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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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_ARM64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM64. |
6 #if defined(TARGET_ARCH_ARM64) | 6 #if defined(TARGET_ARCH_ARM64) |
7 | 7 |
8 #include "vm/code_patcher.h" | 8 #include "vm/code_patcher.h" |
9 #include "vm/cpu.h" | 9 #include "vm/cpu.h" |
10 #include "vm/instructions.h" | 10 #include "vm/instructions.h" |
11 #include "vm/object.h" | 11 #include "vm/object.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 class PoolPointerCall : public ValueObject { | 15 class PoolPointerCall : public ValueObject { |
16 public: | 16 public: |
17 PoolPointerCall(uword pc, const Code& code) | 17 PoolPointerCall(uword pc, const Code& code) |
18 : end_(pc), | 18 : end_(pc), object_pool_(ObjectPool::Handle(code.GetObjectPool())) { |
19 object_pool_(ObjectPool::Handle(code.GetObjectPool())) { | |
20 // Last instruction: blr ip0. | 19 // Last instruction: blr ip0. |
21 ASSERT(*(reinterpret_cast<uint32_t*>(end_) - 1) == 0xd63f0200); | 20 ASSERT(*(reinterpret_cast<uint32_t*>(end_) - 1) == 0xd63f0200); |
22 InstructionPattern::DecodeLoadWordFromPool( | 21 InstructionPattern::DecodeLoadWordFromPool(end_ - 2 * Instr::kInstrSize, |
23 end_ - 2 * Instr::kInstrSize, ®_, &index_); | 22 ®_, &index_); |
24 } | 23 } |
25 | 24 |
26 intptr_t pp_index() const { | 25 intptr_t pp_index() const { return index_; } |
27 return index_; | |
28 } | |
29 | 26 |
30 RawCode* Target() const { | 27 RawCode* Target() const { |
31 return reinterpret_cast<RawCode*>(object_pool_.ObjectAt(pp_index())); | 28 return reinterpret_cast<RawCode*>(object_pool_.ObjectAt(pp_index())); |
32 } | 29 } |
33 | 30 |
34 void SetTarget(const Code& target) const { | 31 void SetTarget(const Code& target) const { |
35 object_pool_.SetObjectAt(pp_index(), target); | 32 object_pool_.SetObjectAt(pp_index(), target); |
36 // No need to flush the instruction cache, since the code is not modified. | 33 // No need to flush the instruction cache, since the code is not modified. |
37 } | 34 } |
38 | 35 |
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87 } | 84 } |
88 | 85 |
89 | 86 |
90 intptr_t CodePatcher::InstanceCallSizeInBytes() { | 87 intptr_t CodePatcher::InstanceCallSizeInBytes() { |
91 // The instance call instruction sequence has a variable size on ARM64. | 88 // The instance call instruction sequence has a variable size on ARM64. |
92 UNREACHABLE(); | 89 UNREACHABLE(); |
93 return 0; | 90 return 0; |
94 } | 91 } |
95 | 92 |
96 | 93 |
97 RawFunction* CodePatcher::GetUnoptimizedStaticCallAt( | 94 RawFunction* CodePatcher::GetUnoptimizedStaticCallAt(uword return_address, |
98 uword return_address, const Code& code, ICData* ic_data_result) { | 95 const Code& code, |
| 96 ICData* ic_data_result) { |
99 ASSERT(code.ContainsInstructionAt(return_address)); | 97 ASSERT(code.ContainsInstructionAt(return_address)); |
100 CallPattern static_call(return_address, code); | 98 CallPattern static_call(return_address, code); |
101 ICData& ic_data = ICData::Handle(); | 99 ICData& ic_data = ICData::Handle(); |
102 ic_data ^= static_call.IcData(); | 100 ic_data ^= static_call.IcData(); |
103 if (ic_data_result != NULL) { | 101 if (ic_data_result != NULL) { |
104 *ic_data_result = ic_data.raw(); | 102 *ic_data_result = ic_data.raw(); |
105 } | 103 } |
106 return ic_data.GetTargetAt(0); | 104 return ic_data.GetTargetAt(0); |
107 } | 105 } |
108 | 106 |
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150 NativeFunction* target) { | 148 NativeFunction* target) { |
151 ASSERT(code.ContainsInstructionAt(return_address)); | 149 ASSERT(code.ContainsInstructionAt(return_address)); |
152 NativeCallPattern call(return_address, code); | 150 NativeCallPattern call(return_address, code); |
153 *target = call.native_function(); | 151 *target = call.native_function(); |
154 return call.target(); | 152 return call.target(); |
155 } | 153 } |
156 | 154 |
157 } // namespace dart | 155 } // namespace dart |
158 | 156 |
159 #endif // defined TARGET_ARCH_ARM64 | 157 #endif // defined TARGET_ARCH_ARM64 |
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