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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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3551 __ lea(ebx, Operand(ebx, times_2, kParameterMapHeaderSize)); | 3551 __ lea(ebx, Operand(ebx, times_2, kParameterMapHeaderSize)); |
3552 __ bind(&no_parameter_map); | 3552 __ bind(&no_parameter_map); |
3553 | 3553 |
3554 // 2. Backing store. | 3554 // 2. Backing store. |
3555 __ lea(ebx, Operand(ebx, ecx, times_2, FixedArray::kHeaderSize)); | 3555 __ lea(ebx, Operand(ebx, ecx, times_2, FixedArray::kHeaderSize)); |
3556 | 3556 |
3557 // 3. Arguments object. | 3557 // 3. Arguments object. |
3558 __ add(ebx, Immediate(Heap::kArgumentsObjectSize)); | 3558 __ add(ebx, Immediate(Heap::kArgumentsObjectSize)); |
3559 | 3559 |
3560 // Do the allocation of all three objects in one go. | 3560 // Do the allocation of all three objects in one go. |
3561 __ AllocateInNewSpace(ebx, eax, edx, edi, &runtime, TAG_OBJECT); | 3561 __ Allocate(ebx, eax, edx, edi, &runtime, TAG_OBJECT); |
3562 | 3562 |
3563 // eax = address of new object(s) (tagged) | 3563 // eax = address of new object(s) (tagged) |
3564 // ecx = argument count (tagged) | 3564 // ecx = argument count (tagged) |
3565 // esp[0] = mapped parameter count (tagged) | 3565 // esp[0] = mapped parameter count (tagged) |
3566 // esp[8] = parameter count (tagged) | 3566 // esp[8] = parameter count (tagged) |
3567 // esp[12] = address of receiver argument | 3567 // esp[12] = address of receiver argument |
3568 // Get the arguments boilerplate from the current native context into edi. | 3568 // Get the arguments boilerplate from the current native context into edi. |
3569 Label has_mapped_parameters, copy; | 3569 Label has_mapped_parameters, copy; |
3570 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); | 3570 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
3571 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); | 3571 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); |
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3749 // the arguments object and the elements array. | 3749 // the arguments object and the elements array. |
3750 Label add_arguments_object; | 3750 Label add_arguments_object; |
3751 __ bind(&try_allocate); | 3751 __ bind(&try_allocate); |
3752 __ test(ecx, ecx); | 3752 __ test(ecx, ecx); |
3753 __ j(zero, &add_arguments_object, Label::kNear); | 3753 __ j(zero, &add_arguments_object, Label::kNear); |
3754 __ lea(ecx, Operand(ecx, times_2, FixedArray::kHeaderSize)); | 3754 __ lea(ecx, Operand(ecx, times_2, FixedArray::kHeaderSize)); |
3755 __ bind(&add_arguments_object); | 3755 __ bind(&add_arguments_object); |
3756 __ add(ecx, Immediate(Heap::kArgumentsObjectSizeStrict)); | 3756 __ add(ecx, Immediate(Heap::kArgumentsObjectSizeStrict)); |
3757 | 3757 |
3758 // Do the allocation of both objects in one go. | 3758 // Do the allocation of both objects in one go. |
3759 __ AllocateInNewSpace(ecx, eax, edx, ebx, &runtime, TAG_OBJECT); | 3759 __ Allocate(ecx, eax, edx, ebx, &runtime, TAG_OBJECT); |
3760 | 3760 |
3761 // Get the arguments boilerplate from the current native context. | 3761 // Get the arguments boilerplate from the current native context. |
3762 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); | 3762 __ mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
3763 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); | 3763 __ mov(edi, FieldOperand(edi, GlobalObject::kNativeContextOffset)); |
3764 const int offset = | 3764 const int offset = |
3765 Context::SlotOffset(Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX); | 3765 Context::SlotOffset(Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX); |
