Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "api.h" |
| 31 | #include "arguments.h" |
| 32 | #include "bootstrapper.h" |
| 33 | #include "builtins.h" |
| 34 | #include "ic-inl.h" |
| 35 | |
| 36 | namespace v8 { |
| 37 | namespace internal { |
| 38 | |
| 39 | // ---------------------------------------------------------------------------- |
| 40 | // Support macros for defining builtins in C. |
| 41 | // ---------------------------------------------------------------------------- |
| 42 | // |
| 43 | // A builtin function is defined by writing: |
| 44 | // |
| 45 | // BUILTIN(name) { |
| 46 | // ... |
| 47 | // } |
| 48 | // BUILTIN_END |
| 49 | // |
| 50 | // In the body of the builtin function, the variable 'receiver' is visible. |
| 51 | // The arguments can be accessed through the Arguments object args. |
| 52 | // |
| 53 | // args[0]: Receiver (also available as 'receiver') |
| 54 | // args[1]: First argument |
| 55 | // ... |
| 56 | // args[n]: Last argument |
| 57 | // args.length(): Number of arguments including the receiver. |
| 58 | // ---------------------------------------------------------------------------- |
| 59 | |
| 60 | |
| 61 | // TODO(428): We should consider passing whether or not the |
| 62 | // builtin was invoked as a constructor as part of the |
| 63 | // arguments. Maybe we also want to pass the called function? |
| 64 | #define BUILTIN(name) \ |
| 65 | static Object* Builtin_##name(Arguments args) { \ |
| 66 | Handle<Object> receiver = args.at<Object>(0); |
| 67 | |
| 68 | |
| 69 | #define BUILTIN_END \ |
| 70 | return Heap::undefined_value(); \ |
| 71 | } |
| 72 | |
| 73 | |
| 74 | static inline bool CalledAsConstructor() { |
| 75 | #ifdef DEBUG |
| 76 | // Calculate the result using a full stack frame iterator and check |
| 77 | // that the state of the stack is as we assume it to be in the |
| 78 | // code below. |
| 79 | StackFrameIterator it; |
| 80 | ASSERT(it.frame()->is_exit()); |
| 81 | it.Advance(); |
| 82 | StackFrame* frame = it.frame(); |
| 83 | bool reference_result = frame->is_construct(); |
| 84 | #endif |
| 85 | Address fp = Top::c_entry_fp(Top::GetCurrentThread()); |
| 86 | // Because we know fp points to an exit frame we can use the relevant |
| 87 | // part of ExitFrame::ComputeCallerState directly. |
| 88 | const int kCallerOffset = ExitFrameConstants::kCallerFPOffset; |
| 89 | Address caller_fp = Memory::Address_at(fp + kCallerOffset); |
| 90 | // This inlines the part of StackFrame::ComputeType that grabs the |
| 91 | // type of the current frame. Note that StackFrame::ComputeType |
| 92 | // has been specialized for each architecture so if any one of them |
| 93 | // changes this code has to be changed as well. |
| 94 | const int kMarkerOffset = StandardFrameConstants::kMarkerOffset; |
| 95 | const Smi* kConstructMarker = Smi::FromInt(StackFrame::CONSTRUCT); |
| 96 | Object* marker = Memory::Object_at(caller_fp + kMarkerOffset); |
| 97 | bool result = (marker == kConstructMarker); |
| 98 | ASSERT_EQ(result, reference_result); |
| 99 | return result; |
| 100 | } |
| 101 | |
| 102 | // ---------------------------------------------------------------------------- |
| 103 | |
| 104 | |
| 105 | Handle<Code> Builtins::GetCode(JavaScript id, bool* resolved) { |
| 106 | Code* code = Builtins::builtin(Builtins::Illegal); |
| 107 | *resolved = false; |
| 108 | |
| 109 | if (Top::context() != NULL) { |
| 110 | Object* object = Top::builtins()->javascript_builtin(id); |
| 111 | if (object->IsJSFunction()) { |
| 112 | Handle<JSFunction> function(JSFunction::cast(object)); |
| 113 | // Make sure the number of parameters match the formal parameter count. |
| 114 | ASSERT(function->shared()->formal_parameter_count() == |
| 115 | Builtins::GetArgumentsCount(id)); |
| 116 | if (function->is_compiled() || CompileLazy(function, CLEAR_EXCEPTION)) { |
