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 "CCallHelpers.h"
31#include "SnippetOperand.h"
32
33namespace JSC {
34
35class JITDivGenerator {
36public:
37 JITDivGenerator(SnippetOperand leftOperand, SnippetOperand rightOperand,
38 JSValueRegs result, JSValueRegs left, JSValueRegs right,
39 FPRReg leftFPR, FPRReg rightFPR, GPRReg scratchGPR, FPRReg scratchFPR,
40 ArithProfile* arithProfile = nullptr)
41 : m_leftOperand(leftOperand)
42 , m_rightOperand(rightOperand)
43 , m_result(result)
44 , m_left(left)
45 , m_right(right)
46 , m_leftFPR(leftFPR)
47 , m_rightFPR(rightFPR)
48 , m_scratchGPR(scratchGPR)
49 , m_scratchFPR(scratchFPR)
50 , m_arithProfile(arithProfile)
51 {
52 ASSERT(!m_leftOperand.isConstInt32() || !m_rightOperand.isConstInt32());
53 }
54
55 void generateFastPath(CCallHelpers&);
56
57 bool didEmitFastPath() const { return m_didEmitFastPath; }
58 CCallHelpers::JumpList& endJumpList() { return m_endJumpList; }
59 CCallHelpers::JumpList& slowPathJumpList() { return m_slowPathJumpList; }
60
61private:
62 void loadOperand(CCallHelpers&, SnippetOperand&, JSValueRegs opRegs, FPRReg destFPR);
63
64 SnippetOperand m_leftOperand;
65 SnippetOperand m_rightOperand;
66 JSValueRegs m_result;
67 JSValueRegs m_left;
68 JSValueRegs m_right;
69 FPRReg m_leftFPR;
70 FPRReg m_rightFPR;
71 GPRReg m_scratchGPR;
72 FPRReg m_scratchFPR;
73 bool m_didEmitFastPath { false };
74 ArithProfile* m_arithProfile;
75
76 CCallHelpers::JumpList m_endJumpList;
77 CCallHelpers::JumpList m_slowPathJumpList;
78};
79
80} // namespace JSC
81
82#endif // ENABLE(JIT)
83