteBox;
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//----------------------------------------------------------------------------------------------------
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// BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc.
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class BufferBlob: public RuntimeBlob {
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  friend class VMStructs;
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  friend class AdapterBlob;
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  friend class MethodHandlesAdapterBlob;
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  friend class WhiteBox;
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  // Creation support
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  BufferBlob(const char* name, int size);
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  BufferBlob(const char* name, int size, CodeBuffer* cb);
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  void* operator new(size_t s, unsigned size) throw();
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  // Creation
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  static BufferBlob* create(const char* name, int buffer_size);
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  static BufferBlob* create(const char* name, CodeBuffer* cb);
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  static void free(BufferBlob* buf);
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  // Typing
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  virtual bool is_buffer_blob() const            { return true; }
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  // GC/Verification support
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  void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }
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  bool is_alive() const                          { return true; }
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  void verify();
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  void print_on(outputStream* st) const;
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  void print_value_on(outputStream* st) const;
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};
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//----------------------------------------------------------------------------------------------------
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// AdapterBlob: used to hold C2I/I2C adapters
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class AdapterBlob: public BufferBlob {
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private:
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  AdapterBlob(int size, CodeBuffer* cb);
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public:
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  // Creation
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  static AdapterBlob* create(CodeBuffer* cb);
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  // Typing
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  virtual bool is_adapter_blob() const { return true; }
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};
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//----------------------------------------------------------------------------------------------------
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// MethodHandlesAdapterBlob: used to hold MethodHandles adapters
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class MethodHandlesAdapterBlob: public BufferBlob {
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private:
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  MethodHandlesAdapterBlob(int size)                 : BufferBlob("MethodHandles adapters", size) {}
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public:
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  // Creation
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  static MethodHandlesAdapterBlob* create(int buffer_size);
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  // Typing
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  virtual bool is_method_handles_adapter_blob() const { return true; }
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};
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//----------------------------------------------------------------------------------------------------
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// RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine
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class RuntimeStub: public RuntimeBlob {
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  friend class VMStructs;
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 private:
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  // Creation support
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  RuntimeStub(
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    const char* name,
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    CodeBuffer* cb,
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    int         size,
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    int         frame_complete,
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    int         frame_size,
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    OopMapSet*  oop_maps,
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    bool        caller_must_gc_arguments
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  );
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   423
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  void* operator new(size_t s, unsigned size) throw();
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 public:
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  // Creation
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  static RuntimeStub* new_runtime_stub(
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    const char* stub_name,
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   430
    CodeBuffer* cb,
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    int         frame_complete,
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    int         frame_size,
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    OopMapSet*  oop_maps,
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    bool        caller_must_gc_arguments
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  );
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   436
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   437
  // Typing
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   438
  bool is_runtime_stub() const                   { return true; }
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   439
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  address entry_point() const                    { return code_begin(); }
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  // GC/Verification support
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   443
  void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }
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  bool is_alive() const                          { return true; }
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  void verify();
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  void print_on(outputStream* st) const;
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  void print_value_on(outputStream* st) const;
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};
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//----------------------------------------------------------------------------------------------------
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   453
// Super-class for all blobs that exist in only one instance. Implements default behaviour.
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   454
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   455
class SingletonBlob: public RuntimeBlob {
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  friend class VMStructs;
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   458
 protected:
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   459
  void* operator new(size_t s, unsigned size) throw();
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   461
 public:
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   SingletonBlob(
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   463
     const char* name,
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     CodeBuffer* cb,
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     int         header_size,
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     int         size,
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     int         frame_size,
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     OopMapSet*  oop_maps
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   469
   )
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   470
   : RuntimeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps)
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  {};
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   473
  address entry_point()                          { return code_begin(); }
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   474
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  bool is_alive() const                          { return true; }
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   476
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   477
  // GC/Verification support
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diff changeset
   478
  void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   479
  void verify(); // does nothing
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   480
  void print_on(outputStream* st) const;
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   481
  void print_value_on(outputStream* st) const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
// DeoptimizationBlob
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
class DeoptimizationBlob: public SingletonBlob {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
  friend class VMStructs;
35123
b0b89d83bcf5 8134994: use separate VMStructs databases for SA and JVMCI
twisti
parents: 33160
diff changeset
   490
  friend class JVMCIVMStructs;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
  int _unpack_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
  int _unpack_with_exception;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
  int _unpack_with_reexecution;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
  int _unpack_with_exception_in_tls;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   498
#if INCLUDE_JVMCI
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   499
  // Offsets when JVMCI calls uncommon_trap.
