[apple/javascriptcore.git] / jit / JITStubs.h

/*
 * Copyright (C) 2008 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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
 */

#ifndef JITStubs_h
#define JITStubs_h

#include <wtf/Platform.h>

#include "MacroAssemblerCodeRef.h"
#include "Register.h"

#if ENABLE(JIT)

namespace JSC {

    struct StructureStubInfo;

    class CodeBlock;
    class ExecutablePool;
    class FunctionExecutable;
    class Identifier;
    class JSGlobalData;
    class JSGlobalData;
    class JSObject;
    class JSPropertyNameIterator;
    class JSValue;
    class JSValueEncodedAsPointer;
    class Profiler;
    class PropertySlot;
    class PutPropertySlot;
    class RegisterFile;
    class JSGlobalObject;
    class RegExp;

    union JITStubArg {
        void* asPointer;
        EncodedJSValue asEncodedJSValue;
        int32_t asInt32;

        JSValue jsValue() { return JSValue::decode(asEncodedJSValue); }
        JSObject* jsObject() { return static_cast<JSObject*>(asPointer); }
        Identifier& identifier() { return *static_cast<Identifier*>(asPointer); }
        int32_t int32() { return asInt32; }
        CodeBlock* codeBlock() { return static_cast<CodeBlock*>(asPointer); }
        FunctionExecutable* function() { return static_cast<FunctionExecutable*>(asPointer); }
        RegExp* regExp() { return static_cast<RegExp*>(asPointer); }
        JSPropertyNameIterator* propertyNameIterator() { return static_cast<JSPropertyNameIterator*>(asPointer); }
        JSGlobalObject* globalObject() { return static_cast<JSGlobalObject*>(asPointer); }
        JSString* jsString() { return static_cast<JSString*>(asPointer); }
        ReturnAddressPtr returnAddress() { return ReturnAddressPtr(asPointer); }
    };

#if CPU(X86_64)
    struct JITStackFrame {
        void* reserved; // Unused
        JITStubArg args[6];
        void* padding[2]; // Maintain 32-byte stack alignment (possibly overkill).

        void* code;
        RegisterFile* registerFile;
        CallFrame* callFrame;
        JSValue* exception;
        Profiler** enabledProfilerReference;
        JSGlobalData* globalData;

        void* savedRBX;
        void* savedR15;
        void* savedR14;
        void* savedR13;
        void* savedR12;
        void* savedRBP;
        void* savedRIP;

        // When JIT code makes a call, it pushes its return address just below the rest of the stack.
        ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
    };
#elif CPU(X86)
#if COMPILER(MSVC)
#pragma pack(push)
#pragma pack(4)
#endif // COMPILER(MSVC)
    struct JITStackFrame {
        void* reserved; // Unused
        JITStubArg args[6];
#if USE(JSVALUE32_64)
        void* padding[2]; // Maintain 16-byte stack alignment.
#endif

        void* savedEBX;
        void* savedEDI;
        void* savedESI;
        void* savedEBP;
        void* savedEIP;

        void* code;
        RegisterFile* registerFile;
        CallFrame* callFrame;
        JSValue* exception;
        Profiler** enabledProfilerReference;
        JSGlobalData* globalData;
        
        // When JIT code makes a call, it pushes its return address just below the rest of the stack.
        ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
    };
#if COMPILER(MSVC)
#pragma pack(pop)
#endif // COMPILER(MSVC)
#elif CPU(ARM_THUMB2)
    struct JITStackFrame {
        void* reserved; // Unused
        JITStubArg args[6];
#if USE(JSVALUE32_64)
        void* padding[2]; // Maintain 16-byte stack alignment.
#endif

        ReturnAddressPtr thunkReturnAddress;

        void* preservedReturnAddress;
        void* preservedR4;
        void* preservedR5;
        void* preservedR6;

        // These arguments passed in r1..r3 (r0 contained the entry code pointed, which is not preserved)
        RegisterFile* registerFile;
        CallFrame* callFrame;
        JSValue* exception;

        void* padding2;

        // These arguments passed on the stack.
        Profiler** enabledProfilerReference;
        JSGlobalData* globalData;
        
        ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
    };
#elif CPU(ARM_TRADITIONAL)
    struct JITStackFrame {
        JITStubArg padding; // Unused
        JITStubArg args[7];

        ReturnAddressPtr thunkReturnAddress;

        void* preservedR4;
        void* preservedR5;
        void* preservedR6;
        void* preservedR7;
        void* preservedR8;
        void* preservedLink;

        RegisterFile* registerFile;
        CallFrame* callFrame;
        JSValue* exception;

        // These arguments passed on the stack.
        Profiler** enabledProfilerReference;
        JSGlobalData* globalData;

        // When JIT code makes a call, it pushes its return address just below the rest of the stack.
        ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
    };
#else
#error "JITStackFrame not defined for this platform."
#endif

#define JITSTACKFRAME_ARGS_INDEX (OBJECT_OFFSETOF(JITStackFrame, args) / sizeof(void*))

#if USE(JIT_STUB_ARGUMENT_VA_LIST)
    #define STUB_ARGS_DECLARATION void* args, ...
    #define STUB_ARGS (reinterpret_cast<void**>(vl_args) - 1)

    #if COMPILER(MSVC)
    #define JIT_STUB __cdecl
    #else
    #define JIT_STUB
    #endif
#else
    #define STUB_ARGS_DECLARATION void** args
    #define STUB_ARGS (args)

    #if CPU(X86) && COMPILER(MSVC)
    #define JIT_STUB __fastcall
    #elif CPU(X86) && COMPILER(GCC)
    #define JIT_STUB  __attribute__ ((fastcall))
    #else
    #define JIT_STUB
    #endif
#endif

#if CPU(X86_64)
    struct VoidPtrPair {
        void* first;
        void* second;
    };
    #define RETURN_POINTER_PAIR(a,b) VoidPtrPair pair = { a, b }; return pair
#else
    // MSVC doesn't support returning a two-value struct in two registers, so
    // we cast the struct to int64_t instead.
    typedef uint64_t VoidPtrPair;
    union VoidPtrPairUnion {
        struct { void* first; void* second; } s;
        VoidPtrPair i;
    };
    #define RETURN_POINTER_PAIR(a,b) VoidPtrPairUnion pair = {{ a, b }}; return pair.i
#endif

    extern "C" void ctiVMThrowTrampoline();
    extern "C" void ctiOpThrowNotCaught();
    extern "C" EncodedJSValue ctiTrampoline(void* code, RegisterFile*, CallFrame*, JSValue* exception, Profiler**, JSGlobalData*);

    class JITThunks {
    public:
        JITThunks(JSGlobalData*);

        static void tryCacheGetByID(CallFrame*, CodeBlock*, ReturnAddressPtr returnAddress, JSValue baseValue, const Identifier& propertyName, const PropertySlot&, StructureStubInfo* stubInfo);
        static void tryCachePutByID(CallFrame*, CodeBlock*, ReturnAddressPtr returnAddress, JSValue baseValue, const PutPropertySlot&, StructureStubInfo* stubInfo);

        MacroAssemblerCodePtr ctiStringLengthTrampoline() { return m_ctiStringLengthTrampoline; }
        MacroAssemblerCodePtr ctiVirtualCallLink() { return m_ctiVirtualCallLink; }
        MacroAssemblerCodePtr ctiVirtualCall() { return m_ctiVirtualCall; }
        MacroAssemblerCodePtr ctiNativeCallThunk() { return m_ctiNativeCallThunk; }

    private:
        RefPtr<ExecutablePool> m_executablePool;

        MacroAssemblerCodePtr m_ctiStringLengthTrampoline;
        MacroAssemblerCodePtr m_ctiVirtualCallLink;
        MacroAssemblerCodePtr m_ctiVirtualCall;
        MacroAssemblerCodePtr m_ctiNativeCallThunk;
    };

