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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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38 enum AllocationFlags { | 38 enum AllocationFlags { |
39 // No special flags. | 39 // No special flags. |
40 NO_ALLOCATION_FLAGS = 0, | 40 NO_ALLOCATION_FLAGS = 0, |
41 // Return the pointer to the allocated already tagged as a heap object. | 41 // Return the pointer to the allocated already tagged as a heap object. |
42 TAG_OBJECT = 1 << 0, | 42 TAG_OBJECT = 1 << 0, |
43 // The content of the result register already contains the allocation top in | 43 // The content of the result register already contains the allocation top in |
44 // new space. | 44 // new space. |
45 RESULT_CONTAINS_TOP = 1 << 1 | 45 RESULT_CONTAINS_TOP = 1 << 1 |
46 }; | 46 }; |
47 | 47 |
| 48 |
48 // Default scratch register used by MacroAssembler (and other code that needs | 49 // Default scratch register used by MacroAssembler (and other code that needs |
49 // a spare register). The register isn't callee save, and not used by the | 50 // a spare register). The register isn't callee save, and not used by the |
50 // function calling convention. | 51 // function calling convention. |
51 static const Register kScratchRegister = { 10 }; // r10. | 52 static const Register kScratchRegister = { 10 }; // r10. |
52 static const Register kSmiConstantRegister = { 12 }; // r12 (callee save). | 53 static const Register kSmiConstantRegister = { 12 }; // r12 (callee save). |
53 static const Register kRootRegister = { 13 }; // r13 (callee save). | 54 static const Register kRootRegister = { 13 }; // r13 (callee save). |
54 // Value of smi in kSmiConstantRegister. | 55 // Value of smi in kSmiConstantRegister. |
55 static const int kSmiConstantRegisterValue = 1; | 56 static const int kSmiConstantRegisterValue = 1; |
56 // Actual value of root register is offset from the root array's start | 57 // Actual value of root register is offset from the root array's start |
57 // to take advantage of negitive 8-bit displacement values. | 58 // to take advantage of negitive 8-bit displacement values. |
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745 void CmpInstanceType(Register map, InstanceType type); | 746 void CmpInstanceType(Register map, InstanceType type); |
746 | 747 |
747 // Check if the map of an object is equal to a specified map and | 748 // Check if the map of an object is equal to a specified map and |
748 // branch to label if not. Skip the smi check if not required | 749 // branch to label if not. Skip the smi check if not required |
749 // (object is known to be a heap object) | 750 // (object is known to be a heap object) |
750 void CheckMap(Register obj, | 751 void CheckMap(Register obj, |
751 Handle<Map> map, | 752 Handle<Map> map, |
752 Label* fail, | 753 Label* fail, |
753 SmiCheckType smi_check_type); | 754 SmiCheckType smi_check_type); |
754 | 755 |
| 756 // Check if the map of an object is equal to a specified map and branch to a |
| 757 // specified target if equal. Skip the smi check if not required (object is |
| 758 // known to be a heap object) |
| 759 void DispatchMap(Register obj, |
| 760 Handle<Map> map, |
| 761 Handle<Code> success, |
| 762 SmiCheckType smi_check_type); |
| 763 |
755 // Check if the object in register heap_object is a string. Afterwards the | 764 // Check if the object in register heap_object is a string. Afterwards the |
756 // register map contains the object map and the register instance_type | 765 // register map contains the object map and the register instance_type |
757 // contains the instance_type. The registers map and instance_type can be the | 766 // contains the instance_type. The registers map and instance_type can be the |
758 // same in which case it contains the instance type afterwards. Either of the | 767 // same in which case it contains the instance type afterwards. Either of the |
759 // registers map and instance_type can be the same as heap_object. | 768 // registers map and instance_type can be the same as heap_object. |
760 Condition IsObjectStringType(Register heap_object, | 769 Condition IsObjectStringType(Register heap_object, |
761 Register map, | 770 Register map, |
762 Register instance_type); | 771 Register instance_type); |
763 | 772 |
764 // FCmp compares and pops the two values on top of the FPU stack. | 773 // FCmp compares and pops the two values on top of the FPU stack. |
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1261 masm->popfd(); \ | 1270 masm->popfd(); \ |
1262 } \ | 1271 } \ |
1263 masm-> | 1272 masm-> |
1264 #else | 1273 #else |
1265 #define ACCESS_MASM(masm) masm-> | 1274 #define ACCESS_MASM(masm) masm-> |
1266 #endif | 1275 #endif |
1267 | 1276 |
1268 } } // namespace v8::internal | 1277 } } // namespace v8::internal |
1269 | 1278 |
1270 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1279 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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