2 * Copyright (C) 2008 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
31 #include "CallFrame.h"
33 #include "MacroAssemblerCodeRef.h"
42 typedef MacroAssemblerCodeRef CodeRef
;
43 typedef MacroAssemblerCodePtr CodePtr
;
49 JITCode(const CodeRef ref
)
54 bool operator !() const
56 return !m_ref
.m_code
.executableAddress();
59 CodePtr
addressForCall()
64 // This function returns the offset in bytes of 'pointerIntoCode' into
65 // this block of code. The pointer provided must be a pointer into this
66 // block of code. It is ASSERTed that no codeblock >4gb in size.
67 unsigned offsetOf(void* pointerIntoCode
)
69 intptr_t result
= reinterpret_cast<intptr_t>(pointerIntoCode
) - reinterpret_cast<intptr_t>(m_ref
.m_code
.executableAddress());
70 ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result
)) == result
);
71 return static_cast<unsigned>(result
);
75 inline JSValue
execute(RegisterFile
* registerFile
, CallFrame
* callFrame
, JSGlobalData
* globalData
, JSValue
* exception
)
77 return JSValue::decode(ctiTrampoline(m_ref
.m_code
.executableAddress(), registerFile
, callFrame
, exception
, Profiler::enabledProfilerReference(), globalData
));
82 return m_ref
.m_code
.dataLocation();
87 ASSERT(m_ref
.m_code
.executableAddress());
91 ExecutablePool
* getExecutablePool()
93 return m_ref
.m_executablePool
.get();
96 // Host functions are a bit special; they have a m_code pointer but they
97 // do not individully ref the executable pool containing the trampoline.
98 static JITCode
HostFunction(CodePtr code
)
100 return JITCode(code
.dataLocation(), 0, 0);
104 JITCode(void* code
, PassRefPtr
<ExecutablePool
> executablePool
, size_t size
)
105 : m_ref(code
, executablePool
, size
)