extern "C" {
    EncodedJSValue JIT_STUB cti_op_add(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_bitand(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_bitnot(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_bitor(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_bitxor(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_call_NotJSFunction(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_call_eval(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_construct_NotJSConstruct(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_convert_this(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_del_by_id(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_del_by_val(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_div(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_array_fail(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_generic(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_method_check(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_proto_fail(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list_full(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_self_fail(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_id_string_fail(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_val(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_val_byte_array(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_get_by_val_string(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_in(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_instanceof(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_boolean(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_function(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_number(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_object(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_string(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_is_undefined(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_less(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_lesseq(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_lshift(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_mod(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_mul(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_negate(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_not(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_nstricteq(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_post_dec(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_post_inc(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_pre_dec(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_pre_inc(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_resolve(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_resolve_base(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_resolve_global(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_resolve_skip(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_resolve_with_base(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_rshift(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_strcat(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_stricteq(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_sub(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_throw(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_to_jsnumber(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_to_primitive(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_typeof(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_op_urshift(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_vm_throw(STUB_ARGS_DECLARATION);
    EncodedJSValue JIT_STUB cti_to_object(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_construct_JSConstruct(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_array(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_error(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_func(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_func_exp(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_object(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_new_regexp(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_push_activation(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_push_new_scope(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_push_scope(STUB_ARGS_DECLARATION);
    JSObject* JIT_STUB cti_op_put_by_id_transition_realloc(STUB_ARGS_DECLARATION);
    JSPropertyNameIterator* JIT_STUB cti_op_get_pnames(STUB_ARGS_DECLARATION);
    VoidPtrPair JIT_STUB cti_op_call_arityCheck(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_eq(STUB_ARGS_DECLARATION);
#if USE(JSVALUE32_64)
    int JIT_STUB cti_op_eq_strings(STUB_ARGS_DECLARATION);
#endif
    int JIT_STUB cti_op_jless(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_jlesseq(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_jtrue(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_load_varargs(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_timeout_check(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_has_property(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_create_arguments(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_create_arguments_no_params(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_debug(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_end(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_jmp_scopes(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_pop_scope(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_profile_did_call(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_profile_will_call(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_id(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_id_fail(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_id_generic(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_index(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_val(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_by_val_byte_array(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_getter(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_put_setter(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_ret_scopeChain(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_tear_off_activation(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_op_tear_off_arguments(STUB_ARGS_DECLARATION);
    void JIT_STUB cti_register_file_check(STUB_ARGS_DECLARATION);
    void* JIT_STUB cti_op_call_JSFunction(STUB_ARGS_DECLARATION);
    void* JIT_STUB cti_op_switch_char(STUB_ARGS_DECLARATION);
    void* JIT_STUB cti_op_switch_imm(STUB_ARGS_DECLARATION);
    void* JIT_STUB cti_op_switch_string(STUB_ARGS_DECLARATION);
    void* JIT_STUB cti_vm_lazyLinkCall(STUB_ARGS_DECLARATION);
} // extern "C"

} // namespace JSC

#endif // ENABLE(JIT)

