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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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773 // RelocInfo and pools ------------------------------------------------------ | 773 // RelocInfo and pools ------------------------------------------------------ |
774 | 774 |
775 // Record relocation information for current pc_. | 775 // Record relocation information for current pc_. |
776 void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); | 776 void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0); |
777 | 777 |
778 // Return the address in the constant pool of the code target address used by | 778 // Return the address in the constant pool of the code target address used by |
779 // the branch/call instruction at pc. | 779 // the branch/call instruction at pc. |
780 inline static Address target_pointer_address_at(Address pc); | 780 inline static Address target_pointer_address_at(Address pc); |
781 | 781 |
782 // Read/Modify the code target address in the branch/call instruction at pc. | 782 // Read/Modify the code target address in the branch/call instruction at pc. |
783 inline static Address target_address_at(Address pc, | 783 inline static Address target_address_at(Address pc); |
784 ConstantPoolArray* constant_pool); | 784 inline static void set_target_address_at(Address pc, Address target); |
785 inline static void set_target_address_at(Address pc, | |
786 ConstantPoolArray* constant_pool, | |
787 Address target); | |
788 static inline Address target_address_at(Address pc, Code* code); | |
789 static inline void set_target_address_at(Address pc, | |
790 Code* code, | |
791 Address target); | |
792 | 785 |
793 // Return the code target address at a call site from the return address of | 786 // Return the code target address at a call site from the return address of |
794 // that call in the instruction stream. | 787 // that call in the instruction stream. |
795 inline static Address target_address_from_return_address(Address pc); | 788 inline static Address target_address_from_return_address(Address pc); |
796 | 789 |
797 // Given the address of the beginning of a call, return the address in the | 790 // Given the address of the beginning of a call, return the address in the |
798 // instruction stream that call will return from. | 791 // instruction stream that call will return from. |
799 inline static Address return_address_from_call_start(Address pc); | 792 inline static Address return_address_from_call_start(Address pc); |
800 | 793 |
801 // This sets the branch destination (which is in the constant pool on ARM). | 794 // This sets the branch destination (which is in the constant pool on ARM). |
802 // This is for calls and branches within generated code. | 795 // This is for calls and branches within generated code. |
803 inline static void deserialization_set_special_target_at( | 796 inline static void deserialization_set_special_target_at( |
804 Address constant_pool_entry, Code* code, Address target); | 797 Address constant_pool_entry, Address target); |
805 | 798 |
806 // All addresses in the constant pool are the same size as pointers. | 799 // All addresses in the constant pool are the same size as pointers. |
807 static const int kSpecialTargetSize = kPointerSize; | 800 static const int kSpecialTargetSize = kPointerSize; |
808 | 801 |
809 // The sizes of the call sequences emitted by MacroAssembler::Call. | 802 // The sizes of the call sequences emitted by MacroAssembler::Call. |
810 // Wherever possible, use MacroAssembler::CallSize instead of these constants, | 803 // Wherever possible, use MacroAssembler::CallSize instead of these constants, |
811 // as it will choose the correct value for a given relocation mode. | 804 // as it will choose the correct value for a given relocation mode. |
812 // | 805 // |
813 // Without relocation: | 806 // Without relocation: |
814 // movz ip0, #(target & 0x000000000000ffff) | 807 // movz ip0, #(target & 0x000000000000ffff) |
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2196 class EnsureSpace BASE_EMBEDDED { | 2189 class EnsureSpace BASE_EMBEDDED { |
2197 public: | 2190 public: |
2198 explicit EnsureSpace(Assembler* assembler) { | 2191 explicit EnsureSpace(Assembler* assembler) { |
2199 assembler->CheckBuffer(); | 2192 assembler->CheckBuffer(); |
2200 } | 2193 } |
2201 }; | 2194 }; |
2202 | 2195 |
2203 } } // namespace v8::internal | 2196 } } // namespace v8::internal |
2204 | 2197 |
2205 #endif // V8_A64_ASSEMBLER_A64_H_ | 2198 #endif // V8_A64_ASSEMBLER_A64_H_ |
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