1 //===-- RegisterContextHistory.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
11 #include "lldb/lldb-private.h"
12 #include "lldb/Core/Address.h"
13 #include "lldb/Core/AddressRange.h"
14 #include "lldb/Core/DataBufferHeap.h"
15 #include "lldb/Core/Log.h"
16 #include "lldb/Core/Module.h"
17 #include "lldb/Core/RegisterValue.h"
18 #include "lldb/Core/Value.h"
19 #include "lldb/Expression/DWARFExpression.h"
20 #include "lldb/Symbol/FuncUnwinders.h"
21 #include "lldb/Symbol/Function.h"
22 #include "lldb/Symbol/ObjectFile.h"
23 #include "lldb/Symbol/SymbolContext.h"
24 #include "lldb/Symbol/Symbol.h"
25 #include "lldb/Target/ABI.h"
26 #include "lldb/Target/ExecutionContext.h"
27 #include "lldb/Target/Process.h"
28 #include "lldb/Target/StackFrame.h"
29 #include "lldb/Target/Target.h"
30 #include "lldb/Target/Thread.h"
31 #include "lldb/Target/DynamicLoader.h"
32
33 #include "RegisterContextHistory.h"
34
35 using namespace lldb;
36 using namespace lldb_private;
37
RegisterContextHistory(Thread & thread,uint32_t concrete_frame_idx,uint32_t address_byte_size,addr_t pc_value)38 RegisterContextHistory::RegisterContextHistory (Thread &thread, uint32_t concrete_frame_idx, uint32_t address_byte_size, addr_t pc_value) :
39 RegisterContext (thread, concrete_frame_idx),
40 m_pc_value (pc_value)
41 {
42 m_reg_set0.name = "General Purpose Registers";
43 m_reg_set0.short_name = "GPR";
44 m_reg_set0.num_registers = 1;
45 m_reg_set0.registers = new uint32_t(0);
46
47 m_pc_reg_info.name = "pc";
48 m_pc_reg_info.alt_name = "pc";
49 m_pc_reg_info.byte_offset = 0;
50 m_pc_reg_info.byte_size = address_byte_size;
51 m_pc_reg_info.encoding = eEncodingUint;
52 m_pc_reg_info.format = eFormatPointer;
53 m_pc_reg_info.invalidate_regs = NULL;
54 m_pc_reg_info.value_regs = NULL;
55 m_pc_reg_info.kinds[eRegisterKindGCC] = LLDB_INVALID_REGNUM;
56 m_pc_reg_info.kinds[eRegisterKindDWARF] = LLDB_INVALID_REGNUM;
57 m_pc_reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
58 m_pc_reg_info.kinds[eRegisterKindGDB] = LLDB_INVALID_REGNUM;
59 m_pc_reg_info.kinds[eRegisterKindLLDB] = LLDB_INVALID_REGNUM;
60 }
61
~RegisterContextHistory()62 RegisterContextHistory::~RegisterContextHistory ()
63 {
64 delete m_reg_set0.registers;
65 delete m_pc_reg_info.invalidate_regs;
66 delete m_pc_reg_info.value_regs;
67 }
68
69 void
InvalidateAllRegisters()70 RegisterContextHistory::InvalidateAllRegisters () {}
71
72 size_t
GetRegisterCount()73 RegisterContextHistory::GetRegisterCount ()
74 {
75 return 1;
76 }
77
78 const lldb_private::RegisterInfo *
GetRegisterInfoAtIndex(size_t reg)79 RegisterContextHistory::GetRegisterInfoAtIndex (size_t reg)
80 {
81 if (reg)
82 return NULL;
83 return &m_pc_reg_info;
84 }
85
86 size_t
GetRegisterSetCount()87 RegisterContextHistory::GetRegisterSetCount ()
88 {
89 return 1;
90 }
91
92 const lldb_private::RegisterSet *
GetRegisterSet(size_t reg_set)93 RegisterContextHistory::GetRegisterSet (size_t reg_set)
94 {
95 if (reg_set)
96 return NULL;
97 return &m_reg_set0;
98 }
99
100 bool
ReadRegister(const lldb_private::RegisterInfo * reg_info,lldb_private::RegisterValue & value)101 RegisterContextHistory::ReadRegister (const lldb_private::RegisterInfo *reg_info, lldb_private::RegisterValue &value)
102 {
103 if (!reg_info)
104 return false;
105 uint32_t reg_number = reg_info->kinds[eRegisterKindGeneric];
106 if (reg_number == LLDB_REGNUM_GENERIC_PC)
107 {
108 value.SetUInt(m_pc_value, reg_info->byte_size);
109 return true;
110 }
111 return false;
112 }
113
114 bool
WriteRegister(const lldb_private::RegisterInfo * reg_info,const lldb_private::RegisterValue & value)115 RegisterContextHistory::WriteRegister (const lldb_private::RegisterInfo *reg_info, const lldb_private::RegisterValue &value)
116 {
117 return false;
118 }
119
120 bool
ReadAllRegisterValues(lldb::DataBufferSP & data_sp)121 RegisterContextHistory::ReadAllRegisterValues (lldb::DataBufferSP &data_sp)
122 {
123 return false;
124 }
125
126 bool
WriteAllRegisterValues(const lldb::DataBufferSP & data_sp)127 RegisterContextHistory::WriteAllRegisterValues (const lldb::DataBufferSP &data_sp)
128 {
129 return false;
130 }
131
132 uint32_t
ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,uint32_t num)133 RegisterContextHistory::ConvertRegisterKindToRegisterNumber (lldb::RegisterKind kind, uint32_t num)
134 {
135 if (kind == eRegisterKindGeneric && num == LLDB_REGNUM_GENERIC_PC)
136 return 0;
137 return LLDB_INVALID_REGNUM;
138 }
139