| 117 | code = function->code(); |
| 118 | *resolved = true; |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | return Handle<Code>(code); |
| 124 | } |
| 125 | |
| 126 | |
| 127 | BUILTIN(Illegal) { |
| 128 | UNREACHABLE(); |
| 129 | } |
| 130 | BUILTIN_END |
| 131 | |
| 132 | |
| 133 | BUILTIN(EmptyFunction) { |
| 134 | } |
| 135 | BUILTIN_END |
| 136 | |
| 137 | |
| 138 | BUILTIN(ArrayCodeGeneric) { |
| 139 | Counters::array_function_runtime.Increment(); |
| 140 | |
| 141 | JSArray* array; |
| 142 | if (CalledAsConstructor()) { |
| 143 | array = JSArray::cast(*receiver); |
| 144 | } else { |
| 145 | // Allocate the JS Array |
| 146 | JSFunction* constructor = |
| 147 | Top::context()->global_context()->array_function(); |
| 148 | Object* obj = Heap::AllocateJSObject(constructor); |
| 149 | if (obj->IsFailure()) return obj; |
| 150 | array = JSArray::cast(obj); |
| 151 | } |
| 152 | |
| 153 | // 'array' now contains the JSArray we should initialize. |
| 154 | |
| 155 | // Optimize the case where there is one argument and the argument is a |
| 156 | // small smi. |
| 157 | if (args.length() == 2) { |
| 158 | Object* obj = args[1]; |
| 159 | if (obj->IsSmi()) { |
| 160 | int len = Smi::cast(obj)->value(); |
| 161 | if (len >= 0 && len < JSObject::kInitialMaxFastElementArray) { |
| 162 | Object* obj = Heap::AllocateFixedArrayWithHoles(len); |
| 163 | if (obj->IsFailure()) return obj; |
| 164 | array->SetContent(FixedArray::cast(obj)); |
| 165 | return array; |
| 166 | } |
| 167 | } |
| 168 | // Take the argument as the length. |
| 169 | obj = array->Initialize(0); |
| 170 | if (obj->IsFailure()) return obj; |
| 171 | return array->SetElementsLength(args[1]); |
| 172 | } |
| 173 | |
| 174 | // Optimize the case where there are no parameters passed. |
| 175 | if (args.length() == 1) { |
| 176 | return array->Initialize(JSArray::kPreallocatedArrayElements); |
| 177 | } |
| 178 | |
| 179 | // Take the arguments as elements. |
| 180 | int number_of_elements = args.length() - 1; |
| 181 | Smi* len = Smi::FromInt(number_of_elements); |
| 182 | Object* obj = Heap::AllocateFixedArrayWithHoles(len->value()); |
| 183 | if (obj->IsFailure()) return obj; |
| 184 | FixedArray* elms = FixedArray::cast(obj); |
| 185 | WriteBarrierMode mode = elms->GetWriteBarrierMode(); |
| 186 | // Fill in the content |
| 187 | for (int index = 0; index < number_of_elements; index++) { |
| 188 | elms->set(index, args[index+1], mode); |
| 189 | } |
| 190 | |
| 191 | // Set length and elements on the array. |
| 192 | array->set_elements(FixedArray::cast(obj)); |
| 193 | array->set_length(len, SKIP_WRITE_BARRIER); |
| 194 | |
| 195 | return array; |
| 196 | } |
| 197 | BUILTIN_END |
| 198 | |
| 199 | |
| 200 | BUILTIN(ArrayPush) { |
| 201 | JSArray* array = JSArray::cast(*receiver); |
| 202 | ASSERT(array->HasFastElements()); |
| 203 | |
| 204 | // Make sure we have space for the elements. |
| 205 | int len = Smi::cast(array->length())->value(); |
| 206 | |
| 207 | // Set new length. |
| 208 | int new_length = len + args.length() - 1; |
| 209 | FixedArray* elms = FixedArray::cast(array->elements()); |
| 210 | |
| 211 | if (new_length <= elms->length()) { |
| 212 | // Backing storage has extra space for the provided values. |
| 213 | for (int index = 0; index < args.length() - 1; index++) { |
| 214 | elms->set(index + len, args[index+1]); |
| 215 | } |
| 216 | } else { |
| 217 | // New backing storage is needed. |
| 218 | int capacity = new_length + (new_length >> 1) + 16; |
| 219 | Object* obj = Heap::AllocateFixedArrayWithHoles(capacity); |
| 220 | if (obj->IsFailure()) return obj; |
| 221 | FixedArray* new_elms = FixedArray::cast(obj); |
| 222 | WriteBarrierMode mode = new_elms->GetWriteBarrierMode(); |
| 223 | // Fill out the new array with old elements. |
