runtime/ExecutionHarness.h

   1 /*
   2  * Copyright (C) 2012 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 ExecutionHarness_h
  27 #define ExecutionHarness_h
  28
  29 #include <wtf/Platform.h>
  30
  31 #if ENABLE(JIT)
  32
  33 #include "JITDriver.h"
  34 #include "LLIntEntrypoints.h"
  35
  36 namespace JSC {
  37
  38 template<typename CodeBlockType>
  39 inline bool prepareForExecution(ExecState* exec, OwnPtr<CodeBlockType>& codeBlock, JITCode& jitCode, JITCode::JITType jitType, unsigned bytecodeIndex)
  40 {
  41 #if ENABLE(LLINT)
  42     if (JITCode::isBaselineCode(jitType)) {
  43         // Start off in the low level interpreter.
  44         LLInt::getEntrypoint(exec->vm(), codeBlock.get(), jitCode);
  45         codeBlock->setJITCode(jitCode, MacroAssemblerCodePtr());
  46         if (exec->vm().m_perBytecodeProfiler)
  47             exec->vm().m_perBytecodeProfiler->ensureBytecodesFor(codeBlock.get());
  48         return true;
  49     }
  50 #endif // ENABLE(LLINT)
  51     return jitCompileIfAppropriate(exec, codeBlock, jitCode, jitType, bytecodeIndex, JITCode::isBaselineCode(jitType) ? JITCompilationMustSucceed : JITCompilationCanFail);
  52 }
  53
  54 inline bool prepareFunctionForExecution(ExecState* exec, OwnPtr<FunctionCodeBlock>& codeBlock, JITCode& jitCode, MacroAssemblerCodePtr& jitCodeWithArityCheck, JITCode::JITType jitType, unsigned bytecodeIndex, CodeSpecializationKind kind)
  55 {
  56 #if ENABLE(LLINT)
  57     if (JITCode::isBaselineCode(jitType)) {
  58         // Start off in the low level interpreter.
  59         LLInt::getFunctionEntrypoint(exec->vm(), kind, jitCode, jitCodeWithArityCheck);
  60         codeBlock->setJITCode(jitCode, jitCodeWithArityCheck);
  61         if (exec->vm().m_perBytecodeProfiler)
  62             exec->vm().m_perBytecodeProfiler->ensureBytecodesFor(codeBlock.get());
  63         return true;
  64     }
  65 #else
  66     UNUSED_PARAM(kind);
  67 #endif // ENABLE(LLINT)
  68     return jitCompileFunctionIfAppropriate(exec, codeBlock, jitCode, jitCodeWithArityCheck, jitType, bytecodeIndex, JITCode::isBaselineCode(jitType) ? JITCompilationMustSucceed : JITCompilationCanFail);
  69 }
  70
  71 } // namespace JSC
  72
  73 #endif // ENABLE(JIT)
  74
  75 #endif // ExecutionHarness_h
  76