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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 are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // 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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1042 intptr_t pc_delta); | 1042 intptr_t pc_delta); |
1043 | 1043 |
1044 // Writes a single byte or word of data in the code stream. Used for | 1044 // Writes a single byte or word of data in the code stream. Used for |
1045 // inline tables, e.g., jump-tables. | 1045 // inline tables, e.g., jump-tables. |
1046 void db(uint8_t data); | 1046 void db(uint8_t data); |
1047 void dd(uint32_t data); | 1047 void dd(uint32_t data); |
1048 void dq(uint64_t data); | 1048 void dq(uint64_t data); |
1049 void dp(uintptr_t data) { dd(data); } | 1049 void dp(uintptr_t data) { dd(data); } |
1050 void dd(Label* label); | 1050 void dd(Label* label); |
1051 | 1051 |
1052 // Emits the address of the code stub's first instruction. | |
1053 void emit_code_stub_address(Code* stub); | |
1054 | |
1055 PositionsRecorder* positions_recorder() { return &positions_recorder_; } | 1052 PositionsRecorder* positions_recorder() { return &positions_recorder_; } |
1056 | 1053 |
1057 // Postpone the generation of the trampoline pool for the specified number of | 1054 // Postpone the generation of the trampoline pool for the specified number of |
1058 // instructions. | 1055 // instructions. |
1059 void BlockTrampolinePoolFor(int instructions); | 1056 void BlockTrampolinePoolFor(int instructions); |
1060 | 1057 |
1061 // Check if there is less than kGap bytes available in the buffer. | 1058 // Check if there is less than kGap bytes available in the buffer. |
1062 // If this is the case, we need to grow the buffer before emitting | 1059 // If this is the case, we need to grow the buffer before emitting |
1063 // an instruction or relocation information. | 1060 // an instruction or relocation information. |
1064 inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; } | 1061 inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; } |
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1254 int last_bound_pos_; | 1251 int last_bound_pos_; |
1255 | 1252 |
1256 // Readable constants for compact branch handling in emit() | 1253 // Readable constants for compact branch handling in emit() |
1257 enum class CompactBranchType : bool { NO = false, COMPACT_BRANCH = true }; | 1254 enum class CompactBranchType : bool { NO = false, COMPACT_BRANCH = true }; |
1258 | 1255 |
1259 // Code emission. | 1256 // Code emission. |
1260 inline void CheckBuffer(); | 1257 inline void CheckBuffer(); |
1261 void GrowBuffer(); | 1258 void GrowBuffer(); |
1262 inline void emit(Instr x, | 1259 inline void emit(Instr x, |
1263 CompactBranchType is_compact_branch = CompactBranchType::NO); | 1260 CompactBranchType is_compact_branch = CompactBranchType::NO); |
| 1261 inline void emit(uint64_t x); |
| 1262 inline void EmitForbiddenSlotHelper(); |
| 1263 template <typename T> |
| 1264 inline void EmitHelper(T x); |
| 1265 inline void EmitHelper(Instr x, CompactBranchType is_compact_branch); |
1264 | 1266 |
1265 // Instruction generation. | 1267 // Instruction generation. |
1266 // We have 3 different kind of encoding layout on MIPS. | 1268 // We have 3 different kind of encoding layout on MIPS. |
1267 // However due to many different types of objects encoded in the same fields | 1269 // However due to many different types of objects encoded in the same fields |
1268 // we have quite a few aliases for each mode. | 1270 // we have quite a few aliases for each mode. |
1269 // Using the same structure to refer to Register and FPURegister would spare a | 1271 // Using the same structure to refer to Register and FPURegister would spare a |
1270 // few aliases, but mixing both does not look clean to me. | 1272 // few aliases, but mixing both does not look clean to me. |
1271 // Anyway we could surely implement this differently. | 1273 // Anyway we could surely implement this differently. |
1272 | 1274 |
1273 void GenInstrRegister(Opcode opcode, | 1275 void GenInstrRegister(Opcode opcode, |
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1430 public: | 1432 public: |
1431 explicit EnsureSpace(Assembler* assembler) { | 1433 explicit EnsureSpace(Assembler* assembler) { |
1432 assembler->CheckBuffer(); | 1434 assembler->CheckBuffer(); |
1433 } | 1435 } |
1434 }; | 1436 }; |
1435 | 1437 |
1436 } // namespace internal | 1438 } // namespace internal |
1437 } // namespace v8 | 1439 } // namespace v8 |
1438 | 1440 |
1439 #endif // V8_ARM_ASSEMBLER_MIPS_H_ | 1441 #endif // V8_ARM_ASSEMBLER_MIPS_H_ |
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