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 // 6 // * Redistributions of source code must retain the above copyright 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 10 // disclaimer in the documentation and/or other materials provided 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 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 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 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_ 89
