[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 {

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

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

        JSValue jsValue() { return JSValue::decode(asEncodedJSValue); }
        Identifier& identifier() { return *static_cast<Identifier*>(asPointer); }
        int32_t int32() { return asInt32; }
        CodeBlock* codeBlock() { return static_cast<CodeBlock*>(asPointer); }
        FuncDeclNode* funcDeclNode() { return static_cast<FuncDeclNode*>(asPointer); }
        FuncExprNode* funcExprNode() { return static_cast<FuncExprNode*>(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 PLATFORM(X86_64)
    struct JITStackFrame {
        void* reserved; // Unused
        JITStubArg args[6];
        void* padding[2]; // Maintain 32-byte stack alignment (possibly overkill).

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

        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; }
    };
#elif PLATFORM(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 PLATFORM_ARM_ARCH(7)
    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;

        // These arguments passed on the stack.
        Profiler** enabledProfilerReference;
        JSGlobalData* globalData;
        
        ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
    };
#else
#error "JITStackFrame not defined for this platform."
#endif

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

#if PLATFORM(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(
#if PLATFORM(X86_64)
            // FIXME: (bug #22910) this will force all arguments onto the stack (regparm(0) does not appear to have any effect).
            // We can allow register passing here, and move the writes of these values into the trampoline.
            void*, void*, void*, void*, void*, void*,
#endif
            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&);
        static void tryCachePutByID(CallFrame*, CodeBlock*, ReturnAddressPtr returnAddress, JSValue baseValue, const PutPropertySlot&);
        
