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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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| 3125 // top forward. | 3125 // top forward. |
| 3126 // ebx: initial map | 3126 // ebx: initial map |
| 3127 ASSERT(function->has_initial_map()); | 3127 ASSERT(function->has_initial_map()); |
| 3128 int instance_size = function->initial_map()->instance_size(); | 3128 int instance_size = function->initial_map()->instance_size(); |
| 3129 #ifdef DEBUG | 3129 #ifdef DEBUG |
| 3130 __ movzx_b(ecx, FieldOperand(ebx, Map::kInstanceSizeOffset)); | 3130 __ movzx_b(ecx, FieldOperand(ebx, Map::kInstanceSizeOffset)); |
| 3131 __ shl(ecx, kPointerSizeLog2); | 3131 __ shl(ecx, kPointerSizeLog2); |
| 3132 __ cmp(ecx, Immediate(instance_size)); | 3132 __ cmp(ecx, Immediate(instance_size)); |
| 3133 __ Check(equal, "Instance size of initial map changed."); | 3133 __ Check(equal, "Instance size of initial map changed."); |
| 3134 #endif | 3134 #endif |
| 3135 __ AllocateInNewSpace(instance_size, edx, ecx, no_reg, | 3135 __ Allocate(instance_size, edx, ecx, no_reg, &generic_stub_call, |
| 3136 &generic_stub_call, NO_ALLOCATION_FLAGS); | 3136 NO_ALLOCATION_FLAGS, MacroAssembler::NEW_SPACE); |
| 3137 | 3137 |
| 3138 // Allocated the JSObject, now initialize the fields and add the heap tag. | 3138 // Allocated the JSObject, now initialize the fields and add the heap tag. |
| 3139 // ebx: initial map | 3139 // ebx: initial map |
| 3140 // edx: JSObject (untagged) | 3140 // edx: JSObject (untagged) |
| 3141 __ mov(Operand(edx, JSObject::kMapOffset), ebx); | 3141 __ mov(Operand(edx, JSObject::kMapOffset), ebx); |
| 3142 __ mov(ebx, factory()->empty_fixed_array()); | 3142 __ mov(ebx, factory()->empty_fixed_array()); |
| 3143 __ mov(Operand(edx, JSObject::kPropertiesOffset), ebx); | 3143 __ mov(Operand(edx, JSObject::kPropertiesOffset), ebx); |
| 3144 __ mov(Operand(edx, JSObject::kElementsOffset), ebx); | 3144 __ mov(Operand(edx, JSObject::kElementsOffset), ebx); |
| 3145 | 3145 |
| 3146 // Push the allocated object to the stack. This is the object that will be | 3146 // Push the allocated object to the stack. This is the object that will be |
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| 3600 // compare. | 3600 // compare. |
| 3601 __ j(not_equal, &miss_force_generic); | 3601 __ j(not_equal, &miss_force_generic); |
| 3602 | 3602 |
| 3603 // Check for the empty array, and preallocate a small backing store if | 3603 // Check for the empty array, and preallocate a small backing store if |
| 3604 // possible. | 3604 // possible. |
| 3605 __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); | 3605 __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); |
| 3606 __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); | 3606 __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); |
| 3607 __ j(not_equal, &check_capacity); | 3607 __ j(not_equal, &check_capacity); |
| 3608 | 3608 |
| 3609 int size = FixedArray::SizeFor(JSArray::kPreallocatedArrayElements); | 3609 int size = FixedArray::SizeFor(JSArray::kPreallocatedArrayElements); |
| 3610 __ AllocateInNewSpace(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT); | 3610 __ Allocate(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT, |
| 3611 MacroAssembler::NEW_SPACE); |
| 3611 // Restore the key, which is known to be the array length. | 3612 // Restore the key, which is known to be the array length. |
| 3612 | 3613 |
| 3613 // eax: value | 3614 // eax: value |
| 3614 // ecx: key | 3615 // ecx: key |
| 3615 // edx: receiver | 3616 // edx: receiver |
| 3616 // edi: elements | 3617 // edi: elements |
| 3617 // Make sure that the backing store can hold additional elements. | 3618 // Make sure that the backing store can hold additional elements. |
| 3618 __ mov(FieldOperand(edi, JSObject::kMapOffset), | 3619 __ mov(FieldOperand(edi, JSObject::kMapOffset), |
| 3619 Immediate(masm->isolate()->factory()->fixed_array_map())); | 3620 Immediate(masm->isolate()->factory()->fixed_array_map())); |
| 3620 __ mov(FieldOperand(edi, FixedArray::kLengthOffset), | 3621 __ mov(FieldOperand(edi, FixedArray::kLengthOffset), |
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| 3736 __ j(not_equal, &transition_elements_kind); | 3737 __ j(not_equal, &transition_elements_kind); |
| 3737 __ bind(&value_is_smi); | 3738 __ bind(&value_is_smi); |
| 3738 | 3739 |
| 3739 // Check for the empty array, and preallocate a small backing store if | 3740 // Check for the empty array, and preallocate a small backing store if |
| 3740 // possible. | 3741 // possible. |
| 3741 __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); | 3742 __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); |
| 3742 __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); | 3743 __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); |
| 3743 __ j(not_equal, &check_capacity); | 3744 __ j(not_equal, &check_capacity); |
| 3744 | 3745 |
| 3745 int size = FixedDoubleArray::SizeFor(JSArray::kPreallocatedArrayElements); | 3746 int size = FixedDoubleArray::SizeFor(JSArray::kPreallocatedArrayElements); |
| 3746 __ AllocateInNewSpace(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT); | 3747 __ Allocate(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT, |
| 3748 MacroAssembler::NEW_SPACE); |
| 3747 | 3749 |
| 3748 // Restore the key, which is known to be the array length. | 3750 // Restore the key, which is known to be the array length. |
| 3749 __ mov(ecx, Immediate(0)); | 3751 __ mov(ecx, Immediate(0)); |
| 3750 | 3752 |
| 3751 // eax: value | 3753 // eax: value |
| 3752 // ecx: key | 3754 // ecx: key |
| 3753 // edx: receiver | 3755 // edx: receiver |
| 3754 // edi: elements | 3756 // edi: elements |
| 3755 // Initialize the new FixedDoubleArray. | 3757 // Initialize the new FixedDoubleArray. |
| 3756 __ mov(FieldOperand(edi, JSObject::kMapOffset), | 3758 __ mov(FieldOperand(edi, JSObject::kMapOffset), |
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| 3802 __ jmp(ic_slow, RelocInfo::CODE_TARGET); | 3804 __ jmp(ic_slow, RelocInfo::CODE_TARGET); |
| 3803 } | 3805 } |
| 3804 } | 3806 } |
| 3805 | 3807 |
| 3806 | 3808 |
| 3807 #undef __ | 3809 #undef __ |
| 3808 | 3810 |
| 3809 } } // namespace v8::internal | 3811 } } // namespace v8::internal |
| 3810 | 3812 |
| 3811 #endif // V8_TARGET_ARCH_IA32 | 3813 #endif // V8_TARGET_ARCH_IA32 |
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