yarr/YarrJIT.h

   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 "VM.h"
  32 #include "MacroAssemblerCodeRef.h"
  33 #include "MatchResult.h"
  34 #include "Yarr.h"
  35 #include "YarrPattern.h"
  36
  37 #if CPU(X86) && !COMPILER(MSVC)
  38 #define YARR_CALL __attribute__ ((regparm (3)))
  39 #else
  40 #define YARR_CALL
  41 #endif
  42
  43 namespace JSC {
  44
  45 class VM;
  46 class ExecutablePool;
  47
  48 namespace Yarr {
  49
  50 class YarrCodeBlock {
  51 #if CPU(X86_64) || CPU(ARM64)
  52     typedef MatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
  53     typedef MatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
  54     typedef MatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
  55     typedef MatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
  56 #else
  57     typedef EncodedMatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
  58     typedef EncodedMatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
  59     typedef EncodedMatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
  60     typedef EncodedMatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
  61 #endif
  62
  63 public:
  64     YarrCodeBlock()
  65         : m_needFallBack(false)
  66     {
  67     }
  68
  69     ~YarrCodeBlock()
  70     {
  71     }
  72
  73     void setFallBack(bool fallback) { m_needFallBack = fallback; }
  74     bool isFallBack() { return m_needFallBack; }
  75
  76     bool has8BitCode() { return m_ref8.size(); }
  77     bool has16BitCode() { return m_ref16.size(); }
  78     void set8BitCode(MacroAssemblerCodeRef ref) { m_ref8 = ref; }
  79     void set16BitCode(MacroAssemblerCodeRef ref) { m_ref16 = ref; }
  80
  81     bool has8BitCodeMatchOnly() { return m_matchOnly8.size(); }
  82     bool has16BitCodeMatchOnly() { return m_matchOnly16.size(); }
  83     void set8BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly8 = matchOnly; }
  84     void set16BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly16 = matchOnly; }
  85
  86     MatchResult execute(const LChar* input, unsigned start, unsigned length, int* output)
  87     {
  88         ASSERT(has8BitCode());
  89         return MatchResult(reinterpret_cast<YarrJITCode8>(m_ref8.code().executableAddress())(input, start, length, output));
  90     }
  91
  92     MatchResult execute(const UChar* input, unsigned start, unsigned length, int* output)
  93     {
  94         ASSERT(has16BitCode());
  95         return MatchResult(reinterpret_cast<YarrJITCode16>(m_ref16.code().executableAddress())(input, start, length, output));
  96     }
  97
  98     MatchResult execute(const LChar* input, unsigned start, unsigned length)
  99     {
 100         ASSERT(has8BitCodeMatchOnly());
 101         return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly8>(m_matchOnly8.code().executableAddress())(input, start, length));
 102     }
 103
 104     MatchResult execute(const UChar* input, unsigned start, unsigned length)
 105     {
 106         ASSERT(has16BitCodeMatchOnly());
 107         return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly16>(m_matchOnly16.code().executableAddress())(input, start, length));
 108     }
 109
 110 #if ENABLE(REGEXP_TRACING)
 111     void *get8BitMatchOnlyAddr()
 112     {
 113         if (!has8BitCodeMatchOnly())
 114             return 0;
 115
 116         return m_matchOnly8.code().executableAddress();
 117     }
 118
 119     void *get16BitMatchOnlyAddr()
 120     {
 121         if (!has16BitCodeMatchOnly())
 122             return 0;
 123
 124         return m_matchOnly16.code().executableAddress();
 125     }
 126
 127     void *get8BitMatchAddr()
 128     {
 129         if (!has8BitCode())
 130             return 0;
 131
 132         return m_ref8.code().executableAddress();
 133     }
 134
 135     void *get16BitMatchAddr()
 136     {
 137         if (!has16BitCode())
 138             return 0;
 139
 140         return m_ref16.code().executableAddress();
 141     }
 142 #endif
 143
 144     void clear()
 145     {
 146         m_ref8 = MacroAssemblerCodeRef();
 147         m_ref16 = MacroAssemblerCodeRef();
 148         m_matchOnly8 = MacroAssemblerCodeRef();
 149         m_matchOnly16 = MacroAssemblerCodeRef();
 150         m_needFallBack = false;
 151     }
 152
 153 private:
 154     MacroAssemblerCodeRef m_ref8;
 155     MacroAssemblerCodeRef m_ref16;
 156     MacroAssemblerCodeRef m_matchOnly8;
 157     MacroAssemblerCodeRef m_matchOnly16;
 158     bool m_needFallBack;
 159 };
 160
 161 enum YarrJITCompileMode {
 162     MatchOnly,
 163     IncludeSubpatterns
 164 };
 165 void jitCompile(YarrPattern&, YarrCharSize, VM*, YarrCodeBlock& jitObject, YarrJITCompileMode = IncludeSubpatterns);
 166
 167 } } // namespace JSC::Yarr
 168
 169 #endif
 170
 171 #endif // YarrJIT_h