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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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809 | 809 |
810 // Writes a single byte or word of data in the code stream. Used for | 810 // Writes a single byte or word of data in the code stream. Used for |
811 // inline tables, e.g., jump-tables. | 811 // inline tables, e.g., jump-tables. |
812 void db(uint8_t data); | 812 void db(uint8_t data); |
813 void dd(uint32_t data); | 813 void dd(uint32_t data); |
814 | 814 |
815 int32_t pc_offset() const { return pc_ - buffer_; } | 815 int32_t pc_offset() const { return pc_ - buffer_; } |
816 | 816 |
817 PositionsRecorder* positions_recorder() { return &positions_recorder_; } | 817 PositionsRecorder* positions_recorder() { return &positions_recorder_; } |
818 | 818 |
819 bool can_peephole_optimize(int instructions) { | |
820 if (!allow_peephole_optimization_) return false; | |
821 if (last_bound_pos_ > pc_offset() - instructions * kInstrSize) return false; | |
822 return reloc_info_writer.last_pc() <= pc_ - instructions * kInstrSize; | |
823 } | |
824 | |
825 // Postpone the generation of the trampoline pool for the specified number of | 819 // Postpone the generation of the trampoline pool for the specified number of |
826 // instructions. | 820 // instructions. |
827 void BlockTrampolinePoolFor(int instructions); | 821 void BlockTrampolinePoolFor(int instructions); |
828 | 822 |
829 // Check if there is less than kGap bytes available in the buffer. | 823 // Check if there is less than kGap bytes available in the buffer. |
830 // If this is the case, we need to grow the buffer before emitting | 824 // If this is the case, we need to grow the buffer before emitting |
831 // an instruction or relocation information. | 825 // an instruction or relocation information. |
832 inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; } | 826 inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; } |
833 | 827 |
834 // Get the number of bytes available in the buffer. | 828 // Get the number of bytes available in the buffer. |
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1119 | 1113 |
1120 List<Trampoline> trampolines_; | 1114 List<Trampoline> trampolines_; |
1121 bool internal_trampoline_exception_; | 1115 bool internal_trampoline_exception_; |
1122 | 1116 |
1123 friend class RegExpMacroAssemblerMIPS; | 1117 friend class RegExpMacroAssemblerMIPS; |
1124 friend class RelocInfo; | 1118 friend class RelocInfo; |
1125 friend class CodePatcher; | 1119 friend class CodePatcher; |
1126 friend class BlockTrampolinePoolScope; | 1120 friend class BlockTrampolinePoolScope; |
1127 | 1121 |
1128 PositionsRecorder positions_recorder_; | 1122 PositionsRecorder positions_recorder_; |
1129 bool allow_peephole_optimization_; | |
1130 bool emit_debug_code_; | 1123 bool emit_debug_code_; |
1131 friend class PositionsRecorder; | 1124 friend class PositionsRecorder; |
1132 friend class EnsureSpace; | 1125 friend class EnsureSpace; |
1133 }; | 1126 }; |
1134 | 1127 |
1135 | 1128 |
1136 class EnsureSpace BASE_EMBEDDED { | 1129 class EnsureSpace BASE_EMBEDDED { |
1137 public: | 1130 public: |
1138 explicit EnsureSpace(Assembler* assembler) { | 1131 explicit EnsureSpace(Assembler* assembler) { |
1139 assembler->CheckBuffer(); | 1132 assembler->CheckBuffer(); |
1140 } | 1133 } |
1141 }; | 1134 }; |
1142 | 1135 |
1143 } } // namespace v8::internal | 1136 } } // namespace v8::internal |
1144 | 1137 |
1145 #endif // V8_ARM_ASSEMBLER_MIPS_H_ | 1138 #endif // V8_ARM_ASSEMBLER_MIPS_H_ |
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