llint/LLIntEntrypoints.cpp

   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 #include "config.h"
  27 #include "LLIntEntrypoints.h"
  28
  29 #if ENABLE(LLINT)
  30
  31 #include "JITCode.h"
  32 #include "JSGlobalData.h"
  33 #include "JSObject.h"
  34 #include "LLIntThunks.h"
  35 #include "LowLevelInterpreter.h"
  36 #include "ScopeChain.h"
  37
  38 namespace JSC { namespace LLInt {
  39
  40 void getFunctionEntrypoint(JSGlobalData& globalData, CodeSpecializationKind kind, JITCode& jitCode, MacroAssemblerCodePtr& arityCheck)
  41 {
  42     if (!globalData.canUseJIT()) {
  43         if (kind == CodeForCall) {
  44             jitCode = JITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_call_prologue), JITCode::InterpreterThunk);
  45             arityCheck = MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_call_arity_check);
  46             return;
  47         }
  48
  49         ASSERT(kind == CodeForConstruct);
  50         jitCode = JITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_construct_prologue), JITCode::InterpreterThunk);
  51         arityCheck = MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_construct_arity_check);
  52         return;
  53     }
  54
  55     if (kind == CodeForCall) {
  56         jitCode = JITCode(globalData.getCTIStub(functionForCallEntryThunkGenerator), JITCode::InterpreterThunk);
  57         arityCheck = globalData.getCTIStub(functionForCallArityCheckThunkGenerator).code();
  58         return;
  59     }
  60
  61     ASSERT(kind == CodeForConstruct);
  62     jitCode = JITCode(globalData.getCTIStub(functionForConstructEntryThunkGenerator), JITCode::InterpreterThunk);
  63     arityCheck = globalData.getCTIStub(functionForConstructArityCheckThunkGenerator).code();
  64 }
  65
  66 void getEvalEntrypoint(JSGlobalData& globalData, JITCode& jitCode)
  67 {
  68     if (!globalData.canUseJIT()) {
  69         jitCode = JITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_eval_prologue), JITCode::InterpreterThunk);
  70         return;
  71     }
  72
  73     jitCode = JITCode(globalData.getCTIStub(evalEntryThunkGenerator), JITCode::InterpreterThunk);
  74 }
  75
  76 void getProgramEntrypoint(JSGlobalData& globalData, JITCode& jitCode)
  77 {
  78     if (!globalData.canUseJIT()) {
  79         jitCode = JITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_program_prologue), JITCode::InterpreterThunk);
  80         return;
  81     }
  82
  83     jitCode = JITCode(globalData.getCTIStub(programEntryThunkGenerator), JITCode::InterpreterThunk);
  84 }
  85
  86 } } // namespace JSC::LLInt
  87
  88 #endif // ENABLE(LLINT)