1/*
2 * Copyright (C) 2015 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 "CallFrameShuffleData.h"
28
29#if ENABLE(JIT)
30
31#include "CCallHelpers.h"
32#include "CodeBlock.h"
33
34namespace JSC {
35
36#if USE(JSVALUE64)
37
38void CallFrameShuffleData::setupCalleeSaveRegisters(CodeBlock* codeBlock)
39{
40 RegisterSet calleeSaveRegisters { RegisterSet::vmCalleeSaveRegisters() };
41 const RegisterAtOffsetList* registerSaveLocations = codeBlock->calleeSaveRegisters();
42
43 for (size_t i = 0; i < registerSaveLocations->size(); ++i) {
44 RegisterAtOffset entry { registerSaveLocations->at(i) };
45 if (!calleeSaveRegisters.get(entry.reg()))
46 continue;
47
48 VirtualRegister saveSlot { entry.offsetAsIndex() };
49 registers[entry.reg()]
50 = ValueRecovery::displacedInJSStack(saveSlot, DataFormatJS);
51 }
52
53 for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) {
54 if (!calleeSaveRegisters.get(reg))
55 continue;
56
57 if (registers[reg])
58 continue;
59
60 registers[reg] = ValueRecovery::inRegister(reg, DataFormatJS);
61 }
62}
63
64#endif // USE(JSVALUE64)
65
66} // namespace JSC
67
68#endif // ENABLE(JIT)
69