jit/JITStubs.h

   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 "MacroAssemblerCodeRef.h"
  33 #include "Register.h"
  34 #include "ThunkGenerators.h"
  35 #include <wtf/HashMap.h>
  36
  37 #if ENABLE(JIT)
  38
  39 namespace JSC {
  40
  41     struct StructureStubInfo;
  42
  43     class CodeBlock;
  44     class ExecutablePool;
  45     class FunctionExecutable;
  46     class Identifier;
  47     class JSGlobalData;
  48     class JSGlobalObject;
  49     class JSObject;
  50     class JSPropertyNameIterator;
  51     class JSValue;
  52     class JSValueEncodedAsPointer;
  53     class NativeExecutable;
  54     class Profiler;
  55     class PropertySlot;
  56     class PutPropertySlot;
  57     class RegisterFile;
  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); }
  66         JSObject* jsObject() { return static_cast<JSObject*>(asPointer); }
  67         Identifier& identifier() { return *static_cast<Identifier*>(asPointer); }
  68         int32_t int32() { return asInt32; }
  69         CodeBlock* codeBlock() { return static_cast<CodeBlock*>(asPointer); }
  70         FunctionExecutable* function() { return static_cast<FunctionExecutable*>(asPointer); }
  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
  78     struct TrampolineStructure {
  79         MacroAssemblerCodePtr ctiStringLengthTrampoline;
  80         MacroAssemblerCodePtr ctiVirtualCallLink;
  81         MacroAssemblerCodePtr ctiVirtualCall;
  82         RefPtr<NativeExecutable> ctiNativeCallThunk;
  83         MacroAssemblerCodePtr ctiSoftModulo;
  84     };
  85
  86 #if CPU(X86_64)
  87     struct JITStackFrame {
  88         void* reserved; // Unused
  89         JITStubArg args[6];
  90         void* padding[2]; // Maintain 32-byte stack alignment (possibly overkill).
  91
  92         void* code;
  93         RegisterFile* registerFile;
  94         CallFrame* callFrame;
  95         JSValue* exception;
  96         Profiler** enabledProfilerReference;
  97         JSGlobalData* globalData;
  98
  99         void* savedRBX;
 100         void* savedR15;
 101         void* savedR14;
 102         void* savedR13;
 103         void* savedR12;
 104         void* savedRBP;
 105         void* savedRIP;
 106
 107         // When JIT code makes a call, it pushes its return address just below the rest of the stack.
 108         ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
 109     };
 110 #elif CPU(X86)
 111 #if COMPILER(MSVC) || (OS(WINDOWS) && COMPILER(GCC))
 112 #pragma pack(push)
 113 #pragma pack(4)
 114 #endif // COMPILER(MSVC) || (OS(WINDOWS) && COMPILER(GCC))
 115     struct JITStackFrame {
 116         void* reserved; // Unused
 117         JITStubArg args[6];
 118 #if USE(JSVALUE32_64)
 119         void* padding[2]; // Maintain 16-byte stack alignment.
 120 #endif
 121
 122         void* savedEBX;
 123         void* savedEDI;
 124         void* savedESI;
 125         void* savedEBP;
 126         void* savedEIP;
 127
 128         void* code;
 129         RegisterFile* registerFile;
 130         CallFrame* callFrame;
 131         JSValue* exception;
 132         Profiler** enabledProfilerReference;
 133         JSGlobalData* globalData;
 134
 135         // When JIT code makes a call, it pushes its return address just below the rest of the stack.
 136         ReturnAddressPtr* returnAddressSlot() { return reinterpret_cast<ReturnAddressPtr*>(this) - 1; }
 137     };
 138 #if COMPILER(MSVC) || (OS(WINDOWS) && COMPILER(GCC))
 139 #pragma pack(pop)
 140 #endif // COMPILER(MSVC) || (OS(WINDOWS) && COMPILER(GCC))
 141 #elif CPU(ARM_THUMB2)
 142     struct JITStackFrame {
 143         void* reserved; // Unused
 144         JITStubArg args[6];
 145 #if USE(JSVALUE32_64)
 146         void* padding[2]; // Maintain 16-byte stack alignment.
 147 #endif
 148
 149         ReturnAddressPtr thunkReturnAddress;
 150
 151         void* preservedReturnAddress;
 152         void* preservedR4;
 153         void* preservedR5;
 154         void* preservedR6;
 155
 156         // These arguments passed in r1..r3 (r0 contained the entry code pointed, which is not preserved)
 157         RegisterFile* registerFile;
 158         CallFrame* callFrame;
 159         JSValue* exception;
 160
 161         void* padding2;
 162
 163         // These arguments passed on the stack.
