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 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 39 | namespace { |
| 40 | |
| 41 | // Arguments object passed to C++ builtins. |
| 42 | template <BuiltinExtraArguments extra_args> |
| 43 | class BuiltinArguments : public Arguments { |
| 44 | public: |
| 45 | BuiltinArguments(int length, Object** arguments) |
| 46 | : Arguments(length, arguments) { } |
| 47 | |
| 48 | Object*& operator[] (int index) { |
| 49 | ASSERT(index < length()); |
| 50 | return Arguments::operator[](index); |
| 51 | } |
| 52 | |
| 53 | template <class S> Handle<S> at(int index) { |
| 54 | ASSERT(index < length()); |
| 55 | return Arguments::at<S>(index); |
| 56 | } |
| 57 | |
| 58 | Handle<Object> receiver() { |
| 59 | return Arguments::at<Object>(0); |
| 60 | } |
| 61 | |
| 62 | Handle<JSFunction> called_function() { |
| 63 | STATIC_ASSERT(extra_args == NEEDS_CALLED_FUNCTION); |
| 64 | return Arguments::at<JSFunction>(Arguments::length() - 1); |
| 65 | } |
| 66 | |
| 67 | // Gets the total number of arguments including the receiver (but |
| 68 | // excluding extra arguments). |
| 69 | int length() const { |
| 70 | STATIC_ASSERT(extra_args == NO_EXTRA_ARGUMENTS); |
| 71 | return Arguments::length(); |
| 72 | } |
| 73 | |
| 74 | #ifdef DEBUG |
| 75 | void Verify() { |
| 76 | // Check we have at least the receiver. |
| 77 | ASSERT(Arguments::length() >= 1); |
| 78 | } |
| 79 | #endif |
| 80 | }; |
| 81 | |
| 82 | |
| 83 | // Specialize BuiltinArguments for the called function extra argument. |
| 84 | |
| 85 | template <> |
| 86 | int BuiltinArguments<NEEDS_CALLED_FUNCTION>::length() const { |
| 87 | return Arguments::length() - 1; |
| 88 | } |
| 89 | |
| 90 | #ifdef DEBUG |
| 91 | template <> |
| 92 | void BuiltinArguments<NEEDS_CALLED_FUNCTION>::Verify() { |
| 93 | // Check we have at least the receiver and the called function. |
| 94 | ASSERT(Arguments::length() >= 2); |
| 95 | // Make sure cast to JSFunction succeeds. |
| 96 | called_function(); |
| 97 | } |
| 98 | #endif |
| 99 | |
| 100 | |
| 101 | #define DEF_ARG_TYPE(name, spec) \ |
| 102 | typedef BuiltinArguments<spec> name##ArgumentsType; |
| 103 | BUILTIN_LIST_C(DEF_ARG_TYPE) |
| 104 | #undef DEF_ARG_TYPE |
| 105 | |
| 106 | } // namespace |
| 107 | |
| 108 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 109 | // ---------------------------------------------------------------------------- |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 110 | // Support macro for defining builtins in C++. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 111 | // ---------------------------------------------------------------------------- |
| 112 | // |
| 113 | // A builtin function is defined by writing: |
| 114 | // |
| 115 | // BUILTIN(name) { |
| 116 | // ... |
| 117 | // } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 118 | // |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 119 | // In the body of the builtin function the arguments can be accessed |
| 120 | // through the BuiltinArguments object args. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 121 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 122 | #ifdef DEBUG |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 123 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 124 | #define BUILTIN(name) \ |
| 125 | static Object* Builtin_Impl_##name(name##ArgumentsType args); \ |
| 126 | static Object* Builtin_##name(name##ArgumentsType args) { \ |
| 127 | args.Verify(); \ |
| 128 | return Builtin_Impl_##name(args); \ |
| 129 | } \ |
| 130 | static Object* Builtin_Impl_##name(name##ArgumentsType args) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 131 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 132 | #else // For release mode. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 133 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 134 | #define BUILTIN(name) \ |
| 135 | static Object* Builtin_##name(name##ArgumentsType args) |
| 136 | |
| 137 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 138 | |
| 139 | |
| 140 | static inline bool CalledAsConstructor() { |
| 141 | #ifdef DEBUG |
| 142 | // Calculate the result using a full stack frame iterator and check |
| 143 | // that the state of the stack is as we assume it to be in the |
| 144 | // code below. |
| 145 | StackFrameIterator it; |
| 146 | ASSERT(it.frame()->is_exit()); |
| 147 | it.Advance(); |
| 148 | StackFrame* frame = it.frame(); |
| 149 | bool reference_result = frame->is_construct(); |
| 150 | #endif |
| 151 | Address fp = Top::c_entry_fp(Top::GetCurrentThread()); |
| 152 | // Because we know fp points to an exit frame we can use the relevant |
| 153 | // part of ExitFrame::ComputeCallerState directly. |
| 154 | const int kCallerOffset = ExitFrameConstants::kCallerFPOffset; |
| 155 | Address caller_fp = Memory::Address_at(fp + kCallerOffset); |
| 156 | // This inlines the part of StackFrame::ComputeType that grabs the |
| 157 | // type of the current frame. Note that StackFrame::ComputeType |
| 158 | // has been specialized for each architecture so if any one of them |
| 159 | // changes this code has to be changed as well. |
| 160 | const int kMarkerOffset = StandardFrameConstants::kMarkerOffset; |
| 161 | const Smi* kConstructMarker = Smi::FromInt(StackFrame::CONSTRUCT); |
| 162 | Object* marker = Memory::Object_at(caller_fp + kMarkerOffset); |
| 163 | bool result = (marker == kConstructMarker); |
| 164 | ASSERT_EQ(result, reference_result); |
| 165 | return result; |
| 166 | } |
| 167 | |
| 168 | // ---------------------------------------------------------------------------- |
| 169 | |
| 170 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 171 | BUILTIN(Illegal) { |
| 172 | UNREACHABLE(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 173 | return Heap::undefined_value(); // Make compiler happy. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 174 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 175 | |
| 176 | |
| 177 | BUILTIN(EmptyFunction) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 178 | return Heap::undefined_value(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 179 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 180 | |
| 181 | |
| 182 | BUILTIN(ArrayCodeGeneric) { |
| 183 | Counters::array_function_runtime.Increment(); |
| 184 | |
| 185 | JSArray* array; |
| 186 | if (CalledAsConstructor()) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 187 | array = JSArray::cast(*args.receiver()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 188 | } else { |
| 189 | // Allocate the JS Array |
| 190 | JSFunction* constructor = |
| 191 | Top::context()->global_context()->array_function(); |
| 192 | Object* obj = Heap::AllocateJSObject(constructor); |
| 193 | if (obj->IsFailure()) return obj; |
| 194 | array = JSArray::cast(obj); |
| 195 | } |
| 196 | |
| 197 | // 'array' now contains the JSArray we should initialize. |
| 198 | |
| 199 | // Optimize the case where there is one argument and the argument is a |
| 200 | // small smi. |
| 201 | if (args.length() == 2) { |
| 202 | Object* obj = args[1]; |
| 203 | if (obj->IsSmi()) { |
| 204 | int len = Smi::cast(obj)->value(); |
| 205 | if (len >= 0 && len < JSObject::kInitialMaxFastElementArray) { |
| 206 | Object* obj = Heap::AllocateFixedArrayWithHoles(len); |
| 207 | if (obj->IsFailure()) return obj; |
| 208 | array->SetContent(FixedArray::cast(obj)); |
| 209 | return array; |
| 210 | } |
| 211 | } |
| 212 | // Take the argument as the length. |
| 213 | obj = array->Initialize(0); |
| 214 | if (obj->IsFailure()) return obj; |
| 215 | return array->SetElementsLength(args[1]); |
| 216 | } |
| 217 | |
| 218 | // Optimize the case where there are no parameters passed. |
| 219 | if (args.length() == 1) { |
| 220 | return array->Initialize(JSArray::kPreallocatedArrayElements); |
| 221 | } |
| 222 | |
| 223 | // Take the arguments as elements. |
| 224 | int number_of_elements = args.length() - 1; |
| 225 | Smi* len = Smi::FromInt(number_of_elements); |
| 226 | Object* obj = Heap::AllocateFixedArrayWithHoles(len->value()); |
| 227 | if (obj->IsFailure()) return obj; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 228 | |
