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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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73 return result; | 73 return result; |
74 } | 74 } |
75 | 75 |
76 | 76 |
77 void IC::SetTargetAtAddress(Address address, Code* target) { | 77 void IC::SetTargetAtAddress(Address address, Code* target) { |
78 ASSERT(target->is_inline_cache_stub()); | 78 ASSERT(target->is_inline_cache_stub()); |
79 Assembler::set_target_address_at(address, target->instruction_start()); | 79 Assembler::set_target_address_at(address, target->instruction_start()); |
80 } | 80 } |
81 | 81 |
82 | 82 |
83 Map* IC::GetCodeCacheMapForObject(Object* object) { | 83 InlineCacheHolderFlag IC::GetCodeCacheForObject(Object* object, |
84 if (object->IsJSObject()) return JSObject::cast(object)->map(); | 84 JSObject* holder) { |
| 85 if (object->IsJSObject()) { |
| 86 return GetCodeCacheForObject(JSObject::cast(object), holder); |
| 87 } |
85 // If the object is a value, we use the prototype map for the cache. | 88 // If the object is a value, we use the prototype map for the cache. |
86 ASSERT(object->IsString() || object->IsNumber() || object->IsBoolean()); | 89 ASSERT(object->IsString() || object->IsNumber() || object->IsBoolean()); |
87 return JSObject::cast(object->GetPrototype())->map(); | 90 return PROTOTYPE_MAP; |
| 91 } |
| 92 |
| 93 |
| 94 InlineCacheHolderFlag IC::GetCodeCacheForObject(JSObject* object, |
| 95 JSObject* holder) { |
| 96 // Fast-properties and global objects store stubs in their own maps. |
| 97 // Slow properties objects use prototype's map (unless the property is its own |
| 98 // when holder == object). It works because slow properties objects having |
| 99 // the same prototype (or a prototype with the same map) and not having |
| 100 // the property are interchangeable for such a stub. |
| 101 if (holder != object && |
| 102 !object->HasFastProperties() && |
| 103 !object->IsJSGlobalProxy() && |
| 104 !object->IsJSGlobalObject()) { |
| 105 return PROTOTYPE_MAP; |
| 106 } |
| 107 return OWN_MAP; |
| 108 } |
| 109 |
| 110 |
| 111 Map* IC::GetCodeCacheMap(Object* object, InlineCacheHolderFlag holder) { |
| 112 Object* map_owner = (holder == OWN_MAP ? object : object->GetPrototype()); |
| 113 ASSERT(map_owner->IsJSObject()); |
| 114 return JSObject::cast(map_owner)->map(); |
88 } | 115 } |
89 | 116 |
90 | 117 |
91 } } // namespace v8::internal | 118 } } // namespace v8::internal |
92 | 119 |
93 #endif // V8_IC_INL_H_ | 120 #endif // V8_IC_INL_H_ |
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