        MacroAssemblerCodePtr ctiStringLengthTrampoline() { return m_ctiStringLengthTrampoline; }
        MacroAssemblerCodePtr ctiVirtualCallPreLink() { return m_ctiVirtualCallPreLink; }
        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_ctiVirtualCallPreLink;
        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_method_check_second(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_second(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_next_pname(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);
    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_less(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_op_loop_if_true(STUB_ARGS_DECLARATION);
    int JIT_STUB cti_timeout_check(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_id_second(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_array(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_dontLazyLinkCall(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
	41	class CodeBlock;
	42	class ExecutablePool;
	43	class Identifier;
	44	class JSGlobalData;
	45	class JSGlobalData;
	46	class JSObject;
	47	class JSPropertyNameIterator;
	48	class JSValue;
	49	class JSValueEncodedAsPointer;
	50	class Profiler;
	51	class PropertySlot;
	52	class PutPropertySlot;
	53	class RegisterFile;
	54	class FuncDeclNode;
	55	class FuncExprNode;
	56	class JSGlobalObject;
	57	class RegExp;
	58
	59	union JITStubArg {
	60	void* asPointer;
	61	EncodedJSValue asEncodedJSValue;
	62	int32_t asInt32;
	63
	64	JSValue jsValue() { return JSValue::decode(asEncodedJSValue); }
65	Identifier& identifier() { return static_cast<Identifier>(asPointer); }
66	int32_t int32() { return asInt32; }
67	CodeBlock* codeBlock() { return static_cast<CodeBlock*>(asPointer); }
68	FuncDeclNode* funcDeclNode() { return static_cast<FuncDeclNode*>(asPointer); }
69	FuncExprNode* funcExprNode() { return static_cast<FuncExprNode*>(asPointer); }
70	RegExp* regExp() { return static_cast<RegExp*>(asPointer); }
71	JSPropertyNameIterator* propertyNameIterator() { return static_cast<JSPropertyNameIterator*>(asPointer); }
72	JSGlobalObject* globalObject() { return static_cast<JSGlobalObject*>(asPointer); }
73	JSString* jsString() { return static_cast<JSString*>(asPointer); }
74	ReturnAddressPtr returnAddress() { return ReturnAddressPtr(asPointer); }
75	};
76
77	#if PLATFORM(X86_64)
78	struct JITStackFrame {
79	void* reserved; // Unused
80	JITStubArg args[6];
81	void* padding[2]; // Maintain 32-byte stack alignment (possibly overkill).
82
83	void* savedRBX;
84	void* savedR15;
85	void* savedR14;
86	void* savedR13;
87	void* savedR12;
88	void* savedRBP;
89	void* savedRIP;
90
91	void* code;
92	RegisterFile* registerFile;
93	CallFrame* callFrame;
94	JSValue* exception;
95	Profiler** enabledProfilerReference;
96	JSGlobalData* globalData;
97
98	// When JIT code makes a call, it pushes its return address just below the rest of the stack.
99	ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
100	};
101	#elif PLATFORM(X86)
102	#if COMPILER(MSVC)
103	#pragma pack(push)
104	#pragma pack(4)
105	#endif // COMPILER(MSVC)
106	struct JITStackFrame {
107	void* reserved; // Unused
108	JITStubArg args[6];
109	#if USE(JSVALUE32_64)
110	void* padding[2]; // Maintain 16-byte stack alignment.
111	#endif
112
113	void* savedEBX;
114	void* savedEDI;
115	void* savedESI;
116	void* savedEBP;
117	void* savedEIP;
118
119	void* code;
120	RegisterFile* registerFile;
121	CallFrame* callFrame;
122	JSValue* exception;
123	Profiler** enabledProfilerReference;
124	JSGlobalData* globalData;
125
126	// When JIT code makes a call, it pushes its return address just below the rest of the stack.
127	ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
128	};
129	#if COMPILER(MSVC)
130	#pragma pack(pop)
131	#endif // COMPILER(MSVC)
