1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/yarr/YarrJIT.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,172 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + *
1.7 + * Copyright (C) 2009 Apple Inc. All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions
1.11 + * are met:
1.12 + * 1. Redistributions of source code must retain the above copyright
1.13 + * notice, this list of conditions and the following disclaimer.
1.14 + * 2. Redistributions in binary form must reproduce the above copyright
1.15 + * notice, this list of conditions and the following disclaimer in the
1.16 + * documentation and/or other materials provided with the distribution.
1.17 + *
1.18 + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
1.19 + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.20 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.21 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
1.22 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.23 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.24 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.25 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
1.26 + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.27 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.28 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.29 + */
1.30 +
1.31 +#ifndef yarr_YarrJIT_h
1.32 +#define yarr_YarrJIT_h
1.33 +
1.34 +#include "assembler/wtf/Platform.h"
1.35 +
1.36 +#if ENABLE_YARR_JIT
1.37 +
1.38 +#include "assembler/assembler/MacroAssemblerCodeRef.h"
1.39 +
1.40 +#include "yarr/MatchResult.h"
1.41 +#include "yarr/Yarr.h"
1.42 +
1.43 +#if WTF_CPU_X86 && !WTF_COMPILER_MSVC && !WTF_COMPILER_SUNCC
1.44 +#define YARR_CALL __attribute__ ((regparm (3)))
1.45 +#else
1.46 +#define YARR_CALL
1.47 +#endif
1.48 +
1.49 +#include "jit/JitCommon.h"
1.50 +
1.51 +namespace JSC {
1.52 +
1.53 +class JSGlobalData;
1.54 +class ExecutablePool;
1.55 +
1.56 +namespace Yarr {
1.57 +
1.58 +class YarrCodeBlock {
1.59 +#if defined(WTF_CPU_X86_64) && !defined(_WIN64)
1.60 + typedef MatchResult JITMatchResult;
1.61 +#else
1.62 + typedef EncodedMatchResult JITMatchResult;
1.63 +#endif
1.64 +
1.65 + typedef JITMatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
1.66 + typedef JITMatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
1.67 + typedef JITMatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
1.68 + typedef JITMatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
1.69 +
1.70 +public:
1.71 + YarrCodeBlock()
1.72 + : m_needFallBack(false)
1.73 + {
1.74 + }
1.75 +
1.76 + ~YarrCodeBlock()
1.77 + {
1.78 + }
1.79 +
1.80 + void setFallBack(bool fallback) { m_needFallBack = fallback; }
1.81 + bool isFallBack() { return m_needFallBack; }
1.82 +
1.83 +#ifdef YARR_8BIT_CHAR_SUPPORT
1.84 + bool has8BitCode() const { return m_ref8.allocSize(); }
1.85 + void set8BitCode(MacroAssemblerCodeRef ref) { m_ref8 = ref; }
1.86 + bool has8BitCodeMatchOnly() const { return m_matchOnly8.allocSize(); }
1.87 + void set8BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly8 = matchOnly; }
1.88 +#endif
1.89 +
1.90 + bool has16BitCode() const { return m_ref16.allocSize(); }
1.91 + void set16BitCode(MacroAssemblerCodeRef ref) { m_ref16 = ref; }
1.92 +
1.93 + bool has16BitCodeMatchOnly() const { return m_matchOnly16.allocSize(); }
1.94 + void set16BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly16 = matchOnly; }
1.95 +
1.96 +#if YARR_8BIT_CHAR_SUPPORT
1.97 + MatchResult execute(const LChar* input, unsigned start, unsigned length, int* output)
1.98 + {
1.99 + ASSERT(has8BitCode());
1.100 +
1.101 + return MatchResult(reinterpret_cast<YarrJITCode8>(m_ref8.code().executableAddress())(input, start, length, output));
1.102 + }
1.103 +
1.104 + MatchResult execute(const LChar* input, unsigned start, unsigned length)
1.105 + {
1.106 + ASSERT(has8BitCodeMatchOnly());
1.107 +
1.108 + return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly8>(m_matchOnly8.code().executableAddress())(input, start, length));
1.109 + }
1.110 +#endif
1.111 +
1.112 + MatchResult execute(const UChar* input, unsigned start, unsigned length, int* output)
1.113 + {
1.114 + ASSERT(has16BitCode());
1.115 +
1.116 + YarrJITCode16 fn = JS_FUNC_TO_DATA_PTR(YarrJITCode16, m_ref16.code().executableAddress());
1.117 + return MatchResult(CALL_GENERATED_YARR_CODE4(fn, input, start, length, output));
1.118 + }
1.119 +
1.120 + MatchResult execute(const UChar* input, unsigned start, unsigned length)
1.121 + {
1.122 + ASSERT(has16BitCodeMatchOnly());
1.123 +
1.124 + YarrJITCodeMatchOnly16 fn = JS_FUNC_TO_DATA_PTR(YarrJITCodeMatchOnly16, m_matchOnly16.code().executableAddress());
1.125 + return MatchResult(CALL_GENERATED_YARR_CODE3(fn, input, start, length));
1.126 + }
1.127 +
1.128 +#if ENABLE_REGEXP_TRACING
1.129 + void *getAddr() { return m_ref.code().executableAddress(); }
1.130 +#endif
1.131 +
1.132 + void clear()
1.133 + {
1.134 +#ifdef YARR_8BIT_CHAR_SUPPORT
1.135 + m_ref8 = MacroAssemblerCodeRef();
1.136 + m_matchOnly8 = MacroAssemblerCodeRef();
1.137 +#endif
1.138 +
1.139 + m_ref16 = MacroAssemblerCodeRef();
1.140 + m_matchOnly16 = MacroAssemblerCodeRef();
1.141 + m_needFallBack = false;
1.142 + }
1.143 +
1.144 + void release() {
1.145 +#ifdef YARR_8BIT_CHAR_SUPPORT
1.146 + m_ref8.release();
1.147 + m_matchOnly8.release();
1.148 +#endif
1.149 +
1.150 + m_ref16.release();
1.151 + m_matchOnly16.release();
1.152 + }
1.153 +
1.154 +private:
1.155 +#ifdef YARR_8BIT_CHAR_SUPPORT
1.156 + MacroAssemblerCodeRef m_ref8;
1.157 + MacroAssemblerCodeRef m_matchOnly8;
1.158 +#endif
1.159 +
1.160 + MacroAssemblerCodeRef m_ref16;
1.161 + MacroAssemblerCodeRef m_matchOnly16;
1.162 + bool m_needFallBack;
1.163 +};
1.164 +
1.165 +enum YarrJITCompileMode {
1.166 + MatchOnly,
1.167 + IncludeSubpatterns
1.168 +};
1.169 +void jitCompile(YarrPattern&, YarrCharSize, JSGlobalData*, YarrCodeBlock& jitObject, YarrJITCompileMode = IncludeSubpatterns);
1.170 +
1.171 +} } // namespace JSC::Yarr
1.172 +
1.173 +#endif
1.174 +
1.175 +#endif /* yarr_YarrJIT_h */
