src/hotspot/share/code/pcDesc.hpp
author ihse
Thu, 19 Oct 2017 11:59:52 +0200
changeset 47659 a8e9aff89f7b
parent 47216 71c04702a3d5
child 49373 47b5652f2928
permissions -rw-r--r--
8189608: Remove duplicated jni.h Reviewed-by: erikj, dholmes, coleenp
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 33160
diff changeset
     2
 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4894
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4894
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4894
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    25
#ifndef SHARE_VM_CODE_PCDESC_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    26
#define SHARE_VM_CODE_PCDESC_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    27
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "memory/allocation.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    29
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
// PcDescs map a physical PC (given as offset from start of nmethod) to
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
// the corresponding source scope and byte code index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 33160
diff changeset
    33
class CompiledMethod;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
class PcDesc VALUE_OBJ_CLASS_SPEC {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
  int _pc_offset;           // offset from start of nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
  int _scope_decode_offset; // offset for scope in nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
  int _obj_decode_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    42
  enum {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    43
    PCDESC_reexecute               = 1 << 0,
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    44
    PCDESC_is_method_handle_invoke = 1 << 1,
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 10517
diff changeset
    45
    PCDESC_return_oop              = 1 << 2,
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 10517
diff changeset
    46
    PCDESC_rethrow_exception       = 1 << 3
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    47
  };
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    48
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    49
  int _flags;
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    50
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    51
  void set_flag(int mask, bool z) {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    52
    _flags = z ? (_flags | mask) : (_flags & ~mask);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    53
  }
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 1
diff changeset
    54
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    56
  int pc_offset() const           { return _pc_offset;   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    57
  int scope_decode_offset() const { return _scope_decode_offset; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    58
  int obj_decode_offset() const   { return _obj_decode_offset; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    59
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
  void set_pc_offset(int x)           { _pc_offset           = x; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    61
  void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    62
  void set_obj_decode_offset(int x)   { _obj_decode_offset   = x; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    63
489c9b5090e2 Initial load
duke
parents:
diff changeset
    64
  // Constructor (only used for static in nmethod.cpp)
489c9b5090e2 Initial load
duke
parents:
diff changeset
    65
  // Also used by ScopeDesc::sender()]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    66
  PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    67
489c9b5090e2 Initial load
duke
parents:
diff changeset
    68
  enum {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    69
    // upper and lower exclusive limits real offsets:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    70
    lower_offset_limit = -1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    71
    upper_offset_limit = (unsigned int)-1 >> 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    72
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
    73
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 1
diff changeset
    74
  // Flags
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 10517
diff changeset
    75
  bool     rethrow_exception()              const { return (_flags & PCDESC_rethrow_exception) != 0; }
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 10517
diff changeset
    76
  void set_rethrow_exception(bool z)              { set_flag(PCDESC_rethrow_exception, z); }
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    77
  bool     should_reexecute()              const { return (_flags & PCDESC_reexecute) != 0; }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    78
  void set_should_reexecute(bool z)              { set_flag(PCDESC_reexecute, z); }
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 1
diff changeset
    79
4017
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    80
  // Does pd refer to the same information as pd?
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    81
  bool is_same_info(const PcDesc* pd) {
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    82
    return _scope_decode_offset == pd->_scope_decode_offset &&
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    83
      _obj_decode_offset == pd->_obj_decode_offset &&
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    84
      _flags == pd->_flags;
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    85
  }
0cb087a2b9a9 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 3686
diff changeset
    86
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    87
  bool     is_method_handle_invoke()       const { return (_flags & PCDESC_is_method_handle_invoke) != 0;     }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    88
  void set_is_method_handle_invoke(bool z)       { set_flag(PCDESC_is_method_handle_invoke, z); }
4564
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4017
diff changeset
    89
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    90
  bool     return_oop()                    const { return (_flags & PCDESC_return_oop) != 0;     }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 7397
diff changeset
    91
  void set_return_oop(bool z)                    { set_flag(PCDESC_return_oop, z); }
4894
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4564
diff changeset
    92
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    93
  // Returns the real pc
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 33160
diff changeset
    94
  address real_pc(const CompiledMethod* code) const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    95
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 33160
diff changeset
    96
  void print(CompiledMethod* code);
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 33160
diff changeset
    97
  bool verify(CompiledMethod* code);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    98
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    99
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   100
#endif // SHARE_VM_CODE_PCDESC_HPP