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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, 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" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_DBC) | 6 #if defined(TARGET_ARCH_DBC) |
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/debugger.h" | 10 #include "vm/debugger.h" |
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36 const Instructions& instrs = Instructions::Handle(code.instructions()); | 36 const Instructions& instrs = Instructions::Handle(code.instructions()); |
37 { | 37 { |
38 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.size()); | 38 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.size()); |
39 saved_value_ = *CallInstructionFromReturnAddress(pc_); | 39 saved_value_ = *CallInstructionFromReturnAddress(pc_); |
40 switch (breakpoint_kind_) { | 40 switch (breakpoint_kind_) { |
41 case RawPcDescriptors::kIcCall: | 41 case RawPcDescriptors::kIcCall: |
42 case RawPcDescriptors::kUnoptStaticCall: { | 42 case RawPcDescriptors::kUnoptStaticCall: { |
43 // DebugBreak has an A operand matching the call it replaces. | 43 // DebugBreak has an A operand matching the call it replaces. |
44 // This ensures that Return instructions continue to work - as they | 44 // This ensures that Return instructions continue to work - as they |
45 // look at calls to figure out how many arguments to drop. | 45 // look at calls to figure out how many arguments to drop. |
46 *CallInstructionFromReturnAddress(pc_) = | 46 *CallInstructionFromReturnAddress(pc_) = Bytecode::Encode( |
47 Bytecode::Encode(Bytecode::kDebugBreak, | 47 Bytecode::kDebugBreak, Bytecode::DecodeArgc(saved_value_), 0, 0); |
48 Bytecode::DecodeArgc(saved_value_), | |
49 0, | |
50 0); | |
51 break; | 48 break; |
52 } | 49 } |
53 | 50 |
54 case RawPcDescriptors::kRuntimeCall: { | 51 case RawPcDescriptors::kRuntimeCall: { |
55 *CallInstructionFromReturnAddress(pc_) = Bytecode::kDebugBreak; | 52 *CallInstructionFromReturnAddress(pc_) = Bytecode::kDebugBreak; |
56 break; | 53 break; |
57 } | 54 } |
58 | 55 |
59 default: | 56 default: |
60 UNREACHABLE(); | 57 UNREACHABLE(); |
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99 } | 96 } |
100 } | 97 } |
101 is_enabled_ = false; | 98 is_enabled_ = false; |
102 } | 99 } |
103 | 100 |
104 #endif // !PRODUCT | 101 #endif // !PRODUCT |
105 | 102 |
106 } // namespace dart | 103 } // namespace dart |
107 | 104 |
108 #endif // defined TARGET_ARCH_DBC | 105 #endif // defined TARGET_ARCH_DBC |
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