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
|
//===-- NativeRegisterContextFreeBSD_arm.cpp ------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#if defined(__arm__)
#include "NativeRegisterContextFreeBSD_arm.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "lldb/Utility/RegisterValue.h"
#include "lldb/Utility/Status.h"
#include "Plugins/Process/FreeBSD/NativeProcessFreeBSD.h"
#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm.h"
// clang-format off
#include <sys/param.h>
#include <sys/ptrace.h>
#include <sys/types.h>
// clang-format on
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::process_freebsd;
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
return new NativeRegisterContextFreeBSD_arm(target_arch, native_thread);
}
NativeRegisterContextFreeBSD_arm::NativeRegisterContextFreeBSD_arm(
const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, new RegisterInfoPOSIX_arm(target_arch)) {}
RegisterInfoPOSIX_arm &
NativeRegisterContextFreeBSD_arm::GetRegisterInfo() const {
return static_cast<RegisterInfoPOSIX_arm &>(*m_register_info_interface_up);
}
uint32_t NativeRegisterContextFreeBSD_arm::GetRegisterSetCount() const {
return GetRegisterInfo().GetRegisterSetCount();
}
const RegisterSet *
NativeRegisterContextFreeBSD_arm::GetRegisterSet(uint32_t set_index) const {
return GetRegisterInfo().GetRegisterSet(set_index);
}
uint32_t NativeRegisterContextFreeBSD_arm::GetUserRegisterCount() const {
uint32_t count = 0;
for (uint32_t set_index = 0; set_index < GetRegisterSetCount(); ++set_index)
count += GetRegisterSet(set_index)->num_registers;
return count;
}
Status NativeRegisterContextFreeBSD_arm::ReadRegisterSet(uint32_t set) {
switch (set) {
case RegisterInfoPOSIX_arm::GPRegSet:
return NativeProcessFreeBSD::PtraceWrapper(PT_GETREGS, m_thread.GetID(),
m_reg_data.data());
case RegisterInfoPOSIX_arm::FPRegSet:
return NativeProcessFreeBSD::PtraceWrapper(
PT_GETVFPREGS, m_thread.GetID(),
m_reg_data.data() + sizeof(RegisterInfoPOSIX_arm::GPR));
}
llvm_unreachable("NativeRegisterContextFreeBSD_arm::ReadRegisterSet");
}
Status NativeRegisterContextFreeBSD_arm::WriteRegisterSet(uint32_t set) {
switch (set) {
case RegisterInfoPOSIX_arm::GPRegSet:
return NativeProcessFreeBSD::PtraceWrapper(PT_SETREGS, m_thread.GetID(),
m_reg_data.data());
case RegisterInfoPOSIX_arm::FPRegSet:
return NativeProcessFreeBSD::PtraceWrapper(
PT_SETVFPREGS, m_thread.GetID(),
m_reg_data.data() + sizeof(RegisterInfoPOSIX_arm::GPR));
}
llvm_unreachable("NativeRegisterContextFreeBSD_arm::WriteRegisterSet");
}
Status
NativeRegisterContextFreeBSD_arm::ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) {
Status error;
if (!reg_info) {
error.SetErrorString("reg_info NULL");
return error;
}
const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
if (reg == LLDB_INVALID_REGNUM)
return Status("no lldb regnum for %s", reg_info && reg_info->name
? reg_info->name
: "<unknown register>");
uint32_t set = GetRegisterInfo().GetRegisterSetFromRegisterIndex(reg);
error = ReadRegisterSet(set);
if (error.Fail())
return error;
assert(reg_info->byte_offset + reg_info->byte_size <= m_reg_data.size());
reg_value.SetBytes(m_reg_data.data() + reg_info->byte_offset,
reg_info->byte_size, endian::InlHostByteOrder());
return error;
}
Status NativeRegisterContextFreeBSD_arm::WriteRegister(
const RegisterInfo *reg_info, const RegisterValue ®_value) {
Status error;
if (!reg_info)
return Status("reg_info NULL");
const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
if (reg == LLDB_INVALID_REGNUM)
return Status("no lldb regnum for %s", reg_info && reg_info->name
? reg_info->name
: "<unknown register>");
uint32_t set = GetRegisterInfo().GetRegisterSetFromRegisterIndex(reg);
error = ReadRegisterSet(set);
if (error.Fail())
return error;
assert(reg_info->byte_offset + reg_info->byte_size <= m_reg_data.size());
::memcpy(m_reg_data.data() + reg_info->byte_offset, reg_value.GetBytes(),
reg_info->byte_size);
return WriteRegisterSet(set);
}
Status NativeRegisterContextFreeBSD_arm::ReadAllRegisterValues(
lldb::WritableDataBufferSP &data_sp) {
Status error;
error = ReadRegisterSet(RegisterInfoPOSIX_arm::GPRegSet);
if (error.Fail())
return error;
error = ReadRegisterSet(RegisterInfoPOSIX_arm::FPRegSet);
if (error.Fail())
return error;
data_sp.reset(new DataBufferHeap(m_reg_data.size(), 0));
uint8_t *dst = data_sp->GetBytes();
::memcpy(dst, m_reg_data.data(), m_reg_data.size());
return error;
}
Status NativeRegisterContextFreeBSD_arm::WriteAllRegisterValues(
const lldb::DataBufferSP &data_sp) {
Status error;
if (!data_sp) {
error.SetErrorStringWithFormat(
"NativeRegisterContextFreeBSD_arm::%s invalid data_sp provided",
__FUNCTION__);
return error;
}
if (data_sp->GetByteSize() != m_reg_data.size()) {
error.SetErrorStringWithFormat(
"NativeRegisterContextFreeBSD_arm::%s data_sp contained mismatched "
"data size, expected %" PRIu64 ", actual %" PRIu64,
__FUNCTION__, m_reg_data.size(), data_sp->GetByteSize());
return error;
}
const uint8_t *src = data_sp->GetBytes();
if (src == nullptr) {
error.SetErrorStringWithFormat("NativeRegisterContextFreeBSD_arm::%s "
"DataBuffer::GetBytes() returned a null "
"pointer",
__FUNCTION__);
return error;
}
::memcpy(m_reg_data.data(), src, m_reg_data.size());
error = WriteRegisterSet(RegisterInfoPOSIX_arm::GPRegSet);
if (error.Fail())
return error;
return WriteRegisterSet(RegisterInfoPOSIX_arm::FPRegSet);
}
llvm::Error NativeRegisterContextFreeBSD_arm::CopyHardwareWatchpointsFrom(
NativeRegisterContextFreeBSD &source) {
return llvm::Error::success();
}
#endif // defined (__arm__)
|
