1 //===-- ThreadPlanTracer.cpp ------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
14 // Other libraries and framework includes
16 #include "lldb/Core/ArchSpec.h"
17 #include "lldb/Core/Debugger.h"
18 #include "lldb/Core/Disassembler.h"
19 #include "lldb/Core/Module.h"
20 #include "lldb/Core/State.h"
21 #include "lldb/Core/StreamFile.h"
22 #include "lldb/Core/Value.h"
23 #include "lldb/Symbol/TypeList.h"
24 #include "lldb/Symbol/TypeSystem.h"
25 #include "lldb/Target/ABI.h"
26 #include "lldb/Target/Process.h"
27 #include "lldb/Target/RegisterContext.h"
28 #include "lldb/Target/SectionLoadList.h"
29 #include "lldb/Target/Target.h"
30 #include "lldb/Target/Thread.h"
31 #include "lldb/Target/ThreadPlan.h"
32 #include "lldb/Utility/DataBufferHeap.h"
33 #include "lldb/Utility/DataExtractor.h"
34 #include "lldb/Utility/Log.h"
37 using namespace lldb_private;
39 #pragma mark ThreadPlanTracer
41 ThreadPlanTracer::ThreadPlanTracer(Thread &thread, lldb::StreamSP &stream_sp)
42 : m_thread(thread), m_single_step(true), m_enabled(false),
43 m_stream_sp(stream_sp) {}
45 ThreadPlanTracer::ThreadPlanTracer(Thread &thread)
46 : m_thread(thread), m_single_step(true), m_enabled(false), m_stream_sp() {}
48 Stream *ThreadPlanTracer::GetLogStream() {
50 return m_stream_sp.get();
52 TargetSP target_sp(m_thread.CalculateTarget());
54 return target_sp->GetDebugger().GetOutputFile().get();
59 void ThreadPlanTracer::Log() {
61 bool show_frame_index = false;
62 bool show_fullpaths = false;
64 Stream *stream = GetLogStream();
66 m_thread.GetStackFrameAtIndex(0)->Dump(stream, show_frame_index,
73 bool ThreadPlanTracer::TracerExplainsStop() {
74 if (m_enabled && m_single_step) {
75 lldb::StopInfoSP stop_info = m_thread.GetStopInfo();
76 return (stop_info->GetStopReason() == eStopReasonTrace);
81 #pragma mark ThreadPlanAssemblyTracer
83 ThreadPlanAssemblyTracer::ThreadPlanAssemblyTracer(Thread &thread,
84 lldb::StreamSP &stream_sp)
85 : ThreadPlanTracer(thread, stream_sp), m_disassembler_sp(), m_intptr_type(),
86 m_register_values() {}
88 ThreadPlanAssemblyTracer::ThreadPlanAssemblyTracer(Thread &thread)
89 : ThreadPlanTracer(thread), m_disassembler_sp(), m_intptr_type(),
90 m_register_values() {}
92 Disassembler *ThreadPlanAssemblyTracer::GetDisassembler() {
93 if (!m_disassembler_sp)
94 m_disassembler_sp = Disassembler::FindPlugin(
95 m_thread.GetProcess()->GetTarget().GetArchitecture(), nullptr, nullptr);
96 return m_disassembler_sp.get();
99 TypeFromUser ThreadPlanAssemblyTracer::GetIntPointerType() {
100 if (!m_intptr_type.IsValid()) {
101 TargetSP target_sp(m_thread.CalculateTarget());
103 TypeSystem *type_system =
104 target_sp->GetScratchTypeSystemForLanguage(nullptr, eLanguageTypeC);
107 TypeFromUser(type_system->GetBuiltinTypeForEncodingAndBitSize(
109 target_sp->GetArchitecture().GetAddressByteSize() * 8));
112 return m_intptr_type;
115 ThreadPlanAssemblyTracer::~ThreadPlanAssemblyTracer() = default;
117 void ThreadPlanAssemblyTracer::TracingStarted() {
118 RegisterContext *reg_ctx = m_thread.GetRegisterContext().get();
120 if (m_register_values.empty())