132	#elif PLATFORM_ARM_ARCH(7)
133	struct JITStackFrame {
134	void* reserved; // Unused
135	JITStubArg args[6];
136	#if USE(JSVALUE32_64)
137	void* padding[2]; // Maintain 16-byte stack alignment.
138	#endif
139
140	ReturnAddressPtr thunkReturnAddress;
141
142	void* preservedReturnAddress;
143	void* preservedR4;
144	void* preservedR5;
145	void* preservedR6;
146
147	// These arguments passed in r1..r3 (r0 contained the entry code pointed, which is not preserved)
148	RegisterFile* registerFile;
149	CallFrame* callFrame;
150	JSValue* exception;
151
152	// These arguments passed on the stack.
153	Profiler** enabledProfilerReference;
154	JSGlobalData* globalData;
155
156	ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
157	};
158	#else
159	#error "JITStackFrame not defined for this platform."
160	#endif
161
162	#if USE(JIT_STUB_ARGUMENT_VA_LIST)
163	#define STUB_ARGS_DECLARATION void* args, ...
164	#define STUB_ARGS (reinterpret_cast<void**>(vl_args) - 1)
165
166	#if COMPILER(MSVC)
167	#define JIT_STUB __cdecl
168	#else
169	#define JIT_STUB
170	#endif
171	#else
172	#define STUB_ARGS_DECLARATION void** args
173	#define STUB_ARGS (args)
174
175	#if PLATFORM(X86) && COMPILER(MSVC)
176	#define JIT_STUB __fastcall
177	#elif PLATFORM(X86) && COMPILER(GCC)
178	#define JIT_STUB __attribute__ ((fastcall))
179	#else
180	#define JIT_STUB
181	#endif
182	#endif
183
184	#if PLATFORM(X86_64)
185	struct VoidPtrPair {
186	void* first;
187	void* second;
188	};
189	#define RETURN_POINTER_PAIR(a,b) VoidPtrPair pair = { a, b }; return pair
190	#else
191	// MSVC doesn't support returning a two-value struct in two registers, so
192	// we cast the struct to int64_t instead.
193	typedef uint64_t VoidPtrPair;
194	union VoidPtrPairUnion {
195	struct { void* first; void* second; } s;
196	VoidPtrPair i;
197	};
198	#define RETURN_POINTER_PAIR(a,b) VoidPtrPairUnion pair = {{ a, b }}; return pair.i
199	#endif
200
201	extern "C" void ctiVMThrowTrampoline();
202	extern "C" void ctiOpThrowNotCaught();
203	extern "C" EncodedJSValue ctiTrampoline(
204	#if PLATFORM(X86_64)
205	// FIXME: (bug #22910) this will force all arguments onto the stack (regparm(0) does not appear to have any effect).
206	// We can allow register passing here, and move the writes of these values into the trampoline.
207	void, void, void, void, void, void,
208	#endif
209	void* code, RegisterFile, CallFrame, JSValue* exception, Profiler*, JSGlobalData);
210
211	class JITThunks {
212	public:
213	JITThunks(JSGlobalData*);
214
215	static void tryCacheGetByID(CallFrame, CodeBlock, ReturnAddressPtr returnAddress, JSValue baseValue, const Identifier& propertyName, const PropertySlot&);
216	static void tryCachePutByID(CallFrame, CodeBlock, ReturnAddressPtr returnAddress, JSValue baseValue, const PutPropertySlot&);
217
218	MacroAssemblerCodePtr ctiStringLengthTrampoline() { return m_ctiStringLengthTrampoline; }
219	MacroAssemblerCodePtr ctiVirtualCallPreLink() { return m_ctiVirtualCallPreLink; }
220	MacroAssemblerCodePtr ctiVirtualCallLink() { return m_ctiVirtualCallLink; }
221	MacroAssemblerCodePtr ctiVirtualCall() { return m_ctiVirtualCall; }
222	MacroAssemblerCodePtr ctiNativeCallThunk() { return m_ctiNativeCallThunk; }
223
224	private:
225	RefPtr<ExecutablePool> m_executablePool;
226
227	MacroAssemblerCodePtr m_ctiStringLengthTrampoline;
228	MacroAssemblerCodePtr m_ctiVirtualCallPreLink;
229	MacroAssemblerCodePtr m_ctiVirtualCallLink;
230	MacroAssemblerCodePtr m_ctiVirtualCall;
231	MacroAssemblerCodePtr m_ctiNativeCallThunk;
232	};
233
234	extern "C" {
235	EncodedJSValue JIT_STUB cti_op_add(STUB_ARGS_DECLARATION);
236	EncodedJSValue JIT_STUB cti_op_bitand(STUB_ARGS_DECLARATION);
237	EncodedJSValue JIT_STUB cti_op_bitnot(STUB_ARGS_DECLARATION);
238	EncodedJSValue JIT_STUB cti_op_bitor(STUB_ARGS_DECLARATION);
