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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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647 // Slow case: call the runtime. | 647 // Slow case: call the runtime. |
648 frame_->EmitPush(r0); | 648 frame_->EmitPush(r0); |
649 frame_->CallRuntime(Runtime::kToBool, 1); | 649 frame_->CallRuntime(Runtime::kToBool, 1); |
650 // Convert the result (r0) to a condition code. | 650 // Convert the result (r0) to a condition code. |
651 __ cmp(r0, Operand(Factory::false_value())); | 651 __ cmp(r0, Operand(Factory::false_value())); |
652 | 652 |
653 cc_reg_ = ne; | 653 cc_reg_ = ne; |
654 } | 654 } |
655 | 655 |
656 | 656 |
657 class GetPropertyStub : public CodeStub { | |
658 public: | |
659 GetPropertyStub() { } | |
660 | |
661 private: | |
662 Major MajorKey() { return GetProperty; } | |
663 int MinorKey() { return 0; } | |
664 void Generate(MacroAssembler* masm); | |
665 }; | |
666 | |
667 | |
668 class SetPropertyStub : public CodeStub { | |
669 public: | |
670 SetPropertyStub() { } | |
671 | |
672 private: | |
673 Major MajorKey() { return SetProperty; } | |
674 int MinorKey() { return 0; } | |
675 void Generate(MacroAssembler* masm); | |
676 }; | |
677 | |
678 | |
679 class GenericBinaryOpStub : public CodeStub { | 657 class GenericBinaryOpStub : public CodeStub { |
680 public: | 658 public: |
681 GenericBinaryOpStub(Token::Value op, | 659 GenericBinaryOpStub(Token::Value op, |
682 OverwriteMode mode) | 660 OverwriteMode mode) |
683 : op_(op), mode_(mode) { } | 661 : op_(op), mode_(mode) { } |
684 | 662 |
685 private: | 663 private: |
686 Token::Value op_; | 664 Token::Value op_; |
687 OverwriteMode mode_; | 665 OverwriteMode mode_; |
688 | 666 |
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4348 frame->EmitPush(result.reg()); | 4326 frame->EmitPush(result.reg()); |
4349 break; | 4327 break; |
4350 } | 4328 } |
4351 | 4329 |
4352 default: | 4330 default: |
4353 UNREACHABLE(); | 4331 UNREACHABLE(); |
4354 } | 4332 } |
4355 } | 4333 } |
4356 | 4334 |
4357 | 4335 |
4358 void GetPropertyStub::Generate(MacroAssembler* masm) { | |
4359 // sp[0]: key | |
4360 // sp[1]: receiver | |
4361 Label slow, fast; | |
4362 // Get the key and receiver object from the stack. | |
4363 __ ldm(ia, sp, r0.bit() | r1.bit()); | |
4364 // Check that the key is a smi. | |
4365 __ tst(r0, Operand(kSmiTagMask)); | |
4366 __ b(ne, &slow); | |
4367 __ mov(r0, Operand(r0, ASR, kSmiTagSize)); | |
4368 // Check that the object isn't a smi. | |
4369 __ tst(r1, Operand(kSmiTagMask)); | |
4370 __ b(eq, &slow); | |
4371 | |
4372 // Check that the object is some kind of JS object EXCEPT JS Value type. | |
4373 // In the case that the object is a value-wrapper object, | |
4374 // we enter the runtime system to make sure that indexing into string | |
4375 // objects work as intended. | |
4376 ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE); | |
4377 __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); | |
4378 __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); | |
4379 __ cmp(r2, Operand(JS_OBJECT_TYPE)); | |
4380 __ b(lt, &slow); | |
4381 | |
4382 // Get the elements array of the object. | |