#endif // JITStubs_h
Commit	Line	Data
ba379fdc A	1	/*
	2	* Copyright (C) 2008 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	*
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
	14	* its contributors may be used to endorse or promote products derived
	15	* from this software without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
	18	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	19	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	20	* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
	21	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	22	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	23	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	24	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	27	*/
	28
	29	#ifndef JITStubs_h
	30	#define JITStubs_h
	31
	32	#include <wtf/Platform.h>
	33
	34	#include "MacroAssemblerCodeRef.h"
	35	#include "Register.h"
	36
	37	#if ENABLE(JIT)
	38
	39	namespace JSC {
	40
f9bf01c6 A	41	struct StructureStubInfo;
f9bf01c6 A	42
ba379fdc A	43	class CodeBlock;
ba379fdc A	44	class ExecutablePool;
f9bf01c6	45	class FunctionExecutable;
ba379fdc A	46	class Identifier;
	47	class JSGlobalData;
	48	class JSGlobalData;
	49	class JSObject;
	50	class JSPropertyNameIterator;
	51	class JSValue;
	52	class JSValueEncodedAsPointer;
	53	class Profiler;
	54	class PropertySlot;
	55	class PutPropertySlot;
	56	class RegisterFile;
ba379fdc A	57	class JSGlobalObject;
	58	class RegExp;
	59
	60	union JITStubArg {
	61	void* asPointer;
	62	EncodedJSValue asEncodedJSValue;
	63	int32_t asInt32;
	64
	65	JSValue jsValue() { return JSValue::decode(asEncodedJSValue); }
f9bf01c6	66	JSObject* jsObject() { return static_cast<JSObject*>(asPointer); }
ba379fdc A	67	Identifier& identifier() { return static_cast<Identifier>(asPointer); }
	68	int32_t int32() { return asInt32; }
	69	CodeBlock* codeBlock() { return static_cast<CodeBlock*>(asPointer); }
f9bf01c6	70	FunctionExecutable* function() { return static_cast<FunctionExecutable*>(asPointer); }
ba379fdc A	71	RegExp* regExp() { return static_cast<RegExp*>(asPointer); }
	72	JSPropertyNameIterator* propertyNameIterator() { return static_cast<JSPropertyNameIterator*>(asPointer); }
	73	JSGlobalObject* globalObject() { return static_cast<JSGlobalObject*>(asPointer); }
	74	JSString* jsString() { return static_cast<JSString*>(asPointer); }
	75	ReturnAddressPtr returnAddress() { return ReturnAddressPtr(asPointer); }
	76	};
	77
f9bf01c6	78	#if CPU(X86_64)
ba379fdc A	79	struct JITStackFrame {
	80	void* reserved; // Unused
	81	JITStubArg args[6];
	82	void* padding[2]; // Maintain 32-byte stack alignment (possibly overkill).
	83
f9bf01c6 A	84	void* code;
	85	RegisterFile* registerFile;
	86	CallFrame* callFrame;
	87	JSValue* exception;
	88	Profiler** enabledProfilerReference;
	89	JSGlobalData* globalData;
	90
ba379fdc A	91	void* savedRBX;
	92	void* savedR15;
	93	void* savedR14;
	94	void* savedR13;
	95	void* savedR12;
	96	void* savedRBP;
	97	void* savedRIP;
	98
ba379fdc A	99	// When JIT code makes a call, it pushes its return address just below the rest of the stack.
	100	ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
	101	};
f9bf01c6	102	#elif CPU(X86)
