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 "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:
  53     YarrCodeBlock()
  54         : m_needFallBack(false)
  55     {
  56     }
  57
  58     ~YarrCodeBlock()
  59     {
  60     }
  61
  62     void setFallBack(bool fallback) { m_needFallBack = fallback; }
  63     bool isFallBack() { return m_needFallBack; }
  64     void set(MacroAssembler::CodeRef ref) { m_ref = ref; }
  65
  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)
  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