X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/4e4e5a6f2694187498445a6ac6f1634ce8141119..14957cd040308e3eeec43d26bae5d76da13fcd85:/interpreter/CallFrame.h?ds=inline diff --git a/interpreter/CallFrame.h b/interpreter/CallFrame.h index fff6ea7..57b24ef 100644 --- a/interpreter/CallFrame.h +++ b/interpreter/CallFrame.h @@ -1,7 +1,7 @@ /* * Copyright (C) 1999-2001 Harri Porten (porten@kde.org) * Copyright (C) 2001 Peter Kelly (pmk@post.com) - * Copyright (C) 2003, 2007, 2008 Apple Inc. All rights reserved. + * Copyright (C) 2003, 2007, 2008, 2011 Apple Inc. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -24,65 +24,48 @@ #define CallFrame_h #include "JSGlobalData.h" +#include "MacroAssemblerCodeRef.h" #include "RegisterFile.h" -#include "ScopeChain.h" namespace JSC { class Arguments; class JSActivation; class Interpreter; + class ScopeChainNode; // Represents the current state of script execution. // Passed as the first argument to most functions. class ExecState : private Register { public: - JSFunction* callee() const { return this[RegisterFile::Callee].function(); } + JSObject* callee() const { return this[RegisterFile::Callee].function(); } CodeBlock* codeBlock() const { return this[RegisterFile::CodeBlock].Register::codeBlock(); } ScopeChainNode* scopeChain() const { ASSERT(this[RegisterFile::ScopeChain].Register::scopeChain()); return this[RegisterFile::ScopeChain].Register::scopeChain(); } - int argumentCount() const { return this[RegisterFile::ArgumentCount].i(); } - - JSValue thisValue(); // Global object in which execution began. JSGlobalObject* dynamicGlobalObject(); // Global object in which the currently executing code was defined. // Differs from dynamicGlobalObject() during function calls across web browser frames. - JSGlobalObject* lexicalGlobalObject() const - { - return scopeChain()->globalObject; - } + inline JSGlobalObject* lexicalGlobalObject() const; // Differs from lexicalGlobalObject because this will have DOM window shell rather than // the actual DOM window, which can't be "this" for security reasons. - JSObject* globalThisValue() const - { - return scopeChain()->globalThis; - } + inline JSObject* globalThisValue() const; - // FIXME: Elsewhere, we use JSGlobalData* rather than JSGlobalData&. - // We should make this more uniform and either use a reference everywhere - // or a pointer everywhere. - JSGlobalData& globalData() const - { - ASSERT(scopeChain()->globalData); - return *scopeChain()->globalData; - } + inline JSGlobalData& globalData() const; // Convenience functions for access to global data. // It takes a few memory references to get from a call frame to the global data // pointer, so these are inefficient, and should be used sparingly in new code. // But they're used in many places in legacy code, so they're not going away any time soon. - void setException(JSValue exception) { globalData().exception = exception; } void clearException() { globalData().exception = JSValue(); } JSValue exception() const { return globalData().exception; } - JSValue* exceptionSlot() { return &globalData().exception; } bool hadException() const { return globalData().exception; } const CommonIdentifiers& propertyNames() const { return *globalData().propertyNames; } @@ -92,14 +75,24 @@ namespace JSC { #ifndef NDEBUG void dumpCaller(); #endif - static const HashTable* arrayTable(CallFrame* callFrame) { return callFrame->globalData().arrayTable; } + static const HashTable* arrayConstructorTable(CallFrame* callFrame) { return callFrame->globalData().arrayConstructorTable; } + static const HashTable* arrayPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().arrayPrototypeTable; } + static const HashTable* booleanPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().booleanPrototypeTable; } static const HashTable* dateTable(CallFrame* callFrame) { return callFrame->globalData().dateTable; } + static const HashTable* dateConstructorTable(CallFrame* callFrame) { return callFrame->globalData().dateConstructorTable; } + static const HashTable* errorPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().errorPrototypeTable; } + static const HashTable* globalObjectTable(CallFrame* callFrame) { return callFrame->globalData().globalObjectTable; } static const HashTable* jsonTable(CallFrame* callFrame) { return callFrame->globalData().jsonTable; } static const HashTable* mathTable(CallFrame* callFrame) { return callFrame->globalData().mathTable; } - static const HashTable* numberTable(CallFrame* callFrame) { return callFrame->globalData().numberTable; } + static const HashTable* numberConstructorTable(CallFrame* callFrame) { return callFrame->globalData().numberConstructorTable; } + static const HashTable* numberPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().numberPrototypeTable; } + static const HashTable* objectConstructorTable(CallFrame* callFrame) { return callFrame->globalData().objectConstructorTable; } + static const