4383 __ ldr(r1, FieldMemOperand(r1, JSObject::kElementsOffset)); | |
4384 // Check that the object is in fast mode (not dictionary). | |
4385 __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset)); | |
4386 __ cmp(r3, Operand(Factory::hash_table_map())); | |
4387 __ b(eq, &slow); | |
4388 // Check that the key (index) is within bounds. | |
4389 __ ldr(r3, FieldMemOperand(r1, Array::kLengthOffset)); | |
4390 __ cmp(r0, Operand(r3)); | |
4391 __ b(lo, &fast); | |
4392 | |
4393 // Slow case: Push extra copies of the arguments (2). | |
4394 __ bind(&slow); | |
4395 __ ldm(ia, sp, r0.bit() | r1.bit()); | |
4396 __ stm(db_w, sp, r0.bit() | r1.bit()); | |
4397 // Do tail-call to runtime routine. | |
4398 __ TailCallRuntime(ExternalReference(Runtime::kGetProperty), 2); | |
4399 | |
4400 // Fast case: Do the load. | |
4401 __ bind(&fast); | |
4402 __ add(r3, r1, Operand(Array::kHeaderSize - kHeapObjectTag)); | |
4403 __ ldr(r0, MemOperand(r3, r0, LSL, kPointerSizeLog2)); | |
4404 __ cmp(r0, Operand(Factory::the_hole_value())); | |
4405 // In case the loaded value is the_hole we have to consult GetProperty | |
4406 // to ensure the prototype chain is searched. | |
4407 __ b(eq, &slow); | |
4408 | |
4409 __ StubReturn(1); | |
4410 } | |
4411 | |
4412 | |
4413 void SetPropertyStub::Generate(MacroAssembler* masm) { | |
4414 // r0 : value | |
4415 // sp[0] : key | |
4416 // sp[1] : receiver | |
4417 | |
4418 Label slow, fast, array, extra, exit; | |
4419 // Get the key and the object from the stack. | |
4420 __ ldm(ia, sp, r1.bit() | r3.bit()); // r1 = key, r3 = receiver | |
4421 // Check that the key is a smi. | |
4422 __ tst(r1, Operand(kSmiTagMask)); | |
4423 __ b(ne, &slow); | |
4424 // Check that the object isn't a smi. | |
4425 __ tst(r3, Operand(kSmiTagMask)); | |
4426 __ b(eq, &slow); | |
4427 // Get the type of the object from its map. | |
4428 __ ldr(r2, FieldMemOperand(r3, HeapObject::kMapOffset)); | |
4429 __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); | |
4430 // Check if the object is a JS array or not. | |
4431 __ cmp(r2, Operand(JS_ARRAY_TYPE)); | |
4432 __ b(eq, &array); | |
4433 // Check that the object is some kind of JS object. | |
4434 __ cmp(r2, Operand(FIRST_JS_OBJECT_TYPE)); | |
4435 __ b(lt, &slow); | |
4436 | |
4437 | |
4438 // Object case: Check key against length in the elements array. | |
4439 __ ldr(r3, FieldMemOperand(r3, JSObject::kElementsOffset)); | |
4440 // Check that the object is in fast mode (not dictionary). | |
4441 __ ldr(r2, FieldMemOperand(r3, HeapObject::kMapOffset)); | |
4442 __ cmp(r2, Operand(Factory::hash_table_map())); | |
4443 __ b(eq, &slow); | |
4444 // Untag the key (for checking against untagged length in the fixed array). | |
4445 __ mov(r1, Operand(r1, ASR, kSmiTagSize)); | |
4446 // Compute address to store into and check array bounds. | |
4447 __ add(r2, r3, Operand(Array::kHeaderSize - kHeapObjectTag)); | |
4448 __ add(r2, r2, Operand(r1, LSL, kPointerSizeLog2)); | |
4449 __ ldr(ip, FieldMemOperand(r3, Array::kLengthOffset)); | |
4450 __ cmp(r1, Operand(ip)); | |
4451 __ b(lo, &fast); | |
4452 | |
4453 | |
