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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 84 __ pop(r3); | 84 __ pop(r3); |
| 85 | 85 |
| 86 // Attempt to allocate new JSFunction in new space. | 86 // Attempt to allocate new JSFunction in new space. |
| 87 __ AllocateInNewSpace(JSFunction::kSize, | 87 __ AllocateInNewSpace(JSFunction::kSize, |
| 88 r0, | 88 r0, |
| 89 r1, | 89 r1, |
| 90 r2, | 90 r2, |
| 91 &gc, | 91 &gc, |
| 92 TAG_OBJECT); | 92 TAG_OBJECT); |
| 93 | 93 |
| 94 int map_index = strict_mode_ == kStrictMode |
| 95 ? Context::STRICT_MODE_FUNCTION_MAP_INDEX |
| 96 : Context::FUNCTION_MAP_INDEX; |
| 97 |
| 94 // Compute the function map in the current global context and set that | 98 // Compute the function map in the current global context and set that |
| 95 // as the map of the allocated object. | 99 // as the map of the allocated object. |
| 96 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); | 100 __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 97 __ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalContextOffset)); | 101 __ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalContextOffset)); |
| 98 __ ldr(r2, MemOperand(r2, Context::SlotOffset(Context::FUNCTION_MAP_INDEX))); | 102 __ ldr(r2, MemOperand(r2, Context::SlotOffset(map_index))); |
| 99 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); | 103 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 100 | 104 |
| 101 // Initialize the rest of the function. We don't have to update the | 105 // Initialize the rest of the function. We don't have to update the |
| 102 // write barrier because the allocated object is in new space. | 106 // write barrier because the allocated object is in new space. |
| 103 __ LoadRoot(r1, Heap::kEmptyFixedArrayRootIndex); | 107 __ LoadRoot(r1, Heap::kEmptyFixedArrayRootIndex); |
| 104 __ LoadRoot(r2, Heap::kTheHoleValueRootIndex); | 108 __ LoadRoot(r2, Heap::kTheHoleValueRootIndex); |
| 105 __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); | 109 __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); |
| 106 __ str(r1, FieldMemOperand(r0, JSObject::kPropertiesOffset)); | 110 __ str(r1, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 107 __ str(r1, FieldMemOperand(r0, JSObject::kElementsOffset)); | 111 __ str(r1, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 108 __ str(r2, FieldMemOperand(r0, JSFunction::kPrototypeOrInitialMapOffset)); | 112 __ str(r2, FieldMemOperand(r0, JSFunction::kPrototypeOrInitialMapOffset)); |
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| 4777 | 4781 |
| 4778 // Try the new space allocation. Start out with computing the size | 4782 // Try the new space allocation. Start out with computing the size |
| 4779 // of the arguments object and the elements array in words. | 4783 // of the arguments object and the elements array in words. |
| 4780 Label add_arguments_object; | 4784 Label add_arguments_object; |
| 4781 __ bind(&try_allocate); | 4785 __ bind(&try_allocate); |
| 4782 __ cmp(r1, Operand(0, RelocInfo::NONE)); | 4786 __ cmp(r1, Operand(0, RelocInfo::NONE)); |
| 4783 __ b(eq, &add_arguments_object); | 4787 __ b(eq, &add_arguments_object); |
| 4784 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); | 4788 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); |
| 4785 __ add(r1, r1, Operand(FixedArray::kHeaderSize / kPointerSize)); | 4789 __ add(r1, r1, Operand(FixedArray::kHeaderSize / kPointerSize)); |
| 4786 __ bind(&add_arguments_object); | 4790 __ bind(&add_arguments_object); |
| 4787 __ add(r1, r1, Operand(Heap::kArgumentsObjectSize / kPointerSize)); | 4791 __ add(r1, r1, Operand(GetArgumentsObjectSize() / kPointerSize)); |
| 4788 | 4792 |
| 4789 // Do the allocation of both objects in one go. | 4793 // Do the allocation of both objects in one go. |
| 4790 __ AllocateInNewSpace( | 4794 __ AllocateInNewSpace( |
| 4791 r1, | 4795 r1, |
| 4792 r0, | 4796 r0, |
| 4793 r2, | 4797 r2, |
| 4794 r3, | 4798 r3, |
| 4795 &runtime, | 4799 &runtime, |
| 4796 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); | 4800 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); |
| 4797 | 4801 |
| 4798 // Get the arguments boilerplate from the current (global) context. | 4802 // Get the arguments boilerplate from the current (global) context. |
| 4799 int offset = Context::SlotOffset(Context::ARGUMENTS_BOILERPLATE_INDEX); | |
