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Side by Side Diff: src/assembler-re2k.h

Issue 9690: Rename codegen to macro-assembler.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/experimental/regexp2000/
Patch Set: Created 12 years, 1 month ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 2
3 // A light-weight assembler for the Regexp2000 byte code. 3 // A light-weight assembler for the Regexp2000 byte code.
4 4
5 #ifndef V8_ASSEMBLER_RE2K_H_ 5 #ifndef V8_ASSEMBLER_RE2K_H_
6 #define V8_ASSEMBLER_RE2K_H_ 6 #define V8_ASSEMBLER_RE2K_H_
7 7
8 namespace v8 { namespace internal { 8 namespace v8 { namespace internal {
9 9
10 10
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26 explicit Re2kAssembler(Vector<byte>); 26 explicit Re2kAssembler(Vector<byte>);
27 ~Re2kAssembler(); 27 ~Re2kAssembler();
28 28
29 // CP = current position in source. 29 // CP = current position in source.
30 // BT = backtrack label. 30 // BT = backtrack label.
31 31
32 // Stack. 32 // Stack.
33 void PushCurrentPosition(int cp_offset = 0); 33 void PushCurrentPosition(int cp_offset = 0);
34 void PushBacktrack(Label* l); 34 void PushBacktrack(Label* l);
35 void PushRegister(int index); 35 void PushRegister(int index);
36 void SetRegister(int index, int cp_offset = 0); 36 void SetRegisterToCurrentPosition(int index, int cp_offset = 0);
37 void SetRegister(int index, int value);
37 38
38 void PopCurrentPosition(); 39 void PopCurrentPosition();
39 void PopBacktrack(); 40 void PopBacktrack();
40 void PopRegister(int index); 41 void PopRegister(int index);
41 42
42 void Fail(); 43 void Fail();
43 void FailIfWithin(int distance_from_end); 44 void FailIfWithin(int distance_from_end);
44 void Succeed(); 45 void Succeed();
45 46
47 void Break(); // This insn will cause a fatal VM error if hit.
Lasse Reichstein 2008/11/07 10:57:35 insn->instruction
48
46 void Bind(Label* l); // binds an unbound label L to the current code position 49 void Bind(Label* l); // binds an unbound label L to the current code position
47 50
48 void AdvanceCP(int cp_offset = 1); 51 void AdvanceCP(int cp_offset = 1);
49 52
50 void GoTo(Label* l); 53 void GoTo(Label* l);
51 54
52 // Loads current char into a register. 55 // Loads current char into a register.
53 void LoadCurrentChar(int cp_offset = 0); 56 void LoadCurrentChar(int cp_offset = 0);
54 57
55 // Checks current char register against a singleton. 58 // Checks current char register against a singleton.
56 void CheckChar(uc16 c, Label* on_mismatch); 59 void CheckChar(uc16 c, Label* on_mismatch);
57 void CheckNotChar(uc16 c, Label* on_match); 60 void CheckNotChar(uc16 c, Label* on_match);
58 61
62 // Checks current char register against the magic end-of-input symbol.
63 void CheckEnd(Label* on_not_end);
64 void CheckNotEnd(Label* on_end);
65
59 // Checks current char register against a range. 66 // Checks current char register against a range.
60 void CheckRange(uc16 start, uc16 end, Label* on_mismatch); 67 void CheckRange(uc16 start, uc16 end, Label* on_mismatch);
61 void CheckNotRange(uc16 start, uc16 end, Label* on_match); 68 void CheckNotRange(uc16 start, uc16 end, Label* on_match);
62 69
63
64 // Checks that the current char is in the range and that the corresponding bit 70 // Checks that the current char is in the range and that the corresponding bit
65 // is set in the bitmap. 71 // is set in the bitmap.
66 void CheckBitmap(uc16 start, uc16 end, const byte* bits, Label* on_mismatch); 72 void CheckBitmap(uc16 start, uc16 end, const byte* bits, Label* on_mismatch);
67 void CheckNotBitmap(uc16 start, uc16 end, const byte* bits, Label* on_match); 73 void CheckNotBitmap(uc16 start, uc16 end, const byte* bits, Label* on_match);
68 74
69 // Checks current position (plus optional offset) for a match against a 75 // Checks current position (plus optional offset) for a match against a
70 // previous capture. Advances current position by the length of the capture 76 // previous capture. Advances current position by the length of the capture
71 // iff it matches. The capture is stored in a given register and the 77 // iff it matches. The capture is stored in a given register and the
72 // the register after. 78 // the register after.
73 void CheckBackref(int capture_index, Label* on_mismatch, int cp_offset = 0); 79 void CheckBackref(int capture_index, Label* on_mismatch, int cp_offset = 0);
74 void CheckNotBackref(int capture_index, Label* on_match, int cp_offset = 0); 80 void CheckNotBackref(int capture_index, Label* on_match, int cp_offset = 0);
75 81
76 // Checks a register for equal, less than or equal, less than, greater than 82 // Checks a register for equal, less than or equal, less than, greater than
77 // or equal, greater than, not equal. 83 // or equal, greater than, not equal.
78 void CheckRegisterEq(int reg_index, uint16_t vs, Label* on_equal);
79 void CheckRegisterLe(int reg_index, uint16_t vs, Label* on_less_equal);
80 void CheckRegisterLt(int reg_index, uint16_t vs, Label* on_less_than); 84 void CheckRegisterLt(int reg_index, uint16_t vs, Label* on_less_than);
81 void CheckRegisterGe(int reg_index, uint16_t vs, Label* on_greater_equal); 85 void CheckRegisterGe(int reg_index, uint16_t vs, Label* on_greater_equal);
82 void CheckRegisterGt(int reg_index, uint16_t vs, Label* on_greater_than);
83 void CheckRegisterNe(int reg_index, uint16_t vs, Label* on_not_equal);
84 86
85 // Code and bitmap emission. 87 // Code and bitmap emission.
86 inline void Emit32(uint32_t x); 88 inline void Emit32(uint32_t x);
87 inline void Emit16(uint32_t x); 89 inline void Emit16(uint32_t x);
88 inline void Emit(uint32_t x); 90 inline void Emit(uint32_t x);
89 91
90 // Bytecode buffer. 92 // Bytecode buffer.
91 int length(); 93 int length();
92 void Copy(Address a); 94 void Copy(Address a);
93 95
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107 // True if the assembler owns the buffer, false if buffer is external. 109 // True if the assembler owns the buffer, false if buffer is external.
108 bool own_buffer_; 110 bool own_buffer_;
109 111
110 inline void EmitOrLink(Label* l); 112 inline void EmitOrLink(Label* l);
111 }; 113 };
112 114
113 115
114 } } // namespace v8::internal 116 } } // namespace v8::internal
115 117
116 #endif // V8_ASSEMBLER_RE2K_H_ 118 #endif // V8_ASSEMBLER_RE2K_H_
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