OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X64 | 7 #if V8_TARGET_ARCH_X64 |
8 | 8 |
9 #include "src/arguments.h" | 9 #include "src/arguments.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
(...skipping 633 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
644 while (!current_map.is_identical_to(holder_map)) { | 644 while (!current_map.is_identical_to(holder_map)) { |
645 ++depth; | 645 ++depth; |
646 | 646 |
647 // Only global objects and objects that do not require access | 647 // Only global objects and objects that do not require access |
648 // checks are allowed in stubs. | 648 // checks are allowed in stubs. |
649 DCHECK(current_map->IsJSGlobalProxyMap() || | 649 DCHECK(current_map->IsJSGlobalProxyMap() || |
650 !current_map->is_access_check_needed()); | 650 !current_map->is_access_check_needed()); |
651 | 651 |
652 prototype = handle(JSObject::cast(current_map->prototype())); | 652 prototype = handle(JSObject::cast(current_map->prototype())); |
653 if (current_map->is_dictionary_map() && | 653 if (current_map->is_dictionary_map() && |
654 !current_map->IsJSGlobalObjectMap() && | 654 !current_map->IsJSGlobalObjectMap()) { |
655 !current_map->IsJSGlobalProxyMap()) { | 655 DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast. |
656 if (!name->IsUniqueName()) { | 656 if (!name->IsUniqueName()) { |
657 DCHECK(name->IsString()); | 657 DCHECK(name->IsString()); |
658 name = factory()->InternalizeString(Handle<String>::cast(name)); | 658 name = factory()->InternalizeString(Handle<String>::cast(name)); |
659 } | 659 } |
660 DCHECK(current.is_null() || | 660 DCHECK(current.is_null() || |
661 current->property_dictionary()->FindEntry(name) == | 661 current->property_dictionary()->FindEntry(name) == |
662 NameDictionary::kNotFound); | 662 NameDictionary::kNotFound); |
663 | 663 |
664 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, | 664 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, |
665 scratch1, scratch2); | 665 scratch1, scratch2); |
(...skipping 12 matching lines...) Expand all Loading... |
678 // Save the map in scratch1 for later. | 678 // Save the map in scratch1 for later. |
679 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); | 679 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
680 } | 680 } |
681 if (depth != 1 || check == CHECK_ALL_MAPS) { | 681 if (depth != 1 || check == CHECK_ALL_MAPS) { |
682 __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK); | 682 __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK); |
683 } | 683 } |
684 | 684 |
685 // Check access rights to the global object. This has to happen after | 685 // Check access rights to the global object. This has to happen after |
686 // the map check so that we know that the object is actually a global | 686 // the map check so that we know that the object is actually a global |
687 // object. | 687 // object. |
| 688 // This allows us to install generated handlers for accesses to the |
| 689 // global proxy (as opposed to using slow ICs). See corresponding code |
| 690 // in LookupForRead(). |
688 if (current_map->IsJSGlobalProxyMap()) { | 691 if (current_map->IsJSGlobalProxyMap()) { |
689 __ CheckAccessGlobalProxy(reg, scratch2, miss); | 692 __ CheckAccessGlobalProxy(reg, scratch2, miss); |
690 } else if (current_map->IsJSGlobalObjectMap()) { | 693 } else if (current_map->IsJSGlobalObjectMap()) { |
691 GenerateCheckPropertyCell( | 694 GenerateCheckPropertyCell( |
692 masm(), Handle<JSGlobalObject>::cast(current), name, | 695 masm(), Handle<JSGlobalObject>::cast(current), name, |
693 scratch2, miss); | 696 scratch2, miss); |
694 } | 697 } |
695 reg = holder_reg; // From now on the object will be in holder_reg. | 698 reg = holder_reg; // From now on the object will be in holder_reg. |
696 | 699 |
697 if (load_prototype_from_map) { | 700 if (load_prototype_from_map) { |
(...skipping 569 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1267 // ----------------------------------- | 1270 // ----------------------------------- |
1268 TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss); | 1271 TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss); |
1269 } | 1272 } |
1270 | 1273 |
1271 | 1274 |
1272 #undef __ | 1275 #undef __ |
1273 | 1276 |
1274 } } // namespace v8::internal | 1277 } } // namespace v8::internal |
1275 | 1278 |
1276 #endif // V8_TARGET_ARCH_X64 | 1279 #endif // V8_TARGET_ARCH_X64 |
OLD | NEW |