| 4800 __ ldr(r4, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); | 4803 __ ldr(r4, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 4801 __ ldr(r4, FieldMemOperand(r4, GlobalObject::kGlobalContextOffset)); | 4804 __ ldr(r4, FieldMemOperand(r4, GlobalObject::kGlobalContextOffset)); |
| 4802 __ ldr(r4, MemOperand(r4, offset)); | 4805 __ ldr(r4, MemOperand(r4, |
| 4806 Context::SlotOffset(GetArgumentsBoilerplateIndex()))); |
| 4803 | 4807 |
| 4804 // Copy the JS object part. | 4808 // Copy the JS object part. |
| 4805 __ CopyFields(r0, r4, r3.bit(), JSObject::kHeaderSize / kPointerSize); | 4809 __ CopyFields(r0, r4, r3.bit(), JSObject::kHeaderSize / kPointerSize); |
| 4806 | 4810 |
| 4807 // Setup the callee in-object property. | 4811 if (type_ == NEW_NON_STRICT) { |
| 4808 STATIC_ASSERT(Heap::arguments_callee_index == 0); | 4812 // Setup the callee in-object property. |
| 4809 __ ldr(r3, MemOperand(sp, 2 * kPointerSize)); | 4813 STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1); |
| 4810 __ str(r3, FieldMemOperand(r0, JSObject::kHeaderSize)); | 4814 __ ldr(r3, MemOperand(sp, 2 * kPointerSize)); |
| 4815 const int kCalleeOffset = JSObject::kHeaderSize + |
| 4816 Heap::kArgumentsCalleeIndex * kPointerSize; |
| 4817 __ str(r3, FieldMemOperand(r0, kCalleeOffset)); |
| 4818 } |
| 4811 | 4819 |
| 4812 // Get the length (smi tagged) and set that as an in-object property too. | 4820 // Get the length (smi tagged) and set that as an in-object property too. |
| 4813 STATIC_ASSERT(Heap::arguments_length_index == 1); | 4821 STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
| 4814 __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); | 4822 __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); |
| 4815 __ str(r1, FieldMemOperand(r0, JSObject::kHeaderSize + kPointerSize)); | 4823 __ str(r1, FieldMemOperand(r0, JSObject::kHeaderSize + |
| 4824 Heap::kArgumentsLengthIndex * kPointerSize)); |
| 4816 | 4825 |
| 4817 // If there are no actual arguments, we're done. | 4826 // If there are no actual arguments, we're done. |
| 4818 Label done; | 4827 Label done; |
| 4819 __ cmp(r1, Operand(0, RelocInfo::NONE)); | 4828 __ cmp(r1, Operand(0, RelocInfo::NONE)); |
| 4820 __ b(eq, &done); | 4829 __ b(eq, &done); |
| 4821 | 4830 |
| 4822 // Get the parameters pointer from the stack. | 4831 // Get the parameters pointer from the stack. |
| 4823 __ ldr(r2, MemOperand(sp, 1 * kPointerSize)); | 4832 __ ldr(r2, MemOperand(sp, 1 * kPointerSize)); |
| 4824 | 4833 |
| 4825 // Setup the elements pointer in the allocated arguments object and | 4834 // Setup the elements pointer in the allocated arguments object and |
| 4826 // initialize the header in the elements fixed array. | 4835 // initialize the header in the elements fixed array. |
| 4827 __ add(r4, r0, Operand(Heap::kArgumentsObjectSize)); | 4836 __ add(r4, r0, Operand(GetArgumentsObjectSize())); |
| 4828 __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); | 4837 __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 4829 __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex); | 4838 __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex); |
| 4830 __ str(r3, FieldMemOperand(r4, FixedArray::kMapOffset)); | 4839 __ str(r3, FieldMemOperand(r4, FixedArray::kMapOffset)); |
| 4831 __ str(r1, FieldMemOperand(r4, FixedArray::kLengthOffset)); | 4840 __ str(r1, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
| 4832 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); // Untag the length for the loop. | 4841 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); // Untag the length for the loop. |
| 4833 | 4842 |
| 4834 // Copy the fixed array slots. | 4843 // Copy the fixed array slots. |
| 4835 Label loop; | 4844 Label loop; |
| 4836 // Setup r4 to point to the first array slot. | 4845 // Setup r4 to point to the first array slot. |
| 4837 __ add(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 4846 __ add(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
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| 6813 __ str(pc, MemOperand(sp, 0)); | 6822 __ str(pc, MemOperand(sp, 0)); |
| 6814 __ Jump(target); // Call the C++ function. | 6823 __ Jump(target); // Call the C++ function. |
| 6815 } | 6824 } |
| 6816 | 6825 |
| 6817 | 6826 |
| 6818 #undef __ | 6827 #undef __ |
| 6819 | 6828 |
| 6820 } } // namespace v8::internal | 6829 } } // namespace v8::internal |
| 6821 | 6830 |
| 6822 #endif // V8_TARGET_ARCH_ARM | 6831 #endif // V8_TARGET_ARCH_ARM |
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