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   500
  int _uncommon_trap_offset;
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   501
  int _implicit_exception_uncommon_trap_offset;
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   502
#endif
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   503
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  // Creation support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  DeoptimizationBlob(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
    int         size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
    int         unpack_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
    int         unpack_with_exception_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
    int         unpack_with_reexecution_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  // Creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
  static DeoptimizationBlob* create(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
    int         unpack_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    int         unpack_with_exception_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
    int         unpack_with_reexecution_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
  // Typing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  bool is_deoptimization_stub() const { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
  bool exception_address_is_unpack_entry(address pc) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
    address unpack_pc = unpack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
    return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
  // GC for args
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
  void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
  // Printing
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 6065
diff changeset
   537
  void print_value_on(outputStream* st) const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   539
  address unpack() const                         { return code_begin() + _unpack_offset;           }
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   540
  address unpack_with_exception() const          { return code_begin() + _unpack_with_exception;   }
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   541
  address unpack_with_reexecution() const        { return code_begin() + _unpack_with_reexecution; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
  // Alternate entry point for C1 where the exception and issuing pc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  // are in JavaThread::_exception_oop and JavaThread::_exception_pc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
  // instead of being in registers.  This is needed because C1 doesn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  // model exception paths in a way that keeps these registers free so
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  // there may be live values in those registers during deopt.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  void set_unpack_with_exception_in_tls_offset(int offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    _unpack_with_exception_in_tls = offset;
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   550
    assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  }
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6176
diff changeset
   552
  address unpack_with_exception_in_tls() const   { return code_begin() + _unpack_with_exception_in_tls; }
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   553
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   554
#if INCLUDE_JVMCI
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   555
  // Offsets when JVMCI calls uncommon_trap.
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   556
  void set_uncommon_trap_offset(int offset) {
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   557
    _uncommon_trap_offset = offset;
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   558
    assert(contains(code_begin() + _uncommon_trap_offset), "must be PC inside codeblob");
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   559
  }
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   560
  address uncommon_trap() const                  { return code_begin() + _uncommon_trap_offset; }
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   561
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   562
  void set_implicit_exception_uncommon_trap_offset(int offset) {
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   563
    _implicit_exception_uncommon_trap_offset = offset;
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   564
    assert(contains(code_begin() + _implicit_exception_uncommon_trap_offset), "must be PC inside codeblob");
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   565
  }
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   566
  address implicit_exception_uncommon_trap() const { return code_begin() + _implicit_exception_uncommon_trap_offset; }
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 31620
diff changeset
   567
#endif // INCLUDE_JVMCI
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
// UncommonTrapBlob (currently only used by Compiler 2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
#ifdef COMPILER2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
class UncommonTrapBlob: public SingletonBlob {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  // Creation support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  UncommonTrapBlob(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
    int         size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  // Creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
  static UncommonTrapBlob* create(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
  // GC for args
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
  void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  // Typing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
  bool is_uncommon_trap_stub() const             { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
// ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
class ExceptionBlob: public SingletonBlob {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
  // Creation support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
  ExceptionBlob(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
    int         size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  // Creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  static ExceptionBlob* create(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
  // GC for args
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  // Typing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
  bool is_exception_stub() const                 { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
#endif // COMPILER2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
// SafepointBlob: handles illegal_instruction exceptions during a safepoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
class SafepointBlob: public SingletonBlob {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
  // Creation support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  SafepointBlob(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    int         size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  // Creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
  static SafepointBlob* create(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
    CodeBuffer* cb,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    OopMapSet*  oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
    int         frame_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
  // GC for args
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
  // Typing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
  bool is_safepoint_stub() const                 { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 6418
diff changeset
   662
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 6418
diff changeset
   663
#endif // SHARE_VM_CODE_CODEBLOB_HPP