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
|
//===-- RegisterContextMemory.cpp -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "RegisterContextMemory.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "DynamicRegisterInfo.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Thread.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// RegisterContextMemory constructor
//----------------------------------------------------------------------
RegisterContextMemory::RegisterContextMemory(Thread &thread,
uint32_t concrete_frame_idx,
DynamicRegisterInfo ®_infos,
addr_t reg_data_addr)
: RegisterContext(thread, concrete_frame_idx), m_reg_infos(reg_infos),
m_reg_valid(), m_reg_data(), m_reg_data_addr(reg_data_addr) {
// Resize our vector of bools to contain one bool for every register.
// We will use these boolean values to know when a register value
// is valid in m_reg_data.
const size_t num_regs = reg_infos.GetNumRegisters();
assert(num_regs > 0);
m_reg_valid.resize(num_regs);
// Make a heap based buffer that is big enough to store all registers
DataBufferSP reg_data_sp(
new DataBufferHeap(reg_infos.GetRegisterDataByteSize(), 0));
m_reg_data.SetData(reg_data_sp);
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
RegisterContextMemory::~RegisterContextMemory() {}
void RegisterContextMemory::InvalidateAllRegisters() {
if (m_reg_data_addr != LLDB_INVALID_ADDRESS)
SetAllRegisterValid(false);
}
void RegisterContextMemory::SetAllRegisterValid(bool b) {
std::vector<bool>::iterator pos, end = m_reg_valid.end();
for (pos = m_reg_valid.begin(); pos != end; ++pos)
*pos = b;
}
size_t RegisterContextMemory::GetRegisterCount() {
return m_reg_infos.GetNumRegisters();
}
const RegisterInfo *RegisterContextMemory::GetRegisterInfoAtIndex(size_t reg) {
return m_reg_infos.GetRegisterInfoAtIndex(reg);
}
size_t RegisterContextMemory::GetRegisterSetCount() {
return m_reg_infos.GetNumRegisterSets();
}
const RegisterSet *RegisterContextMemory::GetRegisterSet(size_t reg_set) {
return m_reg_infos.GetRegisterSet(reg_set);
}
uint32_t RegisterContextMemory::ConvertRegisterKindToRegisterNumber(
lldb::RegisterKind kind, uint32_t num) {
return m_reg_infos.ConvertRegisterKindToRegisterNumber(kind, num);
}
bool RegisterContextMemory::ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) {
const uint32_t reg_num = reg_info->kinds[eRegisterKindLLDB];
if (!m_reg_valid[reg_num]) {
if (!ReadAllRegisterValues(m_reg_data.GetSharedDataBuffer()))
return false;
}
const bool partial_data_ok = false;
return reg_value
.SetValueFromData(reg_info, m_reg_data, reg_info->byte_offset,
partial_data_ok)
.Success();
}
bool RegisterContextMemory::WriteRegister(const RegisterInfo *reg_info,
const RegisterValue ®_value) {
if (m_reg_data_addr != LLDB_INVALID_ADDRESS) {
const uint32_t reg_num = reg_info->kinds[eRegisterKindLLDB];
addr_t reg_addr = m_reg_data_addr + reg_info->byte_offset;
Error error(WriteRegisterValueToMemory(reg_info, reg_addr,
reg_info->byte_size, reg_value));
m_reg_valid[reg_num] = false;
return error.Success();
}
return false;
}
bool RegisterContextMemory::ReadAllRegisterValues(DataBufferSP &data_sp) {
if (m_reg_data_addr != LLDB_INVALID_ADDRESS) {
ProcessSP process_sp(CalculateProcess());
if (process_sp) {
Error error;
if (process_sp->ReadMemory(m_reg_data_addr, data_sp->GetBytes(),
data_sp->GetByteSize(),
error) == data_sp->GetByteSize()) {
SetAllRegisterValid(true);
return true;
}
}
}
return false;
}
bool RegisterContextMemory::WriteAllRegisterValues(
const DataBufferSP &data_sp) {
if (m_reg_data_addr != LLDB_INVALID_ADDRESS) {
ProcessSP process_sp(CalculateProcess());
if (process_sp) {
Error error;
SetAllRegisterValid(false);
if (process_sp->WriteMemory(m_reg_data_addr, data_sp->GetBytes(),
data_sp->GetByteSize(),
error) == data_sp->GetByteSize())
return true;
}
}
return false;
}
void RegisterContextMemory::SetAllRegisterData(
const lldb::DataBufferSP &data_sp) {
m_reg_data.SetData(data_sp);
SetAllRegisterValid(true);
}
|