| 229 | AssertNoAllocation no_gc; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 230 | FixedArray* elms = FixedArray::cast(obj); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 231 | WriteBarrierMode mode = elms->GetWriteBarrierMode(no_gc); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 232 | // Fill in the content |
| 233 | for (int index = 0; index < number_of_elements; index++) { |
| 234 | elms->set(index, args[index+1], mode); |
| 235 | } |
| 236 | |
| 237 | // Set length and elements on the array. |
| 238 | array->set_elements(FixedArray::cast(obj)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 239 | array->set_length(len); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 240 | |
| 241 | return array; |
| 242 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 243 | |
| 244 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 245 | static Object* AllocateJSArray() { |
| 246 | JSFunction* array_function = |
| 247 | Top::context()->global_context()->array_function(); |
| 248 | Object* result = Heap::AllocateJSObject(array_function); |
| 249 | if (result->IsFailure()) return result; |
| 250 | return result; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | static Object* AllocateEmptyJSArray() { |
| 255 | Object* result = AllocateJSArray(); |
| 256 | if (result->IsFailure()) return result; |
| 257 | JSArray* result_array = JSArray::cast(result); |
| 258 | result_array->set_length(Smi::FromInt(0)); |
| 259 | result_array->set_elements(Heap::empty_fixed_array()); |
| 260 | return result_array; |
| 261 | } |
| 262 | |
| 263 | |
| 264 | static void CopyElements(AssertNoAllocation* no_gc, |
| 265 | FixedArray* dst, |
| 266 | int dst_index, |
| 267 | FixedArray* src, |
| 268 | int src_index, |
| 269 | int len) { |
| 270 | ASSERT(dst != src); // Use MoveElements instead. |
| 271 | ASSERT(len > 0); |
| 272 | CopyWords(dst->data_start() + dst_index, |
| 273 | src->data_start() + src_index, |
| 274 | len); |
| 275 | WriteBarrierMode mode = dst->GetWriteBarrierMode(*no_gc); |
| 276 | if (mode == UPDATE_WRITE_BARRIER) { |
| 277 | Heap::RecordWrites(dst->address(), dst->OffsetOfElementAt(dst_index), len); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | |
| 282 | static void MoveElements(AssertNoAllocation* no_gc, |
| 283 | FixedArray* dst, |
| 284 | int dst_index, |
| 285 | FixedArray* src, |
| 286 | int src_index, |
| 287 | int len) { |
| 288 | memmove(dst->data_start() + dst_index, |
| 289 | src->data_start() + src_index, |
| 290 | len * kPointerSize); |
| 291 | WriteBarrierMode mode = dst->GetWriteBarrierMode(*no_gc); |
| 292 | if (mode == UPDATE_WRITE_BARRIER) { |
| 293 | Heap::RecordWrites(dst->address(), dst->OffsetOfElementAt(dst_index), len); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | |
| 298 | static void FillWithHoles(FixedArray* dst, int from, int to) { |
| 299 | MemsetPointer(dst->data_start() + from, Heap::the_hole_value(), to - from); |
| 300 | } |
| 301 | |
| 302 | |
| 303 | static FixedArray* LeftTrimFixedArray(FixedArray* elms, int to_trim) { |
| 304 | // For now this trick is only applied to fixed arrays in new space. |
| 305 | // In large object space the object's start must coincide with chunk |
| 306 | // and thus the trick is just not applicable. |
| 307 | // In old space we do not use this trick to avoid dealing with |
| 308 | // remembered sets. |
| 309 | ASSERT(Heap::new_space()->Contains(elms)); |
| 310 | |
| 311 | STATIC_ASSERT(FixedArray::kMapOffset == 0); |
| 312 | STATIC_ASSERT(FixedArray::kLengthOffset == kPointerSize); |
| 313 | STATIC_ASSERT(FixedArray::kHeaderSize == 2 * kPointerSize); |
| 314 | |
| 315 | Object** former_start = HeapObject::RawField(elms, 0); |
| 316 | |
| 317 | const int len = elms->length(); |
| 318 | |
| 319 | // Technically in new space this write might be omitted (except for |
| 320 | // debug mode which iterates through the heap), but to play safer |
| 321 | // we still do it. |
| 322 | Heap::CreateFillerObjectAt(elms->address(), to_trim * kPointerSize); |
| 323 | |
| 324 | former_start[to_trim] = Heap::fixed_array_map(); |
| 325 | former_start[to_trim + 1] = reinterpret_cast<Object*>(len - to_trim); |
| 326 | |
| 327 | ASSERT_EQ(elms->address() + to_trim * kPointerSize, |
| 328 | (elms + to_trim * kPointerSize)->address()); |
| 329 | return elms + to_trim * kPointerSize; |
| 330 | } |
| 331 | |
| 332 | |
| 333 | static bool ArrayPrototypeHasNoElements() { |
| 334 | // This method depends on non writability of Object and Array prototype |
| 335 | // fields. |
| 336 | Context* global_context = Top::context()->global_context(); |
| 337 | // Array.prototype |
| 338 | JSObject* proto = |
| 339 | JSObject::cast(global_context->array_function()->prototype()); |
| 340 | if (proto->elements() != Heap::empty_fixed_array()) return false; |
| 341 | // Hidden prototype |
| 342 | proto = JSObject::cast(proto->GetPrototype()); |
| 343 | ASSERT(proto->elements() == Heap::empty_fixed_array()); |
| 344 | // Object.prototype |
| 345 | proto = JSObject::cast(proto->GetPrototype()); |
| 346 | if (proto != global_context->initial_object_prototype()) return false; |
| 347 | if (proto->elements() != Heap::empty_fixed_array()) return false; |
| 348 | ASSERT(proto->GetPrototype()->IsNull()); |
| 349 | return true; |
| 350 | } |
| 351 | |
| 352 | |
| 353 | static bool IsJSArrayWithFastElements(Object* receiver, |
| 354 | FixedArray** elements) { |
| 355 | if (!receiver->IsJSArray()) { |
| 356 | return false; |
| 357 | } |
| 358 | |
| 359 | JSArray* array = JSArray::cast(receiver); |
| 360 | |
| 361 | HeapObject* elms = HeapObject::cast(array->elements()); |
| 362 | if (elms->map() != Heap::fixed_array_map()) { |
| 363 | return false; |
| 364 | } |
| 365 | |
| 366 | *elements = FixedArray::cast(elms); |
| 367 | return true; |
| 368 | } |
| 369 | |
| 370 | |
| 371 | static Object* CallJsBuiltin(const char* name, |
| 372 | BuiltinArguments<NO_EXTRA_ARGUMENTS> args) { |
| 373 | HandleScope handleScope; |
| 374 | |
| 375 | Handle<Object> js_builtin = |
| 376 | GetProperty(Handle<JSObject>(Top::global_context()->builtins()), |
| 377 | name); |
| 378 | ASSERT(js_builtin->IsJSFunction()); |
| 379 | Handle<JSFunction> function(Handle<JSFunction>::cast(js_builtin)); |
| 380 | Vector<Object**> argv(Vector<Object**>::New(args.length() - 1)); |
| 381 | int n_args = args.length() - 1; |
| 382 | for (int i = 0; i < n_args; i++) { |
| 383 | argv[i] = args.at<Object>(i + 1).location(); |
| 384 | } |
| 385 | bool pending_exception = false; |
| 386 | Handle<Object> result = Execution::Call(function, |
| 387 | args.receiver(), |
| 388 | n_args, |
| 389 | argv.start(), |
| 390 | &pending_exception); |
| 391 | argv.Dispose(); |
| 392 | if (pending_exception) return Failure::Exception(); |
| 393 | return *result; |
| 394 | } |
| 395 | |
| 396 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 397 | BUILTIN(ArrayPush) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 398 | Object* receiver = *args.receiver(); |
| 399 | FixedArray* elms = NULL; |
| 400 | if (!IsJSArrayWithFastElements(receiver, &elms)) { |
| 401 | return CallJsBuiltin("ArrayPush", args); |
| 402 | } |
| 403 | JSArray* array = JSArray::cast(receiver); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 404 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 405 | int len = Smi::cast(array->length())->value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 406 | int to_add = args.length() - 1; |
| 407 | if (to_add == 0) { |
| 408 | return Smi::FromInt(len); |
| 409 | } |
| 410 | // Currently fixed arrays cannot grow too big, so |
| 411 | // we should never hit this case. |
| 412 | ASSERT(to_add <= (Smi::kMaxValue - len)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 413 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 414 | int new_length = len + to_add; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 415 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 416 | if (new_length > elms->length()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 417 | // New backing storage is needed. |
| 418 | int capacity = new_length + (new_length >> 1) + 16; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 419 | Object* obj = Heap::AllocateUninitializedFixedArray(capacity); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 420 | if (obj->IsFailure()) return obj; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 421 | FixedArray* new_elms = FixedArray::cast(obj); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 422 | |
