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66 lines
1.6 KiB
66 lines
1.6 KiB
// Copyright 2008-2009 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// A light-weight assembler for the Irregexp byte code.
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#include "src/v8.h"
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#include "src/ast.h"
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#include "src/bytecodes-irregexp.h"
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#ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
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#define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
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namespace v8 {
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namespace internal {
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#ifdef V8_INTERPRETED_REGEXP
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void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte,
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uint32_t twenty_four_bits) {
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uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte);
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DCHECK(pc_ <= buffer_.length());
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if (pc_ + 3 >= buffer_.length()) {
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Expand();
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}
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*reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
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pc_ += 4;
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}
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void RegExpMacroAssemblerIrregexp::Emit16(uint32_t word) {
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DCHECK(pc_ <= buffer_.length());
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if (pc_ + 1 >= buffer_.length()) {
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Expand();
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}
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*reinterpret_cast<uint16_t*>(buffer_.start() + pc_) = word;
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pc_ += 2;
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}
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void RegExpMacroAssemblerIrregexp::Emit8(uint32_t word) {
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DCHECK(pc_ <= buffer_.length());
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if (pc_ == buffer_.length()) {
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Expand();
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}
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*reinterpret_cast<unsigned char*>(buffer_.start() + pc_) = word;
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pc_ += 1;
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}
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void RegExpMacroAssemblerIrregexp::Emit32(uint32_t word) {
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DCHECK(pc_ <= buffer_.length());
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if (pc_ + 3 >= buffer_.length()) {
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Expand();
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}
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*reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
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pc_ += 4;
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}
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#endif // V8_INTERPRETED_REGEXP
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} } // namespace v8::internal
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#endif // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
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