3766 __ mov(edi, Operand(edi, offset)); | 3766 __ mov(edi, Operand(edi, offset)); |
3767 | 3767 |
3768 // Copy the JS object part. | 3768 // Copy the JS object part. |
3769 for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { | 3769 for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { |
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4273 __ mov(ebx, Operand(esp, kPointerSize * 3)); | 4273 __ mov(ebx, Operand(esp, kPointerSize * 3)); |
4274 __ JumpIfNotSmi(ebx, &slowcase); | 4274 __ JumpIfNotSmi(ebx, &slowcase); |
4275 __ cmp(ebx, Immediate(Smi::FromInt(kMaxInlineLength))); | 4275 __ cmp(ebx, Immediate(Smi::FromInt(kMaxInlineLength))); |
4276 __ j(above, &slowcase); | 4276 __ j(above, &slowcase); |
4277 // Smi-tagging is equivalent to multiplying by 2. | 4277 // Smi-tagging is equivalent to multiplying by 2. |
4278 STATIC_ASSERT(kSmiTag == 0); | 4278 STATIC_ASSERT(kSmiTag == 0); |
4279 STATIC_ASSERT(kSmiTagSize == 1); | 4279 STATIC_ASSERT(kSmiTagSize == 1); |
4280 // Allocate RegExpResult followed by FixedArray with size in ebx. | 4280 // Allocate RegExpResult followed by FixedArray with size in ebx. |
4281 // JSArray: [Map][empty properties][Elements][Length-smi][index][input] | 4281 // JSArray: [Map][empty properties][Elements][Length-smi][index][input] |
4282 // Elements: [Map][Length][..elements..] | 4282 // Elements: [Map][Length][..elements..] |
4283 __ AllocateInNewSpace(JSRegExpResult::kSize + FixedArray::kHeaderSize, | 4283 __ Allocate(JSRegExpResult::kSize + FixedArray::kHeaderSize, |
4284 times_pointer_size, | 4284 times_pointer_size, |
4285 ebx, // In: Number of elements as a smi | 4285 ebx, // In: Number of elements as a smi |
4286 REGISTER_VALUE_IS_SMI, | 4286 REGISTER_VALUE_IS_SMI, |
4287 eax, // Out: Start of allocation (tagged). | 4287 eax, // Out: Start of allocation (tagged). |
4288 ecx, // Out: End of allocation. | 4288 ecx, // Out: End of allocation. |
4289 edx, // Scratch register | 4289 edx, // Scratch register |
4290 &slowcase, | 4290 &slowcase, |
4291 TAG_OBJECT); | 4291 TAG_OBJECT); |
4292 // eax: Start of allocated area, object-tagged. | 4292 // eax: Start of allocated area, object-tagged. |
4293 | 4293 |
4294 // Set JSArray map to global.regexp_result_map(). | 4294 // Set JSArray map to global.regexp_result_map(). |
4295 // Set empty properties FixedArray. | 4295 // Set empty properties FixedArray. |
4296 // Set elements to point to FixedArray allocated right after the JSArray. | 4296 // Set elements to point to FixedArray allocated right after the JSArray. |
4297 // Interleave operations for better latency. | 4297 // Interleave operations for better latency. |
4298 __ mov(edx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); | 4298 __ mov(edx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); |
4299 Factory* factory = masm->isolate()->factory(); | 4299 Factory* factory = masm->isolate()->factory(); |
4300 __ mov(ecx, Immediate(factory->empty_fixed_array())); | 4300 __ mov(ecx, Immediate(factory->empty_fixed_array())); |
4301 __ lea(ebx, Operand(eax, JSRegExpResult::kSize)); | 4301 __ lea(ebx, Operand(eax, JSRegExpResult::kSize)); |
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7860 // Restore ecx. | 7860 // Restore ecx. |
7861 __ pop(ecx); | 7861 __ pop(ecx); |
7862 __ ret(0); | 7862 __ ret(0); |
7863 } | 7863 } |
7864 | 7864 |
7865 #undef __ | 7865 #undef __ |
7866 | 7866 |
7867 } } // namespace v8::internal | 7867 } } // namespace v8::internal |
7868 | 7868 |
7869 #endif // V8_TARGET_ARCH_IA32 | 7869 #endif // V8_TARGET_ARCH_IA32 |
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