 164         Profiler** enabledProfilerReference;
 165         JSGlobalData* globalData;
 166
 167         ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
 168     };
 169 #elif CPU(ARM_TRADITIONAL)
 170     struct JITStackFrame {
 171         JITStubArg padding; // Unused
 172         JITStubArg args[7];
 173
 174         ReturnAddressPtr thunkReturnAddress;
 175
 176         void* preservedR4;
 177         void* preservedR5;
 178         void* preservedR6;
 179         void* preservedR7;
 180         void* preservedR8;
 181         void* preservedLink;
 182
 183         RegisterFile* registerFile;
 184         CallFrame* callFrame;
 185         JSValue* exception;
 186
 187         // These arguments passed on the stack.
 188         Profiler** enabledProfilerReference;
 189         JSGlobalData* globalData;
 190
 191         // When JIT code makes a call, it pushes its return address just below the rest of the stack.
 192         ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
 193     };
 194 #elif CPU(MIPS)
 195     struct JITStackFrame {
 196         void* reserved; // Unused
 197         JITStubArg args[6];
 198
 199         void* preservedGP; // store GP when using PIC code
 200         void* preservedS0;
 201         void* preservedS1;
 202         void* preservedS2;
 203         void* preservedReturnAddress;
 204
 205         ReturnAddressPtr thunkReturnAddress;
 206
 207         // These arguments passed in a1..a3 (a0 contained the entry code pointed, which is not preserved)
 208         RegisterFile* registerFile;
 209         CallFrame* callFrame;
 210         JSValue* exception;
 211
 212         // These arguments passed on the stack.
 213         Profiler** enabledProfilerReference;
 214         JSGlobalData* globalData;
 215
 216         ReturnAddressPtr* returnAddressSlot() { return &thunkReturnAddress; }
 217     };
 218 #else
 219 #error "JITStackFrame not defined for this platform."
 220 #endif
 221
 222 #define JITSTACKFRAME_ARGS_INDEX (OBJECT_OFFSETOF(JITStackFrame, args) / sizeof(void*))
 223
 224 #if USE(JIT_STUB_ARGUMENT_VA_LIST)
 225     #define STUB_ARGS_DECLARATION void* args, ...
 226     #define STUB_ARGS (reinterpret_cast<void**>(vl_args) - 1)
 227
 228     #if COMPILER(MSVC)
 229     #define JIT_STUB __cdecl
 230     #else
 231     #define JIT_STUB
 232     #endif
 233 #else
 234     #define STUB_ARGS_DECLARATION void** args
 235     #define STUB_ARGS (args)
 236
 237     #if CPU(X86) && COMPILER(MSVC)
 238     #define JIT_STUB __fastcall
 239     #elif CPU(X86) && COMPILER(GCC)
 240     #define JIT_STUB  __attribute__ ((fastcall))
 241     #else
 242     #define JIT_STUB
 243     #endif
 244 #endif
 245
 246 #if CPU(X86_64)
 247     struct VoidPtrPair {
 248         void* first;
 249         void* second;
 250     };
 251     #define RETURN_POINTER_PAIR(a,b) VoidPtrPair pair = { a, b }; return pair
 252 #else
 253     // MSVC doesn't support returning a two-value struct in two registers, so
 254     // we cast the struct to int64_t instead.
