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