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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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3570 __ lea(ebx, Operand(ebx, times_2, kParameterMapHeaderSize)); | 3570 __ lea(ebx, Operand(ebx, times_2, kParameterMapHeaderSize)); |
3571 __ bind(&no_parameter_map); | 3571 __ bind(&no_parameter_map); |
3572 | 3572 |
3573 // 2. Backing store. | 3573 // 2. Backing store. |
3574 __ lea(ebx, Operand(ebx, ecx, times_2, FixedArray::kHeaderSize)); | 3574 __ lea(ebx, Operand(ebx, ecx, times_2, FixedArray::kHeaderSize)); |
3575 | 3575 |
3576 // 3. Arguments object. | 3576 // 3. Arguments object. |
3577 __ add(ebx, Immediate(Heap::kArgumentsObjectSize)); | 3577 __ add(ebx, Immediate(Heap::kArgumentsObjectSize)); |
3578 | 3578 |
3579 // Do the allocation of all three objects in one go. | 3579 // Do the allocation of all three objects in one go. |
3580 __ AllocateInNewSpace(ebx, eax, edx, edi, &runtime, TAG_OBJECT); | 3580 __ Allocate(ebx, eax, edx, edi, &runtime, TAG_OBJECT); |
3581 | 3581 |
3582 // eax = address of new object(s) (tagged) | 3582 // eax = address of new object(s) (tagged) |
3583 // ecx = argument count (tagged) | 3583 // ecx = argument count (tagged) |
3584 // esp[0] = mapped parameter count (tagged) | 3584 // esp[0] = mapped parameter count (tagged) |
3585 // esp[8] = parameter count (tagged) | 3585 // esp[8] = parameter count (tagged) |
3586 // esp[12] = address of receiver argument | 3586 // esp[12] = address of receiver argument |
3587 // Get the arguments boilerplate from the current native context into edi. | 3587 // Get the arguments boilerplate from the current native context into edi. |
3588 Label has_mapped_parameters, copy; | 3588 Label has_mapped_parameters, copy; |
3589 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); | 3589 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
3590 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); | 3590 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); |
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3768 // the arguments object and the elements array. | 3768 // the arguments object and the elements array. |
3769 Label add_arguments_object; | 3769 Label add_arguments_object; |
3770 __ bind(&try_allocate); | 3770 __ bind(&try_allocate); |
3771 __ test(ecx, ecx); | 3771 __ test(ecx, ecx); |
3772 __ j(zero, &add_arguments_object, Label::kNear); | 3772 __ j(zero, &add_arguments_object, Label::kNear); |
3773 __ lea(ecx, Operand(ecx, times_2, FixedArray::kHeaderSize)); | 3773 __ lea(ecx, Operand(ecx, times_2, FixedArray::kHeaderSize)); |
3774 __ bind(&add_arguments_object); | 3774 __ bind(&add_arguments_object); |
3775 __ add(ecx, Immediate(Heap::kArgumentsObjectSizeStrict)); | 3775 __ add(ecx, Immediate(Heap::kArgumentsObjectSizeStrict)); |
3776 | 3776 |
3777 // Do the allocation of both objects in one go. | 3777 // Do the allocation of both objects in one go. |
3778 __ AllocateInNewSpace(ecx, eax, edx, ebx, &runtime, TAG_OBJECT); | 3778 __ Allocate(ecx, eax, edx, ebx, &runtime, TAG_OBJECT); |
3779 | 3779 |
3780 // Get the arguments boilerplate from the current native context. | 3780 // Get the arguments boilerplate from the current native context. |
3781 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); | 3781 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
3782 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); | 3782 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); |
3783 const int offset = | 3783 const int offset = |
3784 Context::SlotOffset(Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX); | 3784 Context::SlotOffset(Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX); |
