1/* 2 * Copyright (C) 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 "FTLExitThunkGenerator.h" 28 29#if ENABLE(FTL_JIT) 30 31#include "FTLOSRExitCompilationInfo.h" 32#include "FTLState.h" 33 34namespace JSC { namespace FTL { 35 36using namespace JSC::DFG; 37 38ExitThunkGenerator::ExitThunkGenerator(State& state) 39 : CCallHelpers(&state.graph.m_vm, state.graph.m_codeBlock) 40 , m_state(state) 41 , m_didThings(false) 42{ 43} 44 45ExitThunkGenerator::~ExitThunkGenerator() 46{ 47} 48 49void ExitThunkGenerator::emitThunk(unsigned index) 50{ 51 OSRExitCompilationInfo& info = m_state.finalizer->osrExit[index]; 52 53 info.m_thunkLabel = label(); 54 pushToSaveImmediateWithoutTouchingRegisters(TrustedImm32(index)); 55 info.m_thunkJump = patchableJump(); 56 57 m_didThings = true; 58} 59 60void ExitThunkGenerator::emitThunks() 61{ 62 for (unsigned i = 0; i < m_state.finalizer->osrExit.size(); ++i) 63 emitThunk(i); 64} 65 66} } // namespace JSC::FTL 67 68#endif // ENABLE(FTL_JIT) 69 70