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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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926 void AbortIfNotString(Register object); | 926 void AbortIfNotString(Register object); |
927 | 927 |
928 // Abort execution if argument is not the root value with the given index. | 928 // Abort execution if argument is not the root value with the given index. |
929 void AbortIfNotRootValue(Register src, | 929 void AbortIfNotRootValue(Register src, |
930 Heap::RootListIndex root_value_index, | 930 Heap::RootListIndex root_value_index, |
931 const char* message); | 931 const char* message); |
932 | 932 |
933 // --------------------------------------------------------------------------- | 933 // --------------------------------------------------------------------------- |
934 // Exception handling | 934 // Exception handling |
935 | 935 |
936 // Push a new try handler and link it into try handler chain. | 936 // Push a new try handler and link into try handler chain. The return |
937 void PushTryHandler(CodeLocation try_location, | 937 // address must be pushed before calling this helper. |
938 HandlerType type, | 938 void PushTryHandler(CodeLocation try_location, HandlerType type); |
939 int handler_index); | |
940 | 939 |
941 // Unlink the stack handler on top of the stack from the try handler chain. | 940 // Unlink the stack handler on top of the stack from the try handler chain. |
942 void PopTryHandler(); | 941 void PopTryHandler(); |
943 | 942 |
944 // Activate the top handler in the try hander chain and pass the | 943 // Activate the top handler in the try hander chain and pass the |
945 // thrown value. | 944 // thrown value. |
946 void Throw(Register value); | 945 void Throw(Register value); |
947 | 946 |
948 // Propagate an uncatchable exception out of the current JS stack. | 947 // Propagate an uncatchable exception out of the current JS stack. |
949 void ThrowUncatchable(UncatchableExceptionType type, Register value); | 948 void ThrowUncatchable(UncatchableExceptionType type, Register value); |
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1320 Label::Distance distance = Label::kFar); | 1319 Label::Distance distance = Label::kFar); |
1321 | 1320 |
1322 // Helper for finding the mark bits for an address. Afterwards, the | 1321 // Helper for finding the mark bits for an address. Afterwards, the |
1323 // bitmap register points at the word with the mark bits and the mask | 1322 // bitmap register points at the word with the mark bits and the mask |
1324 // the position of the first bit. Uses rcx as scratch and leaves addr_reg | 1323 // the position of the first bit. Uses rcx as scratch and leaves addr_reg |
1325 // unchanged. | 1324 // unchanged. |
1326 inline void GetMarkBits(Register addr_reg, | 1325 inline void GetMarkBits(Register addr_reg, |
1327 Register bitmap_reg, | 1326 Register bitmap_reg, |
1328 Register mask_reg); | 1327 Register mask_reg); |
1329 | 1328 |
1330 // Helper for throwing exceptions. Compute a handler address and jump to | |
1331 // it. See the implementation for register usage. | |
1332 void JumpToHandlerEntry(); | |
1333 | |
1334 // Compute memory operands for safepoint stack slots. | 1329 // Compute memory operands for safepoint stack slots. |
1335 Operand SafepointRegisterSlot(Register reg); | 1330 Operand SafepointRegisterSlot(Register reg); |
1336 static int SafepointRegisterStackIndex(int reg_code) { | 1331 static int SafepointRegisterStackIndex(int reg_code) { |
1337 return kNumSafepointRegisters - kSafepointPushRegisterIndices[reg_code] - 1; | 1332 return kNumSafepointRegisters - kSafepointPushRegisterIndices[reg_code] - 1; |
1338 } | 1333 } |
1339 | 1334 |
1340 // Needs access to SafepointRegisterStackIndex for optimized frame | 1335 // Needs access to SafepointRegisterStackIndex for optimized frame |
1341 // traversal. | 1336 // traversal. |
1342 friend class OptimizedFrame; | 1337 friend class OptimizedFrame; |
1343 }; | 1338 }; |
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1420 masm->popfd(); \ | 1415 masm->popfd(); \ |
1421 } \ | 1416 } \ |
1422 masm-> | 1417 masm-> |
1423 #else | 1418 #else |
1424 #define ACCESS_MASM(masm) masm-> | 1419 #define ACCESS_MASM(masm) masm-> |
1425 #endif | 1420 #endif |
1426 | 1421 |
1427 } } // namespace v8::internal | 1422 } } // namespace v8::internal |
1428 | 1423 |
1429 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1424 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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