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
|
/*
* Copyright (C) 2012 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.
*/
#include "config.h"
#include "JITThunks.h"
#if ENABLE(JIT)
#include "Executable.h"
#include "JIT.h"
#include "VM.h"
#include "Operations.h"
namespace JSC {
JITThunks::JITThunks()
: m_hostFunctionStubMap(adoptPtr(new HostFunctionStubMap))
{
}
JITThunks::~JITThunks()
{
}
MacroAssemblerCodePtr JITThunks::ctiNativeCall(VM* vm)
{
#if ENABLE(LLINT)
if (!vm->canUseJIT())
return MacroAssemblerCodePtr::createLLIntCodePtr(llint_native_call_trampoline);
#endif
return ctiStub(vm, nativeCallGenerator).code();
}
MacroAssemblerCodePtr JITThunks::ctiNativeConstruct(VM* vm)
{
#if ENABLE(LLINT)
if (!vm->canUseJIT())
return MacroAssemblerCodePtr::createLLIntCodePtr(llint_native_construct_trampoline);
#endif
return ctiStub(vm, nativeConstructGenerator).code();
}
MacroAssemblerCodeRef JITThunks::ctiStub(VM* vm, ThunkGenerator generator)
{
CTIStubMap::AddResult entry = m_ctiStubMap.add(generator, MacroAssemblerCodeRef());
if (entry.isNewEntry)
entry.iterator->value = generator(vm);
return entry.iterator->value;
}
NativeExecutable* JITThunks::hostFunctionStub(VM* vm, NativeFunction function, NativeFunction constructor)
{
if (NativeExecutable* nativeExecutable = m_hostFunctionStubMap->get(std::make_pair(function, constructor)))
return nativeExecutable;
NativeExecutable* nativeExecutable = NativeExecutable::create(*vm, JIT::compileCTINativeCall(vm, function), function, MacroAssemblerCodeRef::createSelfManagedCodeRef(ctiNativeConstruct(vm)), constructor, NoIntrinsic);
weakAdd(*m_hostFunctionStubMap, std::make_pair(function, constructor), PassWeak<NativeExecutable>(nativeExecutable));
return nativeExecutable;
}
NativeExecutable* JITThunks::hostFunctionStub(VM* vm, NativeFunction function, ThunkGenerator generator, Intrinsic intrinsic)
{
if (NativeExecutable* nativeExecutable = m_hostFunctionStubMap->get(std::make_pair(function, &callHostFunctionAsConstructor)))
return nativeExecutable;
MacroAssemblerCodeRef code;
if (generator) {
if (vm->canUseJIT())
code = generator(vm);
else
code = MacroAssemblerCodeRef();
} else
code = JIT::compileCTINativeCall(vm, function);
NativeExecutable* nativeExecutable = NativeExecutable::create(*vm, code, function, MacroAssemblerCodeRef::createSelfManagedCodeRef(ctiNativeConstruct(vm)), callHostFunctionAsConstructor, intrinsic);
weakAdd(*m_hostFunctionStubMap, std::make_pair(function, &callHostFunctionAsConstructor), PassWeak<NativeExecutable>(nativeExecutable));
return nativeExecutable;
}
void JITThunks::clearHostFunctionStubs()
{
m_hostFunctionStubMap.clear();
}
} // namespace JSC
#endif // ENABLE(JIT)
|
