1/* 2 * Copyright (C) 2012, 2013 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 "LLIntEntrypoint.h" 28#include "CodeBlock.h" 29#include "HeapInlines.h" 30#include "JITCode.h" 31#include "JSObject.h" 32#include "LLIntThunks.h" 33#include "LowLevelInterpreter.h" 34#include "MaxFrameExtentForSlowPathCall.h" 35#include "StackAlignment.h" 36#include "VM.h" 37 38namespace JSC { namespace LLInt { 39 40static void setFunctionEntrypoint(VM& vm, CodeBlock* codeBlock) 41{ 42 CodeSpecializationKind kind = codeBlock->specializationKind(); 43 44#if ENABLE(JIT) 45 if (vm.canUseJIT()) { 46 if (kind == CodeForCall) { 47 codeBlock->setJITCode( 48 adoptRef(new DirectJITCode(vm.getCTIStub(functionForCallEntryThunkGenerator), vm.getCTIStub(functionForCallArityCheckThunkGenerator).code(), JITCode::InterpreterThunk))); 49 return; 50 } 51 ASSERT(kind == CodeForConstruct); 52 codeBlock->setJITCode( 53 adoptRef(new DirectJITCode(vm.getCTIStub(functionForConstructEntryThunkGenerator), vm.getCTIStub(functionForConstructArityCheckThunkGenerator).code(), JITCode::InterpreterThunk))); 54 return; 55 } 56#endif // ENABLE(JIT) 57 58 UNUSED_PARAM(vm); 59 if (kind == CodeForCall) { 60 codeBlock->setJITCode( 61 adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_call_prologue), MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_call_arity_check), JITCode::InterpreterThunk))); 62 return; 63 } 64 ASSERT(kind == CodeForConstruct); 65 codeBlock->setJITCode( 66 adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_construct_prologue), MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_construct_arity_check), JITCode::InterpreterThunk))); 67} 68 69static void setEvalEntrypoint(VM& vm, CodeBlock* codeBlock) 70{ 71#if ENABLE(JIT) 72 if (vm.canUseJIT()) { 73 codeBlock->setJITCode( 74 adoptRef(new DirectJITCode(vm.getCTIStub(evalEntryThunkGenerator), MacroAssemblerCodePtr(), JITCode::InterpreterThunk))); 75 return; 76 } 77#endif // ENABLE(JIT) 78 79 UNUSED_PARAM(vm); 80 codeBlock->setJITCode( 81 adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_eval_prologue), MacroAssemblerCodePtr(), JITCode::InterpreterThunk))); 82} 83 84static void setProgramEntrypoint(VM& vm, CodeBlock* codeBlock) 85{ 86#if ENABLE(JIT) 87 if (vm.canUseJIT()) { 88 codeBlock->setJITCode( 89 adoptRef(new DirectJITCode(vm.getCTIStub(programEntryThunkGenerator), MacroAssemblerCodePtr(), JITCode::InterpreterThunk))); 90 return; 91 } 92#endif // ENABLE(JIT) 93 94 UNUSED_PARAM(vm); 95 codeBlock->setJITCode( 96 adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_program_prologue), MacroAssemblerCodePtr(), JITCode::InterpreterThunk))); 97} 98 99void setEntrypoint(VM& vm, CodeBlock* codeBlock) 100{ 101 switch (codeBlock->codeType()) { 102 case GlobalCode: 103 setProgramEntrypoint(vm, codeBlock); 104 return; 105 case EvalCode: 106 setEvalEntrypoint(vm, codeBlock); 107 return; 108 case FunctionCode: 109 setFunctionEntrypoint(vm, codeBlock); 110 return; 111 } 112 113 RELEASE_ASSERT_NOT_REACHED(); 114} 115 116unsigned frameRegisterCountFor(CodeBlock* codeBlock) 117{ 118 ASSERT(static_cast<unsigned>(codeBlock->m_numCalleeRegisters) == WTF::roundUpToMultipleOf(stackAlignmentRegisters(), static_cast<unsigned>(codeBlock->m_numCalleeRegisters))); 119 120 return roundLocalRegisterCountForFramePointerOffset(codeBlock->m_numCalleeRegisters + maxFrameExtentForSlowPathCallInRegisters); 121} 122 123} } // namespace JSC::LLInt 124