| 224 | for (int i = 0; i < len; i++) new_elms->set(i, elms->get(i), mode); |
| 225 | // Add the provided values. |
| 226 | for (int index = 0; index < args.length() - 1; index++) { |
| 227 | new_elms->set(index + len, args[index+1], mode); |
| 228 | } |
| 229 | // Set the new backing storage. |
| 230 | array->set_elements(new_elms); |
| 231 | } |
| 232 | // Set the length. |
| 233 | array->set_length(Smi::FromInt(new_length), SKIP_WRITE_BARRIER); |
| 234 | return array->length(); |
| 235 | } |
| 236 | BUILTIN_END |
| 237 | |
| 238 | |
| 239 | BUILTIN(ArrayPop) { |
| 240 | JSArray* array = JSArray::cast(*receiver); |
| 241 | ASSERT(array->HasFastElements()); |
| 242 | Object* undefined = Heap::undefined_value(); |
| 243 | |
| 244 | int len = Smi::cast(array->length())->value(); |
| 245 | if (len == 0) return undefined; |
| 246 | |
| 247 | // Get top element |
| 248 | FixedArray* elms = FixedArray::cast(array->elements()); |
| 249 | Object* top = elms->get(len - 1); |
| 250 | |
| 251 | // Set the length. |
| 252 | array->set_length(Smi::FromInt(len - 1), SKIP_WRITE_BARRIER); |
| 253 | |
| 254 | if (!top->IsTheHole()) { |
| 255 | // Delete the top element. |
| 256 | elms->set_the_hole(len - 1); |
| 257 | return top; |
| 258 | } |
| 259 | |
| 260 | // Remember to check the prototype chain. |
| 261 | JSFunction* array_function = |
| 262 | Top::context()->global_context()->array_function(); |
| 263 | JSObject* prototype = JSObject::cast(array_function->prototype()); |
| 264 | top = prototype->GetElement(len - 1); |
| 265 | |
| 266 | return top; |
| 267 | } |
| 268 | BUILTIN_END |
| 269 | |
| 270 | |
| 271 | // ----------------------------------------------------------------------------- |
| 272 | // |
| 273 | |
| 274 | |
| 275 | // Returns the holder JSObject if the function can legally be called |
| 276 | // with this receiver. Returns Heap::null_value() if the call is |
| 277 | // illegal. Any arguments that don't fit the expected type is |
| 278 | // overwritten with undefined. Arguments that do fit the expected |
| 279 | // type is overwritten with the object in the prototype chain that |
| 280 | // actually has that type. |
| 281 | static inline Object* TypeCheck(int argc, |
| 282 | Object** argv, |
| 283 | FunctionTemplateInfo* info) { |
| 284 | Object* recv = argv[0]; |
| 285 | Object* sig_obj = info->signature(); |
| 286 | if (sig_obj->IsUndefined()) return recv; |
| 287 | SignatureInfo* sig = SignatureInfo::cast(sig_obj); |
| 288 | // If necessary, check the receiver |
| 289 | Object* recv_type = sig->receiver(); |
| 290 | |
| 291 | Object* holder = recv; |
| 292 | if (!recv_type->IsUndefined()) { |
| 293 | for (; holder != Heap::null_value(); holder = holder->GetPrototype()) { |
| 294 | if (holder->IsInstanceOf(FunctionTemplateInfo::cast(recv_type))) { |
| 295 | break; |
| 296 | } |
| 297 | } |
| 298 | if (holder == Heap::null_value()) return holder; |
| 299 | } |
| 300 | Object* args_obj = sig->args(); |
| 301 | // If there is no argument signature we're done |
| 302 | if (args_obj->IsUndefined()) return holder; |
| 303 | FixedArray* args = FixedArray::cast(args_obj); |
| 304 | int length = args->length(); |
| 305 | if (argc <= length) length = argc - 1; |
| 306 | for (int i = 0; i < length; i++) { |
| 307 | Object* argtype = args->get(i); |
| 308 | if (argtype->IsUndefined()) continue; |
| 309 | Object** arg = &argv[-1 - i]; |
| 310 | Object* current = *arg; |
| 311 | for (; current != Heap::null_value(); current = current->GetPrototype()) { |
| 312 | if (current->IsInstanceOf(FunctionTemplateInfo::cast(argtype))) { |
| 313 | *arg = current; |
| 314 | break; |
| 315 | } |
| 316 | } |
| 317 | if (current == Heap::null_value()) *arg = Heap::undefined_value(); |
| 318 | } |
| 319 | return holder; |
| 320 | } |
| 321 | |
| 322 | |
| 323 | BUILTIN(HandleApiCall) { |
| 324 | HandleScope scope; |
