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/*
* Copyright (C) 2018-2019 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.
*/
#pragma once
#include "CallFrame.h"
#include "JSCallee.h"
#include "RegisterInlines.h"
namespace JSC {
inline Register& CallFrame::r(VirtualRegister reg)
{
if (reg.isConstant())
return *reinterpret_cast<Register*>(&this->codeBlock()->constantRegister(reg));
return this[reg.offset()];
}
inline Register& CallFrame::uncheckedR(VirtualRegister reg)
{
ASSERT(!reg.isConstant());
return this[reg.offset()];
}
inline JSValue CallFrame::guaranteedJSValueCallee() const
{
ASSERT(!callee().isWasm());
return this[static_cast<int>(CallFrameSlot::callee)].jsValue();
}
inline JSObject* CallFrame::jsCallee() const
{
ASSERT(!callee().isWasm());
return this[static_cast<int>(CallFrameSlot::callee)].object();
}
inline CodeBlock* CallFrame::codeBlock() const
{
ASSERT(!callee().isWasm());
return this[static_cast<int>(CallFrameSlot::codeBlock)].Register::codeBlock();
}
inline SUPPRESS_ASAN CodeBlock* CallFrame::unsafeCodeBlock() const
{
return this[static_cast<int>(CallFrameSlot::codeBlock)].Register::asanUnsafeCodeBlock();
}
inline JSGlobalObject* CallFrame::lexicalGlobalObject(VM& vm) const
{
UNUSED_PARAM(vm);
#if ENABLE(WEBASSEMBLY)
if (callee().isWasm())
return lexicalGlobalObjectFromWasmCallee(vm);
#endif
return jsCallee()->globalObject();
}
#if ENABLE(WEBASSEMBLY)
inline Wasm::Instance* CallFrame::wasmInstance() const
{
ASSERT(callee().isWasm());
return bitwise_cast<Wasm::Instance*>(const_cast<CallFrame*>(this)->uncheckedR(CallFrameSlot::codeBlock).asanUnsafePointer());
}
#endif
inline bool CallFrame::isStackOverflowFrame() const
{
if (callee().isWasm())
return false;
return jsCallee() == jsCallee()->globalObject()->stackOverflowFrameCallee();
}
inline bool CallFrame::isWasmFrame() const
{
return callee().isWasm();
}
inline void CallFrame::setCallee(JSObject* callee)
{
static_cast<Register*>(this)[static_cast<int>(CallFrameSlot::callee)] = callee;
}
inline void CallFrame::setCodeBlock(CodeBlock* codeBlock)
{
static_cast<Register*>(this)[static_cast<int>(CallFrameSlot::codeBlock)] = codeBlock;
}
inline void CallFrame::setScope(int scopeRegisterOffset, JSScope* scope)
{
static_cast<Register*>(this)[scopeRegisterOffset] = scope;
}
inline JSScope* CallFrame::scope(int scopeRegisterOffset) const
{
ASSERT(this[scopeRegisterOffset].Register::scope());
return this[scopeRegisterOffset].Register::scope();
}
inline Register* CallFrame::topOfFrame()
{
if (!codeBlock())
return registers();
return topOfFrameInternal();
}
} // namespace JSC
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