1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 * Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#if ENABLE(JIT)
30
31#include "CCallHelpers.h"
32#include "SnippetReg.h"
33#include "SnippetSlowPathCalls.h"
34
35namespace JSC {
36
37class SnippetParams {
38WTF_MAKE_NONCOPYABLE(SnippetParams);
39public:
40 virtual ~SnippetParams() { }
41
42 class Value {
43 public:
44 Value(SnippetReg reg)
45 : m_reg(reg)
46 {
47 }
48
49 Value(SnippetReg reg, JSValue value)
50 : m_reg(reg)
51 , m_value(value)
52 {
53 }
54
55 bool isGPR() const { return m_reg.isGPR(); }
56 bool isFPR() const { return m_reg.isFPR(); }
57 bool isJSValueRegs() const { return m_reg.isJSValueRegs(); }
58 GPRReg gpr() const { return m_reg.gpr(); }
59 FPRReg fpr() const { return m_reg.fpr(); }
60 JSValueRegs jsValueRegs() const { return m_reg.jsValueRegs(); }
61
62 SnippetReg reg() const
63 {
64 return m_reg;
65 }
66
67 JSValue value() const
68 {
69 return m_value;
70 }
71
72 private:
73 SnippetReg m_reg;
74 JSValue m_value;
75 };
76
77 unsigned size() const { return m_regs.size(); }
78 const Value& at(unsigned index) const { return m_regs[index]; }
79 const Value& operator[](unsigned index) const { return at(index); }
80
81 GPRReg gpScratch(unsigned index) const { return m_gpScratch[index]; }
82 FPRReg fpScratch(unsigned index) const { return m_fpScratch[index]; }
83
84 SnippetParams(VM& vm, Vector<Value>&& regs, Vector<GPRReg>&& gpScratch, Vector<FPRReg>&& fpScratch)
85 : m_vm(vm)
86 , m_regs(WTFMove(regs))
87 , m_gpScratch(WTFMove(gpScratch))
88 , m_fpScratch(WTFMove(fpScratch))
89 {
90 }
91
92 VM& vm() { return m_vm; }
93
94 template<typename FunctionType, typename ResultType, typename... Arguments>
95 void addSlowPathCall(CCallHelpers::JumpList from, CCallHelpers& jit, FunctionType function, ResultType result, Arguments... arguments)
96 {
97 addSlowPathCallImpl(from, jit, function, result, std::make_tuple(arguments...));
98 }
99
100private:
101#define JSC_DEFINE_CALL_OPERATIONS(OperationType, ResultType, ...) JS_EXPORT_PRIVATE virtual void addSlowPathCallImpl(CCallHelpers::JumpList, CCallHelpers&, OperationType, ResultType, std::tuple<__VA_ARGS__> args) = 0;
102 SNIPPET_SLOW_PATH_CALLS(JSC_DEFINE_CALL_OPERATIONS)
103#undef JSC_DEFINE_CALL_OPERATIONS
104
105 VM& m_vm;
106 Vector<Value> m_regs;
107 Vector<GPRReg> m_gpScratch;
108 Vector<FPRReg> m_fpScratch;
109};
110
111}
112
113#endif
114