| 325 | bool is_construct = CalledAsConstructor(); |
| 326 | |
| 327 | // TODO(428): Remove use of static variable, handle API callbacks directly. |
| 328 | Handle<JSFunction> function = |
| 329 | Handle<JSFunction>(JSFunction::cast(Builtins::builtin_passed_function)); |
| 330 | |
| 331 | if (is_construct) { |
| 332 | Handle<FunctionTemplateInfo> desc = |
| 333 | Handle<FunctionTemplateInfo>( |
| 334 | FunctionTemplateInfo::cast(function->shared()->function_data())); |
| 335 | bool pending_exception = false; |
| 336 | Factory::ConfigureInstance(desc, Handle<JSObject>::cast(receiver), |
| 337 | &pending_exception); |
| 338 | ASSERT(Top::has_pending_exception() == pending_exception); |
| 339 | if (pending_exception) return Failure::Exception(); |
| 340 | } |
| 341 | |
| 342 | FunctionTemplateInfo* fun_data = |
| 343 | FunctionTemplateInfo::cast(function->shared()->function_data()); |
| 344 | Object* raw_holder = TypeCheck(args.length(), &args[0], fun_data); |
| 345 | |
| 346 | if (raw_holder->IsNull()) { |
| 347 | // This function cannot be called with the given receiver. Abort! |
| 348 | Handle<Object> obj = |
| 349 | Factory::NewTypeError("illegal_invocation", HandleVector(&function, 1)); |
| 350 | return Top::Throw(*obj); |
| 351 | } |
| 352 | |
| 353 | Object* raw_call_data = fun_data->call_code(); |
| 354 | if (!raw_call_data->IsUndefined()) { |
| 355 | CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data); |
| 356 | Object* callback_obj = call_data->callback(); |
| 357 | v8::InvocationCallback callback = |
| 358 | v8::ToCData<v8::InvocationCallback>(callback_obj); |
| 359 | Object* data_obj = call_data->data(); |
| 360 | Object* result; |
| 361 | |
| 362 | v8::Local<v8::Object> self = |
| 363 | v8::Utils::ToLocal(Handle<JSObject>::cast(receiver)); |
| 364 | Handle<Object> data_handle(data_obj); |
| 365 | v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| 366 | ASSERT(raw_holder->IsJSObject()); |
| 367 | v8::Local<v8::Function> callee = v8::Utils::ToLocal(function); |
| 368 | Handle<JSObject> holder_handle(JSObject::cast(raw_holder)); |
| 369 | v8::Local<v8::Object> holder = v8::Utils::ToLocal(holder_handle); |
| 370 | LOG(ApiObjectAccess("call", JSObject::cast(*receiver))); |
| 371 | v8::Arguments new_args = v8::ImplementationUtilities::NewArguments( |
| 372 | data, |
| 373 | holder, |
| 374 | callee, |
| 375 | is_construct, |
| 376 | reinterpret_cast<void**>(&args[0] - 1), |
| 377 | args.length() - 1); |
| 378 | |
| 379 | v8::Handle<v8::Value> value; |
| 380 | { |
| 381 | // Leaving JavaScript. |
| 382 | VMState state(EXTERNAL); |
| 383 | value = callback(new_args); |
| 384 | } |
| 385 | if (value.IsEmpty()) { |
| 386 | result = Heap::undefined_value(); |
| 387 | } else { |
| 388 | result = *reinterpret_cast<Object**>(*value); |
| 389 | } |
| 390 | |
| 391 | RETURN_IF_SCHEDULED_EXCEPTION(); |
| 392 | if (!is_construct || result->IsJSObject()) return result; |
| 393 | } |
| 394 | |
| 395 | return *receiver; |
| 396 | } |
| 397 | BUILTIN_END |
| 398 | |
| 399 | |
| 400 | // Helper function to handle calls to non-function objects created through the |
| 401 | // API. The object can be called as either a constructor (using new) or just as |
| 402 | // a function (without new). |
| 403 | static Object* HandleApiCallAsFunctionOrConstructor(bool is_construct_call, |
| 404 | Arguments args) { |
| 405 | // Non-functions are never called as constructors. Even if this is an object |
| 406 | // called as a constructor the delegate call is not a construct call. |
| 407 | ASSERT(!CalledAsConstructor()); |
| 408 | |
| 409 | Handle<Object> receiver = args.at<Object>(0); |
| 410 | |
| 411 | // Get the object called. |
| 412 | JSObject* obj = JSObject::cast(*receiver); |
| 413 | |
| 414 | // Get the invocation callback from the function descriptor that was |
| 415 | // used to create the called object. |