239	EncodedJSValue JIT_STUB cti_op_bitxor(STUB_ARGS_DECLARATION);
240	EncodedJSValue JIT_STUB cti_op_call_NotJSFunction(STUB_ARGS_DECLARATION);
241	EncodedJSValue JIT_STUB cti_op_call_eval(STUB_ARGS_DECLARATION);
242	EncodedJSValue JIT_STUB cti_op_construct_NotJSConstruct(STUB_ARGS_DECLARATION);
243	EncodedJSValue JIT_STUB cti_op_convert_this(STUB_ARGS_DECLARATION);
244	EncodedJSValue JIT_STUB cti_op_del_by_id(STUB_ARGS_DECLARATION);
245	EncodedJSValue JIT_STUB cti_op_del_by_val(STUB_ARGS_DECLARATION);
246	EncodedJSValue JIT_STUB cti_op_div(STUB_ARGS_DECLARATION);
247	EncodedJSValue JIT_STUB cti_op_get_by_id(STUB_ARGS_DECLARATION);
248	EncodedJSValue JIT_STUB cti_op_get_by_id_array_fail(STUB_ARGS_DECLARATION);
249	EncodedJSValue JIT_STUB cti_op_get_by_id_generic(STUB_ARGS_DECLARATION);
250	EncodedJSValue JIT_STUB cti_op_get_by_id_method_check(STUB_ARGS_DECLARATION);
251	EncodedJSValue JIT_STUB cti_op_get_by_id_method_check_second(STUB_ARGS_DECLARATION);
252	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_fail(STUB_ARGS_DECLARATION);
253	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list(STUB_ARGS_DECLARATION);
254	EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list_full(STUB_ARGS_DECLARATION);
255	EncodedJSValue JIT_STUB cti_op_get_by_id_second(STUB_ARGS_DECLARATION);
256	EncodedJSValue JIT_STUB cti_op_get_by_id_self_fail(STUB_ARGS_DECLARATION);
257	EncodedJSValue JIT_STUB cti_op_get_by_id_string_fail(STUB_ARGS_DECLARATION);
258	EncodedJSValue JIT_STUB cti_op_get_by_val(STUB_ARGS_DECLARATION);
259	EncodedJSValue JIT_STUB cti_op_get_by_val_byte_array(STUB_ARGS_DECLARATION);
260	EncodedJSValue JIT_STUB cti_op_get_by_val_string(STUB_ARGS_DECLARATION);
261	EncodedJSValue JIT_STUB cti_op_in(STUB_ARGS_DECLARATION);
262	EncodedJSValue JIT_STUB cti_op_instanceof(STUB_ARGS_DECLARATION);
263	EncodedJSValue JIT_STUB cti_op_is_boolean(STUB_ARGS_DECLARATION);
264	EncodedJSValue JIT_STUB cti_op_is_function(STUB_ARGS_DECLARATION);
265	EncodedJSValue JIT_STUB cti_op_is_number(STUB_ARGS_DECLARATION);
266	EncodedJSValue JIT_STUB cti_op_is_object(STUB_ARGS_DECLARATION);
267	EncodedJSValue JIT_STUB cti_op_is_string(STUB_ARGS_DECLARATION);
268	EncodedJSValue JIT_STUB cti_op_is_undefined(STUB_ARGS_DECLARATION);
269	EncodedJSValue JIT_STUB cti_op_less(STUB_ARGS_DECLARATION);
270	EncodedJSValue JIT_STUB cti_op_lesseq(STUB_ARGS_DECLARATION);
271	EncodedJSValue JIT_STUB cti_op_lshift(STUB_ARGS_DECLARATION);
272	EncodedJSValue JIT_STUB cti_op_mod(STUB_ARGS_DECLARATION);
273	EncodedJSValue JIT_STUB cti_op_mul(STUB_ARGS_DECLARATION);
274	EncodedJSValue JIT_STUB cti_op_negate(STUB_ARGS_DECLARATION);
275	EncodedJSValue JIT_STUB cti_op_next_pname(STUB_ARGS_DECLARATION);
276	EncodedJSValue JIT_STUB cti_op_not(STUB_ARGS_DECLARATION);
277	EncodedJSValue JIT_STUB cti_op_nstricteq(STUB_ARGS_DECLARATION);
278	EncodedJSValue JIT_STUB cti_op_post_dec(STUB_ARGS_DECLARATION);
279	EncodedJSValue JIT_STUB cti_op_post_inc(STUB_ARGS_DECLARATION);
280	EncodedJSValue JIT_STUB cti_op_pre_dec(STUB_ARGS_DECLARATION);
281	EncodedJSValue JIT_STUB cti_op_pre_inc(STUB_ARGS_DECLARATION);
282	EncodedJSValue JIT_STUB cti_op_resolve(STUB_ARGS_DECLARATION);
283	EncodedJSValue JIT_STUB cti_op_resolve_base(STUB_ARGS_DECLARATION);
284	EncodedJSValue JIT_STUB cti_op_resolve_global(STUB_ARGS_DECLARATION);
285	EncodedJSValue JIT_STUB cti_op_resolve_skip(STUB_ARGS_DECLARATION);
286	EncodedJSValue JIT_STUB cti_op_resolve_with_base(STUB_ARGS_DECLARATION);
287	EncodedJSValue JIT_STUB cti_op_rshift(STUB_ARGS_DECLARATION);
288	EncodedJSValue JIT_STUB cti_op_strcat(STUB_ARGS_DECLARATION);
289	EncodedJSValue JIT_STUB cti_op_stricteq(STUB_ARGS_DECLARATION);
290	EncodedJSValue JIT_STUB cti_op_sub(STUB_ARGS_DECLARATION);
291	EncodedJSValue JIT_STUB cti_op_throw(STUB_ARGS_DECLARATION);
