25 #ifndef SHARE_ASM_CODEBUFFER_HPP
26 #define SHARE_ASM_CODEBUFFER_HPP
27
28 #include "code/oopRecorder.hpp"
29 #include "code/relocInfo.hpp"
30 #include "utilities/align.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/macros.hpp"
33
34 class CodeStrings;
35 class PhaseCFG;
36 class Compile;
37 class BufferBlob;
38 class CodeBuffer;
39 class Label;
40
41 class CodeOffsets: public StackObj {
42 public:
43 enum Entries { Entry,
44 Verified_Entry,
45 Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete
46 OSR_Entry,
47 Exceptions, // Offset where exception handler lives
48 Deopt, // Offset where deopt handler lives
49 DeoptMH, // Offset where MethodHandle deopt handler lives
50 UnwindHandler, // Offset to default unwind handler
51 max_Entries };
52
53 // special value to note codeBlobs where profile (forte) stack walking is
54 // always dangerous and suspect.
55
56 enum { frame_never_safe = -1 };
57
58 private:
59 int _values[max_Entries];
60
61 public:
62 CodeOffsets() {
63 _values[Entry ] = 0;
64 _values[Verified_Entry] = 0;
65 _values[Frame_Complete] = frame_never_safe;
66 _values[OSR_Entry ] = 0;
67 _values[Exceptions ] = -1;
68 _values[Deopt ] = -1;
69 _values[DeoptMH ] = -1;
70 _values[UnwindHandler ] = -1;
71 }
72
73 int value(Entries e) { return _values[e]; }
74 void set_value(Entries e, int val) { _values[e] = val; }
75 };
76
77 // This class represents a stream of code and associated relocations.
78 // There are a few in each CodeBuffer.
79 // They are filled concurrently, and concatenated at the end.
80 class CodeSection {
81 friend class CodeBuffer;
82 public:
83 typedef int csize_t; // code size type; would be size_t except for history
84
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25 #ifndef SHARE_ASM_CODEBUFFER_HPP
26 #define SHARE_ASM_CODEBUFFER_HPP
27
28 #include "code/oopRecorder.hpp"
29 #include "code/relocInfo.hpp"
30 #include "utilities/align.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/macros.hpp"
33
34 class CodeStrings;
35 class PhaseCFG;
36 class Compile;
37 class BufferBlob;
38 class CodeBuffer;
39 class Label;
40
41 class CodeOffsets: public StackObj {
42 public:
43 enum Entries { Entry,
44 Verified_Entry,
45 Verified_Value_Entry,
46 Verified_Value_Entry_RO,
47 Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete
48 OSR_Entry,
49 Exceptions, // Offset where exception handler lives
50 Deopt, // Offset where deopt handler lives
51 DeoptMH, // Offset where MethodHandle deopt handler lives
52 UnwindHandler, // Offset to default unwind handler
53 max_Entries };
54
55 // special value to note codeBlobs where profile (forte) stack walking is
56 // always dangerous and suspect.
57
58 enum { frame_never_safe = -1 };
59
60 private:
61 int _values[max_Entries];
62
63 public:
64 CodeOffsets() {
65 _values[Entry ] = 0;
66 _values[Verified_Entry] = 0;
67 _values[Verified_Value_Entry] = -1;
68 _values[Verified_Value_Entry_RO] = -1;
69 _values[Frame_Complete] = frame_never_safe;
70 _values[OSR_Entry ] = 0;
71 _values[Exceptions ] = -1;
72 _values[Deopt ] = -1;
73 _values[DeoptMH ] = -1;
74 _values[UnwindHandler ] = -1;
75 }
76
77 int value(Entries e) { return _values[e]; }
78 void set_value(Entries e, int val) { _values[e] = val; }
79 };
80
81 // This class represents a stream of code and associated relocations.
82 // There are a few in each CodeBuffer.
83 // They are filled concurrently, and concatenated at the end.
84 class CodeSection {
85 friend class CodeBuffer;
86 public:
87 typedef int csize_t; // code size type; would be size_t except for history
88
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