| 416 | ASSERT(obj->map()->has_instance_call_handler()); |
| 417 | JSFunction* constructor = JSFunction::cast(obj->map()->constructor()); |
| 418 | Object* template_info = constructor->shared()->function_data(); |
| 419 | Object* handler = |
| 420 | FunctionTemplateInfo::cast(template_info)->instance_call_handler(); |
| 421 | ASSERT(!handler->IsUndefined()); |
| 422 | CallHandlerInfo* call_data = CallHandlerInfo::cast(handler); |
| 423 | Object* callback_obj = call_data->callback(); |
| 424 | v8::InvocationCallback callback = |
| 425 | v8::ToCData<v8::InvocationCallback>(callback_obj); |
| 426 | |
| 427 | // Get the data for the call and perform the callback. |
| 428 | Object* data_obj = call_data->data(); |
| 429 | Object* result; |
| 430 | { HandleScope scope; |
| 431 | v8::Local<v8::Object> self = |
| 432 | v8::Utils::ToLocal(Handle<JSObject>::cast(receiver)); |
| 433 | Handle<Object> data_handle(data_obj); |
| 434 | v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| 435 | Handle<JSFunction> callee_handle(constructor); |
| 436 | v8::Local<v8::Function> callee = v8::Utils::ToLocal(callee_handle); |
| 437 | LOG(ApiObjectAccess("call non-function", JSObject::cast(*receiver))); |
| 438 | v8::Arguments new_args = v8::ImplementationUtilities::NewArguments( |
| 439 | data, |
| 440 | self, |
| 441 | callee, |
| 442 | is_construct_call, |
| 443 | reinterpret_cast<void**>(&args[0] - 1), |
| 444 | args.length() - 1); |
| 445 | v8::Handle<v8::Value> value; |
| 446 | { |
| 447 | // Leaving JavaScript. |
| 448 | VMState state(EXTERNAL); |
| 449 | value = callback(new_args); |
| 450 | } |
| 451 | if (value.IsEmpty()) { |
| 452 | result = Heap::undefined_value(); |
| 453 | } else { |
| 454 | result = *reinterpret_cast<Object**>(*value); |
| 455 | } |
| 456 | } |
| 457 | // Check for exceptions and return result. |
| 458 | RETURN_IF_SCHEDULED_EXCEPTION(); |
| 459 | return result; |
| 460 | } |
| 461 | |
| 462 | |
| 463 | // Handle calls to non-function objects created through the API. This delegate |
| 464 | // function is used when the call is a normal function call. |
| 465 | BUILTIN(HandleApiCallAsFunction) { |
| 466 | return HandleApiCallAsFunctionOrConstructor(false, args); |
| 467 | } |
| 468 | BUILTIN_END |
| 469 | |
| 470 | |
| 471 | // Handle calls to non-function objects created through the API. This delegate |
| 472 | // function is used when the call is a construct call. |
| 473 | BUILTIN(HandleApiCallAsConstructor) { |
| 474 | return HandleApiCallAsFunctionOrConstructor(true, args); |
| 475 | } |
| 476 | BUILTIN_END |
| 477 | |
| 478 | |
| 479 | // TODO(1238487): This is a nasty hack. We need to improve the way we |
| 480 | // call builtins considerable to get rid of this and the hairy macros |
| 481 | // in builtins.cc. |
| 482 | Object* Builtins::builtin_passed_function; |
| 483 | |
| 484 | |
| 485 | |
| 486 | static void Generate_LoadIC_ArrayLength(MacroAssembler* masm) { |
| 487 | LoadIC::GenerateArrayLength(masm); |
| 488 | } |
| 489 | |
| 490 | |
| 491 | static void Generate_LoadIC_StringLength(MacroAssembler* masm) { |
| 492 | LoadIC::GenerateStringLength(masm); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | static void Generate_LoadIC_FunctionPrototype(MacroAssembler* masm) { |
| 497 | LoadIC::GenerateFunctionPrototype(masm); |
| 498 | } |
| 499 | |
| 500 | |
| 501 | static void Generate_LoadIC_Initialize(MacroAssembler* masm) { |
| 502 | LoadIC::GenerateInitialize(masm); |
| 503 | } |
| 504 | |
| 505 | |
| 506 | static void Generate_LoadIC_PreMonomorphic(MacroAssembler* masm) { |
| 507 | LoadIC::GeneratePreMonomorphic(masm); |
| 508 | } |
| 509 | |
| 510 | |
| 511 | static void Generate_LoadIC_Miss(MacroAssembler* masm) { |
| 512 | LoadIC::GenerateMiss(masm); |
| 513 | } |
| 514 | |
| 515 | |
| 516 | static void Generate_LoadIC_Megamorphic(MacroAssembler* masm) { |
