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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_ARM64_ASSEMBLER_ARM64_H_ | 5 #ifndef V8_ARM64_ASSEMBLER_ARM64_H_ |
6 #define V8_ARM64_ASSEMBLER_ARM64_H_ | 6 #define V8_ARM64_ASSEMBLER_ARM64_H_ |
7 | 7 |
8 #include <list> | 8 #include <list> |
9 #include <map> | 9 #include <map> |
10 #include <vector> | 10 #include <vector> |
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945 } | 945 } |
946 | 946 |
947 // Return the number of instructions generated from label to the | 947 // Return the number of instructions generated from label to the |
948 // current position. | 948 // current position. |
949 int InstructionsGeneratedSince(const Label* label) { | 949 int InstructionsGeneratedSince(const Label* label) { |
950 return SizeOfCodeGeneratedSince(label) / kInstructionSize; | 950 return SizeOfCodeGeneratedSince(label) / kInstructionSize; |
951 } | 951 } |
952 | 952 |
953 // Number of instructions generated for the return sequence in | 953 // Number of instructions generated for the return sequence in |
954 // FullCodeGenerator::EmitReturnSequence. | 954 // FullCodeGenerator::EmitReturnSequence. |
955 static const int kJSRetSequenceInstructions = 7; | 955 static const int kJSReturnSequenceInstructions = 7; |
| 956 static const int kJSReturnSequenceLength = |
| 957 kJSReturnSequenceInstructions * kInstructionSize; |
956 // Distance between start of patched return sequence and the emitted address | 958 // Distance between start of patched return sequence and the emitted address |
957 // to jump to. | 959 // to jump to. |
958 static const int kPatchReturnSequenceAddressOffset = 0; | 960 static const int kPatchReturnSequenceAddressOffset = 0; |
959 static const int kPatchDebugBreakSlotAddressOffset = 0; | 961 static const int kPatchDebugBreakSlotAddressOffset = 0; |
960 | 962 |
961 // Number of instructions necessary to be able to later patch it to a call. | 963 // Number of instructions necessary to be able to later patch it to a call. |
962 // See DebugCodegen::GenerateSlot() and | 964 // See DebugCodegen::GenerateSlot() and |
963 // BreakLocationIterator::SetDebugBreakAtSlot(). | 965 // BreakLocation::SetDebugBreakAtSlot(). |
964 static const int kDebugBreakSlotInstructions = 4; | 966 static const int kDebugBreakSlotInstructions = 4; |
965 static const int kDebugBreakSlotLength = | 967 static const int kDebugBreakSlotLength = |
966 kDebugBreakSlotInstructions * kInstructionSize; | 968 kDebugBreakSlotInstructions * kInstructionSize; |
967 | 969 |
968 static const int kPatchDebugBreakSlotReturnOffset = 2 * kInstructionSize; | 970 static const int kPatchDebugBreakSlotReturnOffset = 2 * kInstructionSize; |
969 | 971 |
970 // Prevent contant pool emission until EndBlockConstPool is called. | 972 // Prevent contant pool emission until EndBlockConstPool is called. |
971 // Call to this function can be nested but must be followed by an equal | 973 // Call to this function can be nested but must be followed by an equal |
972 // number of call to EndBlockConstpool. | 974 // number of call to EndBlockConstpool. |
973 void StartBlockConstPool(); | 975 void StartBlockConstPool(); |
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2305 class EnsureSpace BASE_EMBEDDED { | 2307 class EnsureSpace BASE_EMBEDDED { |
2306 public: | 2308 public: |
2307 explicit EnsureSpace(Assembler* assembler) { | 2309 explicit EnsureSpace(Assembler* assembler) { |
2308 assembler->CheckBufferSpace(); | 2310 assembler->CheckBufferSpace(); |
2309 } | 2311 } |
2310 }; | 2312 }; |
2311 | 2313 |
2312 } } // namespace v8::internal | 2314 } } // namespace v8::internal |
2313 | 2315 |
2314 #endif // V8_ARM64_ASSEMBLER_ARM64_H_ | 2316 #endif // V8_ARM64_ASSEMBLER_ARM64_H_ |
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