| 423 | AssertNoAllocation no_gc; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 424 | if (len > 0) { |
| 425 | CopyElements(&no_gc, new_elms, 0, elms, 0, len); |
| 426 | } |
| 427 | FillWithHoles(new_elms, new_length, capacity); |
| 428 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 429 | elms = new_elms; |
| 430 | array->set_elements(elms); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 431 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 432 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 433 | // Add the provided values. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 434 | AssertNoAllocation no_gc; |
| 435 | WriteBarrierMode mode = elms->GetWriteBarrierMode(no_gc); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 436 | for (int index = 0; index < to_add; index++) { |
| 437 | elms->set(index + len, args[index + 1], mode); |
| 438 | } |
| 439 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 440 | // Set the length. |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 441 | array->set_length(Smi::FromInt(new_length)); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 442 | return Smi::FromInt(new_length); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 443 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 444 | |
| 445 | |
| 446 | BUILTIN(ArrayPop) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 447 | Object* receiver = *args.receiver(); |
| 448 | FixedArray* elms = NULL; |
| 449 | if (!IsJSArrayWithFastElements(receiver, &elms)) { |
| 450 | return CallJsBuiltin("ArrayPop", args); |
| 451 | } |
| 452 | JSArray* array = JSArray::cast(receiver); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 453 | |
| 454 | int len = Smi::cast(array->length())->value(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 455 | if (len == 0) return Heap::undefined_value(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 456 | |
| 457 | // Get top element |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 458 | Object* top = elms->get(len - 1); |
| 459 | |
| 460 | // Set the length. |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 461 | array->set_length(Smi::FromInt(len - 1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 462 | |
| 463 | if (!top->IsTheHole()) { |
| 464 | // Delete the top element. |
| 465 | elms->set_the_hole(len - 1); |
| 466 | return top; |
| 467 | } |
| 468 | |
| 469 | // Remember to check the prototype chain. |
| 470 | JSFunction* array_function = |
| 471 | Top::context()->global_context()->array_function(); |
| 472 | JSObject* prototype = JSObject::cast(array_function->prototype()); |
| 473 | top = prototype->GetElement(len - 1); |
| 474 | |
| 475 | return top; |
| 476 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 477 | |
| 478 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 479 | BUILTIN(ArrayShift) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 480 | Object* receiver = *args.receiver(); |
| 481 | FixedArray* elms = NULL; |
| 482 | if (!IsJSArrayWithFastElements(receiver, &elms) |
| 483 | || !ArrayPrototypeHasNoElements()) { |
| 484 | return CallJsBuiltin("ArrayShift", args); |
| 485 | } |
| 486 | JSArray* array = JSArray::cast(receiver); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 487 | ASSERT(array->HasFastElements()); |
| 488 | |
| 489 | int len = Smi::cast(array->length())->value(); |
| 490 | if (len == 0) return Heap::undefined_value(); |
| 491 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 492 | // Get first element |
| 493 | Object* first = elms->get(0); |
| 494 | if (first->IsTheHole()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 495 | first = Heap::undefined_value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 496 | } |
| 497 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 498 | if (Heap::new_space()->Contains(elms)) { |
| 499 | // As elms still in the same space they used to be (new space), |
| 500 | // there is no need to update remembered set. |
| 501 | array->set_elements(LeftTrimFixedArray(elms, 1), SKIP_WRITE_BARRIER); |
| 502 | } else { |
| 503 | // Shift the elements. |
| 504 | AssertNoAllocation no_gc; |
| 505 | MoveElements(&no_gc, elms, 0, elms, 1, len - 1); |
| 506 | elms->set(len - 1, Heap::the_hole_value()); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 507 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 508 | |
| 509 | // Set the length. |
| 510 | array->set_length(Smi::FromInt(len - 1)); |
| 511 | |
| 512 | return first; |
| 513 | } |
| 514 | |
| 515 | |
| 516 | BUILTIN(ArrayUnshift) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 517 | Object* receiver = *args.receiver(); |
| 518 | FixedArray* elms = NULL; |
| 519 | if (!IsJSArrayWithFastElements(receiver, &elms) |
| 520 | || !ArrayPrototypeHasNoElements()) { |
| 521 | return CallJsBuiltin("ArrayUnshift", args); |
| 522 | } |
| 523 | JSArray* array = JSArray::cast(receiver); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 524 | ASSERT(array->HasFastElements()); |
| 525 | |
| 526 | int len = Smi::cast(array->length())->value(); |
| 527 | int to_add = args.length() - 1; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 528 | int new_length = len + to_add; |
| 529 | // Currently fixed arrays cannot grow too big, so |
| 530 | // we should never hit this case. |
| 531 | ASSERT(to_add <= (Smi::kMaxValue - len)); |
| 532 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 533 | if (new_length > elms->length()) { |
| 534 | // New backing storage is needed. |
| 535 | int capacity = new_length + (new_length >> 1) + 16; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 536 | Object* obj = Heap::AllocateUninitializedFixedArray(capacity); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 537 | if (obj->IsFailure()) return obj; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 538 | FixedArray* new_elms = FixedArray::cast(obj); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 539 | |
| 540 | AssertNoAllocation no_gc; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 541 | if (len > 0) { |
| 542 | CopyElements(&no_gc, new_elms, to_add, elms, 0, len); |
| 543 | } |
| 544 | FillWithHoles(new_elms, new_length, capacity); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 545 | |
| 546 | elms = new_elms; |
| 547 | array->set_elements(elms); |
| 548 | } else { |
| 549 | AssertNoAllocation no_gc; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 550 | MoveElements(&no_gc, elms, to_add, elms, 0, len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | // Add the provided values. |
| 554 | AssertNoAllocation no_gc; |
| 555 | WriteBarrierMode mode = elms->GetWriteBarrierMode(no_gc); |
| 556 | for (int i = 0; i < to_add; i++) { |
| 557 | elms->set(i, args[i + 1], mode); |
| 558 | } |
| 559 | |
| 560 | // Set the length. |
| 561 | array->set_length(Smi::FromInt(new_length)); |
| 562 | return Smi::FromInt(new_length); |
| 563 | } |
| 564 | |
| 565 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 566 | BUILTIN(ArraySlice) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 567 | Object* receiver = *args.receiver(); |
| 568 | FixedArray* elms = NULL; |
| 569 | if (!IsJSArrayWithFastElements(receiver, &elms) |
| 570 | || !ArrayPrototypeHasNoElements()) { |
| 571 | return CallJsBuiltin("ArraySlice", args); |
| 572 | } |
| 573 | JSArray* array = JSArray::cast(receiver); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 574 | ASSERT(array->HasFastElements()); |
| 575 | |
| 576 | int len = Smi::cast(array->length())->value(); |
| 577 | |
| 578 | int n_arguments = args.length() - 1; |
| 579 | |
| 580 | // Note carefully choosen defaults---if argument is missing, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 581 | // it's undefined which gets converted to 0 for relative_start |
| 582 | // and to len for relative_end. |
| 583 | int relative_start = 0; |
| 584 | int relative_end = len; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 585 | if (n_arguments > 0) { |
| 586 | Object* arg1 = args[1]; |
| 587 | if (arg1->IsSmi()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 588 | relative_start = Smi::cast(arg1)->value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 589 | } else if (!arg1->IsUndefined()) { |