| 517 | LoadIC::GenerateMegamorphic(masm); |
| 518 | } |
| 519 | |
| 520 | |
| 521 | static void Generate_LoadIC_Normal(MacroAssembler* masm) { |
| 522 | LoadIC::GenerateNormal(masm); |
| 523 | } |
| 524 | |
| 525 | |
| 526 | static void Generate_KeyedLoadIC_Initialize(MacroAssembler* masm) { |
| 527 | KeyedLoadIC::GenerateInitialize(masm); |
| 528 | } |
| 529 | |
| 530 | |
| 531 | static void Generate_KeyedLoadIC_Miss(MacroAssembler* masm) { |
| 532 | KeyedLoadIC::GenerateMiss(masm); |
| 533 | } |
| 534 | |
| 535 | |
| 536 | static void Generate_KeyedLoadIC_Generic(MacroAssembler* masm) { |
| 537 | KeyedLoadIC::GenerateGeneric(masm); |
| 538 | } |
| 539 | |
| 540 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame^] | 541 | static void Generate_KeyedLoadIC_ExternalByteArray(MacroAssembler* masm) { |
| 542 | KeyedLoadIC::GenerateExternalArray(masm, kExternalByteArray); |
| 543 | } |
| 544 | |
| 545 | |
| 546 | static void Generate_KeyedLoadIC_ExternalUnsignedByteArray( |
| 547 | MacroAssembler* masm) { |
| 548 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedByteArray); |
| 549 | } |
| 550 | |
| 551 | |
| 552 | static void Generate_KeyedLoadIC_ExternalShortArray(MacroAssembler* masm) { |
| 553 | KeyedLoadIC::GenerateExternalArray(masm, kExternalShortArray); |
| 554 | } |
| 555 | |
| 556 | |
| 557 | static void Generate_KeyedLoadIC_ExternalUnsignedShortArray( |
| 558 | MacroAssembler* masm) { |
| 559 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedShortArray); |
| 560 | } |
| 561 | |
| 562 | |
| 563 | static void Generate_KeyedLoadIC_ExternalIntArray(MacroAssembler* masm) { |
| 564 | KeyedLoadIC::GenerateExternalArray(masm, kExternalIntArray); |
| 565 | } |
| 566 | |
| 567 | |
| 568 | static void Generate_KeyedLoadIC_ExternalUnsignedIntArray( |
| 569 | MacroAssembler* masm) { |
| 570 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedIntArray); |
| 571 | } |
| 572 | |
| 573 | |
| 574 | static void Generate_KeyedLoadIC_ExternalFloatArray(MacroAssembler* masm) { |
| 575 | KeyedLoadIC::GenerateExternalArray(masm, kExternalFloatArray); |
| 576 | } |
| 577 | |
| 578 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 579 | static void Generate_KeyedLoadIC_PreMonomorphic(MacroAssembler* masm) { |
| 580 | KeyedLoadIC::GeneratePreMonomorphic(masm); |
| 581 | } |
| 582 | |
| 583 | |
| 584 | static void Generate_StoreIC_Initialize(MacroAssembler* masm) { |
| 585 | StoreIC::GenerateInitialize(masm); |
| 586 | } |
| 587 | |
| 588 | |
| 589 | static void Generate_StoreIC_Miss(MacroAssembler* masm) { |
| 590 | StoreIC::GenerateMiss(masm); |
| 591 | } |
| 592 | |
| 593 | |
| 594 | static void Generate_StoreIC_ExtendStorage(MacroAssembler* masm) { |
| 595 | StoreIC::GenerateExtendStorage(masm); |
| 596 | } |
| 597 | |
| 598 | static void Generate_StoreIC_Megamorphic(MacroAssembler* masm) { |
| 599 | StoreIC::GenerateMegamorphic(masm); |
| 600 | } |
| 601 | |
| 602 | |
| 603 | static void Generate_KeyedStoreIC_Generic(MacroAssembler* masm) { |
| 604 | KeyedStoreIC::GenerateGeneric(masm); |
| 605 | } |
| 606 | |
| 607 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame^] | 608 | static void Generate_KeyedStoreIC_ExternalByteArray(MacroAssembler* masm) { |
| 609 | KeyedStoreIC::GenerateExternalArray(masm, kExternalByteArray); |
| 610 | } |
| 611 | |
| 612 | |
| 613 | static void Generate_KeyedStoreIC_ExternalUnsignedByteArray( |
| 614 | MacroAssembler* masm) { |
| 615 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedByteArray); |
| 616 | } |
| 617 | |
| 618 | |
| 619 | static void Generate_KeyedStoreIC_ExternalShortArray(MacroAssembler* masm) { |
| 620 | KeyedStoreIC::GenerateExternalArray(masm, kExternalShortArray); |
| 621 | } |
| 622 | |
| 623 | |
| 624 | static void Generate_KeyedStoreIC_ExternalUnsignedShortArray( |
