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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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