3785 __ mov(edi, Operand(edi, offset)); | 3785 __ mov(edi, Operand(edi, offset)); |
3786 | 3786 |
3787 // Copy the JS object part. | 3787 // Copy the JS object part. |
3788 for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { | 3788 for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { |
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4292 __ mov(ebx, Operand(esp, kPointerSize * 3)); | 4292 __ mov(ebx, Operand(esp, kPointerSize * 3)); |
4293 __ JumpIfNotSmi(ebx, &slowcase); | 4293 __ JumpIfNotSmi(ebx, &slowcase); |
4294 __ cmp(ebx, Immediate(Smi::FromInt(kMaxInlineLength))); | 4294 __ cmp(ebx, Immediate(Smi::FromInt(kMaxInlineLength))); |
4295 __ j(above, &slowcase); | 4295 __ j(above, &slowcase); |
4296 // Smi-tagging is equivalent to multiplying by 2. | 4296 // Smi-tagging is equivalent to multiplying by 2. |
4297 STATIC_ASSERT(kSmiTag == 0); | 4297 STATIC_ASSERT(kSmiTag == 0); |
4298 STATIC_ASSERT(kSmiTagSize == 1); | 4298 STATIC_ASSERT(kSmiTagSize == 1); |
4299 // Allocate RegExpResult followed by FixedArray with size in ebx. | 4299 // Allocate RegExpResult followed by FixedArray with size in ebx. |
4300 // JSArray: [Map][empty properties][Elements][Length-smi][index][input] | 4300 // JSArray: [Map][empty properties][Elements][Length-smi][index][input] |
4301 // Elements: [Map][Length][..elements..] | 4301 // Elements: [Map][Length][..elements..] |
4302 __ AllocateInNewSpace(JSRegExpResult::kSize + FixedArray::kHeaderSize, | 4302 __ Allocate(JSRegExpResult::kSize + FixedArray::kHeaderSize, |
4303 times_pointer_size, | 4303 times_pointer_size, |
4304 ebx, // In: Number of elements as a smi | 4304 ebx, // In: Number of elements as a smi |
4305 REGISTER_VALUE_IS_SMI, | 4305 REGISTER_VALUE_IS_SMI, |
4306 eax, // Out: Start of allocation (tagged). | 4306 eax, // Out: Start of allocation (tagged). |
4307 ecx, // Out: End of allocation. | 4307 ecx, // Out: End of allocation. |
4308 edx, // Scratch register | 4308 edx, // Scratch register |
4309 &slowcase, | 4309 &slowcase, |
4310 TAG_OBJECT); | 4310 TAG_OBJECT); |
4311 // eax: Start of allocated area, object-tagged. | 4311 // eax: Start of allocated area, object-tagged. |
4312 | 4312 |
4313 // Set JSArray map to global.regexp_result_map(). | 4313 // Set JSArray map to global.regexp_result_map(). |
4314 // Set empty properties FixedArray. | 4314 // Set empty properties FixedArray. |
4315 // Set elements to point to FixedArray allocated right after the JSArray. | 4315 // Set elements to point to FixedArray allocated right after the JSArray. |
4316 // Interleave operations for better latency. | 4316 // Interleave operations for better latency. |
4317 __ mov(edx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); | 4317 __ mov(edx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); |
4318 Factory* factory = masm->isolate()->factory(); | 4318 Factory* factory = masm->isolate()->factory(); |
4319 __ mov(ecx, Immediate(factory->empty_fixed_array())); | 4319 __ mov(ecx, Immediate(factory->empty_fixed_array())); |
4320 __ lea(ebx, Operand(eax, JSRegExpResult::kSize)); | 4320 __ lea(ebx, Operand(eax, JSRegExpResult::kSize)); |
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7879 // Restore ecx. | 7879 // Restore ecx. |
7880 __ pop(ecx); | 7880 __ pop(ecx); |
7881 __ ret(0); | 7881 __ ret(0); |
7882 } | 7882 } |
7883 | 7883 |
7884 #undef __ | 7884 #undef __ |
7885 | 7885 |
7886 } } // namespace v8::internal | 7886 } } // namespace v8::internal |
7887 | 7887 |
7888 #endif // V8_TARGET_ARCH_IA32 | 7888 #endif // V8_TARGET_ARCH_IA32 |
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