121 m_register_values.resize(reg_ctx->GetRegisterCount());
124 void ThreadPlanAssemblyTracer::TracingEnded() { m_register_values.clear(); }
126 void ThreadPlanAssemblyTracer::Log() {
127 Stream *stream = GetLogStream();
132 RegisterContext *reg_ctx = m_thread.GetRegisterContext().get();
134 lldb::addr_t pc = reg_ctx->GetPC();
135 ProcessSP process_sp(m_thread.GetProcess());
137 bool addr_valid = false;
138 uint8_t buffer[16] = {0}; // Must be big enough for any single instruction
139 addr_valid = process_sp->GetTarget().GetSectionLoadList().ResolveLoadAddress(
142 pc_addr.Dump(stream, &m_thread, Address::DumpStyleResolvedDescription,
143 Address::DumpStyleModuleWithFileAddress);
144 stream->PutCString(" ");
146 Disassembler *disassembler = GetDisassembler();
149 process_sp->ReadMemory(pc, buffer, sizeof(buffer), err);
152 DataExtractor extractor(buffer, sizeof(buffer),
153 process_sp->GetByteOrder(),
154 process_sp->GetAddressByteSize());
156 bool data_from_file = false;
158 disassembler->DecodeInstructions(pc_addr, extractor, 0, 1, false,
161 disassembler->DecodeInstructions(Address(pc), extractor, 0, 1, false,
164 InstructionList &instruction_list = disassembler->GetInstructionList();
165 const uint32_t max_opcode_byte_size =
166 instruction_list.GetMaxOpcocdeByteSize();
168 if (instruction_list.GetSize()) {
169 const bool show_bytes = true;
170 const bool show_address = true;
171 Instruction *instruction =
172 instruction_list.GetInstructionAtIndex(0).get();
173 const FormatEntity::Entry *disassemble_format =
174 m_thread.GetProcess()
177 .GetDisassemblyFormat();
178 instruction->Dump(stream, max_opcode_byte_size, show_address,
179 show_bytes, nullptr, nullptr, nullptr,
180 disassemble_format, 0);
185 const ABI *abi = process_sp->GetABI().get();
186 TypeFromUser intptr_type = GetIntPointerType();
188 if (abi && intptr_type.IsValid()) {
189 ValueList value_list;
190 const int num_args = 1;
192 for (int arg_index = 0; arg_index < num_args; ++arg_index) {
194 value.SetValueType(Value::eValueTypeScalar);
195 // value.SetContext (Value::eContextTypeClangType,
196 // intptr_type.GetOpaqueQualType());
197 value.SetCompilerType(intptr_type);
198 value_list.PushValue(value);
201 if (abi->GetArgumentValues(m_thread, value_list)) {
202 for (int arg_index = 0; arg_index < num_args; ++arg_index) {
204 "\n\targ[%d]=%llx", arg_index,
205 value_list.GetValueAtIndex(arg_index)->GetScalar().ULongLong());
207 if (arg_index + 1 < num_args)
208 stream->PutCString(", ");
213 RegisterValue reg_value;
214 for (uint32_t reg_num = 0, num_registers = reg_ctx->GetRegisterCount();
215 reg_num < num_registers; ++reg_num) {
216 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoAtIndex(reg_num);
217 if (reg_ctx->ReadRegister(reg_info, reg_value)) {
218 assert(reg_num < m_register_values.size());
219 if (m_register_values[reg_num].GetType() == RegisterValue::eTypeInvalid ||
220 reg_value != m_register_values[reg_num]) {
221 if (reg_value.GetType() != RegisterValue::eTypeInvalid) {
222 stream->PutCString("\n\t");
223 reg_value.Dump(stream, reg_info, true, false, eFormatDefault);
226 m_register_values[reg_num] = reg_value;