| 625 | MacroAssembler* masm) { |
| 626 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedShortArray); |
| 627 | } |
| 628 | |
| 629 | |
| 630 | static void Generate_KeyedStoreIC_ExternalIntArray(MacroAssembler* masm) { |
| 631 | KeyedStoreIC::GenerateExternalArray(masm, kExternalIntArray); |
| 632 | } |
| 633 | |
| 634 | |
| 635 | static void Generate_KeyedStoreIC_ExternalUnsignedIntArray( |
| 636 | MacroAssembler* masm) { |
| 637 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedIntArray); |
| 638 | } |
| 639 | |
| 640 | |
| 641 | static void Generate_KeyedStoreIC_ExternalFloatArray(MacroAssembler* masm) { |
| 642 | KeyedStoreIC::GenerateExternalArray(masm, kExternalFloatArray); |
| 643 | } |
| 644 | |
| 645 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 646 | static void Generate_KeyedStoreIC_ExtendStorage(MacroAssembler* masm) { |
| 647 | KeyedStoreIC::GenerateExtendStorage(masm); |
| 648 | } |
| 649 | |
| 650 | |
| 651 | static void Generate_KeyedStoreIC_Miss(MacroAssembler* masm) { |
| 652 | KeyedStoreIC::GenerateMiss(masm); |
| 653 | } |
| 654 | |
| 655 | |
| 656 | static void Generate_KeyedStoreIC_Initialize(MacroAssembler* masm) { |
| 657 | KeyedStoreIC::GenerateInitialize(masm); |
| 658 | } |
| 659 | |
| 660 | |
| 661 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 662 | static void Generate_LoadIC_DebugBreak(MacroAssembler* masm) { |
| 663 | Debug::GenerateLoadICDebugBreak(masm); |
| 664 | } |
| 665 | |
| 666 | |
| 667 | static void Generate_StoreIC_DebugBreak(MacroAssembler* masm) { |
| 668 | Debug::GenerateStoreICDebugBreak(masm); |
| 669 | } |
| 670 | |
| 671 | |
| 672 | static void Generate_KeyedLoadIC_DebugBreak(MacroAssembler* masm) { |
| 673 | Debug::GenerateKeyedLoadICDebugBreak(masm); |
| 674 | } |
| 675 | |
| 676 | |
| 677 | static void Generate_KeyedStoreIC_DebugBreak(MacroAssembler* masm) { |
| 678 | Debug::GenerateKeyedStoreICDebugBreak(masm); |
| 679 | } |
| 680 | |
| 681 | |
| 682 | static void Generate_ConstructCall_DebugBreak(MacroAssembler* masm) { |
| 683 | Debug::GenerateConstructCallDebugBreak(masm); |
| 684 | } |
| 685 | |
| 686 | |
| 687 | static void Generate_Return_DebugBreak(MacroAssembler* masm) { |
| 688 | Debug::GenerateReturnDebugBreak(masm); |
| 689 | } |
| 690 | |
| 691 | |
| 692 | static void Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) { |
| 693 | Debug::GenerateStubNoRegistersDebugBreak(masm); |
| 694 | } |
| 695 | #endif |
| 696 | |
| 697 | Object* Builtins::builtins_[builtin_count] = { NULL, }; |
| 698 | const char* Builtins::names_[builtin_count] = { NULL, }; |
| 699 | |
| 700 | #define DEF_ENUM_C(name) FUNCTION_ADDR(Builtin_##name), |
| 701 | Address Builtins::c_functions_[cfunction_count] = { |
| 702 | BUILTIN_LIST_C(DEF_ENUM_C) |
| 703 | }; |
| 704 | #undef DEF_ENUM_C |
| 705 | |
| 706 | #define DEF_JS_NAME(name, ignore) #name, |
| 707 | #define DEF_JS_ARGC(ignore, argc) argc, |
| 708 | const char* Builtins::javascript_names_[id_count] = { |
| 709 | BUILTINS_LIST_JS(DEF_JS_NAME) |
| 710 | }; |
| 711 | |
| 712 | int Builtins::javascript_argc_[id_count] = { |
| 713 | BUILTINS_LIST_JS(DEF_JS_ARGC) |
| 714 | }; |
| 715 | #undef DEF_JS_NAME |
| 716 | #undef DEF_JS_ARGC |
| 717 | |
| 718 | static bool is_initialized = false; |
| 719 | void Builtins::Setup(bool create_heap_objects) { |
| 720 | ASSERT(!is_initialized); |
| 721 | |
| 722 | // Create a scope for the handles in the builtins. |
| 723 | HandleScope scope; |
| 724 | |
| 725 | struct BuiltinDesc { |
| 726 | byte* generator; |
| 727 | byte* c_code; |
| 728 | const char* s_name; // name is only used for generating log information. |
| 729 | int name; |
| 730 | Code::Flags flags; |
| 731 | }; |
| 732 | |
| 733 | #define DEF_FUNCTION_PTR_C(name) \ |
| 734 | { FUNCTION_ADDR(Generate_Adaptor), \ |
| 735 | FUNCTION_ADDR(Builtin_##name), \ |
| 736 | #name, \ |