| 590 | return CallJsBuiltin("ArraySlice", args); |
| 591 | } |
| 592 | if (n_arguments > 1) { |
| 593 | Object* arg2 = args[2]; |
| 594 | if (arg2->IsSmi()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 595 | relative_end = Smi::cast(arg2)->value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 596 | } else if (!arg2->IsUndefined()) { |
| 597 | return CallJsBuiltin("ArraySlice", args); |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | // ECMAScript 232, 3rd Edition, Section 15.4.4.10, step 6. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 603 | int k = (relative_start < 0) ? Max(len + relative_start, 0) |
| 604 | : Min(relative_start, len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 605 | |
| 606 | // ECMAScript 232, 3rd Edition, Section 15.4.4.10, step 8. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 607 | int final = (relative_end < 0) ? Max(len + relative_end, 0) |
| 608 | : Min(relative_end, len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 609 | |
| 610 | // Calculate the length of result array. |
| 611 | int result_len = final - k; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 612 | if (result_len <= 0) { |
| 613 | return AllocateEmptyJSArray(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 614 | } |
| 615 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 616 | Object* result = AllocateJSArray(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 617 | if (result->IsFailure()) return result; |
| 618 | JSArray* result_array = JSArray::cast(result); |
| 619 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 620 | result = Heap::AllocateUninitializedFixedArray(result_len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 621 | if (result->IsFailure()) return result; |
| 622 | FixedArray* result_elms = FixedArray::cast(result); |
| 623 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 624 | AssertNoAllocation no_gc; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 625 | CopyElements(&no_gc, result_elms, 0, elms, k, result_len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 626 | |
| 627 | // Set elements. |
| 628 | result_array->set_elements(result_elms); |
| 629 | |
| 630 | // Set the length. |
| 631 | result_array->set_length(Smi::FromInt(result_len)); |
| 632 | return result_array; |
| 633 | } |
| 634 | |
| 635 | |
| 636 | BUILTIN(ArraySplice) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 637 | Object* receiver = *args.receiver(); |
| 638 | FixedArray* elms = NULL; |
| 639 | if (!IsJSArrayWithFastElements(receiver, &elms) |
| 640 | || !ArrayPrototypeHasNoElements()) { |
| 641 | return CallJsBuiltin("ArraySplice", args); |
| 642 | } |
| 643 | JSArray* array = JSArray::cast(receiver); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 644 | ASSERT(array->HasFastElements()); |
| 645 | |
| 646 | int len = Smi::cast(array->length())->value(); |
| 647 | |
| 648 | int n_arguments = args.length() - 1; |
| 649 | |
| 650 | // SpiderMonkey and JSC return undefined in the case where no |
| 651 | // arguments are given instead of using the implicit undefined |
| 652 | // arguments. This does not follow ECMA-262, but we do the same for |
| 653 | // compatibility. |
| 654 | // TraceMonkey follows ECMA-262 though. |
| 655 | if (n_arguments == 0) { |
| 656 | return Heap::undefined_value(); |
| 657 | } |
| 658 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 659 | int relative_start = 0; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 660 | Object* arg1 = args[1]; |
| 661 | if (arg1->IsSmi()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 662 | relative_start = Smi::cast(arg1)->value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 663 | } else if (!arg1->IsUndefined()) { |
| 664 | return CallJsBuiltin("ArraySplice", args); |
| 665 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 666 | int actual_start = (relative_start < 0) ? Max(len + relative_start, 0) |
| 667 | : Min(relative_start, len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 668 | |
| 669 | // SpiderMonkey, TraceMonkey and JSC treat the case where no delete count is |
| 670 | // given differently from when an undefined delete count is given. |
| 671 | // This does not follow ECMA-262, but we do the same for |
| 672 | // compatibility. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 673 | int delete_count = len; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 674 | if (n_arguments > 1) { |
| 675 | Object* arg2 = args[2]; |
| 676 | if (arg2->IsSmi()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 677 | delete_count = Smi::cast(arg2)->value(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 678 | } else { |
| 679 | return CallJsBuiltin("ArraySplice", args); |
| 680 | } |
| 681 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 682 | int actual_delete_count = Min(Max(delete_count, 0), len - actual_start); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 683 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 684 | JSArray* result_array = NULL; |
| 685 | if (actual_delete_count == 0) { |
| 686 | Object* result = AllocateEmptyJSArray(); |
| 687 | if (result->IsFailure()) return result; |
| 688 | result_array = JSArray::cast(result); |
| 689 | } else { |
| 690 | // Allocate result array. |
| 691 | Object* result = AllocateJSArray(); |
| 692 | if (result->IsFailure()) return result; |
| 693 | result_array = JSArray::cast(result); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 694 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 695 | result = Heap::AllocateUninitializedFixedArray(actual_delete_count); |
| 696 | if (result->IsFailure()) return result; |
| 697 | FixedArray* result_elms = FixedArray::cast(result); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 698 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 699 | AssertNoAllocation no_gc; |
| 700 | // Fill newly created array. |
| 701 | CopyElements(&no_gc, |
| 702 | result_elms, 0, |
| 703 | elms, actual_start, |
| 704 | actual_delete_count); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 705 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 706 | // Set elements. |
| 707 | result_array->set_elements(result_elms); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 708 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 709 | // Set the length. |
| 710 | result_array->set_length(Smi::FromInt(actual_delete_count)); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 711 | } |
| 712 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 713 | int item_count = (n_arguments > 1) ? (n_arguments - 2) : 0; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 714 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 715 | int new_length = len - actual_delete_count + item_count; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 716 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 717 | if (item_count < actual_delete_count) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 718 | // Shrink the array. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 719 | const bool trim_array = Heap::new_space()->Contains(elms) && |
| 720 | ((actual_start + item_count) < |
| 721 | (len - actual_delete_count - actual_start)); |
| 722 | if (trim_array) { |
| 723 | const int delta = actual_delete_count - item_count; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 724 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 725 | if (actual_start > 0) { |
| 726 | Object** start = elms->data_start(); |
| 727 | memmove(start + delta, start, actual_start * kPointerSize); |
| 728 | } |
| 729 | |
| 730 | elms = LeftTrimFixedArray(elms, delta); |
| 731 | array->set_elements(elms, SKIP_WRITE_BARRIER); |
| 732 | } else { |
| 733 | AssertNoAllocation no_gc; |
| 734 | MoveElements(&no_gc, |
| 735 | elms, actual_start + item_count, |
| 736 | elms, actual_start + actual_delete_count, |
| 737 | (len - actual_delete_count - actual_start)); |
| 738 | FillWithHoles(elms, new_length, len); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 739 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 740 | } else if (item_count > actual_delete_count) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 741 | // Currently fixed arrays cannot grow too big, so |