4454 // Slow case: Push extra copies of the arguments (3). | |
4455 __ bind(&slow); | |
4456 __ ldm(ia, sp, r1.bit() | r3.bit()); // r0 == value, r1 == key, r3 == object | |
4457 __ stm(db_w, sp, r0.bit() | r1.bit() | r3.bit()); | |
4458 // Do tail-call to runtime routine. | |
4459 __ TailCallRuntime(ExternalReference(Runtime::kSetProperty), 3); | |
4460 | |
4461 | |
4462 // Extra capacity case: Check if there is extra capacity to | |
4463 // perform the store and update the length. Used for adding one | |
4464 // element to the array by writing to array[array.length]. | |
4465 // r0 == value, r1 == key, r2 == elements, r3 == object | |
4466 __ bind(&extra); | |
4467 __ b(ne, &slow); // do not leave holes in the array | |
4468 __ mov(r1, Operand(r1, ASR, kSmiTagSize)); // untag | |
4469 __ ldr(ip, FieldMemOperand(r2, Array::kLengthOffset)); | |
4470 __ cmp(r1, Operand(ip)); | |
4471 __ b(hs, &slow); | |
4472 __ mov(r1, Operand(r1, LSL, kSmiTagSize)); // restore tag | |
4473 __ add(r1, r1, Operand(1 << kSmiTagSize)); // and increment | |
4474 __ str(r1, FieldMemOperand(r3, JSArray::kLengthOffset)); | |
4475 __ mov(r3, Operand(r2)); | |
4476 // NOTE: Computing the address to store into must take the fact | |
4477 // that the key has been incremented into account. | |
4478 int displacement = Array::kHeaderSize - kHeapObjectTag - | |
4479 ((1 << kSmiTagSize) * 2); | |
4480 __ add(r2, r2, Operand(displacement)); | |
4481 __ add(r2, r2, Operand(r1, LSL, kPointerSizeLog2 - kSmiTagSize)); | |
4482 __ b(&fast); | |
4483 | |
4484 | |
4485 // Array case: Get the length and the elements array from the JS | |
4486 // array. Check that the array is in fast mode; if it is the | |
4487 // length is always a smi. | |
4488 // r0 == value, r3 == object | |
4489 __ bind(&array); | |
4490 __ ldr(r2, FieldMemOperand(r3, JSObject::kElementsOffset)); | |
4491 __ ldr(r1, FieldMemOperand(r2, HeapObject::kMapOffset)); | |
4492 __ cmp(r1, Operand(Factory::hash_table_map())); | |
4493 __ b(eq, &slow); | |
4494 | |
4495 // Check the key against the length in the array, compute the | |
4496 // address to store into and fall through to fast case. | |
4497 __ ldr(r1, MemOperand(sp)); | |
4498 // r0 == value, r1 == key, r2 == elements, r3 == object. | |
4499 __ ldr(ip, FieldMemOperand(r3, JSArray::kLengthOffset)); | |
4500 __ cmp(r1, Operand(ip)); | |
4501 __ b(hs, &extra); | |
4502 __ mov(r3, Operand(r2)); | |
4503 __ add(r2, r2, Operand(Array::kHeaderSize - kHeapObjectTag)); | |
4504 __ add(r2, r2, Operand(r1, LSL, kPointerSizeLog2 - kSmiTagSize)); | |
4505 | |
4506 | |
4507 // Fast case: Do the store. | |
4508 // r0 == value, r2 == address to store into, r3 == elements | |
4509 __ bind(&fast); | |
4510 __ str(r0, MemOperand(r2)); | |
4511 // Skip write barrier if the written value is a smi. | |
4512 __ tst(r0, Operand(kSmiTagMask)); | |
4513 __ b(eq, &exit); | |
4514 // Update write barrier for the elements array address. | |
4515 __ sub(r1, r2, Operand(r3)); | |
4516 __ RecordWrite(r3, r1, r2); | |
4517 __ bind(&exit); | |
4518 __ StubReturn(1); | |
4519 } | |
4520 | |
4521 | |
4522 static void HandleBinaryOpSlowCases(MacroAssembler* masm, | 4336 static void HandleBinaryOpSlowCases(MacroAssembler* masm, |
