The Tor Browser: js/src/yarr/YarrJIT.h@6474c204b198 (annotated)

js/src/yarr/YarrJIT.h@6474c204b198 (annotated)

js/src/yarr/YarrJIT.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: set ts=8 sts=4 et sw=4 tw=99:
  *
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #ifndef yarr_YarrJIT_h
 #define yarr_YarrJIT_h
 #include "assembler/wtf/Platform.h"
 #if ENABLE_YARR_JIT
 #include "assembler/assembler/MacroAssemblerCodeRef.h"
 #include "yarr/MatchResult.h"
 #include "yarr/Yarr.h"
 #if WTF_CPU_X86 && !WTF_COMPILER_MSVC && !WTF_COMPILER_SUNCC
 #define YARR_CALL __attribute__ ((regparm (3)))
 #else
 #define YARR_CALL
 #endif
 #include "jit/JitCommon.h"
 namespace JSC {
 class JSGlobalData;
 class ExecutablePool;
 namespace Yarr {
 class YarrCodeBlock {
 #if defined(WTF_CPU_X86_64) && !defined(_WIN64)
     typedef MatchResult JITMatchResult;
 #else
     typedef EncodedMatchResult JITMatchResult;
 #endif
     typedef JITMatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
     typedef JITMatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
     typedef JITMatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
     typedef JITMatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
 public:
     YarrCodeBlock()
         : m_needFallBack(false)
     {
     }
     ~YarrCodeBlock()
     {
     }
     void setFallBack(bool fallback) { m_needFallBack = fallback; }
     bool isFallBack() { return m_needFallBack; }
 #ifdef YARR_8BIT_CHAR_SUPPORT
     bool has8BitCode() const { return m_ref8.allocSize(); }
     void set8BitCode(MacroAssemblerCodeRef ref) { m_ref8 = ref; }
     bool has8BitCodeMatchOnly() const { return m_matchOnly8.allocSize(); }
     void set8BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly8 = matchOnly; }
 #endif
     bool has16BitCode() const { return m_ref16.allocSize(); }
     void set16BitCode(MacroAssemblerCodeRef ref) { m_ref16 = ref; }
     bool has16BitCodeMatchOnly() const { return m_matchOnly16.allocSize(); }
     void set16BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly16 = matchOnly; }
 #if YARR_8BIT_CHAR_SUPPORT
     MatchResult execute(const LChar* input, unsigned start, unsigned length, int* output)
     {
         ASSERT(has8BitCode());
         return MatchResult(reinterpret_cast<YarrJITCode8>(m_ref8.code().executableAddress())(input, start, length, output));
     }
     MatchResult execute(const LChar* input, unsigned start, unsigned length)
     {
         ASSERT(has8BitCodeMatchOnly());
         return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly8>(m_matchOnly8.code().executableAddress())(input, start, length));
     }
 #endif
     MatchResult execute(const UChar* input, unsigned start, unsigned length, int* output)
     {
         ASSERT(has16BitCode());
         YarrJITCode16 fn = JS_FUNC_TO_DATA_PTR(YarrJITCode16, m_ref16.code().executableAddress());
         return MatchResult(CALL_GENERATED_YARR_CODE4(fn, input, start, length, output));
     }
     MatchResult execute(const UChar* input, unsigned start, unsigned length)
     {
         ASSERT(has16BitCodeMatchOnly());
         YarrJITCodeMatchOnly16 fn = JS_FUNC_TO_DATA_PTR(YarrJITCodeMatchOnly16, m_matchOnly16.code().executableAddress());
         return MatchResult(CALL_GENERATED_YARR_CODE3(fn, input, start, length));
     }
 #if ENABLE_REGEXP_TRACING
     void *getAddr() { return m_ref.code().executableAddress(); }
 #endif
     void clear()
     {
 #ifdef YARR_8BIT_CHAR_SUPPORT
         m_ref8 = MacroAssemblerCodeRef();
         m_matchOnly8 = MacroAssemblerCodeRef();
 #endif
         m_ref16 = MacroAssemblerCodeRef();
         m_matchOnly16 = MacroAssemblerCodeRef();
         m_needFallBack = false;
     }
     void release() {
 #ifdef YARR_8BIT_CHAR_SUPPORT
         m_ref8.release();
         m_matchOnly8.release();
 #endif
         m_ref16.release();
         m_matchOnly16.release();
     }
 private:
 #ifdef YARR_8BIT_CHAR_SUPPORT
     MacroAssemblerCodeRef m_ref8;
     MacroAssemblerCodeRef m_matchOnly8;
 #endif
     MacroAssemblerCodeRef m_ref16;
     MacroAssemblerCodeRef m_matchOnly16;
     bool m_needFallBack;
 };
 enum YarrJITCompileMode {
     MatchOnly,
     IncludeSubpatterns
 };
 void jitCompile(YarrPattern&, YarrCharSize, JSGlobalData*, YarrCodeBlock& jitObject, YarrJITCompileMode = IncludeSubpatterns);
 } } // namespace JSC::Yarr
 #endif
 #endif /* yarr_YarrJIT_h */

The Tor Browser / annotate

js/src/yarr/YarrJIT.h@6474c204b198 (annotated)

js/src/yarr/YarrJIT.h