 255     typedef uint64_t VoidPtrPair;
 256     union VoidPtrPairUnion {
 257         struct { void* first; void* second; } s;
 258         VoidPtrPair i;
 259     };
 260     #define RETURN_POINTER_PAIR(a,b) VoidPtrPairUnion pair = {{ a, b }}; return pair.i
 261 #endif
 262
 263     extern "C" void ctiVMThrowTrampoline();
 264     extern "C" void ctiOpThrowNotCaught();
 265     extern "C" EncodedJSValue ctiTrampoline(void* code, RegisterFile*, CallFrame*, JSValue* exception, Profiler**, JSGlobalData*);
 266
 267     class JITThunks {
 268     public:
 269         JITThunks(JSGlobalData*);
 270         ~JITThunks();
 271
 272         static void tryCacheGetByID(CallFrame*, CodeBlock*, ReturnAddressPtr returnAddress, JSValue baseValue, const Identifier& propertyName, const PropertySlot&, StructureStubInfo* stubInfo);
 273         static void tryCachePutByID(CallFrame*, CodeBlock*, ReturnAddressPtr returnAddress, JSValue baseValue, const PutPropertySlot&, StructureStubInfo* stubInfo, bool direct);
 274
 275         MacroAssemblerCodePtr ctiStringLengthTrampoline() { return m_trampolineStructure.ctiStringLengthTrampoline; }
 276         MacroAssemblerCodePtr ctiVirtualCallLink() { return m_trampolineStructure.ctiVirtualCallLink; }
 277         MacroAssemblerCodePtr ctiVirtualCall() { return m_trampolineStructure.ctiVirtualCall; }
 278         NativeExecutable* ctiNativeCallThunk() { return m_trampolineStructure.ctiNativeCallThunk.get(); }
 279         MacroAssemblerCodePtr ctiSoftModulo() { return m_trampolineStructure.ctiSoftModulo; }
 280
 281         NativeExecutable* specializedThunk(JSGlobalData* globalData, ThunkGenerator generator);
 282     private:
 283         typedef HashMap<ThunkGenerator, RefPtr<NativeExecutable> > ThunkMap;
 284         ThunkMap m_thunkMap;
 285         RefPtr<ExecutablePool> m_executablePool;
 286
 287         TrampolineStructure m_trampolineStructure;
 288     };
 289
 290 extern "C" {
 291     EncodedJSValue JIT_STUB cti_op_add(STUB_ARGS_DECLARATION);
 292     EncodedJSValue JIT_STUB cti_op_bitand(STUB_ARGS_DECLARATION);
 293     EncodedJSValue JIT_STUB cti_op_bitnot(STUB_ARGS_DECLARATION);
 294     EncodedJSValue JIT_STUB cti_op_bitor(STUB_ARGS_DECLARATION);
 295     EncodedJSValue JIT_STUB cti_op_bitxor(STUB_ARGS_DECLARATION);
 296     EncodedJSValue JIT_STUB cti_op_call_NotJSFunction(STUB_ARGS_DECLARATION);
 297     EncodedJSValue JIT_STUB cti_op_call_eval(STUB_ARGS_DECLARATION);
 298     EncodedJSValue JIT_STUB cti_op_construct_NotJSConstruct(STUB_ARGS_DECLARATION);
 299     EncodedJSValue JIT_STUB cti_op_convert_this(STUB_ARGS_DECLARATION);
 300     EncodedJSValue JIT_STUB cti_op_del_by_id(STUB_ARGS_DECLARATION);
 301     EncodedJSValue JIT_STUB cti_op_del_by_val(STUB_ARGS_DECLARATION);
 302     EncodedJSValue JIT_STUB cti_op_div(STUB_ARGS_DECLARATION);
 303     EncodedJSValue JIT_STUB cti_op_get_by_id(STUB_ARGS_DECLARATION);
 304     EncodedJSValue JIT_STUB cti_op_get_by_id_array_fail(STUB_ARGS_DECLARATION);
 305     EncodedJSValue JIT_STUB cti_op_get_by_id_generic(STUB_ARGS_DECLARATION);
 306     EncodedJSValue JIT_STUB cti_op_get_by_id_method_check(STUB_ARGS_DECLARATION);
 307     EncodedJSValue JIT_STUB cti_op_get_by_id_getter_stub(STUB_ARGS_DECLARATION);
 308     EncodedJSValue JIT_STUB cti_op_get_by_id_custom_stub(STUB_ARGS_DECLARATION);
 309     EncodedJSValue JIT_STUB cti_op_get_by_id_proto_fail(STUB_ARGS_DECLARATION);
