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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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_MIPS) | 6 #if defined(TARGET_ARCH_MIPS) |
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" |
11 #include "vm/instructions.h" | 11 #include "vm/instructions.h" |
12 #include "vm/stub_code.h" | 12 #include "vm/stub_code.h" |
13 | 13 |
14 namespace dart { | 14 namespace dart { |
15 | 15 |
16 uword CodeBreakpoint::OrigStubAddress() const { | 16 uword CodeBreakpoint::OrigStubAddress() const { |
17 return saved_value_; | 17 return saved_value_; |
18 } | 18 } |
19 | 19 |
20 | 20 |
21 void CodeBreakpoint::PatchCode() { | 21 void CodeBreakpoint::PatchCode() { |
22 ASSERT(!is_enabled_); | 22 ASSERT(!is_enabled_); |
| 23 StubCode* stub_code = Isolate::Current()->stub_code(); |
| 24 uword stub_target = 0; |
| 25 switch (breakpoint_kind_) { |
| 26 case RawPcDescriptors::kIcCall: |
| 27 case RawPcDescriptors::kUnoptStaticCall: |
| 28 stub_target = stub_code->ICCallBreakpointEntryPoint(); |
| 29 break; |
| 30 case RawPcDescriptors::kClosureCall: |
| 31 stub_target = stub_code->ClosureCallBreakpointEntryPoint(); |
| 32 break; |
| 33 case RawPcDescriptors::kRuntimeCall: |
| 34 stub_target = stub_code->RuntimeCallBreakpointEntryPoint(); |
| 35 break; |
| 36 default: |
| 37 UNREACHABLE(); |
| 38 } |
23 const Code& code = Code::Handle(code_); | 39 const Code& code = Code::Handle(code_); |
24 const Instructions& instrs = Instructions::Handle(code.instructions()); | 40 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
25 Isolate* isolate = Isolate::Current(); | 41 CodePatcher::PatchStaticCallAt(pc_, code, stub_target); |
26 { | |
27 WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size()); | |
28 switch (breakpoint_kind_) { | |
29 case RawPcDescriptors::kIcCall: | |
30 case RawPcDescriptors::kUnoptStaticCall: { | |
31 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); | |
32 CodePatcher::PatchStaticCallAt( | |
33 pc_, code, isolate->stub_code()->ICCallBreakpointEntryPoint()); | |
34 break; | |
35 } | |
36 case RawPcDescriptors::kClosureCall: { | |
37 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); | |
38 CodePatcher::PatchStaticCallAt( | |
39 pc_, code, isolate->stub_code()->ClosureCallBreakpointEntryPoint()); | |
40 break; | |
41 } | |
42 case RawPcDescriptors::kRuntimeCall: { | |
43 saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); | |
44 CodePatcher::PatchStaticCallAt( | |
45 pc_, code, isolate->stub_code()->RuntimeCallBreakpointEntryPoint()); | |
46 break; | |
47 } | |
48 default: | |
49 UNREACHABLE(); | |
50 } | |
51 } | |
52 is_enabled_ = true; | 42 is_enabled_ = true; |
53 } | 43 } |
54 | 44 |
55 | 45 |
56 void CodeBreakpoint::RestoreCode() { | 46 void CodeBreakpoint::RestoreCode() { |
57 ASSERT(is_enabled_); | 47 ASSERT(is_enabled_); |
58 const Code& code = Code::Handle(code_); | 48 const Code& code = Code::Handle(code_); |
59 const Instructions& instrs = Instructions::Handle(code.instructions()); | 49 switch (breakpoint_kind_) { |
60 { | 50 case RawPcDescriptors::kIcCall: |
61 WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size()); | 51 case RawPcDescriptors::kUnoptStaticCall: |
62 switch (breakpoint_kind_) { | 52 case RawPcDescriptors::kClosureCall: |
63 case RawPcDescriptors::kIcCall: | 53 case RawPcDescriptors::kRuntimeCall: { |
64 case RawPcDescriptors::kUnoptStaticCall: | 54 CodePatcher::PatchStaticCallAt(pc_, code, saved_value_); |
65 case RawPcDescriptors::kClosureCall: | 55 break; |
66 case RawPcDescriptors::kRuntimeCall: { | |
67 CodePatcher::PatchStaticCallAt(pc_, code, saved_value_); | |
68 break; | |
69 } | |
70 default: | |
71 UNREACHABLE(); | |
72 } | 56 } |
| 57 default: |
| 58 UNREACHABLE(); |
73 } | 59 } |
74 is_enabled_ = false; | 60 is_enabled_ = false; |
75 } | 61 } |
76 | 62 |
77 } // namespace dart | 63 } // namespace dart |
78 | 64 |
79 #endif // defined TARGET_ARCH_MIPS | 65 #endif // defined TARGET_ARCH_MIPS |
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