HashTable* objectPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().objectPrototypeTable; } static const HashTable* regExpTable(CallFrame* callFrame) { return callFrame->globalData().regExpTable; } static const HashTable* regExpConstructorTable(CallFrame* callFrame) { return callFrame->globalData().regExpConstructorTable; } + static const HashTable* regExpPrototypeTable(CallFrame* callFrame) { return callFrame->globalData().regExpPrototypeTable; } static const HashTable* stringTable(CallFrame* callFrame) { return callFrame->globalData().stringTable; } + static const HashTable* stringConstructorTable(CallFrame* callFrame) { return callFrame->globalData().stringConstructorTable; } static CallFrame* create(Register* callFrameBase) { return static_cast(callFrameBase); } Register* registers() { return this; } @@ -107,7 +100,6 @@ namespace JSC { CallFrame& operator=(const Register& r) { *static_cast(this) = r; return *this; } CallFrame* callerFrame() const { return this[RegisterFile::CallerFrame].callFrame(); } - Arguments* optionalCalleeArguments() const { return this[RegisterFile::OptionalCalleeArguments].arguments(); } #if ENABLE(JIT) ReturnAddressPtr returnPC() const { return ReturnAddressPtr(this[RegisterFile::ReturnPC].vPC()); } #endif @@ -115,42 +107,57 @@ namespace JSC { Instruction* returnVPC() const { return this[RegisterFile::ReturnPC].vPC(); } #endif - void setCalleeArguments(JSValue arguments) { static_cast(this)[RegisterFile::OptionalCalleeArguments] = arguments; } void setCallerFrame(CallFrame* callerFrame) { static_cast(this)[RegisterFile::CallerFrame] = callerFrame; } void setScopeChain(ScopeChainNode* scopeChain) { static_cast(this)[RegisterFile::ScopeChain] = scopeChain; } ALWAYS_INLINE void init(CodeBlock* codeBlock, Instruction* vPC, ScopeChainNode* scopeChain, - CallFrame* callerFrame, int returnValueRegister, int argc, JSFunction* function) + CallFrame* callerFrame, int argc, JSObject* callee) { ASSERT(callerFrame); // Use noCaller() rather than 0 for the outer host call frame caller. + ASSERT(callerFrame == noCaller() || callerFrame->removeHostCallFrameFlag()->registerFile()->end() >= this); setCodeBlock(codeBlock); setScopeChain(scopeChain); setCallerFrame(callerFrame); - static_cast(this)[RegisterFile::ReturnPC] = vPC; // This is either an Instruction* or a pointer into JIT generated code stored as an Instruction*. - static_cast(this)[RegisterFile::ReturnValueRegister] = Register::withInt(returnValueRegister); - setArgumentCount(argc); // original argument count (for the sake of the "arguments" object) - setCallee(function); - setCalleeArguments(JSValue()); + setReturnPC(vPC); // This is either an Instruction* or a pointer into JIT generated code stored as an Instruction*. + setArgumentCountIncludingThis(argc); // original argument count (for the sake of the "arguments" object) + setCallee(callee); } // Read a register from the codeframe (or constant from the CodeBlock). inline Register& r(int); + // Read a register for a non-constant + inline Register& uncheckedR(int); + + // Access to arguments. + int hostThisRegister() { return -RegisterFile::CallFrameHeaderSize - argumentCountIncludingThis(); } + JSValue hostThisValue() { return this[hostThisRegister()].jsValue(); } + size_t argumentCount() const { return argumentCountIncludingThis() - 1; } + size_t argumentCountIncludingThis() const { return this[RegisterFile::ArgumentCount].i(); } + JSValue argument(int argumentNumber) + { + int argumentIndex = -RegisterFile::CallFrameHeaderSize - this[RegisterFile::ArgumentCount].i() + argumentNumber + 1; + if (argumentIndex >= -RegisterFile::CallFrameHeaderSize) + return jsUndefined(); + return this[argumentIndex].jsValue(); + } static CallFrame* noCaller() { return reinterpret_cast(HostCallFrameFlag); } - int returnValueRegister() const { return this[RegisterFile::ReturnValueRegister].i(); } bool hasHostCallFrameFlag() const { return reinterpret_cast(this) & HostCallFrameFlag; } CallFrame* addHostCallFrameFlag() const { return reinterpret_cast(reinterpret_cast(this) | HostCallFrameFlag); } CallFrame* removeHostCallFrameFlag() { return reinterpret_cast(reinterpret_cast(this) & ~HostCallFrameFlag); } - private: - void setArgumentCount(int count) { static_cast(this)[RegisterFile::ArgumentCount] = Register::withInt(count); } - void setCallee(JSFunction* callee) { static_cast(this)[RegisterFile::Callee] = callee; } + void setArgumentCountIncludingThis(int count) { static_cast(this)[RegisterFile::ArgumentCount] = Register::withInt(count); } + void setCallee(JSObject* callee) { static_cast(this)[RegisterFile::Callee] = Register::withCallee(callee); } void setCodeBlock(CodeBlock* codeBlock) { static_cast(this)[RegisterFile::CodeBlock] = codeBlock; } + void setReturnPC(void* value) { static_cast(this)[RegisterFile::ReturnPC] = (Instruction*)value; } + private: static const intptr_t HostCallFrameFlag = 1; - +#ifndef NDEBUG + RegisterFile* registerFile(); +#endif ExecState(); ~ExecState(); };