mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-26 21:50:53 +00:00
87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
/*
|
|
* Copyright (C) 2013-2019 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 "CodeBlock.h"
|
|
#include "Register.h"
|
|
#include "StackAlignment.h"
|
|
#include <wtf/ForbidHeapAllocation.h>
|
|
|
|
namespace JSC {
|
|
|
|
struct JS_EXPORT_PRIVATE ProtoCallFrame {
|
|
WTF_FORBID_HEAP_ALLOCATION;
|
|
public:
|
|
// CodeBlock, Callee, ArgumentCount, and |this|.
|
|
static constexpr unsigned numberOfRegisters { 4 };
|
|
|
|
Register codeBlockValue;
|
|
Register calleeValue;
|
|
Register argCountAndCodeOriginValue;
|
|
Register thisArg;
|
|
uint32_t paddedArgCount;
|
|
bool hasArityMismatch;
|
|
JSValue *args;
|
|
JSGlobalObject* globalObject;
|
|
|
|
inline void init(CodeBlock*, JSGlobalObject*, JSObject*, JSValue, int, JSValue* otherArgs = nullptr);
|
|
|
|
inline CodeBlock* codeBlock() const;
|
|
inline void setCodeBlock(CodeBlock*);
|
|
|
|
inline JSObject* callee() const;
|
|
inline void setCallee(JSObject*);
|
|
void setGlobalObject(JSGlobalObject* object)
|
|
{
|
|
globalObject = object;
|
|
}
|
|
|
|
int argumentCountIncludingThis() const { return argCountAndCodeOriginValue.payload(); }
|
|
int argumentCount() const { return argumentCountIncludingThis() - 1; }
|
|
void setArgumentCountIncludingThis(int count) { argCountAndCodeOriginValue.payload() = count; }
|
|
void setPaddedArgCount(uint32_t argCount) { paddedArgCount = argCount; }
|
|
|
|
void clearCurrentVPC() { argCountAndCodeOriginValue.tag() = 0; }
|
|
|
|
JSValue thisValue() const { return thisArg.Register::jsValue(); }
|
|
void setThisValue(JSValue value) { thisArg = value; }
|
|
|
|
bool needArityCheck() { return hasArityMismatch; }
|
|
|
|
JSValue argument(size_t argumentIndex)
|
|
{
|
|
ASSERT(static_cast<int>(argumentIndex) < argumentCount());
|
|
return args[argumentIndex];
|
|
}
|
|
void setArgument(size_t argumentIndex, JSValue value)
|
|
{
|
|
ASSERT(static_cast<int>(argumentIndex) < argumentCount());
|
|
args[argumentIndex] = value;
|
|
}
|
|
};
|
|
|
|
} // namespace JSC
|