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regexp-macro-assembler-irregexp-inl.h
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27 
28 // A light-weight assembler for the Irregexp byte code.
29 
30 
31 #include "v8.h"
32 #include "ast.h"
33 #include "bytecodes-irregexp.h"
34 
35 #ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
36 #define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
37 
38 namespace v8 {
39 namespace internal {
40 
41 #ifdef V8_INTERPRETED_REGEXP
42 
43 void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte,
44  uint32_t twenty_four_bits) {
45  uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte);
46  ASSERT(pc_ <= buffer_.length());
47  if (pc_ + 3 >= buffer_.length()) {
48  Expand();
49  }
50  *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
51  pc_ += 4;
52 }
53 
54 
55 void RegExpMacroAssemblerIrregexp::Emit16(uint32_t word) {
56  ASSERT(pc_ <= buffer_.length());
57  if (pc_ + 1 >= buffer_.length()) {
58  Expand();
59  }
60  *reinterpret_cast<uint16_t*>(buffer_.start() + pc_) = word;
61  pc_ += 2;
62 }
63 
64 
65 void RegExpMacroAssemblerIrregexp::Emit8(uint32_t word) {
66  ASSERT(pc_ <= buffer_.length());
67  if (pc_ == buffer_.length()) {
68  Expand();
69  }
70  *reinterpret_cast<unsigned char*>(buffer_.start() + pc_) = word;
71  pc_ += 1;
72 }
73 
74 
75 void RegExpMacroAssemblerIrregexp::Emit32(uint32_t word) {
76  ASSERT(pc_ <= buffer_.length());
77  if (pc_ + 3 >= buffer_.length()) {
78  Expand();
79  }
80  *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
81  pc_ += 4;
82 }
83 
84 #endif // V8_INTERPRETED_REGEXP
85 
86 } } // namespace v8::internal
87 
88 #endif // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
#define ASSERT(condition)
Definition: checks.h:329
unsigned short uint16_t
Definition: unicode.cc:46
uint8_t byte
Definition: globals.h:185
const int BYTECODE_SHIFT