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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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2075 map->set_instance_type(instance_type); | 2075 map->set_instance_type(instance_type); |
2076 map->set_visitor_id( | 2076 map->set_visitor_id( |
2077 StaticVisitorBase::GetVisitorId(instance_type, instance_size)); | 2077 StaticVisitorBase::GetVisitorId(instance_type, instance_size)); |
2078 map->set_prototype(null_value(), SKIP_WRITE_BARRIER); | 2078 map->set_prototype(null_value(), SKIP_WRITE_BARRIER); |
2079 map->set_constructor(null_value(), SKIP_WRITE_BARRIER); | 2079 map->set_constructor(null_value(), SKIP_WRITE_BARRIER); |
2080 map->set_instance_size(instance_size); | 2080 map->set_instance_size(instance_size); |
2081 map->set_inobject_properties(0); | 2081 map->set_inobject_properties(0); |
2082 map->set_pre_allocated_property_fields(0); | 2082 map->set_pre_allocated_property_fields(0); |
2083 map->init_instance_descriptors(); | 2083 map->init_instance_descriptors(); |
2084 map->set_code_cache(empty_fixed_array(), SKIP_WRITE_BARRIER); | 2084 map->set_code_cache(empty_fixed_array(), SKIP_WRITE_BARRIER); |
2085 map->init_prototype_transitions(undefined_value()); | 2085 map->init_back_pointer(undefined_value()); |
2086 map->set_unused_property_fields(0); | 2086 map->set_unused_property_fields(0); |
2087 map->set_bit_field(0); | 2087 map->set_bit_field(0); |
2088 map->set_bit_field2(1 << Map::kIsExtensible); | 2088 map->set_bit_field2(1 << Map::kIsExtensible); |
2089 map->set_elements_kind(elements_kind); | 2089 map->set_elements_kind(elements_kind); |
2090 | 2090 |
2091 // If the map object is aligned fill the padding area with Smi 0 objects. | 2091 // If the map object is aligned fill the padding area with Smi 0 objects. |
2092 if (Map::kPadStart < Map::kSize) { | 2092 if (Map::kPadStart < Map::kSize) { |
2093 memset(reinterpret_cast<byte*>(map) + Map::kPadStart - kHeapObjectTag, | 2093 memset(reinterpret_cast<byte*>(map) + Map::kPadStart - kHeapObjectTag, |
2094 0, | 2094 0, |
2095 Map::kSize - Map::kPadStart); | 2095 Map::kSize - Map::kPadStart); |
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2214 | 2214 |
2215 // Allocate the empty descriptor array. | 2215 // Allocate the empty descriptor array. |
2216 { MaybeObject* maybe_obj = AllocateEmptyFixedArray(); | 2216 { MaybeObject* maybe_obj = AllocateEmptyFixedArray(); |
2217 if (!maybe_obj->ToObject(&obj)) return false; | 2217 if (!maybe_obj->ToObject(&obj)) return false; |
2218 } | 2218 } |
2219 set_empty_descriptor_array(DescriptorArray::cast(obj)); | 2219 set_empty_descriptor_array(DescriptorArray::cast(obj)); |
2220 | 2220 |
2221 // Fix the instance_descriptors for the existing maps. | 2221 // Fix the instance_descriptors for the existing maps. |
2222 meta_map()->init_instance_descriptors(); | 2222 meta_map()->init_instance_descriptors(); |
2223 meta_map()->set_code_cache(empty_fixed_array()); | 2223 meta_map()->set_code_cache(empty_fixed_array()); |
2224 meta_map()->init_prototype_transitions(undefined_value()); | 2224 meta_map()->init_back_pointer(undefined_value()); |
2225 | 2225 |
2226 fixed_array_map()->init_instance_descriptors(); | 2226 fixed_array_map()->init_instance_descriptors(); |
2227 fixed_array_map()->set_code_cache(empty_fixed_array()); | 2227 fixed_array_map()->set_code_cache(empty_fixed_array()); |
2228 fixed_array_map()->init_prototype_transitions(undefined_value()); | 2228 fixed_array_map()->init_back_pointer(undefined_value()); |
2229 | 2229 |
2230 oddball_map()->init_instance_descriptors(); | 2230 oddball_map()->init_instance_descriptors(); |
2231 oddball_map()->set_code_cache(empty_fixed_array()); | 2231 oddball_map()->set_code_cache(empty_fixed_array()); |
2232 oddball_map()->init_prototype_transitions(undefined_value()); | 2232 oddball_map()->init_back_pointer(undefined_value()); |
2233 | 2233 |
2234 // Fix prototype object for existing maps. | 2234 // Fix prototype object for existing maps. |
2235 meta_map()->set_prototype(null_value()); | 2235 meta_map()->set_prototype(null_value()); |
2236 meta_map()->set_constructor(null_value()); | 2236 meta_map()->set_constructor(null_value()); |
2237 | 2237 |
2238 fixed_array_map()->set_prototype(null_value()); | 2238 fixed_array_map()->set_prototype(null_value()); |
2239 fixed_array_map()->set_constructor(null_value()); | 2239 fixed_array_map()->set_constructor(null_value()); |
2240 | 2240 |
2241 oddball_map()->set_prototype(null_value()); | 2241 oddball_map()->set_prototype(null_value()); |
2242 oddball_map()->set_constructor(null_value()); | 2242 oddball_map()->set_constructor(null_value()); |
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7221 } else { | 7221 } else { |
7222 p ^= 0x1d1ed & (Page::kPageSize - 1); // I died. | 7222 p ^= 0x1d1ed & (Page::kPageSize - 1); // I died. |
7223 } | 7223 } |
7224 remembered_unmapped_pages_[remembered_unmapped_pages_index_] = | 7224 remembered_unmapped_pages_[remembered_unmapped_pages_index_] = |
7225 reinterpret_cast<Address>(p); | 7225 reinterpret_cast<Address>(p); |
7226 remembered_unmapped_pages_index_++; | 7226 remembered_unmapped_pages_index_++; |
7227 remembered_unmapped_pages_index_ %= kRememberedUnmappedPages; | 7227 remembered_unmapped_pages_index_ %= kRememberedUnmappedPages; |
7228 } | 7228 } |
7229 | 7229 |
7230 } } // namespace v8::internal | 7230 } } // namespace v8::internal |
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