| // Copyright 2008-2009 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // A light-weight assembler for the Irregexp byte code. |
| |
| |
| #include "v8.h" |
| #include "ast.h" |
| #include "bytecodes-irregexp.h" |
| |
| #ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_ |
| #define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_ |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte, |
| uint32_t twenty_four_bits) { |
| uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte); |
| ASSERT(pc_ <= buffer_.length()); |
| if (pc_ + 3 >= buffer_.length()) { |
| Expand(); |
| } |
| *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word; |
| pc_ += 4; |
| } |
| |
| |
| void RegExpMacroAssemblerIrregexp::Emit16(uint32_t word) { |
| ASSERT(pc_ <= buffer_.length()); |
| if (pc_ + 1 >= buffer_.length()) { |
| Expand(); |
| } |
| *reinterpret_cast<uint16_t*>(buffer_.start() + pc_) = word; |
| pc_ += 2; |
| } |
| |
| |
| void RegExpMacroAssemblerIrregexp::Emit32(uint32_t word) { |
| ASSERT(pc_ <= buffer_.length()); |
| if (pc_ + 3 >= buffer_.length()) { |
| Expand(); |
| } |
| *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word; |
| pc_ += 4; |
| } |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_ |