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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
8 #include "src/ic/ic.h" | 8 #include "src/ic/ic.h" |
9 #include "src/ic/ic-compiler.h" | 9 #include "src/ic/ic-compiler.h" |
10 #include "src/ic/stub-cache.h" | 10 #include "src/ic/stub-cache.h" |
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609 Register elements_map = t2; | 609 Register elements_map = t2; |
610 Register elements = t3; // Elements array of the receiver. | 610 Register elements = t3; // Elements array of the receiver. |
611 // t0 and t1 are used as general scratch registers. | 611 // t0 and t1 are used as general scratch registers. |
612 | 612 |
613 // Check that the key is a smi. | 613 // Check that the key is a smi. |
614 __ JumpIfNotSmi(key, &maybe_name_key); | 614 __ JumpIfNotSmi(key, &maybe_name_key); |
615 // Check that the object isn't a smi. | 615 // Check that the object isn't a smi. |
616 __ JumpIfSmi(receiver, &slow); | 616 __ JumpIfSmi(receiver, &slow); |
617 // Get the map of the object. | 617 // Get the map of the object. |
618 __ lw(receiver_map, FieldMemOperand(receiver, HeapObject::kMapOffset)); | 618 __ lw(receiver_map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
619 // Check that the receiver does not require access checks and is not observed. | 619 // Check that the receiver does not require access checks. |
620 // The generic stub does not perform map checks or handle observed objects. | 620 // The generic stub does not perform map checks. |
621 __ lbu(t0, FieldMemOperand(receiver_map, Map::kBitFieldOffset)); | 621 __ lbu(t0, FieldMemOperand(receiver_map, Map::kBitFieldOffset)); |
622 __ And(t0, t0, | 622 __ And(t0, t0, Operand(1 << Map::kIsAccessCheckNeeded)); |
623 Operand(1 << Map::kIsAccessCheckNeeded | 1 << Map::kIsObserved)); | |
624 __ Branch(&slow, ne, t0, Operand(zero_reg)); | 623 __ Branch(&slow, ne, t0, Operand(zero_reg)); |
625 // Check if the object is a JS array or not. | 624 // Check if the object is a JS array or not. |
626 __ lbu(t0, FieldMemOperand(receiver_map, Map::kInstanceTypeOffset)); | 625 __ lbu(t0, FieldMemOperand(receiver_map, Map::kInstanceTypeOffset)); |
627 __ Branch(&array, eq, t0, Operand(JS_ARRAY_TYPE)); | 626 __ Branch(&array, eq, t0, Operand(JS_ARRAY_TYPE)); |
628 // Check that the object is some kind of JS object EXCEPT JS Value type. In | 627 // Check that the object is some kind of JS object EXCEPT JS Value type. In |
629 // the case that the object is a value-wrapper object, we enter the runtime | 628 // the case that the object is a value-wrapper object, we enter the runtime |
630 // system to make sure that indexing into string objects works as intended. | 629 // system to make sure that indexing into string objects works as intended. |
631 STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); | 630 STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
632 __ Branch(&slow, lo, t0, Operand(JS_OBJECT_TYPE)); | 631 __ Branch(&slow, lo, t0, Operand(JS_OBJECT_TYPE)); |
633 | 632 |
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902 break; | 901 break; |
903 default: | 902 default: |
904 UNIMPLEMENTED(); | 903 UNIMPLEMENTED(); |
905 } | 904 } |
906 patcher.ChangeBranchCondition(branch_instr, opcode); | 905 patcher.ChangeBranchCondition(branch_instr, opcode); |
907 } | 906 } |
908 } // namespace internal | 907 } // namespace internal |
909 } // namespace v8 | 908 } // namespace v8 |
910 | 909 |
911 #endif // V8_TARGET_ARCH_MIPS | 910 #endif // V8_TARGET_ARCH_MIPS |
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