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#ifndef FTLSaveRestore_h 27#define FTLSaveRestore_h 28 29#if ENABLE(FTL_JIT) 30 31#include "FPRInfo.h" 32#include "GPRInfo.h" 33#include "Reg.h" 34 35namespace JSC { 36 37class MacroAssembler; 38 39namespace FTL { 40 41size_t requiredScratchMemorySizeInBytes(); 42 43size_t offsetOfReg(Reg); 44size_t offsetOfGPR(GPRReg); 45size_t offsetOfFPR(FPRReg); 46 47// Assumes that top-of-stack can be used as a pointer-sized scratchpad. Saves all of 48// the registers into the scratch buffer such that RegisterID * sizeof(int64_t) is the 49// offset of every register. 50void saveAllRegisters(MacroAssembler& jit, char* scratchMemory); 51 52void restoreAllRegisters(MacroAssembler& jit, char* scratchMemory); 53 54} } // namespace JSC::FTL 55 56#endif // ENABLE(FTL_JIT) 57 58#endif // FTLSaveRestore_h 59 60