1/* 2 * Copyright (C) 2013 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 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. 12 * 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. 24 */ 25 26#ifndef ProtoCallFrame_h 27#define ProtoCallFrame_h 28 29#include "Register.h" 30 31namespace JSC { 32 33struct ProtoCallFrame { 34 Register codeBlockValue; 35 Register scopeChainValue; 36 Register calleeValue; 37 Register argCountAndCodeOriginValue; 38 Register thisArg; 39 uint32_t paddedArgCount; 40 JSValue *args; 41 42 void init(CodeBlock*, JSScope*, JSObject*, JSValue, int, JSValue* otherArgs = 0); 43 44 CodeBlock* codeBlock() const { return codeBlockValue.Register::codeBlock(); } 45 void setCodeBlock(CodeBlock* codeBlock) { codeBlockValue = codeBlock; } 46 47 JSScope* scope() const { return scopeChainValue.Register::scope(); } 48 void setScope(JSScope* scope) { scopeChainValue = scope; } 49 50 JSObject* callee() const { return calleeValue.Register::function(); } 51 void setCallee(JSObject* callee) { calleeValue = Register::withCallee(callee); } 52 53 int argumentCountIncludingThis() const { return argCountAndCodeOriginValue.payload(); } 54 int argumentCount() const { return argumentCountIncludingThis() - 1; } 55 void setArgumentCountIncludingThis(int count) { argCountAndCodeOriginValue.payload() = count; } 56 void setPaddedArgCount(uint32_t argCount) { paddedArgCount = argCount; } 57 58 void clearCurrentVPC() { argCountAndCodeOriginValue.tag() = 0; } 59 60 JSValue thisValue() const { return thisArg.Register::jsValue(); } 61 void setThisValue(JSValue value) { thisArg = value; } 62 63 JSValue argument(size_t argumentIndex) 64 { 65 ASSERT(static_cast<int>(argumentIndex) < argumentCount()); 66 return args[argumentIndex]; 67 } 68 void setArgument(size_t argumentIndex, JSValue value) 69 { 70 ASSERT(static_cast<int>(argumentIndex) < argumentCount()); 71 args[argumentIndex] = value; 72 } 73}; 74 75} // namespace JSC 76 77#endif // ProtoCallFrame_h 78