ba379fdc A	103	#if COMPILER(MSVC)
	104	#pragma pack(push)
	105	#pragma pack(4)
	106	#endif // COMPILER(MSVC)
	107	struct JITStackFrame {
	108	void* reserved; // Unused
	109	JITStubArg args[6];
	110	#if USE(JSVALUE32_64)
	111	void* padding[2]; // Maintain 16-byte stack alignment.
	112	#endif
	113
	114	void* savedEBX;
	115	void* savedEDI;
	116	void* savedESI;
	117	void* savedEBP;
	118	void* savedEIP;
	119
	120	void* code;
	121	RegisterFile* registerFile;
	122	CallFrame* callFrame;
	123	JSValue* exception;
	124	Profiler** enabledProfilerReference;
	125	JSGlobalData* globalData;
	126
	127	// When JIT code makes a call, it pushes its return address just below the rest of the stack.
	128	ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
	129	};
	130	#if COMPILER(MSVC)
	131	#pragma pack(pop)
	132	#endif // COMPILER(MSVC)
f9bf01c6	133	#elif CPU(ARM_THUMB2)
ba379fdc A	134	struct JITStackFrame {
	135	void* reserved; // Unused
	136	JITStubArg args[6];
	137	#if USE(JSVALUE32_64)
	138	void* padding[2]; // Maintain 16-byte stack alignment.
	139	#endif
	140
	141	ReturnAddressPtr thunkReturnAddress;
	142
	143	void* preservedReturnAddress;
	144	void* preservedR4;
	145	void* preservedR5;
	146	void* preservedR6;
	147
	148	// These arguments passed in r1..r3 (r0 contained the entry code pointed, which is not preserved)
	149	RegisterFile* registerFile;
	150	CallFrame* callFrame;
	151	JSValue* exception;
	152
f9bf01c6 A	153	void* padding2;
f9bf01c6 A	154
ba379fdc A	155	// These arguments passed on the stack.
	156	Profiler** enabledProfilerReference;
	157	JSGlobalData* globalData;
	158
f9bf01c6 A	159	ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
	160	};
	161	#elif CPU(ARM_TRADITIONAL)
	162	struct JITStackFrame {
	163	JITStubArg padding; // Unused
	164	JITStubArg args[7];
	165
	166	ReturnAddressPtr thunkReturnAddress;
	167
	168	void* preservedR4;
	169	void* preservedR5;
	170	void* preservedR6;
	171	void* preservedR7;
	172	void* preservedR8;
	173	void* preservedLink;
	174
	175	RegisterFile* registerFile;
	176	CallFrame* callFrame;
	177	JSValue* exception;
	178
	179	// These arguments passed on the stack.
	180	Profiler** enabledProfilerReference;
	181	JSGlobalData* globalData;
	182
	183	// When JIT code makes a call, it pushes its return address just below the rest of the stack.
ba379fdc A	184	ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
	185	};
	186	#else
	187	#error "JITStackFrame not defined for this platform."
	188	#endif
	189
f9bf01c6 A	190	#define JITSTACKFRAME_ARGS_INDEX (OBJECT_OFFSETOF(JITStackFrame, args) / sizeof(void*))
f9bf01c6 A	191
ba379fdc A	192	#if USE(JIT_STUB_ARGUMENT_VA_LIST)
	193	#define STUB_ARGS_DECLARATION void* args, ...
	194	#define STUB_ARGS (reinterpret_cast<void**>(vl_args) - 1)
	195
	196	#if COMPILER(MSVC)
	197	#define JIT_STUB __cdecl
	198	#else
	199	#define JIT_STUB
	200	#endif
	201	#else
	202	#define STUB_ARGS_DECLARATION void** args
	203	#define STUB_ARGS (args)
	204
f9bf01c6	205	#if CPU(X86) && COMPILER(MSVC)
ba379fdc	206	#define JIT_STUB __fastcall
f9bf01c6	207	#elif CPU(X86) && COMPILER(GCC)
ba379fdc A	208	#define JIT_STUB __attribute__ ((fastcall))
	209	#else
	210	#define JIT_STUB
	211	#endif