| 742 | // we should never hit this case. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 743 | ASSERT((item_count - actual_delete_count) <= (Smi::kMaxValue - len)); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 744 | |
| 745 | // Check if array need to grow. |
| 746 | if (new_length > elms->length()) { |
| 747 | // New backing storage is needed. |
| 748 | int capacity = new_length + (new_length >> 1) + 16; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 749 | Object* obj = Heap::AllocateUninitializedFixedArray(capacity); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 750 | if (obj->IsFailure()) return obj; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 751 | FixedArray* new_elms = FixedArray::cast(obj); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 752 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 753 | AssertNoAllocation no_gc; |
| 754 | // Copy the part before actual_start as is. |
| 755 | if (actual_start > 0) { |
| 756 | CopyElements(&no_gc, new_elms, 0, elms, 0, actual_start); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 757 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 758 | const int to_copy = len - actual_delete_count - actual_start; |
| 759 | if (to_copy > 0) { |
| 760 | CopyElements(&no_gc, |
| 761 | new_elms, actual_start + item_count, |
| 762 | elms, actual_start + actual_delete_count, |
| 763 | to_copy); |
| 764 | } |
| 765 | FillWithHoles(new_elms, new_length, capacity); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 766 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 767 | elms = new_elms; |
| 768 | array->set_elements(elms); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 769 | } else { |
| 770 | AssertNoAllocation no_gc; |
| 771 | MoveElements(&no_gc, |
| 772 | elms, actual_start + item_count, |
| 773 | elms, actual_start + actual_delete_count, |
| 774 | (len - actual_delete_count - actual_start)); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 775 | } |
| 776 | } |
| 777 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 778 | AssertNoAllocation no_gc; |
| 779 | WriteBarrierMode mode = elms->GetWriteBarrierMode(no_gc); |
| 780 | for (int k = actual_start; k < actual_start + item_count; k++) { |
| 781 | elms->set(k, args[3 + k - actual_start], mode); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | // Set the length. |
| 785 | array->set_length(Smi::FromInt(new_length)); |
| 786 | |
| 787 | return result_array; |
| 788 | } |
| 789 | |
| 790 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 791 | BUILTIN(ArrayConcat) { |
| 792 | if (!ArrayPrototypeHasNoElements()) { |
| 793 | return CallJsBuiltin("ArrayConcat", args); |
| 794 | } |
| 795 | |
| 796 | // Iterate through all the arguments performing checks |
| 797 | // and calculating total length. |
| 798 | int n_arguments = args.length(); |
| 799 | int result_len = 0; |
| 800 | for (int i = 0; i < n_arguments; i++) { |
| 801 | Object* arg = args[i]; |
| 802 | if (!arg->IsJSArray() || !JSArray::cast(arg)->HasFastElements()) { |
| 803 | return CallJsBuiltin("ArrayConcat", args); |
| 804 | } |
| 805 | |
| 806 | int len = Smi::cast(JSArray::cast(arg)->length())->value(); |
| 807 | |
| 808 | // We shouldn't overflow when adding another len. |
| 809 | const int kHalfOfMaxInt = 1 << (kBitsPerInt - 2); |
| 810 | STATIC_ASSERT(FixedArray::kMaxLength < kHalfOfMaxInt); |
| 811 | USE(kHalfOfMaxInt); |
| 812 | result_len += len; |
| 813 | ASSERT(result_len >= 0); |
| 814 | |
| 815 | if (result_len > FixedArray::kMaxLength) { |
| 816 | return CallJsBuiltin("ArrayConcat", args); |
| 817 | } |
| 818 | } |
| 819 | |
| 820 | if (result_len == 0) { |
| 821 | return AllocateEmptyJSArray(); |
| 822 | } |
| 823 | |
| 824 | // Allocate result. |
| 825 | Object* result = AllocateJSArray(); |
| 826 | if (result->IsFailure()) return result; |
| 827 | JSArray* result_array = JSArray::cast(result); |
| 828 | |
| 829 | result = Heap::AllocateUninitializedFixedArray(result_len); |
| 830 | if (result->IsFailure()) return result; |
| 831 | FixedArray* result_elms = FixedArray::cast(result); |
| 832 | |
| 833 | // Copy data. |
| 834 | AssertNoAllocation no_gc; |
| 835 | int start_pos = 0; |
| 836 | for (int i = 0; i < n_arguments; i++) { |
| 837 | JSArray* array = JSArray::cast(args[i]); |
| 838 | int len = Smi::cast(array->length())->value(); |
| 839 | if (len > 0) { |
| 840 | FixedArray* elms = FixedArray::cast(array->elements()); |
| 841 | CopyElements(&no_gc, result_elms, start_pos, elms, 0, len); |
| 842 | start_pos += len; |
| 843 | } |
| 844 | } |
| 845 | ASSERT(start_pos == result_len); |
| 846 | |
| 847 | // Set the length and elements. |
| 848 | result_array->set_length(Smi::FromInt(result_len)); |
| 849 | result_array->set_elements(result_elms); |
| 850 | |
| 851 | return result_array; |
| 852 | } |
| 853 | |
| 854 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 855 | // ----------------------------------------------------------------------------- |
| 856 | // |
| 857 | |
| 858 | |
| 859 | // Returns the holder JSObject if the function can legally be called |
| 860 | // with this receiver. Returns Heap::null_value() if the call is |
| 861 | // illegal. Any arguments that don't fit the expected type is |
| 862 | // overwritten with undefined. Arguments that do fit the expected |
| 863 | // type is overwritten with the object in the prototype chain that |
| 864 | // actually has that type. |
| 865 | static inline Object* TypeCheck(int argc, |
| 866 | Object** argv, |
| 867 | FunctionTemplateInfo* info) { |
| 868 | Object* recv = argv[0]; |
| 869 | Object* sig_obj = info->signature(); |
| 870 | if (sig_obj->IsUndefined()) return recv; |
| 871 | SignatureInfo* sig = SignatureInfo::cast(sig_obj); |
| 872 | // If necessary, check the receiver |
| 873 | Object* recv_type = sig->receiver(); |
| 874 | |
| 875 | Object* holder = recv; |
| 876 | if (!recv_type->IsUndefined()) { |
| 877 | for (; holder != Heap::null_value(); holder = holder->GetPrototype()) { |
| 878 | if (holder->IsInstanceOf(FunctionTemplateInfo::cast(recv_type))) { |
| 879 | break; |
| 880 | } |
| 881 | } |
| 882 | if (holder == Heap::null_value()) return holder; |
| 883 | } |
| 884 | Object* args_obj = sig->args(); |
| 885 | // If there is no argument signature we're done |
| 886 | if (args_obj->IsUndefined()) return holder; |
| 887 | FixedArray* args = FixedArray::cast(args_obj); |
| 888 | int length = args->length(); |
| 889 | if (argc <= length) length = argc - 1; |
| 890 | for (int i = 0; i < length; i++) { |
| 891 | Object* argtype = args->get(i); |
| 892 | if (argtype->IsUndefined()) continue; |
| 893 | Object** arg = &argv[-1 - i]; |
| 894 | Object* current = *arg; |
| 895 | for (; current != Heap::null_value(); current = current->GetPrototype()) { |
| 896 | if (current->IsInstanceOf(FunctionTemplateInfo::cast(argtype))) { |
| 897 | *arg = current; |
| 898 | break; |
| 899 | } |
| 900 | } |
| 901 | if (current == Heap::null_value()) *arg = Heap::undefined_value(); |
| 902 | } |
| 903 | return holder; |
| 904 | } |
| 905 | |
| 906 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 907 | template <bool is_construct> |
| 908 | static Object* HandleApiCallHelper( |
| 909 | BuiltinArguments<NEEDS_CALLED_FUNCTION> args) { |
| 910 | ASSERT(is_construct == CalledAsConstructor()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 911 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 912 | HandleScope scope; |
| 913 | Handle<JSFunction> function = args.called_function(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 914 | ASSERT(function->shared()->IsApiFunction()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 915 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 916 | FunctionTemplateInfo* fun_data = function->shared()->get_api_func_data(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 917 | if (is_construct) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 918 | Handle<FunctionTemplateInfo> desc(fun_data); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 919 | bool pending_exception = false; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 920 | Factory::ConfigureInstance(desc, Handle<JSObject>::cast(args.receiver()), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 921 | &pending_exception); |
| 922 | ASSERT(Top::has_pending_exception() == pending_exception); |
