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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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678 // Return the address in the constant pool of the code target address used by | 678 // Return the address in the constant pool of the code target address used by |
679 // the branch/call instruction at pc. | 679 // the branch/call instruction at pc. |
680 INLINE(static Address target_address_address_at(Address pc)); | 680 INLINE(static Address target_address_address_at(Address pc)); |
681 | 681 |
682 // Read/Modify the code target address in the branch/call instruction at pc. | 682 // Read/Modify the code target address in the branch/call instruction at pc. |
683 INLINE(static Address target_address_at(Address pc)); | 683 INLINE(static Address target_address_at(Address pc)); |
684 INLINE(static void set_target_address_at(Address pc, Address target)); | 684 INLINE(static void set_target_address_at(Address pc, Address target)); |
685 | 685 |
686 // This sets the branch destination (which is in the constant pool on ARM). | 686 // This sets the branch destination (which is in the constant pool on ARM). |
687 // This is for calls and branches within generated code. | 687 // This is for calls and branches within generated code. |
688 inline static void set_target_at(Address constant_pool_entry, Address target); | 688 inline static void deserialization_set_special_target_at( |
| 689 Address constant_pool_entry, Address target); |
689 | 690 |
690 // This sets the branch destination (which is in the constant pool on ARM). | 691 // This sets the branch destination (which is in the constant pool on ARM). |
691 // This is for calls and branches to runtime code. | 692 // This is for calls and branches to runtime code. |
692 inline static void set_external_target_at(Address constant_pool_entry, | 693 inline static void set_external_target_at(Address constant_pool_entry, |
693 Address target) { | 694 Address target); |
694 set_target_at(constant_pool_entry, target); | |
695 } | |
696 | 695 |
697 // Here we are patching the address in the constant pool, not the actual call | 696 // Here we are patching the address in the constant pool, not the actual call |
698 // instruction. The address in the constant pool is the same size as a | 697 // instruction. The address in the constant pool is the same size as a |
699 // pointer. | 698 // pointer. |
700 static const int kCallTargetSize = kPointerSize; | 699 static const int kSpecialTargetSize = kPointerSize; |
701 static const int kExternalTargetSize = kPointerSize; | |
702 | 700 |
703 // Size of an instruction. | 701 // Size of an instruction. |
704 static const int kInstrSize = sizeof(Instr); | 702 static const int kInstrSize = sizeof(Instr); |
705 | 703 |
706 // Distance between the instruction referring to the address of the call | 704 // Distance between the instruction referring to the address of the call |
707 // target and the return address. | 705 // target and the return address. |
708 #ifdef USE_BLX | 706 #ifdef USE_BLX |
709 // Call sequence is: | 707 // Call sequence is: |
710 // ldr ip, [pc, #...] @ call address | 708 // ldr ip, [pc, #...] @ call address |
711 // blx ip | 709 // blx ip |
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1436 public: | 1434 public: |
1437 explicit EnsureSpace(Assembler* assembler) { | 1435 explicit EnsureSpace(Assembler* assembler) { |
1438 assembler->CheckBuffer(); | 1436 assembler->CheckBuffer(); |
1439 } | 1437 } |
1440 }; | 1438 }; |
1441 | 1439 |
1442 | 1440 |
1443 } } // namespace v8::internal | 1441 } } // namespace v8::internal |
1444 | 1442 |
1445 #endif // V8_ARM_ASSEMBLER_ARM_H_ | 1443 #endif // V8_ARM_ASSEMBLER_ARM_H_ |
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