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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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1135 bool operator!=(ExternalReference, ExternalReference); | 1135 bool operator!=(ExternalReference, ExternalReference); |
1136 | 1136 |
1137 size_t hash_value(ExternalReference); | 1137 size_t hash_value(ExternalReference); |
1138 | 1138 |
1139 std::ostream& operator<<(std::ostream&, ExternalReference); | 1139 std::ostream& operator<<(std::ostream&, ExternalReference); |
1140 | 1140 |
1141 | 1141 |
1142 // ----------------------------------------------------------------------------- | 1142 // ----------------------------------------------------------------------------- |
1143 // Position recording support | 1143 // Position recording support |
1144 | 1144 |
1145 struct PositionState { | |
1146 PositionState() : current_position(RelocInfo::kNoPosition), | |
1147 written_position(RelocInfo::kNoPosition), | |
1148 current_statement_position(RelocInfo::kNoPosition), | |
1149 written_statement_position(RelocInfo::kNoPosition) {} | |
1150 | |
1151 int current_position; | |
1152 int written_position; | |
1153 | |
1154 int current_statement_position; | |
1155 int written_statement_position; | |
1156 }; | |
1157 | |
1158 class AssemblerPositionsRecorder : public PositionsRecorder { | 1145 class AssemblerPositionsRecorder : public PositionsRecorder { |
1159 public: | 1146 public: |
1160 explicit AssemblerPositionsRecorder(Assembler* assembler) | 1147 explicit AssemblerPositionsRecorder(Assembler* assembler) |
1161 : assembler_(assembler) {} | 1148 : assembler_(assembler), |
| 1149 current_position_(RelocInfo::kNoPosition), |
| 1150 written_position_(RelocInfo::kNoPosition), |
| 1151 current_statement_position_(RelocInfo::kNoPosition), |
| 1152 written_statement_position_(RelocInfo::kNoPosition) {} |
1162 | 1153 |
1163 // Set current position to pos. | 1154 // Set current position to pos. |
1164 void RecordPosition(int pos); | 1155 bool RecordPosition(int pos); |
1165 | 1156 |
1166 // Set current statement position to pos. | 1157 // Set current statement position to pos. |
1167 void RecordStatementPosition(int pos); | 1158 bool RecordStatementPosition(int pos); |
1168 | 1159 |
| 1160 private: |
1169 // Write recorded positions to relocation information. | 1161 // Write recorded positions to relocation information. |
1170 bool WriteRecordedPositions(); | 1162 bool WriteRecordedPositions(); |
1171 | 1163 |
1172 int current_position() const { return state_.current_position; } | 1164 Assembler* assembler_; |
1173 | 1165 |
1174 int current_statement_position() const { | 1166 int current_position_; |
1175 return state_.current_statement_position; | 1167 int written_position_; |
1176 } | |
1177 | 1168 |
1178 private: | 1169 int current_statement_position_; |
1179 Assembler* assembler_; | 1170 int written_statement_position_; |
1180 PositionState state_; | |
1181 | 1171 |
1182 DISALLOW_COPY_AND_ASSIGN(AssemblerPositionsRecorder); | 1172 DISALLOW_COPY_AND_ASSIGN(AssemblerPositionsRecorder); |
1183 }; | 1173 }; |
1184 | 1174 |
1185 | 1175 |
1186 // ----------------------------------------------------------------------------- | 1176 // ----------------------------------------------------------------------------- |
1187 // Utility functions | 1177 // Utility functions |
1188 | 1178 |
1189 inline int NumberOfBitsSet(uint32_t x) { | 1179 inline int NumberOfBitsSet(uint32_t x) { |
1190 unsigned int num_bits_set; | 1180 unsigned int num_bits_set; |
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1350 std::vector<ConstantPoolEntry> shared_entries; | 1340 std::vector<ConstantPoolEntry> shared_entries; |
1351 }; | 1341 }; |
1352 | 1342 |
1353 Label emitted_label_; // Records pc_offset of emitted pool | 1343 Label emitted_label_; // Records pc_offset of emitted pool |
1354 PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES]; | 1344 PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES]; |
1355 }; | 1345 }; |
1356 | 1346 |
1357 } // namespace internal | 1347 } // namespace internal |
1358 } // namespace v8 | 1348 } // namespace v8 |
1359 #endif // V8_ASSEMBLER_H_ | 1349 #endif // V8_ASSEMBLER_H_ |
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