| 923 | if (pending_exception) return Failure::Exception(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 924 | fun_data = *desc; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 925 | } |
| 926 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 927 | Object* raw_holder = TypeCheck(args.length(), &args[0], fun_data); |
| 928 | |
| 929 | if (raw_holder->IsNull()) { |
| 930 | // This function cannot be called with the given receiver. Abort! |
| 931 | Handle<Object> obj = |
| 932 | Factory::NewTypeError("illegal_invocation", HandleVector(&function, 1)); |
| 933 | return Top::Throw(*obj); |
| 934 | } |
| 935 | |
| 936 | Object* raw_call_data = fun_data->call_code(); |
| 937 | if (!raw_call_data->IsUndefined()) { |
| 938 | CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data); |
| 939 | Object* callback_obj = call_data->callback(); |
| 940 | v8::InvocationCallback callback = |
| 941 | v8::ToCData<v8::InvocationCallback>(callback_obj); |
| 942 | Object* data_obj = call_data->data(); |
| 943 | Object* result; |
| 944 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 945 | Handle<Object> data_handle(data_obj); |
| 946 | v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| 947 | ASSERT(raw_holder->IsJSObject()); |
| 948 | v8::Local<v8::Function> callee = v8::Utils::ToLocal(function); |
| 949 | Handle<JSObject> holder_handle(JSObject::cast(raw_holder)); |
| 950 | v8::Local<v8::Object> holder = v8::Utils::ToLocal(holder_handle); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 951 | LOG(ApiObjectAccess("call", JSObject::cast(*args.receiver()))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 952 | v8::Arguments new_args = v8::ImplementationUtilities::NewArguments( |
| 953 | data, |
| 954 | holder, |
| 955 | callee, |
| 956 | is_construct, |
| 957 | reinterpret_cast<void**>(&args[0] - 1), |
| 958 | args.length() - 1); |
| 959 | |
| 960 | v8::Handle<v8::Value> value; |
| 961 | { |
| 962 | // Leaving JavaScript. |
| 963 | VMState state(EXTERNAL); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 964 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 965 | state.set_external_callback(v8::ToCData<Address>(callback_obj)); |
| 966 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 967 | value = callback(new_args); |
| 968 | } |
| 969 | if (value.IsEmpty()) { |
| 970 | result = Heap::undefined_value(); |
| 971 | } else { |
| 972 | result = *reinterpret_cast<Object**>(*value); |
| 973 | } |
| 974 | |
| 975 | RETURN_IF_SCHEDULED_EXCEPTION(); |
| 976 | if (!is_construct || result->IsJSObject()) return result; |
| 977 | } |
| 978 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 979 | return *args.receiver(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 980 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 981 | |
| 982 | |
| 983 | BUILTIN(HandleApiCall) { |
| 984 | return HandleApiCallHelper<false>(args); |
| 985 | } |
| 986 | |
| 987 | |
| 988 | BUILTIN(HandleApiCallConstruct) { |
| 989 | return HandleApiCallHelper<true>(args); |
| 990 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 991 | |
| 992 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 993 | #ifdef DEBUG |
| 994 | |
| 995 | static void VerifyTypeCheck(Handle<JSObject> object, |
| 996 | Handle<JSFunction> function) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 997 | ASSERT(function->shared()->IsApiFunction()); |
| 998 | FunctionTemplateInfo* info = function->shared()->get_api_func_data(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 999 | if (info->signature()->IsUndefined()) return; |
| 1000 | SignatureInfo* signature = SignatureInfo::cast(info->signature()); |
| 1001 | Object* receiver_type = signature->receiver(); |
| 1002 | if (receiver_type->IsUndefined()) return; |
| 1003 | FunctionTemplateInfo* type = FunctionTemplateInfo::cast(receiver_type); |
| 1004 | ASSERT(object->IsInstanceOf(type)); |
| 1005 | } |
| 1006 | |
| 1007 | #endif |
| 1008 | |
| 1009 | |
| 1010 | BUILTIN(FastHandleApiCall) { |
| 1011 | ASSERT(!CalledAsConstructor()); |
| 1012 | const bool is_construct = false; |
| 1013 | |
| 1014 | // We expect four more arguments: function, callback, call data, and holder. |
| 1015 | const int args_length = args.length() - 4; |
| 1016 | ASSERT(args_length >= 0); |
| 1017 | |
| 1018 | Handle<JSFunction> function = args.at<JSFunction>(args_length); |
| 1019 | Object* callback_obj = args[args_length + 1]; |
| 1020 | Handle<Object> data_handle = args.at<Object>(args_length + 2); |
| 1021 | Handle<JSObject> checked_holder = args.at<JSObject>(args_length + 3); |
| 1022 | |
| 1023 | #ifdef DEBUG |
| 1024 | VerifyTypeCheck(checked_holder, function); |
| 1025 | #endif |
| 1026 | |
| 1027 | v8::Local<v8::Object> holder = v8::Utils::ToLocal(checked_holder); |
| 1028 | v8::Local<v8::Function> callee = v8::Utils::ToLocal(function); |
| 1029 | v8::InvocationCallback callback = |
| 1030 | v8::ToCData<v8::InvocationCallback>(callback_obj); |
| 1031 | v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| 1032 | |
| 1033 | v8::Arguments new_args = v8::ImplementationUtilities::NewArguments( |
| 1034 | data, |
| 1035 | holder, |
| 1036 | callee, |
| 1037 | is_construct, |
| 1038 | reinterpret_cast<void**>(&args[0] - 1), |
| 1039 | args_length - 1); |
| 1040 | |
| 1041 | HandleScope scope; |
| 1042 | Object* result; |
| 1043 | v8::Handle<v8::Value> value; |
| 1044 | { |
| 1045 | // Leaving JavaScript. |
| 1046 | VMState state(EXTERNAL); |
| 1047 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1048 | state.set_external_callback(v8::ToCData<Address>(callback_obj)); |
| 1049 | #endif |
| 1050 | value = callback(new_args); |
| 1051 | } |
| 1052 | if (value.IsEmpty()) { |
| 1053 | result = Heap::undefined_value(); |
| 1054 | } else { |
| 1055 | result = *reinterpret_cast<Object**>(*value); |
| 1056 | } |
| 1057 | |
| 1058 | RETURN_IF_SCHEDULED_EXCEPTION(); |
| 1059 | return result; |
| 1060 | } |
| 1061 | |
| 1062 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1063 | // Helper function to handle calls to non-function objects created through the |
| 1064 | // API. The object can be called as either a constructor (using new) or just as |
| 1065 | // a function (without new). |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1066 | static Object* HandleApiCallAsFunctionOrConstructor( |
| 1067 | bool is_construct_call, |
| 1068 | BuiltinArguments<NO_EXTRA_ARGUMENTS> args) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1069 | // Non-functions are never called as constructors. Even if this is an object |
| 1070 | // called as a constructor the delegate call is not a construct call. |
| 1071 | ASSERT(!CalledAsConstructor()); |
| 1072 | |
| 1073 | Handle<Object> receiver = args.at<Object>(0); |
| 1074 | |
| 1075 | // Get the object called. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1076 | JSObject* obj = JSObject::cast(*args.receiver()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1077 | |
| 1078 | // Get the invocation callback from the function descriptor that was |
| 1079 | // used to create the called object. |
| 1080 | ASSERT(obj->map()->has_instance_call_handler()); |
| 1081 | JSFunction* constructor = JSFunction::cast(obj->map()->constructor()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1082 | ASSERT(constructor->shared()->IsApiFunction()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1083 | Object* handler = |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1084 | constructor->shared()->get_api_func_data()->instance_call_handler(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1085 | ASSERT(!handler->IsUndefined()); |
| 1086 | CallHandlerInfo* call_data = CallHandlerInfo::cast(handler); |
| 1087 | Object* callback_obj = call_data->callback(); |
| 1088 | v8::InvocationCallback callback = |
| 1089 | v8::ToCData<v8::InvocationCallback>(callback_obj); |
| 1090 | |
| 1091 | // Get the data for the call and perform the callback. |
| 1092 | Object* data_obj = call_data->data(); |
| 1093 | Object* result; |
| 1094 | { HandleScope scope; |
| 1095 | v8::Local<v8::Object> self = |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1096 | v8::Utils::ToLocal(Handle<JSObject>::cast(args.receiver())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1097 | Handle<Object> data_handle(data_obj); |