292	EncodedJSValue JIT_STUB cti_op_to_jsnumber(STUB_ARGS_DECLARATION);
293	EncodedJSValue JIT_STUB cti_op_to_primitive(STUB_ARGS_DECLARATION);
294	EncodedJSValue JIT_STUB cti_op_typeof(STUB_ARGS_DECLARATION);
295	EncodedJSValue JIT_STUB cti_op_urshift(STUB_ARGS_DECLARATION);
296	EncodedJSValue JIT_STUB cti_vm_throw(STUB_ARGS_DECLARATION);
297	JSObject* JIT_STUB cti_op_construct_JSConstruct(STUB_ARGS_DECLARATION);
298	JSObject* JIT_STUB cti_op_new_array(STUB_ARGS_DECLARATION);
299	JSObject* JIT_STUB cti_op_new_error(STUB_ARGS_DECLARATION);
300	JSObject* JIT_STUB cti_op_new_func(STUB_ARGS_DECLARATION);
301	JSObject* JIT_STUB cti_op_new_func_exp(STUB_ARGS_DECLARATION);
302	JSObject* JIT_STUB cti_op_new_object(STUB_ARGS_DECLARATION);
303	JSObject* JIT_STUB cti_op_new_regexp(STUB_ARGS_DECLARATION);
304	JSObject* JIT_STUB cti_op_push_activation(STUB_ARGS_DECLARATION);
305	JSObject* JIT_STUB cti_op_push_new_scope(STUB_ARGS_DECLARATION);
306	JSObject* JIT_STUB cti_op_push_scope(STUB_ARGS_DECLARATION);
307	JSObject* JIT_STUB cti_op_put_by_id_transition_realloc(STUB_ARGS_DECLARATION);
308	JSPropertyNameIterator* JIT_STUB cti_op_get_pnames(STUB_ARGS_DECLARATION);
309	VoidPtrPair JIT_STUB cti_op_call_arityCheck(STUB_ARGS_DECLARATION);
310	int JIT_STUB cti_op_eq(STUB_ARGS_DECLARATION);
311	#if USE(JSVALUE32_64)
312	int JIT_STUB cti_op_eq_strings(STUB_ARGS_DECLARATION);
313	#endif
314	int JIT_STUB cti_op_jless(STUB_ARGS_DECLARATION);
315	int JIT_STUB cti_op_jlesseq(STUB_ARGS_DECLARATION);
316	int JIT_STUB cti_op_jtrue(STUB_ARGS_DECLARATION);
317	int JIT_STUB cti_op_load_varargs(STUB_ARGS_DECLARATION);
318	int JIT_STUB cti_op_loop_if_less(STUB_ARGS_DECLARATION);
319	int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS_DECLARATION);
320	int JIT_STUB cti_op_loop_if_true(STUB_ARGS_DECLARATION);
321	int JIT_STUB cti_timeout_check(STUB_ARGS_DECLARATION);
322	void JIT_STUB cti_op_create_arguments(STUB_ARGS_DECLARATION);
323	void JIT_STUB cti_op_create_arguments_no_params(STUB_ARGS_DECLARATION);
324	void JIT_STUB cti_op_debug(STUB_ARGS_DECLARATION);
325	void JIT_STUB cti_op_end(STUB_ARGS_DECLARATION);
326	void JIT_STUB cti_op_jmp_scopes(STUB_ARGS_DECLARATION);
327	void JIT_STUB cti_op_pop_scope(STUB_ARGS_DECLARATION);
328	void JIT_STUB cti_op_profile_did_call(STUB_ARGS_DECLARATION);
329	void JIT_STUB cti_op_profile_will_call(STUB_ARGS_DECLARATION);
330	void JIT_STUB cti_op_put_by_id(STUB_ARGS_DECLARATION);
331	void JIT_STUB cti_op_put_by_id_fail(STUB_ARGS_DECLARATION);
332	void JIT_STUB cti_op_put_by_id_generic(STUB_ARGS_DECLARATION);
333	void JIT_STUB cti_op_put_by_id_second(STUB_ARGS_DECLARATION);
334	void JIT_STUB cti_op_put_by_index(STUB_ARGS_DECLARATION);
335	void JIT_STUB cti_op_put_by_val(STUB_ARGS_DECLARATION);
336	void JIT_STUB cti_op_put_by_val_array(STUB_ARGS_DECLARATION);
337	void JIT_STUB cti_op_put_by_val_byte_array(STUB_ARGS_DECLARATION);
338	void JIT_STUB cti_op_put_getter(STUB_ARGS_DECLARATION);
339	void JIT_STUB cti_op_put_setter(STUB_ARGS_DECLARATION);
340	void JIT_STUB cti_op_ret_scopeChain(STUB_ARGS_DECLARATION);
341	void JIT_STUB cti_op_tear_off_activation(STUB_ARGS_DECLARATION);
342	void JIT_STUB cti_op_tear_off_arguments(STUB_ARGS_DECLARATION);
343	void JIT_STUB cti_register_file_check(STUB_ARGS_DECLARATION);
344	void* JIT_STUB cti_op_call_JSFunction(STUB_ARGS_DECLARATION);
345	void* JIT_STUB cti_op_switch_char(STUB_ARGS_DECLARATION);
346	void* JIT_STUB cti_op_switch_imm(STUB_ARGS_DECLARATION);
347	void* JIT_STUB cti_op_switch_string(STUB_ARGS_DECLARATION);
348	void* JIT_STUB cti_vm_dontLazyLinkCall(STUB_ARGS_DECLARATION);
349	void* JIT_STUB cti_vm_lazyLinkCall(STUB_ARGS_DECLARATION);
350	} // extern "C"
351
352	} // namespace JSC
353
354	#endif // ENABLE(JIT)
355
356	#endif // JITStubs_h