	212	#endif
	213
f9bf01c6	214	#if CPU(X86_64)
ba379fdc A	215	struct VoidPtrPair {
	216	void* first;
	217	void* second;
	218	};
	219	#define RETURN_POINTER_PAIR(a,b) VoidPtrPair pair = { a, b }; return pair
	220	#else
	221	// MSVC doesn't support returning a two-value struct in two registers, so
	222	// we cast the struct to int64_t instead.
	223	typedef uint64_t VoidPtrPair;
	224	union VoidPtrPairUnion {
	225	struct { void* first; void* second; } s;
	226	VoidPtrPair i;
	227	};
	228	#define RETURN_POINTER_PAIR(a,b) VoidPtrPairUnion pair = {{ a, b }}; return pair.i
	229	#endif
	230
	231	extern "C" void ctiVMThrowTrampoline();
	232	extern "C" void ctiOpThrowNotCaught();
f9bf01c6	233	extern "C" EncodedJSValue ctiTrampoline(void* code, RegisterFile, CallFrame, JSValue* exception, Profiler*, JSGlobalData);
ba379fdc A	234
	235	class JITThunks {
	236	public:
	237	JITThunks(JSGlobalData*);
	238
f9bf01c6 A	239	static void tryCacheGetByID(CallFrame, CodeBlock, ReturnAddressPtr returnAddress, JSValue baseValue, const Identifier& propertyName, const PropertySlot&, StructureStubInfo* stubInfo);
	240	static void tryCachePutByID(CallFrame, CodeBlock, ReturnAddressPtr returnAddress, JSValue baseValue, const PutPropertySlot&, StructureStubInfo* stubInfo);
	241
ba379fdc	242	MacroAssemblerCodePtr ctiStringLengthTrampoline() { return m_ctiStringLengthTrampoline; }
ba379fdc A	243	MacroAssemblerCodePtr ctiVirtualCallLink() { return m_ctiVirtualCallLink; }
	244	MacroAssemblerCodePtr ctiVirtualCall() { return m_ctiVirtualCall; }
	245	MacroAssemblerCodePtr ctiNativeCallThunk() { return m_ctiNativeCallThunk; }
	246
	247	private:
	248	RefPtr<ExecutablePool> m_executablePool;
	249
	250	MacroAssemblerCodePtr m_ctiStringLengthTrampoline;
ba379fdc A	251	MacroAssemblerCodePtr m_ctiVirtualCallLink;
	252	MacroAssemblerCodePtr m_ctiVirtualCall;
	253	MacroAssemblerCodePtr m_ctiNativeCallThunk;
	254	};
	255
	256	extern "C" {
	257	EncodedJSValue JIT_STUB cti_op_add(STUB_ARGS_DECLARATION);
	258	EncodedJSValue JIT_STUB cti_op_bitand(STUB_ARGS_DECLARATION);
	259	EncodedJSValue JIT_STUB cti_op_bitnot(STUB_ARGS_DECLARATION);
	260	EncodedJSValue JIT_STUB cti_op_bitor(STUB_ARGS_DECLARATION);
	261	EncodedJSValue JIT_STUB cti_op_bitxor(STUB_ARGS_DECLARATION);
	262	EncodedJSValue JIT_STUB cti_op_call_NotJSFunction(STUB_ARGS_DECLARATION);
	263	EncodedJSValue JIT_STUB cti_op_call_eval(STUB_ARGS_DECLARATION);
	264	EncodedJSValue JIT_STUB cti_op_construct_NotJSConstruct(STUB_ARGS_DECLARATION);
	265	EncodedJSValue JIT_STUB cti_op_convert_this(STUB_ARGS_DECLARATION);
	266	EncodedJSValue JIT_STUB cti_op_del_by_id(STUB_ARGS_DECLARATION);
	267	EncodedJSValue JIT_STUB cti_op_del_by_val(STUB_ARGS_DECLARATION);
	268	EncodedJSValue JIT_STUB cti_op_div(STUB_ARGS_DECLARATION);
	269	EncodedJSValue JIT_STUB cti_op_get_by_id(STUB_ARGS_DECLARATION);
	270	EncodedJSValue JIT_STUB cti_op_get_by_id_array_fail(STUB_ARGS_DECLARATION);
	271	EncodedJSValue JIT_STUB cti_op_get_by_id_generic(STUB_ARGS_DECLARATION);
	272	EncodedJSValue JIT_STUB cti_op_get_by_id_method_check(STUB_ARGS_DECLARATION);
ba379fdc A	273	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_fail(STUB_ARGS_DECLARATION);