4523 Label* not_smi, | 4337 Label* not_smi, |
4524 const Builtins::JavaScript& builtin, | 4338 const Builtins::JavaScript& builtin, |
4525 Token::Value operation, | 4339 Token::Value operation, |
4526 int swi_number, | 4340 int swi_number, |
4527 OverwriteMode mode) { | 4341 OverwriteMode mode) { |
4528 Label slow; | 4342 Label slow; |
4529 if (mode == NO_OVERWRITE) { | 4343 if (mode == NO_OVERWRITE) { |
4530 __ bind(not_smi); | 4344 __ bind(not_smi); |
4531 } | 4345 } |
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4571 __ mov(r5, Operand(ExternalReference::double_fp_operation(operation))); | 4385 __ mov(r5, Operand(ExternalReference::double_fp_operation(operation))); |
4572 #if !defined(__arm__) | 4386 #if !defined(__arm__) |
4573 // Notify the simulator that we are calling an add routine in C. | 4387 // Notify the simulator that we are calling an add routine in C. |
4574 __ swi(swi_number); | 4388 __ swi(swi_number); |
4575 #else | 4389 #else |
4576 // Actually call the add routine written in C. | 4390 // Actually call the add routine written in C. |
4577 __ Call(r5); | 4391 __ Call(r5); |
4578 #endif | 4392 #endif |
4579 // Store answer in the overwritable heap number. | 4393 // Store answer in the overwritable heap number. |
4580 __ pop(r4); | 4394 __ pop(r4); |
| 4395 #if !defined(__ARM_EABI__) && defined(__arm__) |
| 4396 // Double returned in fp coprocessor register 0 and 1, encoded as register |
| 4397 // cr8. Offsets must be divisible by 4 for coprocessor so we need to |
| 4398 // substract the tag from r4. |
| 4399 __ sub(r5, r4, Operand(kHeapObjectTag)); |
| 4400 __ stc(p1, cr8, MemOperand(r5, HeapNumber::kValueOffset)); |
| 4401 #else |
| 4402 // Double returned in fp coprocessor register 0 and 1. |
4581 __ str(r0, FieldMemOperand(r4, HeapNumber::kValueOffset)); | 4403 __ str(r0, FieldMemOperand(r4, HeapNumber::kValueOffset)); |
4582 __ str(r1, FieldMemOperand(r4, HeapNumber::kValueOffset + kPointerSize)); | 4404 __ str(r1, FieldMemOperand(r4, HeapNumber::kValueOffset + kPointerSize)); |
| 4405 #endif |
4583 __ mov(r0, Operand(r4)); | 4406 __ mov(r0, Operand(r4)); |
4584 // And we are done. | 4407 // And we are done. |
4585 __ pop(pc); | 4408 __ pop(pc); |
4586 } | 4409 } |
4587 } | 4410 } |
4588 | 4411 |
4589 | 4412 |
4590 void GenericBinaryOpStub::Generate(MacroAssembler* masm) { | 4413 void GenericBinaryOpStub::Generate(MacroAssembler* masm) { |
4591 // r1 : x | 4414 // r1 : x |
4592 // r0 : y | 4415 // r0 : y |
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5313 __ mov(r2, Operand(0)); | 5136 __ mov(r2, Operand(0)); |
5314 __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); | 5137 __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); |
5315 __ Jump(Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)), | 5138 __ Jump(Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)), |
5316 RelocInfo::CODE_TARGET); | 5139 RelocInfo::CODE_TARGET); |
5317 } | 5140 } |
5318 | 5141 |
5319 | 5142 |
5320 #undef __ | 5143 #undef __ |
5321 | 5144 |
5322 } } // namespace v8::internal | 5145 } } // namespace v8::internal |
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