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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
//===-- ThreadPlanCallFunction.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/ThreadPlanCallFunction.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private-log.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlanRunToAddress.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ThreadPlanCallFunction: Plan to call a single function
//----------------------------------------------------------------------
ThreadPlanCallFunction::ThreadPlanCallFunction (Thread &thread,
Address &function,
lldb::addr_t arg,
bool stop_other_threads,
bool discard_on_error,
lldb::addr_t *this_arg) :
ThreadPlan (ThreadPlan::eKindCallFunction, "Call function plan", thread, eVoteNoOpinion, eVoteNoOpinion),
m_valid (false),
m_stop_other_threads (stop_other_threads),
m_arg_addr (arg),
m_args (NULL),
m_process (thread.GetProcess()),
m_thread (thread)
{
SetOkayToDiscard (discard_on_error);
Process& process = thread.GetProcess();
Target& target = process.GetTarget();
const ABI *abi = process.GetABI();
if (!abi)
return;
lldb::addr_t spBelowRedZone = thread.GetRegisterContext()->GetSP() - abi->GetRedZoneSize();
SymbolContextList contexts;
SymbolContext context;
ModuleSP executableModuleSP (target.GetExecutableModule());
if (!executableModuleSP ||
!executableModuleSP->FindSymbolsWithNameAndType(ConstString ("start"), eSymbolTypeCode, contexts))
return;
contexts.GetContextAtIndex(0, context);
m_start_addr = context.symbol->GetValue();
lldb::addr_t StartLoadAddr = m_start_addr.GetLoadAddress(&target);
if (!thread.SaveFrameZeroState(m_register_backup))
return;
m_function_addr = function;
lldb::addr_t FunctionLoadAddr = m_function_addr.GetLoadAddress(&target);
if (!abi->PrepareTrivialCall(thread,
spBelowRedZone,
FunctionLoadAddr,
StartLoadAddr,
m_arg_addr,
this_arg))
return;
m_valid = true;
}
ThreadPlanCallFunction::ThreadPlanCallFunction (Thread &thread,
Address &function,
ValueList &args,
bool stop_other_threads,
bool discard_on_error) :
ThreadPlan (ThreadPlan::eKindCallFunction, "Call function plan", thread, eVoteNoOpinion, eVoteNoOpinion),
m_valid (false),
m_stop_other_threads (stop_other_threads),
m_arg_addr (0),
m_args (&args),
m_process (thread.GetProcess()),
m_thread (thread)
{
SetOkayToDiscard (discard_on_error);
Process& process = thread.GetProcess();
Target& target = process.GetTarget();
const ABI *abi = process.GetABI();
if(!abi)
return;
lldb::addr_t spBelowRedZone = thread.GetRegisterContext()->GetSP() - abi->GetRedZoneSize();
SymbolContextList contexts;
SymbolContext context;
ModuleSP executableModuleSP (target.GetExecutableModule());
if (!executableModuleSP ||
!executableModuleSP->FindSymbolsWithNameAndType(ConstString ("start"), eSymbolTypeCode, contexts))
return;
contexts.GetContextAtIndex(0, context);
m_start_addr = context.symbol->GetValue();
lldb::addr_t StartLoadAddr = m_start_addr.GetLoadAddress(&target);
if(!thread.SaveFrameZeroState(m_register_backup))
return;
m_function_addr = function;
lldb::addr_t FunctionLoadAddr = m_function_addr.GetLoadAddress(&target);
if (!abi->PrepareNormalCall(thread,
spBelowRedZone,
FunctionLoadAddr,
StartLoadAddr,
*m_args))
return;
m_valid = true;
}
ThreadPlanCallFunction::~ThreadPlanCallFunction ()
{
}
void
ThreadPlanCallFunction::GetDescription (Stream *s, lldb::DescriptionLevel level)
{
if (level == lldb::eDescriptionLevelBrief)
{
s->Printf("Function call thread plan");
}
else
{
if (m_args)
s->Printf("Thread plan to call 0x%llx with parsed arguments", m_function_addr.GetLoadAddress(&m_process.GetTarget()), m_arg_addr);
else
s->Printf("Thread plan to call 0x%llx void * argument at: 0x%llx", m_function_addr.GetLoadAddress(&m_process.GetTarget()), m_arg_addr);
}
}
bool
ThreadPlanCallFunction::ValidatePlan (Stream *error)
{
if (!m_valid)
return false;
return true;
}
bool
ThreadPlanCallFunction::PlanExplainsStop ()
{
// If the subplan is running, any crashes are attributable to us.
return (m_subplan_sp.get() != NULL);
}
bool
ThreadPlanCallFunction::ShouldStop (Event *event_ptr)
{
if (PlanExplainsStop())
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
if (log)
{
RegisterContext *reg_ctx = m_thread.GetRegisterContext();
log->PutCString("Function completed. Register state was:");
for (uint32_t register_index = 0, num_registers = reg_ctx->GetRegisterCount();
register_index < num_registers;
++register_index)
{
const char *register_name = reg_ctx->GetRegisterName(register_index);
uint64_t register_value = reg_ctx->ReadRegisterAsUnsigned(register_index, LLDB_INVALID_ADDRESS);
log->Printf(" %s = 0x%llx", register_name, register_value);
}
}
m_thread.RestoreSaveFrameZero(m_register_backup);
m_thread.ClearStackFrames();
SetPlanComplete();
return true;
}
else
{
return false;
}
}
bool
ThreadPlanCallFunction::StopOthers ()
{
return m_stop_other_threads;
}
void
ThreadPlanCallFunction::SetStopOthers (bool new_value)
{
if (m_subplan_sp)
{
ThreadPlanRunToAddress *address_plan = static_cast<ThreadPlanRunToAddress *>(m_subplan_sp.get());
address_plan->SetStopOthers(new_value);
}
m_stop_other_threads = new_value;
}
StateType
ThreadPlanCallFunction::RunState ()
{
return eStateRunning;
}
void
ThreadPlanCallFunction::DidPush ()
{
m_subplan_sp.reset(new ThreadPlanRunToAddress(m_thread, m_start_addr, m_stop_other_threads));
m_thread.QueueThreadPlan(m_subplan_sp, false);
}
bool
ThreadPlanCallFunction::WillStop ()
{
return true;
}
bool
ThreadPlanCallFunction::MischiefManaged ()
{
if (IsPlanComplete())
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
if (log)
log->Printf("Completed call function plan.");
ThreadPlan::MischiefManaged ();
return true;
}
else
{
return false;
}
}
|
