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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/code_patcher.h" | 5 #include "vm/code_patcher.h" |
6 #include "vm/cpu.h" | 6 #include "vm/cpu.h" |
7 #include "vm/instructions.h" | 7 #include "vm/instructions.h" |
8 #include "vm/object.h" | 8 #include "vm/object.h" |
9 #include "vm/virtual_memory.h" | 9 #include "vm/virtual_memory.h" |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 | 12 |
13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); | 13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); |
14 | 14 |
15 | |
16 WritableInstructionsScope::WritableInstructionsScope(uword address, | 15 WritableInstructionsScope::WritableInstructionsScope(uword address, |
17 intptr_t size) | 16 intptr_t size) |
18 : address_(address), size_(size) { | 17 : address_(address), size_(size) { |
19 if (FLAG_write_protect_code) { | 18 if (FLAG_write_protect_code) { |
20 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), size, | 19 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), size, |
21 VirtualMemory::kReadWrite); | 20 VirtualMemory::kReadWrite); |
22 ASSERT(status); | 21 ASSERT(status); |
23 } | 22 } |
24 } | 23 } |
25 | 24 |
26 | |
27 WritableInstructionsScope::~WritableInstructionsScope() { | 25 WritableInstructionsScope::~WritableInstructionsScope() { |
28 if (FLAG_write_protect_code) { | 26 if (FLAG_write_protect_code) { |
29 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), | 27 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), |
30 size_, VirtualMemory::kReadExecute); | 28 size_, VirtualMemory::kReadExecute); |
31 ASSERT(status); | 29 ASSERT(status); |
32 } | 30 } |
33 } | 31 } |
34 | 32 |
35 } // namespace dart | 33 } // namespace dart |
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