1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* Copyright (C) 2013-2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FTLSlowPathCall_h
#define FTLSlowPathCall_h
#if ENABLE(FTL_JIT)
#include "CCallHelpers.h"
#include "FTLSlowPathCallKey.h"
#include "JITOperations.h"
#include "StructureStubInfo.h"
namespace JSC { namespace FTL {
class State;
class SlowPathCall {
public:
SlowPathCall() { }
SlowPathCall(MacroAssembler::Call call, const SlowPathCallKey& key)
: m_call(call)
, m_key(key)
{
}
MacroAssembler::Call call() const { return m_call; }
SlowPathCallKey key() const { return m_key; }
private:
MacroAssembler::Call m_call;
SlowPathCallKey m_key;
};
// This will be an RAII thingy that will set up the necessary stack sizes and offsets and such.
class SlowPathCallContext {
public:
SlowPathCallContext(RegisterSet usedRegisters, CCallHelpers&, unsigned numArgs, GPRReg returnRegister);
~SlowPathCallContext();
// NOTE: The call that this returns is already going to be linked by the JIT using addLinkTask(),
// so there is no need for you to link it yourself.
SlowPathCall makeCall(void* callTarget);
private:
SlowPathCallKey keyWithTarget(void* callTarget) const;
RegisterSet m_argumentRegisters;
RegisterSet m_callingConventionRegisters;
CCallHelpers& m_jit;
unsigned m_numArgs;
GPRReg m_returnRegister;
size_t m_offsetToSavingArea;
size_t m_stackBytesNeeded;
RegisterSet m_thunkSaveSet;
ptrdiff_t m_offset;
};
template<typename... ArgumentTypes>
SlowPathCall callOperation(
const RegisterSet& usedRegisters, CCallHelpers& jit, CCallHelpers::JumpList* exceptionTarget,
FunctionPtr function, GPRReg resultGPR, ArgumentTypes... arguments)
{
SlowPathCall call;
{
SlowPathCallContext context(usedRegisters, jit, sizeof...(ArgumentTypes) + 1, resultGPR);
jit.setupArgumentsWithExecState(arguments...);
call = context.makeCall(function.value());
}
if (exceptionTarget)
exceptionTarget->append(jit.emitExceptionCheck());
return call;
}
template<typename... ArgumentTypes>
SlowPathCall callOperation(
const RegisterSet& usedRegisters, CCallHelpers& jit, CallSiteIndex callSiteIndex,
CCallHelpers::JumpList* exceptionTarget, FunctionPtr function, GPRReg resultGPR,
ArgumentTypes... arguments)
{
if (callSiteIndex) {
jit.store32(
CCallHelpers::TrustedImm32(callSiteIndex.bits()),
CCallHelpers::tagFor(JSStack::ArgumentCount));
}
return callOperation(usedRegisters, jit, exceptionTarget, function, resultGPR, arguments...);
}
CallSiteIndex callSiteIndexForCodeOrigin(State&, CodeOrigin);
template<typename... ArgumentTypes>
SlowPathCall callOperation(
State& state, const RegisterSet& usedRegisters, CCallHelpers& jit, CodeOrigin codeOrigin,
CCallHelpers::JumpList* exceptionTarget, FunctionPtr function, GPRReg result, ArgumentTypes... arguments)
{
return callOperation(
usedRegisters, jit, callSiteIndexForCodeOrigin(state, codeOrigin), exceptionTarget, function,
result, arguments...);
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)
#endif // FTLSlowPathCall_h
|
