blob: 7cda4aeb2e18b8de5280a845dd05faf1f21276ac (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
//===-- Unwind.h ------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_Unwind_h_
#define liblldb_Unwind_h_
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Host/Mutex.h"
namespace lldb_private {
class Unwind
{
protected:
//------------------------------------------------------------------
// Classes that inherit from Unwind can see and modify these
//------------------------------------------------------------------
Unwind(Thread &thread) :
m_thread (thread),
m_unwind_mutex()
{
}
public:
virtual
~Unwind()
{
}
void
Clear()
{
Mutex::Locker locker(m_unwind_mutex);
DoClear();
}
uint32_t
GetFrameCount()
{
Mutex::Locker locker(m_unwind_mutex);
return DoGetFrameCount();
}
uint32_t
GetFramesUpTo (uint32_t end_idx)
{
lldb::addr_t cfa;
lldb::addr_t pc;
uint32_t idx;
for (idx = 0; idx < end_idx; idx++)
{
if (!DoGetFrameInfoAtIndex (idx, cfa, pc))
{
break;
}
}
return idx;
}
bool
GetFrameInfoAtIndex (uint32_t frame_idx,
lldb::addr_t& cfa,
lldb::addr_t& pc)
{
Mutex::Locker locker(m_unwind_mutex);
return DoGetFrameInfoAtIndex (frame_idx, cfa, pc);
}
lldb::RegisterContextSP
CreateRegisterContextForFrame (StackFrame *frame)
{
Mutex::Locker locker(m_unwind_mutex);
return DoCreateRegisterContextForFrame (frame);
}
Thread &
GetThread()
{
return m_thread;
}
protected:
//------------------------------------------------------------------
// Classes that inherit from Unwind can see and modify these
//------------------------------------------------------------------
virtual void
DoClear() = 0;
virtual uint32_t
DoGetFrameCount() = 0;
virtual bool
DoGetFrameInfoAtIndex (uint32_t frame_idx,
lldb::addr_t& cfa,
lldb::addr_t& pc) = 0;
virtual lldb::RegisterContextSP
DoCreateRegisterContextForFrame (StackFrame *frame) = 0;
Thread &m_thread;
Mutex m_unwind_mutex;
private:
DISALLOW_COPY_AND_ASSIGN (Unwind);
};
} // namespace lldb_private
#endif // liblldb_Unwind_h_
|