1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef YarrJIT_h 27 #define YarrJIT_h 28 29 #if ENABLE(YARR_JIT) 30 31 #include "JSGlobalData.h" 32 #include "MacroAssembler.h" 33 #include "UString.h" 34 #include "YarrPattern.h" 35 36 #if CPU(X86) && !COMPILER(MSVC) 37 #define YARR_CALL __attribute__ ((regparm (3))) 38 #else 39 #define YARR_CALL 40 #endif 41 42 namespace JSC { 43 44 class JSGlobalData; 45 class ExecutablePool; 46 47 namespace Yarr { 48 49 class YarrCodeBlock { 50 typedef int (*YarrJITCode)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL; 51 52 public: YarrCodeBlock()53 YarrCodeBlock() 54 : m_needFallBack(false) 55 { 56 } 57 ~YarrCodeBlock()58 ~YarrCodeBlock() 59 { 60 } 61 setFallBack(bool fallback)62 void setFallBack(bool fallback) { m_needFallBack = fallback; } isFallBack()63 bool isFallBack() { return m_needFallBack; } set(MacroAssembler::CodeRef ref)64 void set(MacroAssembler::CodeRef ref) { m_ref = ref; } 65 execute(const UChar * input,unsigned start,unsigned length,int * output)66 int execute(const UChar* input, unsigned start, unsigned length, int* output) 67 { 68 return reinterpret_cast<YarrJITCode>(m_ref.m_code.executableAddress())(input, start, length, output); 69 } 70 71 #if ENABLE(REGEXP_TRACING) getAddr()72 void *getAddr() { return m_ref.m_code.executableAddress(); } 73 #endif 74 75 private: 76 MacroAssembler::CodeRef m_ref; 77 bool m_needFallBack; 78 }; 79 80 void jitCompile(YarrPattern&, JSGlobalData*, YarrCodeBlock& jitObject); 81 int execute(YarrCodeBlock& jitObject, const UChar* input, unsigned start, unsigned length, int* output); 82 83 } } // namespace JSC::Yarr 84 85 #endif 86 87 #endif // YarrJIT_h 88