| 1098 | v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| 1099 | Handle<JSFunction> callee_handle(constructor); |
| 1100 | v8::Local<v8::Function> callee = v8::Utils::ToLocal(callee_handle); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1101 | LOG(ApiObjectAccess("call non-function", JSObject::cast(*args.receiver()))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1102 | v8::Arguments new_args = v8::ImplementationUtilities::NewArguments( |
| 1103 | data, |
| 1104 | self, |
| 1105 | callee, |
| 1106 | is_construct_call, |
| 1107 | reinterpret_cast<void**>(&args[0] - 1), |
| 1108 | args.length() - 1); |
| 1109 | v8::Handle<v8::Value> value; |
| 1110 | { |
| 1111 | // Leaving JavaScript. |
| 1112 | VMState state(EXTERNAL); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1113 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1114 | state.set_external_callback(v8::ToCData<Address>(callback_obj)); |
| 1115 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1116 | value = callback(new_args); |
| 1117 | } |
| 1118 | if (value.IsEmpty()) { |
| 1119 | result = Heap::undefined_value(); |
| 1120 | } else { |
| 1121 | result = *reinterpret_cast<Object**>(*value); |
| 1122 | } |
| 1123 | } |
| 1124 | // Check for exceptions and return result. |
| 1125 | RETURN_IF_SCHEDULED_EXCEPTION(); |
| 1126 | return result; |
| 1127 | } |
| 1128 | |
| 1129 | |
| 1130 | // Handle calls to non-function objects created through the API. This delegate |
| 1131 | // function is used when the call is a normal function call. |
| 1132 | BUILTIN(HandleApiCallAsFunction) { |
| 1133 | return HandleApiCallAsFunctionOrConstructor(false, args); |
| 1134 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1135 | |
| 1136 | |
| 1137 | // Handle calls to non-function objects created through the API. This delegate |
| 1138 | // function is used when the call is a construct call. |
| 1139 | BUILTIN(HandleApiCallAsConstructor) { |
| 1140 | return HandleApiCallAsFunctionOrConstructor(true, args); |
| 1141 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1142 | |
| 1143 | |
| 1144 | static void Generate_LoadIC_ArrayLength(MacroAssembler* masm) { |
| 1145 | LoadIC::GenerateArrayLength(masm); |
| 1146 | } |
| 1147 | |
| 1148 | |
| 1149 | static void Generate_LoadIC_StringLength(MacroAssembler* masm) { |
| 1150 | LoadIC::GenerateStringLength(masm); |
| 1151 | } |
| 1152 | |
| 1153 | |
| 1154 | static void Generate_LoadIC_FunctionPrototype(MacroAssembler* masm) { |
| 1155 | LoadIC::GenerateFunctionPrototype(masm); |
| 1156 | } |
| 1157 | |
| 1158 | |
| 1159 | static void Generate_LoadIC_Initialize(MacroAssembler* masm) { |
| 1160 | LoadIC::GenerateInitialize(masm); |
| 1161 | } |
| 1162 | |
| 1163 | |
| 1164 | static void Generate_LoadIC_PreMonomorphic(MacroAssembler* masm) { |
| 1165 | LoadIC::GeneratePreMonomorphic(masm); |
| 1166 | } |
| 1167 | |
| 1168 | |
| 1169 | static void Generate_LoadIC_Miss(MacroAssembler* masm) { |
| 1170 | LoadIC::GenerateMiss(masm); |
| 1171 | } |
| 1172 | |
| 1173 | |
| 1174 | static void Generate_LoadIC_Megamorphic(MacroAssembler* masm) { |
| 1175 | LoadIC::GenerateMegamorphic(masm); |
| 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | static void Generate_LoadIC_Normal(MacroAssembler* masm) { |
| 1180 | LoadIC::GenerateNormal(masm); |
| 1181 | } |
| 1182 | |
| 1183 | |
| 1184 | static void Generate_KeyedLoadIC_Initialize(MacroAssembler* masm) { |
| 1185 | KeyedLoadIC::GenerateInitialize(masm); |
| 1186 | } |
| 1187 | |
| 1188 | |
| 1189 | static void Generate_KeyedLoadIC_Miss(MacroAssembler* masm) { |
| 1190 | KeyedLoadIC::GenerateMiss(masm); |
| 1191 | } |
| 1192 | |
| 1193 | |
| 1194 | static void Generate_KeyedLoadIC_Generic(MacroAssembler* masm) { |
| 1195 | KeyedLoadIC::GenerateGeneric(masm); |
| 1196 | } |
| 1197 | |
| 1198 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1199 | static void Generate_KeyedLoadIC_String(MacroAssembler* masm) { |
| 1200 | KeyedLoadIC::GenerateString(masm); |
| 1201 | } |
| 1202 | |
| 1203 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1204 | static void Generate_KeyedLoadIC_ExternalByteArray(MacroAssembler* masm) { |
| 1205 | KeyedLoadIC::GenerateExternalArray(masm, kExternalByteArray); |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | static void Generate_KeyedLoadIC_ExternalUnsignedByteArray( |
| 1210 | MacroAssembler* masm) { |
| 1211 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedByteArray); |
| 1212 | } |
| 1213 | |
| 1214 | |
| 1215 | static void Generate_KeyedLoadIC_ExternalShortArray(MacroAssembler* masm) { |
| 1216 | KeyedLoadIC::GenerateExternalArray(masm, kExternalShortArray); |
| 1217 | } |
| 1218 | |
| 1219 | |
| 1220 | static void Generate_KeyedLoadIC_ExternalUnsignedShortArray( |
| 1221 | MacroAssembler* masm) { |
| 1222 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedShortArray); |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | static void Generate_KeyedLoadIC_ExternalIntArray(MacroAssembler* masm) { |
| 1227 | KeyedLoadIC::GenerateExternalArray(masm, kExternalIntArray); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | static void Generate_KeyedLoadIC_ExternalUnsignedIntArray( |
| 1232 | MacroAssembler* masm) { |
| 1233 | KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedIntArray); |
| 1234 | } |
| 1235 | |
| 1236 | |
| 1237 | static void Generate_KeyedLoadIC_ExternalFloatArray(MacroAssembler* masm) { |
| 1238 | KeyedLoadIC::GenerateExternalArray(masm, kExternalFloatArray); |
| 1239 | } |
| 1240 | |
| 1241 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1242 | static void Generate_KeyedLoadIC_PreMonomorphic(MacroAssembler* masm) { |
| 1243 | KeyedLoadIC::GeneratePreMonomorphic(masm); |
| 1244 | } |
| 1245 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1246 | static void Generate_KeyedLoadIC_IndexedInterceptor(MacroAssembler* masm) { |
| 1247 | KeyedLoadIC::GenerateIndexedInterceptor(masm); |
| 1248 | } |
| 1249 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1250 | |
| 1251 | static void Generate_StoreIC_Initialize(MacroAssembler* masm) { |
| 1252 | StoreIC::GenerateInitialize(masm); |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | static void Generate_StoreIC_Miss(MacroAssembler* masm) { |
| 1257 | StoreIC::GenerateMiss(masm); |
| 1258 | } |
| 1259 | |
| 1260 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1261 | static void Generate_StoreIC_Megamorphic(MacroAssembler* masm) { |
| 1262 | StoreIC::GenerateMegamorphic(masm); |
| 1263 | } |
| 1264 | |
| 1265 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1266 | static void Generate_StoreIC_ArrayLength(MacroAssembler* masm) { |
| 1267 | StoreIC::GenerateArrayLength(masm); |
| 1268 | } |
| 1269 | |
| 1270 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1271 | static void Generate_KeyedStoreIC_Generic(MacroAssembler* masm) { |
| 1272 | KeyedStoreIC::GenerateGeneric(masm); |
| 1273 | } |
| 1274 | |
| 1275 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1276 | static void Generate_KeyedStoreIC_ExternalByteArray(MacroAssembler* masm) { |
| 1277 | KeyedStoreIC::GenerateExternalArray(masm, kExternalByteArray); |
| 1278 | } |
| 1279 | |
| 1280 | |
| 1281 | static void Generate_KeyedStoreIC_ExternalUnsignedByteArray( |
| 1282 | MacroAssembler* masm) { |
| 1283 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedByteArray); |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | static void Generate_KeyedStoreIC_ExternalShortArray(MacroAssembler* masm) { |
| 1288 | KeyedStoreIC::GenerateExternalArray(masm, kExternalShortArray); |
| 1289 | } |
| 1290 | |
| 1291 | |
| 1292 | static void Generate_KeyedStoreIC_ExternalUnsignedShortArray( |
| 1293 | MacroAssembler* masm) { |
| 1294 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedShortArray); |
| 1295 | } |
| 1296 | |
| 1297 | |
| 1298 | static void Generate_KeyedStoreIC_ExternalIntArray(MacroAssembler* masm) { |
| 1299 | KeyedStoreIC::GenerateExternalArray(masm, kExternalIntArray); |
| 1300 | } |
| 1301 | |
| 1302 | |
| 1303 | static void Generate_KeyedStoreIC_ExternalUnsignedIntArray( |
| 1304 | MacroAssembler* masm) { |
| 1305 | KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedIntArray); |
| 1306 | } |
| 1307 | |
| 1308 | |
| 1309 | static void Generate_KeyedStoreIC_ExternalFloatArray(MacroAssembler* masm) { |