| 737 | c_##name, \ |
| 738 | Code::ComputeFlags(Code::BUILTIN) \ |
| 739 | }, |
| 740 | |
| 741 | #define DEF_FUNCTION_PTR_A(name, kind, state) \ |
| 742 | { FUNCTION_ADDR(Generate_##name), \ |
| 743 | NULL, \ |
| 744 | #name, \ |
| 745 | name, \ |
| 746 | Code::ComputeFlags(Code::kind, NOT_IN_LOOP, state) \ |
| 747 | }, |
| 748 | |
| 749 | // Define array of pointers to generators and C builtin functions. |
| 750 | static BuiltinDesc functions[] = { |
| 751 | BUILTIN_LIST_C(DEF_FUNCTION_PTR_C) |
| 752 | BUILTIN_LIST_A(DEF_FUNCTION_PTR_A) |
| 753 | BUILTIN_LIST_DEBUG_A(DEF_FUNCTION_PTR_A) |
| 754 | // Terminator: |
| 755 | { NULL, NULL, NULL, builtin_count, static_cast<Code::Flags>(0) } |
| 756 | }; |
| 757 | |
| 758 | #undef DEF_FUNCTION_PTR_C |
| 759 | #undef DEF_FUNCTION_PTR_A |
| 760 | |
| 761 | // For now we generate builtin adaptor code into a stack-allocated |
| 762 | // buffer, before copying it into individual code objects. |
| 763 | byte buffer[4*KB]; |
| 764 | |
| 765 | // Traverse the list of builtins and generate an adaptor in a |
| 766 | // separate code object for each one. |
| 767 | for (int i = 0; i < builtin_count; i++) { |
| 768 | if (create_heap_objects) { |
| 769 | MacroAssembler masm(buffer, sizeof buffer); |
| 770 | // Generate the code/adaptor. |
| 771 | typedef void (*Generator)(MacroAssembler*, int); |
| 772 | Generator g = FUNCTION_CAST<Generator>(functions[i].generator); |
| 773 | // We pass all arguments to the generator, but it may not use all of |
| 774 | // them. This works because the first arguments are on top of the |
| 775 | // stack. |
| 776 | g(&masm, functions[i].name); |
| 777 | // Move the code into the object heap. |
| 778 | CodeDesc desc; |
| 779 | masm.GetCode(&desc); |
| 780 | Code::Flags flags = functions[i].flags; |
| 781 | Object* code; |
| 782 | { |
| 783 | // During startup it's OK to always allocate and defer GC to later. |
| 784 | // This simplifies things because we don't need to retry. |
| 785 | AlwaysAllocateScope __scope__; |
| 786 | code = Heap::CreateCode(desc, NULL, flags, masm.CodeObject()); |
| 787 | if (code->IsFailure()) { |
| 788 | v8::internal::V8::FatalProcessOutOfMemory("CreateCode"); |
| 789 | } |
| 790 | } |
| 791 | // Add any unresolved jumps or calls to the fixup list in the |
| 792 | // bootstrapper. |
| 793 | Bootstrapper::AddFixup(Code::cast(code), &masm); |
| 794 | // Log the event and add the code to the builtins array. |
| 795 | LOG(CodeCreateEvent(Logger::BUILTIN_TAG, |
| 796 | Code::cast(code), functions[i].s_name)); |
| 797 | builtins_[i] = code; |
| 798 | #ifdef ENABLE_DISASSEMBLER |
| 799 | if (FLAG_print_builtin_code) { |
| 800 | PrintF("Builtin: %s\n", functions[i].s_name); |
| 801 | Code::cast(code)->Disassemble(functions[i].s_name); |
| 802 | PrintF("\n"); |
| 803 | } |
| 804 | #endif |
| 805 | } else { |
| 806 | // Deserializing. The values will be filled in during IterateBuiltins. |
| 807 | builtins_[i] = NULL; |
| 808 | } |
| 809 | names_[i] = functions[i].s_name; |
| 810 | } |
| 811 | |
| 812 | // Mark as initialized. |
| 813 | is_initialized = true; |
| 814 | } |
| 815 | |
| 816 | |
| 817 | void Builtins::TearDown() { |
| 818 | is_initialized = false; |
| 819 | } |
| 820 | |
| 821 | |
| 822 | void Builtins::IterateBuiltins(ObjectVisitor* v) { |
| 823 | v->VisitPointers(&builtins_[0], &builtins_[0] + builtin_count); |
| 824 | } |
| 825 | |
| 826 | |
| 827 | const char* Builtins::Lookup(byte* pc) { |
| 828 | if (is_initialized) { // may be called during initialization (disassembler!) |
| 829 | for (int i = 0; i < builtin_count; i++) { |
| 830 | Code* entry = Code::cast(builtins_[i]); |
| 831 | if (entry->contains(pc)) { |
| 832 | return names_[i]; |
| 833 | } |
| 834 | } |
| 835 | } |
| 836 | return NULL; |
| 837 | } |
| 838 | |
| 839 | |
| 840 | } } // namespace v8::internal |