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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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| 4786 | 4790 |
| 4787 // Try the new space allocation. Start out with computing the size | 4791 // Try the new space allocation. Start out with computing the size |
| 4788 // of the arguments object and the elements array in words. | 4792 // of the arguments object and the elements array in words. |
| 4789 Label add_arguments_object; | 4793 Label add_arguments_object; |
| 4790 __ bind(&try_allocate); | 4794 __ bind(&try_allocate); |
| 4791 __ cmp(r1, Operand(0, RelocInfo::NONE)); | 4795 __ cmp(r1, Operand(0, RelocInfo::NONE)); |
| 4792 __ b(eq, &add_arguments_object); | 4796 __ b(eq, &add_arguments_object); |
| 4793 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); | 4797 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); |
| 4794 __ add(r1, r1, Operand(FixedArray::kHeaderSize / kPointerSize)); | 4798 __ add(r1, r1, Operand(FixedArray::kHeaderSize / kPointerSize)); |
| 4795 __ bind(&add_arguments_object); | 4799 __ bind(&add_arguments_object); |
| 4796 __ add(r1, r1, Operand(Heap::kArgumentsObjectSize / kPointerSize)); | 4800 __ add(r1, r1, Operand(GetArgumentsObjectSize() / kPointerSize)); |
| 4797 | 4801 |
| 4798 // Do the allocation of both objects in one go. | 4802 // Do the allocation of both objects in one go. |
| 4799 __ AllocateInNewSpace( | 4803 __ AllocateInNewSpace( |
| 4800 r1, | 4804 r1, |
| 4801 r0, | 4805 r0, |
| 4802 r2, | 4806 r2, |
| 4803 r3, | 4807 r3, |
| 4804 &runtime, | 4808 &runtime, |
| 4805 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); | 4809 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); |
| 4806 | 4810 |
| 4807 // Get the arguments boilerplate from the current (global) context. | 4811 // Get the arguments boilerplate from the current (global) context. |
| 4808 int offset = Context::SlotOffset(Context::ARGUMENTS_BOILERPLATE_INDEX); | |
| 4809 __ ldr(r4, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); | 4812 __ ldr(r4, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 4810 __ ldr(r4, FieldMemOperand(r4, GlobalObject::kGlobalContextOffset)); | 4813 __ ldr(r4, FieldMemOperand(r4, GlobalObject::kGlobalContextOffset)); |
| 4811 __ ldr(r4, MemOperand(r4, offset)); | 4814 __ ldr(r4, MemOperand(r4, |
| 4815 Context::SlotOffset(GetArgumentsBoilerplateIndex()))); |
| 4812 | 4816 |
| 4813 // Copy the JS object part. | 4817 // Copy the JS object part. |
| 4814 __ CopyFields(r0, r4, r3.bit(), JSObject::kHeaderSize / kPointerSize); | 4818 __ CopyFields(r0, r4, r3.bit(), JSObject::kHeaderSize / kPointerSize); |
| 4815 | 4819 |
| 4816 // Setup the callee in-object property. | 4820 if (type_ == NEW_NON_STRICT) { |
| 4817 STATIC_ASSERT(Heap::arguments_callee_index == 0); | 4821 // Setup the callee in-object property. |
| 4818 __ ldr(r3, MemOperand(sp, 2 * kPointerSize)); | 4822 STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1); |
| 4819 __ str(r3, FieldMemOperand(r0, JSObject::kHeaderSize)); | 4823 __ ldr(r3, MemOperand(sp, 2 * kPointerSize)); |
| 4824 const int kCalleeOffset = JSObject::kHeaderSize + |
| 4825 Heap::kArgumentsCalleeIndex * kPointerSize; |
| 4826 __ str(r3, FieldMemOperand(r0, kCalleeOffset)); |
| 4827 } |
| 4820 | 4828 |
| 4821 // Get the length (smi tagged) and set that as an in-object property too. | 4829 // Get the length (smi tagged) and set that as an in-object property too. |
| 4822 STATIC_ASSERT(Heap::arguments_length_index == 1); | 4830 STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
| 4823 __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); | 4831 __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); |
| 4824 __ str(r1, FieldMemOperand(r0, JSObject::kHeaderSize + kPointerSize)); | 4832 __ str(r1, FieldMemOperand(r0, JSObject::kHeaderSize + |
| 4833 Heap::kArgumentsLengthIndex * kPointerSize)); |
| 4825 | 4834 |
| 4826 // If there are no actual arguments, we're done. | 4835 // If there are no actual arguments, we're done. |
| 4827 Label done; | 4836 Label done; |
| 4828 __ cmp(r1, Operand(0, RelocInfo::NONE)); | 4837 __ cmp(r1, Operand(0, RelocInfo::NONE)); |
| 4829 __ b(eq, &done); | 4838 __ b(eq, &done); |
| 4830 | 4839 |
| 4831 // Get the parameters pointer from the stack. | 4840 // Get the parameters pointer from the stack. |
| 4832 __ ldr(r2, MemOperand(sp, 1 * kPointerSize)); | 4841 __ ldr(r2, MemOperand(sp, 1 * kPointerSize)); |
| 4833 | 4842 |
| 4834 // Setup the elements pointer in the allocated arguments object and | 4843 // Setup the elements pointer in the allocated arguments object and |
| 4835 // initialize the header in the elements fixed array. | 4844 // initialize the header in the elements fixed array. |
| 4836 __ add(r4, r0, Operand(Heap::kArgumentsObjectSize)); | 4845 __ add(r4, r0, Operand(GetArgumentsObjectSize())); |
| 4837 __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); | 4846 __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 4838 __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex); | 4847 __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex); |
| 4839 __ str(r3, FieldMemOperand(r4, FixedArray::kMapOffset)); | 4848 __ str(r3, FieldMemOperand(r4, FixedArray::kMapOffset)); |
| 4840 __ str(r1, FieldMemOperand(r4, FixedArray::kLengthOffset)); | 4849 __ str(r1, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
| 4841 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); // Untag the length for the loop. | 4850 __ mov(r1, Operand(r1, LSR, kSmiTagSize)); // Untag the length for the loop. |
| 4842 | 4851 |
| 4843 // Copy the fixed array slots. | 4852 // Copy the fixed array slots. |
| 4844 Label loop; | 4853 Label loop; |
| 4845 // Setup r4 to point to the first array slot. | 4854 // Setup r4 to point to the first array slot. |
| 4846 __ add(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 4855 __ add(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
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| 6825 __ str(pc, MemOperand(sp, 0)); | 6834 __ str(pc, MemOperand(sp, 0)); |
| 6826 __ Jump(target); // Call the C++ function. | 6835 __ Jump(target); // Call the C++ function. |
| 6827 } | 6836 } |
| 6828 | 6837 |
| 6829 | 6838 |
| 6830 #undef __ | 6839 #undef __ |
| 6831 | 6840 |
| 6832 } } // namespace v8::internal | 6841 } } // namespace v8::internal |
| 6833 | 6842 |
| 6834 #endif // V8_TARGET_ARCH_ARM | 6843 #endif // V8_TARGET_ARCH_ARM |
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