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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 // 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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121 const int initial_capacity = JSArray::kPreallocatedArrayElements; | 121 const int initial_capacity = JSArray::kPreallocatedArrayElements; |
122 STATIC_ASSERT(initial_capacity >= 0); | 122 STATIC_ASSERT(initial_capacity >= 0); |
123 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); | 123 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); |
124 | 124 |
125 // Allocate the JSArray object together with space for a fixed array with the | 125 // Allocate the JSArray object together with space for a fixed array with the |
126 // requested elements. | 126 // requested elements. |
127 int size = JSArray::kSize; | 127 int size = JSArray::kSize; |
128 if (initial_capacity > 0) { | 128 if (initial_capacity > 0) { |
129 size += FixedArray::SizeFor(initial_capacity); | 129 size += FixedArray::SizeFor(initial_capacity); |
130 } | 130 } |
131 __ AllocateInNewSpace(size, | 131 __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT); |
132 result, | 132 |
133 scratch2, | |
134 scratch3, | |
135 gc_required, | |
136 TAG_OBJECT); | |
137 // Allocated the JSArray. Now initialize the fields except for the elements | 133 // Allocated the JSArray. Now initialize the fields except for the elements |
138 // array. | 134 // array. |
139 // result: JSObject | 135 // result: JSObject |
140 // scratch1: initial map | 136 // scratch1: initial map |
141 // scratch2: start of next object | 137 // scratch2: start of next object |
142 __ sw(scratch1, FieldMemOperand(result, JSObject::kMapOffset)); | 138 __ sw(scratch1, FieldMemOperand(result, JSObject::kMapOffset)); |
143 __ LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); | 139 __ LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); |
144 __ sw(scratch1, FieldMemOperand(result, JSArray::kPropertiesOffset)); | 140 __ sw(scratch1, FieldMemOperand(result, JSArray::kPropertiesOffset)); |
145 // Field JSArray::kElementsOffset is initialized later. | 141 // Field JSArray::kElementsOffset is initialized later. |
146 __ mov(scratch3, zero_reg); | 142 __ mov(scratch3, zero_reg); |
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658 __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, t0); | 654 __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, t0); |
659 __ bind(&argument_is_string); | 655 __ bind(&argument_is_string); |
660 | 656 |
661 // ----------- S t a t e ------------- | 657 // ----------- S t a t e ------------- |
662 // -- a2 : argument converted to string | 658 // -- a2 : argument converted to string |
663 // -- a1 : constructor function | 659 // -- a1 : constructor function |
664 // -- ra : return address | 660 // -- ra : return address |
665 // ----------------------------------- | 661 // ----------------------------------- |
666 | 662 |
667 Label gc_required; | 663 Label gc_required; |
668 __ AllocateInNewSpace(JSValue::kSize, | 664 __ Allocate(JSValue::kSize, |
669 v0, // Result. | 665 v0, // Result. |
670 a3, // Scratch. | 666 a3, // Scratch. |
671 t0, // Scratch. | 667 t0, // Scratch. |
672 &gc_required, | 668 &gc_required, |
673 TAG_OBJECT); | 669 TAG_OBJECT); |
674 | 670 |
675 // Initialising the String Object. | 671 // Initialising the String Object. |
676 Register map = a3; | 672 Register map = a3; |
677 __ LoadGlobalFunctionInitialMap(function, map, t0); | 673 __ LoadGlobalFunctionInitialMap(function, map, t0); |
678 if (FLAG_debug_code) { | 674 if (FLAG_debug_code) { |
679 __ lbu(t0, FieldMemOperand(map, Map::kInstanceSizeOffset)); | 675 __ lbu(t0, FieldMemOperand(map, Map::kInstanceSizeOffset)); |
680 __ Assert(eq, "Unexpected string wrapper instance size", | 676 __ Assert(eq, "Unexpected string wrapper instance size", |
681 t0, Operand(JSValue::kSize >> kPointerSizeLog2)); | 677 t0, Operand(JSValue::kSize >> kPointerSizeLog2)); |
682 __ lbu(t0, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset)); | 678 __ lbu(t0, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset)); |
683 __ Assert(eq, "Unexpected unused properties of string wrapper", | 679 __ Assert(eq, "Unexpected unused properties of string wrapper", |
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1957 __ bind(&dont_adapt_arguments); | 1953 __ bind(&dont_adapt_arguments); |
1958 __ Jump(a3); | 1954 __ Jump(a3); |
1959 } | 1955 } |
1960 | 1956 |
1961 | 1957 |
1962 #undef __ | 1958 #undef __ |
1963 | 1959 |
1964 } } // namespace v8::internal | 1960 } } // namespace v8::internal |
1965 | 1961 |
1966 #endif // V8_TARGET_ARCH_MIPS | 1962 #endif // V8_TARGET_ARCH_MIPS |
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