1// Copyright 2008-2009 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
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7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
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11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
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15//
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17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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
38namespace v8 {
39namespace internal {
40
41#ifdef V8_INTERPRETED_REGEXP
42
43void 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
55void 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
65void RegExpMacroAssemblerIrregexp::Emit32(uint32_t word) {
66  ASSERT(pc_ <= buffer_.length());
67  if (pc_ + 3 >= buffer_.length()) {
68    Expand();
69  }
70  *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
71  pc_ += 4;
72}
73
74#endif  // V8_INTERPRETED_REGEXP
75
76} }  // namespace v8::internal
77
78#endif  // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
79