	274	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list(STUB_ARGS_DECLARATION);
	275	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list_full(STUB_ARGS_DECLARATION);
ba379fdc A	276	EncodedJSValue JIT_STUB cti_op_get_by_id_self_fail(STUB_ARGS_DECLARATION);
	277	EncodedJSValue JIT_STUB cti_op_get_by_id_string_fail(STUB_ARGS_DECLARATION);
	278	EncodedJSValue JIT_STUB cti_op_get_by_val(STUB_ARGS_DECLARATION);
	279	EncodedJSValue JIT_STUB cti_op_get_by_val_byte_array(STUB_ARGS_DECLARATION);
	280	EncodedJSValue JIT_STUB cti_op_get_by_val_string(STUB_ARGS_DECLARATION);
	281	EncodedJSValue JIT_STUB cti_op_in(STUB_ARGS_DECLARATION);
	282	EncodedJSValue JIT_STUB cti_op_instanceof(STUB_ARGS_DECLARATION);
	283	EncodedJSValue JIT_STUB cti_op_is_boolean(STUB_ARGS_DECLARATION);
	284	EncodedJSValue JIT_STUB cti_op_is_function(STUB_ARGS_DECLARATION);
	285	EncodedJSValue JIT_STUB cti_op_is_number(STUB_ARGS_DECLARATION);
	286	EncodedJSValue JIT_STUB cti_op_is_object(STUB_ARGS_DECLARATION);
	287	EncodedJSValue JIT_STUB cti_op_is_string(STUB_ARGS_DECLARATION);
	288	EncodedJSValue JIT_STUB cti_op_is_undefined(STUB_ARGS_DECLARATION);
	289	EncodedJSValue JIT_STUB cti_op_less(STUB_ARGS_DECLARATION);
	290	EncodedJSValue JIT_STUB cti_op_lesseq(STUB_ARGS_DECLARATION);
	291	EncodedJSValue JIT_STUB cti_op_lshift(STUB_ARGS_DECLARATION);
	292	EncodedJSValue JIT_STUB cti_op_mod(STUB_ARGS_DECLARATION);
	293	EncodedJSValue JIT_STUB cti_op_mul(STUB_ARGS_DECLARATION);
	294	EncodedJSValue JIT_STUB cti_op_negate(STUB_ARGS_DECLARATION);
ba379fdc A	295	EncodedJSValue JIT_STUB cti_op_not(STUB_ARGS_DECLARATION);
	296	EncodedJSValue JIT_STUB cti_op_nstricteq(STUB_ARGS_DECLARATION);
	297	EncodedJSValue JIT_STUB cti_op_post_dec(STUB_ARGS_DECLARATION);
	298	EncodedJSValue JIT_STUB cti_op_post_inc(STUB_ARGS_DECLARATION);
	299	EncodedJSValue JIT_STUB cti_op_pre_dec(STUB_ARGS_DECLARATION);
	300	EncodedJSValue JIT_STUB cti_op_pre_inc(STUB_ARGS_DECLARATION);
	301	EncodedJSValue JIT_STUB cti_op_resolve(STUB_ARGS_DECLARATION);
	302	EncodedJSValue JIT_STUB cti_op_resolve_base(STUB_ARGS_DECLARATION);
	303	EncodedJSValue JIT_STUB cti_op_resolve_global(STUB_ARGS_DECLARATION);
	304	EncodedJSValue JIT_STUB cti_op_resolve_skip(STUB_ARGS_DECLARATION);
	305	EncodedJSValue JIT_STUB cti_op_resolve_with_base(STUB_ARGS_DECLARATION);
	306	EncodedJSValue JIT_STUB cti_op_rshift(STUB_ARGS_DECLARATION);
	307	EncodedJSValue JIT_STUB cti_op_strcat(STUB_ARGS_DECLARATION);
	308	EncodedJSValue JIT_STUB cti_op_stricteq(STUB_ARGS_DECLARATION);
	309	EncodedJSValue JIT_STUB cti_op_sub(STUB_ARGS_DECLARATION);
	310	EncodedJSValue JIT_STUB cti_op_throw(STUB_ARGS_DECLARATION);
	311	EncodedJSValue JIT_STUB cti_op_to_jsnumber(STUB_ARGS_DECLARATION);
	312	EncodedJSValue JIT_STUB cti_op_to_primitive(STUB_ARGS_DECLARATION);
	313	EncodedJSValue JIT_STUB cti_op_typeof(STUB_ARGS_DECLARATION);
	314	EncodedJSValue JIT_STUB cti_op_urshift(STUB_ARGS_DECLARATION);
	315	EncodedJSValue JIT_STUB cti_vm_throw(STUB_ARGS_DECLARATION);
f9bf01c6	316	EncodedJSValue JIT_STUB cti_to_object(STUB_ARGS_DECLARATION);
ba379fdc A	317	JSObject* JIT_STUB cti_op_construct_JSConstruct(STUB_ARGS_DECLARATION);
