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#pragma once
27
28#if ENABLE(JIT)
29
30#include "JITBitBinaryOpGenerator.h"
31
32namespace JSC {
33
34class JITRightShiftGenerator : public JITBitBinaryOpGenerator {
35public:
36 enum ShiftType {
37 SignedShift,
38 UnsignedShift
39 };
40
41 JITRightShiftGenerator(const SnippetOperand& leftOperand, const SnippetOperand& rightOperand,
42 JSValueRegs result, JSValueRegs left, JSValueRegs right,
43 FPRReg leftFPR, GPRReg scratchGPR, FPRReg scratchFPR, ShiftType type = SignedShift)
44 : JITBitBinaryOpGenerator(leftOperand, rightOperand, result, left, right, scratchGPR)
45 , m_shiftType(type)
46 , m_leftFPR(leftFPR)
47 , m_scratchFPR(scratchFPR)
48 { }
49
50 void generateFastPath(CCallHelpers&);
51
52private:
53 ShiftType m_shiftType;
54 FPRReg m_leftFPR;
55 FPRReg m_scratchFPR;
56};
57
58} // namespace JSC
59
60#endif // ENABLE(JIT)
61