 310     EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list(STUB_ARGS_DECLARATION);
 311     EncodedJSValue JIT_STUB cti_op_get_by_id_proto_list_full(STUB_ARGS_DECLARATION);
 312     EncodedJSValue JIT_STUB cti_op_get_by_id_self_fail(STUB_ARGS_DECLARATION);
 313     EncodedJSValue JIT_STUB cti_op_get_by_id_string_fail(STUB_ARGS_DECLARATION);
 314     EncodedJSValue JIT_STUB cti_op_get_by_val(STUB_ARGS_DECLARATION);
 315     EncodedJSValue JIT_STUB cti_op_get_by_val_byte_array(STUB_ARGS_DECLARATION);
 316     EncodedJSValue JIT_STUB cti_op_get_by_val_string(STUB_ARGS_DECLARATION);
 317     EncodedJSValue JIT_STUB cti_op_in(STUB_ARGS_DECLARATION);
 318     EncodedJSValue JIT_STUB cti_op_instanceof(STUB_ARGS_DECLARATION);
 319     EncodedJSValue JIT_STUB cti_op_is_boolean(STUB_ARGS_DECLARATION);
 320     EncodedJSValue JIT_STUB cti_op_is_function(STUB_ARGS_DECLARATION);
 321     EncodedJSValue JIT_STUB cti_op_is_number(STUB_ARGS_DECLARATION);
 322     EncodedJSValue JIT_STUB cti_op_is_object(STUB_ARGS_DECLARATION);
 323     EncodedJSValue JIT_STUB cti_op_is_string(STUB_ARGS_DECLARATION);
 324     EncodedJSValue JIT_STUB cti_op_is_undefined(STUB_ARGS_DECLARATION);
 325     EncodedJSValue JIT_STUB cti_op_less(STUB_ARGS_DECLARATION);
 326     EncodedJSValue JIT_STUB cti_op_lesseq(STUB_ARGS_DECLARATION);
 327     EncodedJSValue JIT_STUB cti_op_lshift(STUB_ARGS_DECLARATION);
 328     EncodedJSValue JIT_STUB cti_op_mod(STUB_ARGS_DECLARATION);
 329     EncodedJSValue JIT_STUB cti_op_mul(STUB_ARGS_DECLARATION);
 330     EncodedJSValue JIT_STUB cti_op_negate(STUB_ARGS_DECLARATION);
 331     EncodedJSValue JIT_STUB cti_op_not(STUB_ARGS_DECLARATION);
 332     EncodedJSValue JIT_STUB cti_op_nstricteq(STUB_ARGS_DECLARATION);
 333     EncodedJSValue JIT_STUB cti_op_post_dec(STUB_ARGS_DECLARATION);
 334     EncodedJSValue JIT_STUB cti_op_post_inc(STUB_ARGS_DECLARATION);
 335     EncodedJSValue JIT_STUB cti_op_pre_dec(STUB_ARGS_DECLARATION);
 336     EncodedJSValue JIT_STUB cti_op_pre_inc(STUB_ARGS_DECLARATION);
 337     EncodedJSValue JIT_STUB cti_op_resolve(STUB_ARGS_DECLARATION);
 338     EncodedJSValue JIT_STUB cti_op_resolve_base(STUB_ARGS_DECLARATION);
 339     EncodedJSValue JIT_STUB cti_op_resolve_global(STUB_ARGS_DECLARATION);
 340     EncodedJSValue JIT_STUB cti_op_resolve_global_dynamic(STUB_ARGS_DECLARATION);
 341     EncodedJSValue JIT_STUB cti_op_resolve_skip(STUB_ARGS_DECLARATION);
 342     EncodedJSValue JIT_STUB cti_op_resolve_with_base(STUB_ARGS_DECLARATION);
 343     EncodedJSValue JIT_STUB cti_op_rshift(STUB_ARGS_DECLARATION);
 344     EncodedJSValue JIT_STUB cti_op_strcat(STUB_ARGS_DECLARATION);
 345     EncodedJSValue JIT_STUB cti_op_stricteq(STUB_ARGS_DECLARATION);
 346     EncodedJSValue JIT_STUB cti_op_sub(STUB_ARGS_DECLARATION);
 347     EncodedJSValue JIT_STUB cti_op_throw(STUB_ARGS_DECLARATION);
 348     EncodedJSValue JIT_STUB cti_op_to_jsnumber(STUB_ARGS_DECLARATION);
 349     EncodedJSValue JIT_STUB cti_op_to_primitive(STUB_ARGS_DECLARATION);
 350     EncodedJSValue JIT_STUB cti_op_typeof(STUB_ARGS_DECLARATION);
 351     EncodedJSValue JIT_STUB cti_op_urshift(STUB_ARGS_DECLARATION);
 352     EncodedJSValue JIT_STUB cti_vm_throw(STUB_ARGS_DECLARATION);
 353     EncodedJSValue JIT_STUB cti_to_object(STUB_ARGS_DECLARATION);
 354     JSObject* JIT_STUB cti_op_construct_JSConstruct(STUB_ARGS_DECLARATION);
 355     JSObject* JIT_STUB cti_op_new_array(STUB_ARGS_DECLARATION);