	318	JSObject* JIT_STUB cti_op_new_array(STUB_ARGS_DECLARATION);
	319	JSObject* JIT_STUB cti_op_new_error(STUB_ARGS_DECLARATION);
	320	JSObject* JIT_STUB cti_op_new_func(STUB_ARGS_DECLARATION);
	321	JSObject* JIT_STUB cti_op_new_func_exp(STUB_ARGS_DECLARATION);
	322	JSObject* JIT_STUB cti_op_new_object(STUB_ARGS_DECLARATION);
	323	JSObject* JIT_STUB cti_op_new_regexp(STUB_ARGS_DECLARATION);
	324	JSObject* JIT_STUB cti_op_push_activation(STUB_ARGS_DECLARATION);
	325	JSObject* JIT_STUB cti_op_push_new_scope(STUB_ARGS_DECLARATION);
	326	JSObject* JIT_STUB cti_op_push_scope(STUB_ARGS_DECLARATION);
	327	JSObject* JIT_STUB cti_op_put_by_id_transition_realloc(STUB_ARGS_DECLARATION);
	328	JSPropertyNameIterator* JIT_STUB cti_op_get_pnames(STUB_ARGS_DECLARATION);
	329	VoidPtrPair JIT_STUB cti_op_call_arityCheck(STUB_ARGS_DECLARATION);
	330	int JIT_STUB cti_op_eq(STUB_ARGS_DECLARATION);
	331	#if USE(JSVALUE32_64)
	332	int JIT_STUB cti_op_eq_strings(STUB_ARGS_DECLARATION);
	333	#endif
	334	int JIT_STUB cti_op_jless(STUB_ARGS_DECLARATION);
	335	int JIT_STUB cti_op_jlesseq(STUB_ARGS_DECLARATION);
	336	int JIT_STUB cti_op_jtrue(STUB_ARGS_DECLARATION);
	337	int JIT_STUB cti_op_load_varargs(STUB_ARGS_DECLARATION);
ba379fdc	338	int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS_DECLARATION);
ba379fdc	339	int JIT_STUB cti_timeout_check(STUB_ARGS_DECLARATION);
f9bf01c6	340	int JIT_STUB cti_has_property(STUB_ARGS_DECLARATION);
ba379fdc A	341	void JIT_STUB cti_op_create_arguments(STUB_ARGS_DECLARATION);
	342	void JIT_STUB cti_op_create_arguments_no_params(STUB_ARGS_DECLARATION);
	343	void JIT_STUB cti_op_debug(STUB_ARGS_DECLARATION);
	344	void JIT_STUB cti_op_end(STUB_ARGS_DECLARATION);
	345	void JIT_STUB cti_op_jmp_scopes(STUB_ARGS_DECLARATION);
	346	void JIT_STUB cti_op_pop_scope(STUB_ARGS_DECLARATION);
	347	void JIT_STUB cti_op_profile_did_call(STUB_ARGS_DECLARATION);
	348	void JIT_STUB cti_op_profile_will_call(STUB_ARGS_DECLARATION);
	349	void JIT_STUB cti_op_put_by_id(STUB_ARGS_DECLARATION);
	350	void JIT_STUB cti_op_put_by_id_fail(STUB_ARGS_DECLARATION);
	351	void JIT_STUB cti_op_put_by_id_generic(STUB_ARGS_DECLARATION);
ba379fdc A	352	void JIT_STUB cti_op_put_by_index(STUB_ARGS_DECLARATION);
ba379fdc A	353	void JIT_STUB cti_op_put_by_val(STUB_ARGS_DECLARATION);
ba379fdc A	354	void JIT_STUB cti_op_put_by_val_byte_array(STUB_ARGS_DECLARATION);
	355	void JIT_STUB cti_op_put_getter(STUB_ARGS_DECLARATION);
	356	void JIT_STUB cti_op_put_setter(STUB_ARGS_DECLARATION);
	357	void JIT_STUB cti_op_ret_scopeChain(STUB_ARGS_DECLARATION);
	358	void JIT_STUB cti_op_tear_off_activation(STUB_ARGS_DECLARATION);
	359	void JIT_STUB cti_op_tear_off_arguments(STUB_ARGS_DECLARATION);
	360	void JIT_STUB cti_register_file_check(STUB_ARGS_DECLARATION);
	361	void* JIT_STUB cti_op_call_JSFunction(STUB_ARGS_DECLARATION);
	362	void* JIT_STUB cti_op_switch_char(STUB_ARGS_DECLARATION);
	363	void* JIT_STUB cti_op_switch_imm(STUB_ARGS_DECLARATION);
	364	void* JIT_STUB cti_op_switch_string(STUB_ARGS_DECLARATION);
ba379fdc A	365	void* JIT_STUB cti_vm_lazyLinkCall(STUB_ARGS_DECLARATION);
	366	} // extern "C"
	367
	368	} // namespace JSC
	369
	370	#endif // ENABLE(JIT)
	371
	372	#endif // JITStubs_h