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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 #include "vm/instructions.h" | 6 #include "vm/instructions.h" |
| 7 #include "vm/signal_handler.h" |
7 #include "vm/simulator.h" | 8 #include "vm/simulator.h" |
8 #include "vm/signal_handler.h" | |
9 #if defined(HOST_OS_ANDROID) | 9 #if defined(HOST_OS_ANDROID) |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 | 12 |
13 uintptr_t SignalHandler::GetProgramCounter(const mcontext_t& mcontext) { | 13 uintptr_t SignalHandler::GetProgramCounter(const mcontext_t& mcontext) { |
14 uintptr_t pc = 0; | 14 uintptr_t pc = 0; |
15 | 15 |
16 #if defined(HOST_ARCH_IA32) | 16 #if defined(HOST_ARCH_IA32) |
17 pc = static_cast<uintptr_t>(mcontext.gregs[REG_EIP]); | 17 pc = static_cast<uintptr_t>(mcontext.gregs[REG_EIP]); |
18 #elif defined(HOST_ARCH_X64) | 18 #elif defined(HOST_ARCH_X64) |
19 pc = static_cast<uintptr_t>(mcontext.gregs[REG_RIP]); | 19 pc = static_cast<uintptr_t>(mcontext.gregs[REG_RIP]); |
20 #elif defined(HOST_ARCH_ARM) | 20 #elif defined(HOST_ARCH_ARM) |
21 pc = static_cast<uintptr_t>(mcontext.arm_pc); | 21 pc = static_cast<uintptr_t>(mcontext.arm_pc); |
22 #elif defined(HOST_ARCH_ARM64) | 22 #elif defined(HOST_ARCH_ARM64) |
23 pc = static_cast<uintptr_t>(mcontext.pc); | 23 pc = static_cast<uintptr_t>(mcontext.pc); |
24 #else | 24 #else |
25 #error Unsupported architecture. | 25 #error Unsupported architecture. |
26 #endif // HOST_ARCH_... | 26 #endif // HOST_ARCH_... |
27 return pc; | 27 return pc; |
28 } | 28 } |
29 | 29 |
30 | |
31 uintptr_t SignalHandler::GetFramePointer(const mcontext_t& mcontext) { | 30 uintptr_t SignalHandler::GetFramePointer(const mcontext_t& mcontext) { |
32 uintptr_t fp = 0; | 31 uintptr_t fp = 0; |
33 | 32 |
34 #if defined(HOST_ARCH_IA32) | 33 #if defined(HOST_ARCH_IA32) |
35 fp = static_cast<uintptr_t>(mcontext.gregs[REG_EBP]); | 34 fp = static_cast<uintptr_t>(mcontext.gregs[REG_EBP]); |
36 #elif defined(HOST_ARCH_X64) | 35 #elif defined(HOST_ARCH_X64) |
37 fp = static_cast<uintptr_t>(mcontext.gregs[REG_RBP]); | 36 fp = static_cast<uintptr_t>(mcontext.gregs[REG_RBP]); |
38 #elif defined(HOST_ARCH_ARM) | 37 #elif defined(HOST_ARCH_ARM) |
39 // B1.3.3 Program Status Registers (PSRs) | 38 // B1.3.3 Program Status Registers (PSRs) |
40 if ((mcontext.arm_cpsr & (1 << 5)) != 0) { | 39 if ((mcontext.arm_cpsr & (1 << 5)) != 0) { |
41 // Thumb mode. | 40 // Thumb mode. |
42 fp = static_cast<uintptr_t>(mcontext.arm_r7); | 41 fp = static_cast<uintptr_t>(mcontext.arm_r7); |
43 } else { | 42 } else { |
44 // ARM mode. | 43 // ARM mode. |
45 fp = static_cast<uintptr_t>(mcontext.arm_fp); | 44 fp = static_cast<uintptr_t>(mcontext.arm_fp); |
46 } | 45 } |
47 #elif defined(HOST_ARCH_ARM64) | 46 #elif defined(HOST_ARCH_ARM64) |
48 fp = static_cast<uintptr_t>(mcontext.regs[29]); | 47 fp = static_cast<uintptr_t>(mcontext.regs[29]); |
49 #else | 48 #else |
50 #error Unsupported architecture. | 49 #error Unsupported architecture. |
51 #endif // HOST_ARCH_... | 50 #endif // HOST_ARCH_... |
52 | 51 |
53 return fp; | 52 return fp; |
54 } | 53 } |
55 | 54 |
56 | |
57 uintptr_t SignalHandler::GetCStackPointer(const mcontext_t& mcontext) { | 55 uintptr_t SignalHandler::GetCStackPointer(const mcontext_t& mcontext) { |
58 uintptr_t sp = 0; | 56 uintptr_t sp = 0; |
59 | 57 |
60 #if defined(HOST_ARCH_IA32) | 58 #if defined(HOST_ARCH_IA32) |
61 sp = static_cast<uintptr_t>(mcontext.gregs[REG_ESP]); | 59 sp = static_cast<uintptr_t>(mcontext.gregs[REG_ESP]); |
62 #elif defined(HOST_ARCH_X64) | 60 #elif defined(HOST_ARCH_X64) |
63 sp = static_cast<uintptr_t>(mcontext.gregs[REG_RSP]); | 61 sp = static_cast<uintptr_t>(mcontext.gregs[REG_RSP]); |