 356     JSObject* JIT_STUB cti_op_new_error(STUB_ARGS_DECLARATION);
 357     JSObject* JIT_STUB cti_op_new_func(STUB_ARGS_DECLARATION);
 358     JSObject* JIT_STUB cti_op_new_func_exp(STUB_ARGS_DECLARATION);
 359     JSObject* JIT_STUB cti_op_new_object(STUB_ARGS_DECLARATION);
 360     JSObject* JIT_STUB cti_op_new_regexp(STUB_ARGS_DECLARATION);
 361     JSObject* JIT_STUB cti_op_push_activation(STUB_ARGS_DECLARATION);
 362     JSObject* JIT_STUB cti_op_push_new_scope(STUB_ARGS_DECLARATION);
 363     JSObject* JIT_STUB cti_op_push_scope(STUB_ARGS_DECLARATION);
 364     JSObject* JIT_STUB cti_op_put_by_id_transition_realloc(STUB_ARGS_DECLARATION);
 365     JSPropertyNameIterator* JIT_STUB cti_op_get_pnames(STUB_ARGS_DECLARATION);
 366     VoidPtrPair JIT_STUB cti_op_call_arityCheck(STUB_ARGS_DECLARATION);
 367     int JIT_STUB cti_op_eq(STUB_ARGS_DECLARATION);
 368     int JIT_STUB cti_op_eq_strings(STUB_ARGS_DECLARATION);
 369     int JIT_STUB cti_op_jless(STUB_ARGS_DECLARATION);
 370     int JIT_STUB cti_op_jlesseq(STUB_ARGS_DECLARATION);
 371     int JIT_STUB cti_op_jtrue(STUB_ARGS_DECLARATION);
 372     int JIT_STUB cti_op_load_varargs(STUB_ARGS_DECLARATION);
 373     int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS_DECLARATION);
 374     int JIT_STUB cti_timeout_check(STUB_ARGS_DECLARATION);
 375     int JIT_STUB cti_has_property(STUB_ARGS_DECLARATION);
 376     void JIT_STUB cti_op_create_arguments(STUB_ARGS_DECLARATION);
 377     void JIT_STUB cti_op_create_arguments_no_params(STUB_ARGS_DECLARATION);
 378     void JIT_STUB cti_op_debug(STUB_ARGS_DECLARATION);
 379     void JIT_STUB cti_op_end(STUB_ARGS_DECLARATION);
 380     void JIT_STUB cti_op_jmp_scopes(STUB_ARGS_DECLARATION);
 381     void JIT_STUB cti_op_pop_scope(STUB_ARGS_DECLARATION);
 382     void JIT_STUB cti_op_profile_did_call(STUB_ARGS_DECLARATION);
 383     void JIT_STUB cti_op_profile_will_call(STUB_ARGS_DECLARATION);
 384     void JIT_STUB cti_op_put_by_id(STUB_ARGS_DECLARATION);
 385     void JIT_STUB cti_op_put_by_id_fail(STUB_ARGS_DECLARATION);
 386     void JIT_STUB cti_op_put_by_id_generic(STUB_ARGS_DECLARATION);
 387     void JIT_STUB cti_op_put_by_id_direct(STUB_ARGS_DECLARATION);
 388     void JIT_STUB cti_op_put_by_id_direct_fail(STUB_ARGS_DECLARATION);
 389     void JIT_STUB cti_op_put_by_id_direct_generic(STUB_ARGS_DECLARATION);
 390     void JIT_STUB cti_op_put_by_index(STUB_ARGS_DECLARATION);
 391     void JIT_STUB cti_op_put_by_val(STUB_ARGS_DECLARATION);
 392     void JIT_STUB cti_op_put_by_val_byte_array(STUB_ARGS_DECLARATION);
 393     void JIT_STUB cti_op_put_getter(STUB_ARGS_DECLARATION);
 394     void JIT_STUB cti_op_put_setter(STUB_ARGS_DECLARATION);
 395     void JIT_STUB cti_op_ret_scopeChain(STUB_ARGS_DECLARATION);
 396     void JIT_STUB cti_op_tear_off_activation(STUB_ARGS_DECLARATION);
 397     void JIT_STUB cti_op_tear_off_arguments(STUB_ARGS_DECLARATION);
 398     void JIT_STUB cti_register_file_check(STUB_ARGS_DECLARATION);
 399     void* JIT_STUB cti_op_call_JSFunction(STUB_ARGS_DECLARATION);
 400     void* JIT_STUB cti_op_switch_char(STUB_ARGS_DECLARATION);
 401     void* JIT_STUB cti_op_switch_imm(STUB_ARGS_DECLARATION);
 402     void* JIT_STUB cti_op_switch_string(STUB_ARGS_DECLARATION);
 403     void* JIT_STUB cti_vm_lazyLinkCall(STUB_ARGS_DECLARATION);
 404 } // extern "C"
 405
 406 } // namespace JSC
 407
 408 #endif // ENABLE(JIT)
 409
 410 #endif // JITStubs_h