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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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1137 bool operator!=(ExternalReference, ExternalReference); | 1137 bool operator!=(ExternalReference, ExternalReference); |
1138 | 1138 |
1139 size_t hash_value(ExternalReference); | 1139 size_t hash_value(ExternalReference); |
1140 | 1140 |
1141 std::ostream& operator<<(std::ostream&, ExternalReference); | 1141 std::ostream& operator<<(std::ostream&, ExternalReference); |
1142 | 1142 |
1143 | 1143 |
1144 // ----------------------------------------------------------------------------- | 1144 // ----------------------------------------------------------------------------- |
1145 // Position recording support | 1145 // Position recording support |
1146 | 1146 |
1147 struct PositionState { | 1147 struct PositionState { |
jgruber
2016/06/17 17:38:52
Can this be removed?
| |
1148 PositionState() : current_position(RelocInfo::kNoPosition), | 1148 PositionState() : current_position(RelocInfo::kNoPosition), |
1149 written_position(RelocInfo::kNoPosition), | 1149 written_position(RelocInfo::kNoPosition), |
1150 current_statement_position(RelocInfo::kNoPosition), | 1150 current_statement_position(RelocInfo::kNoPosition), |
1151 written_statement_position(RelocInfo::kNoPosition) {} | 1151 written_statement_position(RelocInfo::kNoPosition) {} |
1152 | 1152 |
1153 int current_position; | 1153 int current_position; |
1154 int written_position; | 1154 int written_position; |
1155 | 1155 |
1156 int current_statement_position; | 1156 int current_statement_position; |
1157 int written_statement_position; | 1157 int written_statement_position; |
1158 }; | 1158 }; |
1159 | 1159 |
1160 class AssemblerPositionsRecorder : public PositionsRecorder { | 1160 class AssemblerPositionsRecorder : public PositionsRecorder { |
1161 public: | 1161 public: |
1162 explicit AssemblerPositionsRecorder(Assembler* assembler) | 1162 explicit AssemblerPositionsRecorder(Assembler* assembler) |
1163 : assembler_(assembler) {} | 1163 : assembler_(assembler), |
1164 current_position_(RelocInfo::kNoPosition), | |
1165 written_position_(RelocInfo::kNoPosition), | |
1166 current_statement_position_(RelocInfo::kNoPosition), | |
1167 written_statement_position_(RelocInfo::kNoPosition) {} | |
1164 | 1168 |
1165 // Set current position to pos. | 1169 // Set current position to pos. |
1166 void RecordPosition(int pos); | 1170 bool RecordPosition(int pos); |
1167 | 1171 |
1168 // Set current statement position to pos. | 1172 // Set current statement position to pos. |
1169 void RecordStatementPosition(int pos); | 1173 bool RecordStatementPosition(int pos); |
1170 | 1174 |
1175 private: | |
1171 // Write recorded positions to relocation information. | 1176 // Write recorded positions to relocation information. |
1172 bool WriteRecordedPositions(); | 1177 bool WriteRecordedPositions(); |
1173 | 1178 |
1174 int current_position() const { return state_.current_position; } | 1179 Assembler* assembler_; |
1175 | 1180 |
1176 int current_statement_position() const { | 1181 int current_position_; |
1177 return state_.current_statement_position; | 1182 int written_position_; |
1178 } | |
1179 | 1183 |
1180 private: | 1184 int current_statement_position_; |
1181 Assembler* assembler_; | 1185 int written_statement_position_; |
1182 PositionState state_; | |
1183 | 1186 |
1184 DISALLOW_COPY_AND_ASSIGN(AssemblerPositionsRecorder); | 1187 DISALLOW_COPY_AND_ASSIGN(AssemblerPositionsRecorder); |
1185 }; | 1188 }; |
1186 | 1189 |
1187 | 1190 |
1188 // ----------------------------------------------------------------------------- | 1191 // ----------------------------------------------------------------------------- |
1189 // Utility functions | 1192 // Utility functions |
1190 | 1193 |
1191 inline int NumberOfBitsSet(uint32_t x) { | 1194 inline int NumberOfBitsSet(uint32_t x) { |
1192 unsigned int num_bits_set; | 1195 unsigned int num_bits_set; |
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1352 std::vector<ConstantPoolEntry> shared_entries; | 1355 std::vector<ConstantPoolEntry> shared_entries; |
1353 }; | 1356 }; |
1354 | 1357 |
1355 Label emitted_label_; // Records pc_offset of emitted pool | 1358 Label emitted_label_; // Records pc_offset of emitted pool |
1356 PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES]; | 1359 PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES]; |
1357 }; | 1360 }; |
1358 | 1361 |
1359 } // namespace internal | 1362 } // namespace internal |
1360 } // namespace v8 | 1363 } // namespace v8 |
1361 #endif // V8_ASSEMBLER_H_ | 1364 #endif // V8_ASSEMBLER_H_ |
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