1 //===-- ThreadMinidump.cpp --------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "ThreadMinidump.h"
11 #include "ProcessMinidump.h"
12 
13 #include "RegisterContextMinidump_ARM.h"
14 #include "RegisterContextMinidump_ARM64.h"
15 #include "RegisterContextMinidump_x86_32.h"
16 #include "RegisterContextMinidump_x86_64.h"
17 
18 #include "Plugins/Process/Utility/RegisterContextLinux_i386.h"
19 #include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h"
20 #include "Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h"
21 #include "Plugins/Process/elf-core/RegisterUtilities.h"
22 
23 #include "lldb/Target/RegisterContext.h"
24 #include "lldb/Target/StopInfo.h"
25 #include "lldb/Target/Target.h"
26 #include "lldb/Target/Unwind.h"
27 #include "lldb/Utility/DataExtractor.h"
28 #include "lldb/Utility/Log.h"
29 
30 
31 using namespace lldb;
32 using namespace lldb_private;
33 using namespace minidump;
34 
35 ThreadMinidump::ThreadMinidump(Process &process, const MinidumpThread &td,
36                                llvm::ArrayRef<uint8_t> gpregset_data)
37     : Thread(process, td.thread_id), m_thread_reg_ctx_sp(),
38       m_gpregset_data(gpregset_data) {}
39 
40 ThreadMinidump::~ThreadMinidump() {}
41 
42 void ThreadMinidump::RefreshStateAfterStop() {}
43 
44 RegisterContextSP ThreadMinidump::GetRegisterContext() {
45   if (!m_reg_context_sp) {
46     m_reg_context_sp = CreateRegisterContextForFrame(nullptr);
47   }
48   return m_reg_context_sp;
49 }
50 
51 RegisterContextSP
52 ThreadMinidump::CreateRegisterContextForFrame(StackFrame *frame) {
53   RegisterContextSP reg_ctx_sp;
54   uint32_t concrete_frame_idx = 0;
55 
56   if (frame)
57     concrete_frame_idx = frame->GetConcreteFrameIndex();
58 
59   if (concrete_frame_idx == 0) {
60     if (m_thread_reg_ctx_sp)
61       return m_thread_reg_ctx_sp;
62 
63     ProcessMinidump *process =
64         static_cast<ProcessMinidump *>(GetProcess().get());
65     ArchSpec arch = process->GetArchitecture();
66     RegisterInfoInterface *reg_interface = nullptr;
67 
68     // TODO write other register contexts and add them here
69     switch (arch.GetMachine()) {
70     case llvm::Triple::x86: {
71       reg_interface = new RegisterContextLinux_i386(arch);
72       lldb::DataBufferSP buf =
73           ConvertMinidumpContext_x86_32(m_gpregset_data, reg_interface);
74       DataExtractor gpregset(buf, lldb::eByteOrderLittle, 4);
75       m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_x86_64(
76           *this, reg_interface, gpregset, {}));
77       break;
78     }
79     case llvm::Triple::x86_64: {
80       reg_interface = new RegisterContextLinux_x86_64(arch);
81       lldb::DataBufferSP buf =
82           ConvertMinidumpContext_x86_64(m_gpregset_data, reg_interface);
83       DataExtractor gpregset(buf, lldb::eByteOrderLittle, 8);
84       m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_x86_64(
85           *this, reg_interface, gpregset, {}));
86       break;
87     }
88     case llvm::Triple::aarch64: {
89       DataExtractor data(m_gpregset_data.data(), m_gpregset_data.size(),
90                          lldb::eByteOrderLittle, 8);
91       m_thread_reg_ctx_sp.reset(new RegisterContextMinidump_ARM64(*this, data));
92       break;
93     }
94     case llvm::Triple::arm: {
95       DataExtractor data(m_gpregset_data.data(), m_gpregset_data.size(),
96                          lldb::eByteOrderLittle, 8);
97       const bool apple = arch.GetTriple().getVendor() == llvm::Triple::Apple;
98       m_thread_reg_ctx_sp.reset(
99           new RegisterContextMinidump_ARM(*this, data, apple));
100       break;
101     }
102     default:
103       break;
104     }
105 
106     reg_ctx_sp = m_thread_reg_ctx_sp;
107   } else if (m_unwinder_ap) {
108     reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame(frame);
109   }
110 
111   return reg_ctx_sp;
112 }
113 
114 bool ThreadMinidump::CalculateStopInfo() { return false; }
115