25 #ifndef SHARE_CODE_PCDESC_HPP
26 #define SHARE_CODE_PCDESC_HPP
27
28
29 // PcDescs map a physical PC (given as offset from start of nmethod) to
30 // the corresponding source scope and byte code index.
31
32 class CompiledMethod;
33
34 class PcDesc {
35 friend class VMStructs;
36 private:
37 int _pc_offset; // offset from start of nmethod
38 int _scope_decode_offset; // offset for scope in nmethod
39 int _obj_decode_offset;
40
41 enum {
42 PCDESC_reexecute = 1 << 0,
43 PCDESC_is_method_handle_invoke = 1 << 1,
44 PCDESC_return_oop = 1 << 2,
45 PCDESC_rethrow_exception = 1 << 3
46 };
47
48 int _flags;
49
50 void set_flag(int mask, bool z) {
51 _flags = z ? (_flags | mask) : (_flags & ~mask);
52 }
53
54 public:
55 int pc_offset() const { return _pc_offset; }
56 int scope_decode_offset() const { return _scope_decode_offset; }
57 int obj_decode_offset() const { return _obj_decode_offset; }
58
59 void set_pc_offset(int x) { _pc_offset = x; }
60 void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
61 void set_obj_decode_offset(int x) { _obj_decode_offset = x; }
62
63 // Constructor (only used for static in nmethod.cpp)
64 // Also used by ScopeDesc::sender()]
65 PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
71 };
72
73 // Flags
74 bool rethrow_exception() const { return (_flags & PCDESC_rethrow_exception) != 0; }
75 void set_rethrow_exception(bool z) { set_flag(PCDESC_rethrow_exception, z); }
76 bool should_reexecute() const { return (_flags & PCDESC_reexecute) != 0; }
77 void set_should_reexecute(bool z) { set_flag(PCDESC_reexecute, z); }
78
79 // Does pd refer to the same information as pd?
80 bool is_same_info(const PcDesc* pd) {
81 return _scope_decode_offset == pd->_scope_decode_offset &&
82 _obj_decode_offset == pd->_obj_decode_offset &&
83 _flags == pd->_flags;
84 }
85
86 bool is_method_handle_invoke() const { return (_flags & PCDESC_is_method_handle_invoke) != 0; }
87 void set_is_method_handle_invoke(bool z) { set_flag(PCDESC_is_method_handle_invoke, z); }
88
89 bool return_oop() const { return (_flags & PCDESC_return_oop) != 0; }
90 void set_return_oop(bool z) { set_flag(PCDESC_return_oop, z); }
91
92 // Returns the real pc
93 address real_pc(const CompiledMethod* code) const;
94
95 void print(CompiledMethod* code) { print_on(tty, code); }
96 void print_on(outputStream* st, CompiledMethod* code);
97 bool verify(CompiledMethod* code);
98 };
99
100 #endif // SHARE_CODE_PCDESC_HPP
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25 #ifndef SHARE_CODE_PCDESC_HPP
26 #define SHARE_CODE_PCDESC_HPP
27
28
29 // PcDescs map a physical PC (given as offset from start of nmethod) to
30 // the corresponding source scope and byte code index.
31
32 class CompiledMethod;
33
34 class PcDesc {
35 friend class VMStructs;
36 private:
37 int _pc_offset; // offset from start of nmethod
38 int _scope_decode_offset; // offset for scope in nmethod
39 int _obj_decode_offset;
40
41 enum {
42 PCDESC_reexecute = 1 << 0,
43 PCDESC_is_method_handle_invoke = 1 << 1,
44 PCDESC_return_oop = 1 << 2,
45 PCDESC_rethrow_exception = 1 << 3,
46 PCDESC_return_vt = 1 << 4
47 };
48
49 int _flags;
50
51 void set_flag(int mask, bool z) {
52 _flags = z ? (_flags | mask) : (_flags & ~mask);
53 }
54
55 public:
56 int pc_offset() const { return _pc_offset; }
57 int scope_decode_offset() const { return _scope_decode_offset; }
58 int obj_decode_offset() const { return _obj_decode_offset; }
59
60 void set_pc_offset(int x) { _pc_offset = x; }
61 void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
62 void set_obj_decode_offset(int x) { _obj_decode_offset = x; }
63
64 // Constructor (only used for static in nmethod.cpp)
65 // Also used by ScopeDesc::sender()]
66 PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
72 };
73
74 // Flags
75 bool rethrow_exception() const { return (_flags & PCDESC_rethrow_exception) != 0; }
76 void set_rethrow_exception(bool z) { set_flag(PCDESC_rethrow_exception, z); }
77 bool should_reexecute() const { return (_flags & PCDESC_reexecute) != 0; }
78 void set_should_reexecute(bool z) { set_flag(PCDESC_reexecute, z); }
79
80 // Does pd refer to the same information as pd?
81 bool is_same_info(const PcDesc* pd) {
82 return _scope_decode_offset == pd->_scope_decode_offset &&
83 _obj_decode_offset == pd->_obj_decode_offset &&
84 _flags == pd->_flags;
85 }
86
87 bool is_method_handle_invoke() const { return (_flags & PCDESC_is_method_handle_invoke) != 0; }
88 void set_is_method_handle_invoke(bool z) { set_flag(PCDESC_is_method_handle_invoke, z); }
89
90 bool return_oop() const { return (_flags & PCDESC_return_oop) != 0; }
91 void set_return_oop(bool z) { set_flag(PCDESC_return_oop, z); }
92
93 bool return_vt() const { return (_flags & PCDESC_return_vt) != 0; }
94 void set_return_vt(bool z) { set_flag(PCDESC_return_vt, z); }
95
96 // Returns the real pc
97 address real_pc(const CompiledMethod* code) const;
98
99 void print(CompiledMethod* code) { print_on(tty, code); }
100 void print_on(outputStream* st, CompiledMethod* code);
101 bool verify(CompiledMethod* code);
102 };
103
104 #endif // SHARE_CODE_PCDESC_HPP
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