64 #elif defined(HOST_ARCH_ARM) | 62 #elif defined(HOST_ARCH_ARM) |
65 sp = static_cast<uintptr_t>(mcontext.arm_sp); | 63 sp = static_cast<uintptr_t>(mcontext.arm_sp); |
66 #elif defined(HOST_ARCH_ARM64) | 64 #elif defined(HOST_ARCH_ARM64) |
67 sp = static_cast<uintptr_t>(mcontext.sp); | 65 sp = static_cast<uintptr_t>(mcontext.sp); |
68 #else | 66 #else |
69 #error Unsupported architecture. | 67 #error Unsupported architecture. |
70 #endif // HOST_ARCH_... | 68 #endif // HOST_ARCH_... |
71 return sp; | 69 return sp; |
72 } | 70 } |
73 | 71 |
74 | |
75 uintptr_t SignalHandler::GetDartStackPointer(const mcontext_t& mcontext) { | 72 uintptr_t SignalHandler::GetDartStackPointer(const mcontext_t& mcontext) { |
76 #if defined(TARGET_ARCH_ARM64) && !defined(USING_SIMULATOR) | 73 #if defined(TARGET_ARCH_ARM64) && !defined(USING_SIMULATOR) |
77 return static_cast<uintptr_t>(mcontext.regs[SPREG]); | 74 return static_cast<uintptr_t>(mcontext.regs[SPREG]); |
78 #else | 75 #else |
79 return GetCStackPointer(mcontext); | 76 return GetCStackPointer(mcontext); |
80 #endif | 77 #endif |
81 } | 78 } |
82 | 79 |
83 | |
84 uintptr_t SignalHandler::GetLinkRegister(const mcontext_t& mcontext) { | 80 uintptr_t SignalHandler::GetLinkRegister(const mcontext_t& mcontext) { |
85 uintptr_t lr = 0; | 81 uintptr_t lr = 0; |
86 | 82 |
87 #if defined(HOST_ARCH_IA32) | 83 #if defined(HOST_ARCH_IA32) |
88 lr = 0; | 84 lr = 0; |
89 #elif defined(HOST_ARCH_X64) | 85 #elif defined(HOST_ARCH_X64) |
90 lr = 0; | 86 lr = 0; |
91 #elif defined(HOST_ARCH_ARM) | 87 #elif defined(HOST_ARCH_ARM) |
92 lr = static_cast<uintptr_t>(mcontext.arm_lr); | 88 lr = static_cast<uintptr_t>(mcontext.arm_lr); |
93 #elif defined(HOST_ARCH_ARM64) | 89 #elif defined(HOST_ARCH_ARM64) |
94 lr = static_cast<uintptr_t>(mcontext.regs[30]); | 90 lr = static_cast<uintptr_t>(mcontext.regs[30]); |
95 #else | 91 #else |
96 #error Unsupported architecture. | 92 #error Unsupported architecture. |
97 #endif // HOST_ARCH_... | 93 #endif // HOST_ARCH_... |
98 return lr; | 94 return lr; |
99 } | 95 } |
100 | 96 |
101 | |
102 void SignalHandler::InstallImpl(SignalAction action) { | 97 void SignalHandler::InstallImpl(SignalAction action) { |
103 struct sigaction act; | 98 struct sigaction act; |
104 memset(&act, 0, sizeof(act)); | 99 memset(&act, 0, sizeof(act)); |
105 act.sa_sigaction = action; | 100 act.sa_sigaction = action; |
106 sigemptyset(&act.sa_mask); | 101 sigemptyset(&act.sa_mask); |
107 act.sa_flags = SA_RESTART | SA_SIGINFO; | 102 act.sa_flags = SA_RESTART | SA_SIGINFO; |
108 int r = sigaction(SIGPROF, &act, NULL); | 103 int r = sigaction(SIGPROF, &act, NULL); |
109 ASSERT(r == 0); | 104 ASSERT(r == 0); |
110 } | 105 } |
111 | 106 |
112 | |
113 void SignalHandler::Remove() { | 107 void SignalHandler::Remove() { |
114 // Ignore future SIGPROF signals because by default SIGPROF will terminate | 108 // Ignore future SIGPROF signals because by default SIGPROF will terminate |
115 // the process and we may have some signals in flight. | 109 // the process and we may have some signals in flight. |
116 struct sigaction act; | 110 struct sigaction act; |
117 memset(&act, 0, sizeof(act)); | 111 memset(&act, 0, sizeof(act)); |
118 act.sa_handler = SIG_IGN; | 112 act.sa_handler = SIG_IGN; |
119 sigemptyset(&act.sa_mask); | 113 sigemptyset(&act.sa_mask); |
120 int r = sigaction(SIGPROF, &act, NULL); | 114 int r = sigaction(SIGPROF, &act, NULL); |
121 ASSERT(r == 0); | 115 ASSERT(r == 0); |
122 } | 116 } |
123 | 117 |
124 | |
125 } // namespace dart | 118 } // namespace dart |
126 | 119 |
127 #endif // defined(HOST_OS_ANDROID) | 120 #endif // defined(HOST_OS_ANDROID) |
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