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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/debugger.h" | 8 #include "vm/debugger.h" |
9 | 9 |
10 #include "vm/code_patcher.h" | 10 #include "vm/code_patcher.h" |
11 #include "vm/cpu.h" | 11 #include "vm/cpu.h" |
12 #include "vm/disassembler.h" | 12 #include "vm/disassembler.h" |
13 #include "vm/object.h" | 13 #include "vm/object.h" |
14 #include "vm/os.h" | 14 #include "vm/os.h" |
15 #include "vm/stack_frame.h" | 15 #include "vm/stack_frame.h" |
16 #include "vm/stub_code.h" | 16 #include "vm/stub_code.h" |
17 | 17 |
18 namespace dart { | 18 namespace dart { |
19 | 19 |
20 #ifndef PRODUCT | 20 #ifndef PRODUCT |
21 | 21 |
22 RawCode* CodeBreakpoint::OrigStubAddress() const { | 22 RawCode* CodeBreakpoint::OrigStubAddress() const { |
23 return saved_value_; | 23 return saved_value_; |
24 } | 24 } |
25 | 25 |
26 | |
27 void CodeBreakpoint::PatchCode() { | 26 void CodeBreakpoint::PatchCode() { |
28 ASSERT(!is_enabled_); | 27 ASSERT(!is_enabled_); |
29 const Code& code = Code::Handle(code_); | 28 const Code& code = Code::Handle(code_); |
30 const Instructions& instrs = Instructions::Handle(code.instructions()); | 29 const Instructions& instrs = Instructions::Handle(code.instructions()); |
31 Code& stub_target = Code::Handle(); | 30 Code& stub_target = Code::Handle(); |
32 { | 31 { |
33 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.Size()); | 32 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.Size()); |
34 switch (breakpoint_kind_) { | 33 switch (breakpoint_kind_) { |
35 case RawPcDescriptors::kIcCall: | 34 case RawPcDescriptors::kIcCall: |
36 case RawPcDescriptors::kUnoptStaticCall: { | 35 case RawPcDescriptors::kUnoptStaticCall: { |
37 stub_target = StubCode::ICCallBreakpoint_entry()->code(); | 36 stub_target = StubCode::ICCallBreakpoint_entry()->code(); |
38 break; | 37 break; |
39 } | 38 } |
40 case RawPcDescriptors::kRuntimeCall: { | 39 case RawPcDescriptors::kRuntimeCall: { |
41 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); | 40 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
42 stub_target = StubCode::RuntimeCallBreakpoint_entry()->code(); | 41 stub_target = StubCode::RuntimeCallBreakpoint_entry()->code(); |
43 break; | 42 break; |
44 } | 43 } |
45 default: | 44 default: |
46 UNREACHABLE(); | 45 UNREACHABLE(); |
47 } | 46 } |
48 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); | 47 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
49 CodePatcher::PatchStaticCallAt(pc_, code, stub_target); | 48 CodePatcher::PatchStaticCallAt(pc_, code, stub_target); |
50 } | 49 } |
51 is_enabled_ = true; | 50 is_enabled_ = true; |
52 } | 51 } |
53 | 52 |
54 | |
55 void CodeBreakpoint::RestoreCode() { | 53 void CodeBreakpoint::RestoreCode() { |
56 ASSERT(is_enabled_); | 54 ASSERT(is_enabled_); |
57 const Code& code = Code::Handle(code_); | 55 const Code& code = Code::Handle(code_); |
58 const Instructions& instrs = Instructions::Handle(code.instructions()); | 56 const Instructions& instrs = Instructions::Handle(code.instructions()); |
59 { | 57 { |
60 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.Size()); | 58 WritableInstructionsScope writable(instrs.PayloadStart(), instrs.Size()); |
61 switch (breakpoint_kind_) { | 59 switch (breakpoint_kind_) { |
62 case RawPcDescriptors::kIcCall: | 60 case RawPcDescriptors::kIcCall: |
63 case RawPcDescriptors::kUnoptStaticCall: | 61 case RawPcDescriptors::kUnoptStaticCall: |
64 case RawPcDescriptors::kRuntimeCall: { | 62 case RawPcDescriptors::kRuntimeCall: { |
65 CodePatcher::PatchStaticCallAt(pc_, code, Code::Handle(saved_value_)); | 63 CodePatcher::PatchStaticCallAt(pc_, code, Code::Handle(saved_value_)); |
66 break; | 64 break; |
67 } | 65 } |
68 default: | 66 default: |
69 UNREACHABLE(); | 67 UNREACHABLE(); |
70 } | 68 } |
71 } | 69 } |
72 is_enabled_ = false; | 70 is_enabled_ = false; |
73 } | 71 } |
74 | 72 |
75 #endif // !PRODUCT | 73 #endif // !PRODUCT |
76 | 74 |
77 } // namespace dart | 75 } // namespace dart |
78 | 76 |
79 #endif // defined TARGET_ARCH_IA32 | 77 #endif // defined TARGET_ARCH_IA32 |
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