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33 #include <wtf/Assertions.h>
34 #include <wtf/VectorTraits.h>
42 class JSPropertyNameIterator;
45 struct InlineCallFrame;
48 typedef ExecState CallFrame;
51 WTF_MAKE_FAST_ALLOCATED;
55 Register(const JSValue&);
56 Register& operator=(const JSValue&);
57 JSValue jsValue() const;
58 EncodedJSValue encodedJSValue() const;
60 Register& operator=(CallFrame*);
61 Register& operator=(CodeBlock*);
62 Register& operator=(ScopeChainNode*);
63 Register& operator=(Instruction*);
64 Register& operator=(InlineCallFrame*);
67 JSActivation* activation() const;
68 CallFrame* callFrame() const;
69 CodeBlock* codeBlock() const;
70 JSObject* function() const;
71 JSPropertyNameIterator* propertyNameIterator() const;
72 ScopeChainNode* scopeChain() const;
73 Instruction* vPC() const;
74 InlineCallFrame* asInlineCallFrame() const;
75 int32_t unboxedInt32() const;
76 bool unboxedBoolean() const;
77 JSCell* unboxedCell() const;
78 int32_t payload() const;
83 static Register withInt(int32_t i)
85 Register r = jsNumber(i);
89 static Register withCallee(JSObject* callee);
97 InlineCallFrame* inlineCallFrame;
98 EncodedValueDescriptor encodedValue;
102 ALWAYS_INLINE Register::Register()
109 ALWAYS_INLINE Register::Register(const JSValue& v)
111 u.value = JSValue::encode(v);
114 ALWAYS_INLINE Register& Register::operator=(const JSValue& v)
116 u.value = JSValue::encode(v);
120 ALWAYS_INLINE JSValue Register::jsValue() const
122 return JSValue::decode(u.value);
125 ALWAYS_INLINE EncodedJSValue Register::encodedJSValue() const
130 // Interpreter functions
132 ALWAYS_INLINE Register& Register::operator=(CallFrame* callFrame)
134 u.callFrame = callFrame;
138 ALWAYS_INLINE Register& Register::operator=(CodeBlock* codeBlock)
140 u.codeBlock = codeBlock;
144 ALWAYS_INLINE Register& Register::operator=(Instruction* vPC)
150 ALWAYS_INLINE Register& Register::operator=(InlineCallFrame* inlineCallFrame)
152 u.inlineCallFrame = inlineCallFrame;
156 ALWAYS_INLINE int32_t Register::i() const
158 return jsValue().asInt32();
161 ALWAYS_INLINE CallFrame* Register::callFrame() const
166 ALWAYS_INLINE CodeBlock* Register::codeBlock() const
171 ALWAYS_INLINE Instruction* Register::vPC() const
176 ALWAYS_INLINE InlineCallFrame* Register::asInlineCallFrame() const
178 return u.inlineCallFrame;
181 ALWAYS_INLINE int32_t Register::unboxedInt32() const
186 ALWAYS_INLINE bool Register::unboxedBoolean() const
191 ALWAYS_INLINE JSCell* Register::unboxedCell() const
194 return u.encodedValue.ptr;
196 return bitwise_cast<JSCell*>(payload());
200 ALWAYS_INLINE int32_t Register::payload() const
202 return u.encodedValue.asBits.payload;
205 ALWAYS_INLINE int32_t Register::tag() const
207 return u.encodedValue.asBits.tag;
210 ALWAYS_INLINE int32_t& Register::payload()
212 return u.encodedValue.asBits.payload;
215 ALWAYS_INLINE int32_t& Register::tag()
217 return u.encodedValue.asBits.tag;
224 template<> struct VectorTraits<JSC::Register> : VectorTraitsBase<true, JSC::Register> { };