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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
| 6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
| 7 | 7 |
| 8 #include "vm/intrinsifier.h" | 8 #include "vm/intrinsifier.h" |
| 9 | 9 |
| 10 #include "vm/assembler.h" | 10 #include "vm/assembler.h" |
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| 1523 // hash_ = hash_ & ((static_cast<intptr_t>(1) << bits) - 1); | 1523 // hash_ = hash_ & ((static_cast<intptr_t>(1) << bits) - 1); |
| 1524 __ LoadImmediate(R2, (static_cast<intptr_t>(1) << String::kHashBits) - 1); | 1524 __ LoadImmediate(R2, (static_cast<intptr_t>(1) << String::kHashBits) - 1); |
| 1525 __ and_(R0, R0, ShifterOperand(R2)); | 1525 __ and_(R0, R0, ShifterOperand(R2)); |
| 1526 __ cmp(R0, ShifterOperand(0)); | 1526 __ cmp(R0, ShifterOperand(0)); |
| 1527 // return hash_ == 0 ? 1 : hash_; | 1527 // return hash_ == 0 ? 1 : hash_; |
| 1528 __ Bind(&done); | 1528 __ Bind(&done); |
| 1529 __ mov(R0, ShifterOperand(1), EQ); | 1529 __ mov(R0, ShifterOperand(1), EQ); |
| 1530 __ SmiTag(R0); | 1530 __ SmiTag(R0); |
| 1531 __ str(R0, FieldAddress(R1, String::hash_offset())); | 1531 __ str(R0, FieldAddress(R1, String::hash_offset())); |
| 1532 __ Ret(); | 1532 __ Ret(); |
| 1533 return false; | 1533 return true; |
| 1534 } | 1534 } |
| 1535 | 1535 |
| 1536 | 1536 |
| 1537 // Allocates one-byte string of length 'end - start'. The content is not | 1537 // Allocates one-byte string of length 'end - start'. The content is not |
| 1538 // initialized. | 1538 // initialized. |
| 1539 // 'length-reg' (R2) contains tagged length. | 1539 // 'length-reg' (R2) contains tagged length. |
| 1540 // Returns new string as tagged pointer in R0. | 1540 // Returns new string as tagged pointer in R0. |
| 1541 static void TryAllocateOnebyteString(Assembler* assembler, | 1541 static void TryAllocateOnebyteString(Assembler* assembler, |
| 1542 Label* ok, | 1542 Label* ok, |
| 1543 Label* failure) { | 1543 Label* failure) { |
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| 1687 __ Bind(&ok); | 1687 __ Bind(&ok); |
| 1688 __ Ret(); | 1688 __ Ret(); |
| 1689 | 1689 |
| 1690 __ Bind(&fall_through); | 1690 __ Bind(&fall_through); |
| 1691 return false; | 1691 return false; |
| 1692 } | 1692 } |
| 1693 | 1693 |
| 1694 } // namespace dart | 1694 } // namespace dart |
| 1695 | 1695 |
| 1696 #endif // defined TARGET_ARCH_ARM | 1696 #endif // defined TARGET_ARCH_ARM |
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