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
121
122
123
124
125
126
127
128
129
130
|
//===-- ThreadPlanStepOverBreakpoint.cpp ------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/ThreadPlanStepOverBreakpoint.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private-log.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc.
//----------------------------------------------------------------------
ThreadPlanStepOverBreakpoint::ThreadPlanStepOverBreakpoint (Thread &thread) :
ThreadPlan ("Step over breakpoint trap",
thread,
eVoteNo,
eVoteNoOpinion), // We need to report the run since this happens
// first in the thread plan stack when stepping
// over a breakpoint
m_breakpoint_addr (LLDB_INVALID_ADDRESS)
{
m_breakpoint_addr = m_thread.GetRegisterContext()->GetPC();
m_breakpoint_site_id = m_thread.GetProcess().GetBreakpointSiteList().FindIDByAddress (m_breakpoint_addr);
}
ThreadPlanStepOverBreakpoint::~ThreadPlanStepOverBreakpoint ()
{
}
void
ThreadPlanStepOverBreakpoint::GetDescription (Stream *s, lldb::DescriptionLevel level)
{
s->Printf("Single stepping past breakpoint site %d at 0x%llx", m_breakpoint_site_id, (uint64_t)m_breakpoint_addr);
}
bool
ThreadPlanStepOverBreakpoint::ValidatePlan (Stream *error)
{
return true;
}
bool
ThreadPlanStepOverBreakpoint::PlanExplainsStop ()
{
return true;
}
bool
ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr)
{
return false;
}
bool
ThreadPlanStepOverBreakpoint::StopOthers ()
{
return true;
}
StateType
ThreadPlanStepOverBreakpoint::RunState ()
{
return eStateStepping;
}
bool
ThreadPlanStepOverBreakpoint::WillResume (StateType resume_state, bool current_plan)
{
ThreadPlan::WillResume (resume_state, current_plan);
if (current_plan)
{
BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp && bp_site_sp->IsEnabled())
m_thread.GetProcess().DisableBreakpoint (bp_site_sp.get());
}
return true;
}
bool
ThreadPlanStepOverBreakpoint::WillStop ()
{
BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp)
m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
return true;
}
bool
ThreadPlanStepOverBreakpoint::MischiefManaged ()
{
lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC();
if (pc_addr == m_breakpoint_addr)
{
// If we are still at the PC of our breakpoint, then for some reason we didn't
// get a chance to run.
return false;
}
else
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
if (log)
log->Printf("Completed step over breakpoint plan.");
// Otherwise, re-enable the breakpoint we were stepping over, and we're done.
BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp)
m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
ThreadPlan::MischiefManaged ();
return true;
}
}
|
