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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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_X64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. |
| 6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
| 7 | 7 |
| 8 #include "vm/cpu.h" | 8 #include "vm/cpu.h" |
| 9 #include "vm/instructions.h" | 9 #include "vm/instructions.h" |
| 10 #include "vm/object.h" | 10 #include "vm/object.h" |
| 11 | 11 |
| 12 namespace dart { | 12 namespace dart { |
| 13 | 13 |
| 14 intptr_t IndexFromPPLoad(uword start) { | |
| 15 int32_t offset = *reinterpret_cast<int32_t*>(start); | |
| 16 return ObjectPool::IndexFromOffset(offset); | |
| 17 } | |
| 18 | |
| 19 | |
| 20 uword JumpPattern::TargetAddress() const { | |
| 21 ASSERT(IsValid()); | |
| 22 int index = IndexFromPPLoad(start() + 3); | |
| 23 return object_pool_.RawValueAt(index); | |
| 24 } | |
| 25 | |
| 26 | |
| 27 void JumpPattern::SetTargetAddress(uword target) const { | |
| 28 ASSERT(IsValid()); | |
| 29 int index = IndexFromPPLoad(start() + 3); | |
| 30 object_pool_.SetRawValueAt(index, target); | |
| 31 // No need to flush the instruction cache, since the code is not modified. | |
| 32 } | |
| 33 | |
| 34 | |
| 35 void ShortCallPattern::SetTargetAddress(uword target) const { | 14 void ShortCallPattern::SetTargetAddress(uword target) const { |
| 36 ASSERT(IsValid()); | 15 ASSERT(IsValid()); |
| 37 *reinterpret_cast<uint32_t*>(start() + 1) = target - start() - kLengthInBytes; | 16 *reinterpret_cast<uint32_t*>(start() + 1) = target - start() - kLengthInBytes; |
| 38 CPU::FlushICache(start() + 1, kWordSize); | 17 CPU::FlushICache(start() + 1, kWordSize); |
| 39 } | 18 } |
| 40 | 19 |
| 41 | 20 |
| 42 } // namespace dart | 21 } // namespace dart |
| 43 | 22 |
| 44 #endif // defined TARGET_ARCH_X64 | 23 #endif // defined TARGET_ARCH_X64 |
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