| 1310 | KeyedStoreIC::GenerateExternalArray(masm, kExternalFloatArray); |
| 1311 | } |
| 1312 | |
| 1313 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1314 | static void Generate_KeyedStoreIC_Miss(MacroAssembler* masm) { |
| 1315 | KeyedStoreIC::GenerateMiss(masm); |
| 1316 | } |
| 1317 | |
| 1318 | |
| 1319 | static void Generate_KeyedStoreIC_Initialize(MacroAssembler* masm) { |
| 1320 | KeyedStoreIC::GenerateInitialize(masm); |
| 1321 | } |
| 1322 | |
| 1323 | |
| 1324 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 1325 | static void Generate_LoadIC_DebugBreak(MacroAssembler* masm) { |
| 1326 | Debug::GenerateLoadICDebugBreak(masm); |
| 1327 | } |
| 1328 | |
| 1329 | |
| 1330 | static void Generate_StoreIC_DebugBreak(MacroAssembler* masm) { |
| 1331 | Debug::GenerateStoreICDebugBreak(masm); |
| 1332 | } |
| 1333 | |
| 1334 | |
| 1335 | static void Generate_KeyedLoadIC_DebugBreak(MacroAssembler* masm) { |
| 1336 | Debug::GenerateKeyedLoadICDebugBreak(masm); |
| 1337 | } |
| 1338 | |
| 1339 | |
| 1340 | static void Generate_KeyedStoreIC_DebugBreak(MacroAssembler* masm) { |
| 1341 | Debug::GenerateKeyedStoreICDebugBreak(masm); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | static void Generate_ConstructCall_DebugBreak(MacroAssembler* masm) { |
| 1346 | Debug::GenerateConstructCallDebugBreak(masm); |
| 1347 | } |
| 1348 | |
| 1349 | |
| 1350 | static void Generate_Return_DebugBreak(MacroAssembler* masm) { |
| 1351 | Debug::GenerateReturnDebugBreak(masm); |
| 1352 | } |
| 1353 | |
| 1354 | |
| 1355 | static void Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) { |
| 1356 | Debug::GenerateStubNoRegistersDebugBreak(masm); |
| 1357 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1358 | |
| 1359 | static void Generate_PlainReturn_LiveEdit(MacroAssembler* masm) { |
| 1360 | Debug::GeneratePlainReturnLiveEdit(masm); |
| 1361 | } |
| 1362 | |
| 1363 | static void Generate_FrameDropper_LiveEdit(MacroAssembler* masm) { |
| 1364 | Debug::GenerateFrameDropperLiveEdit(masm); |
| 1365 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1366 | #endif |
| 1367 | |
| 1368 | Object* Builtins::builtins_[builtin_count] = { NULL, }; |
| 1369 | const char* Builtins::names_[builtin_count] = { NULL, }; |
| 1370 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1371 | #define DEF_ENUM_C(name, ignore) FUNCTION_ADDR(Builtin_##name), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1372 | Address Builtins::c_functions_[cfunction_count] = { |
| 1373 | BUILTIN_LIST_C(DEF_ENUM_C) |
| 1374 | }; |
| 1375 | #undef DEF_ENUM_C |
| 1376 | |
| 1377 | #define DEF_JS_NAME(name, ignore) #name, |
| 1378 | #define DEF_JS_ARGC(ignore, argc) argc, |
| 1379 | const char* Builtins::javascript_names_[id_count] = { |
| 1380 | BUILTINS_LIST_JS(DEF_JS_NAME) |
| 1381 | }; |
| 1382 | |
| 1383 | int Builtins::javascript_argc_[id_count] = { |
| 1384 | BUILTINS_LIST_JS(DEF_JS_ARGC) |
| 1385 | }; |
| 1386 | #undef DEF_JS_NAME |
| 1387 | #undef DEF_JS_ARGC |
| 1388 | |
| 1389 | static bool is_initialized = false; |
| 1390 | void Builtins::Setup(bool create_heap_objects) { |
| 1391 | ASSERT(!is_initialized); |
| 1392 | |
| 1393 | // Create a scope for the handles in the builtins. |
| 1394 | HandleScope scope; |
| 1395 | |
| 1396 | struct BuiltinDesc { |
| 1397 | byte* generator; |
| 1398 | byte* c_code; |
| 1399 | const char* s_name; // name is only used for generating log information. |
| 1400 | int name; |
| 1401 | Code::Flags flags; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1402 | BuiltinExtraArguments extra_args; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1403 | }; |
| 1404 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1405 | #define DEF_FUNCTION_PTR_C(name, extra_args) \ |
| 1406 | { FUNCTION_ADDR(Generate_Adaptor), \ |
| 1407 | FUNCTION_ADDR(Builtin_##name), \ |
| 1408 | #name, \ |
| 1409 | c_##name, \ |
| 1410 | Code::ComputeFlags(Code::BUILTIN), \ |
| 1411 | extra_args \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1412 | }, |
| 1413 | |
| 1414 | #define DEF_FUNCTION_PTR_A(name, kind, state) \ |
| 1415 | { FUNCTION_ADDR(Generate_##name), \ |
| 1416 | NULL, \ |
| 1417 | #name, \ |
| 1418 | name, \ |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1419 | Code::ComputeFlags(Code::kind, NOT_IN_LOOP, state), \ |
| 1420 | NO_EXTRA_ARGUMENTS \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1421 | }, |
| 1422 | |
| 1423 | // Define array of pointers to generators and C builtin functions. |
| 1424 | static BuiltinDesc functions[] = { |
| 1425 | BUILTIN_LIST_C(DEF_FUNCTION_PTR_C) |
| 1426 | BUILTIN_LIST_A(DEF_FUNCTION_PTR_A) |
| 1427 | BUILTIN_LIST_DEBUG_A(DEF_FUNCTION_PTR_A) |
| 1428 | // Terminator: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1429 | { NULL, NULL, NULL, builtin_count, static_cast<Code::Flags>(0), |
| 1430 | NO_EXTRA_ARGUMENTS } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1431 | }; |
| 1432 | |
| 1433 | #undef DEF_FUNCTION_PTR_C |
| 1434 | #undef DEF_FUNCTION_PTR_A |
| 1435 | |
| 1436 | // For now we generate builtin adaptor code into a stack-allocated |
| 1437 | // buffer, before copying it into individual code objects. |
| 1438 | byte buffer[4*KB]; |
| 1439 | |
| 1440 | // Traverse the list of builtins and generate an adaptor in a |
| 1441 | // separate code object for each one. |
| 1442 | for (int i = 0; i < builtin_count; i++) { |
| 1443 | if (create_heap_objects) { |
| 1444 | MacroAssembler masm(buffer, sizeof buffer); |
| 1445 | // Generate the code/adaptor. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1446 | typedef void (*Generator)(MacroAssembler*, int, BuiltinExtraArguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1447 | Generator g = FUNCTION_CAST<Generator>(functions[i].generator); |
| 1448 | // We pass all arguments to the generator, but it may not use all of |
| 1449 | // them. This works because the first arguments are on top of the |
| 1450 | // stack. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1451 | g(&masm, functions[i].name, functions[i].extra_args); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1452 | // Move the code into the object heap. |
| 1453 | CodeDesc desc; |
| 1454 | masm.GetCode(&desc); |
| 1455 | Code::Flags flags = functions[i].flags; |
| 1456 | Object* code; |
| 1457 | { |
| 1458 | // During startup it's OK to always allocate and defer GC to later. |
| 1459 | // This simplifies things because we don't need to retry. |
| 1460 | AlwaysAllocateScope __scope__; |
| 1461 | code = Heap::CreateCode(desc, NULL, flags, masm.CodeObject()); |
| 1462 | if (code->IsFailure()) { |
| 1463 | v8::internal::V8::FatalProcessOutOfMemory("CreateCode"); |
| 1464 | } |
| 1465 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1466 | // Log the event and add the code to the builtins array. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1467 | PROFILE(CodeCreateEvent(Logger::BUILTIN_TAG, |
| 1468 | Code::cast(code), functions[i].s_name)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1469 | builtins_[i] = code; |
| 1470 | #ifdef ENABLE_DISASSEMBLER |
| 1471 | if (FLAG_print_builtin_code) { |
| 1472 | PrintF("Builtin: %s\n", functions[i].s_name); |
| 1473 | Code::cast(code)->Disassemble(functions[i].s_name); |
| 1474 | PrintF("\n"); |
| 1475 | } |
| 1476 | #endif |
| 1477 | } else { |
| 1478 | // Deserializing. The values will be filled in during IterateBuiltins. |
| 1479 | builtins_[i] = NULL; |
| 1480 | } |
| 1481 | names_[i] = functions[i].s_name; |
| 1482 | } |
| 1483 | |
| 1484 | // Mark as initialized. |
| 1485 | is_initialized = true; |
| 1486 | } |
| 1487 | |
| 1488 | |
| 1489 | void Builtins::TearDown() { |
| 1490 | is_initialized = false; |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | void Builtins::IterateBuiltins(ObjectVisitor* v) { |
| 1495 | v->VisitPointers(&builtins_[0], &builtins_[0] + builtin_count); |
| 1496 | } |
| 1497 | |
| 1498 | |
| 1499 | const char* Builtins::Lookup(byte* pc) { |
| 1500 | if (is_initialized) { // may be called during initialization (disassembler!) |
| 1501 | for (int i = 0; i < builtin_count; i++) { |
| 1502 | Code* entry = Code::cast(builtins_[i]); |
| 1503 | if (entry->contains(pc)) { |
| 1504 | return names_[i]; |
| 1505 | } |
| 1506 | } |
| 1507 | } |
| 1508 | return NULL; |
| 1509 | } |
| 1510 | |
| 1511 | |
| 1512 | } } // namespace v8::internal |