cppInterpreter.hpp revision 1472:c18cbe5936b8 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * version 2 for more details (a copy is included in the LICENSE file that
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14 *
15 * You should have received a copy of the GNU General Public License version
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23 */
24
25#ifdef CC_INTERP
26
27// This file contains the platform-independent parts
28// of the c++ interpreter
29
30class CppInterpreter: public AbstractInterpreter {
31  friend class VMStructs;
32  friend class Interpreter; // contains()
33  friend class InterpreterGenerator; // result handlers
34  friend class CppInterpreterGenerator; // result handlers
35 public:
36
37
38 protected:
39
40  // tosca result -> stack result
41  static address    _tosca_to_stack[number_of_result_handlers];  // converts tosca to C++ interpreter stack result
42  // stack result -> stack result
43  static address    _stack_to_stack[number_of_result_handlers];  // pass result between C++ interpreter calls
44  // stack result -> native abi result
45  static address    _stack_to_native_abi[number_of_result_handlers];  // converts C++ interpreter results to native abi
46
47  // this is to allow frame and only frame to use contains().
48  friend class      frame;
49
50 public:
51  // Initialization/debugging
52  static void       initialize();
53  // this only returns whether a pc is within generated code for the interpreter.
54
55  // This is a moderately dubious interface for the c++ interpreter. Only
56  // frame code and debug.cpp should be using it.
57  static bool       contains(address pc);
58
59 public:
60
61
62  // No displatch table to switch so no need for these to do anything special
63  static void notice_safepoints() {}
64  static void ignore_safepoints() {}
65
66  static address    native_result_to_tosca()                    { return (address)_native_abi_to_tosca; } // aka result handler
67  static address    tosca_result_to_stack()                     { return (address)_tosca_to_stack; }
68  static address    stack_result_to_stack()                     { return (address)_stack_to_stack; }
69  static address    stack_result_to_native()                    { return (address)_stack_to_native_abi; }
70
71  static address    native_result_to_tosca(int index)           { return _native_abi_to_tosca[index]; } // aka result handler
72  static address    tosca_result_to_stack(int index)            { return _tosca_to_stack[index]; }
73  static address    stack_result_to_stack(int index)            { return _stack_to_stack[index]; }
74  static address    stack_result_to_native(int index)           { return _stack_to_native_abi[index]; }
75
76  static address    return_entry  (TosState state, int length);
77  static address    deopt_entry   (TosState state, int length);
78
79#include "incls/_cppInterpreter_pd.hpp.incl"
80
81};
82
83#endif // CC_INTERP
84