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
|
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string>
#include "common/logging/log.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/service/lm/lm.h"
namespace Service {
namespace LM {
class Logger final : public ServiceFramework<Logger> {
public:
Logger() : ServiceFramework("Logger") {
static const FunctionInfo functions[] = {
{0x00000000, &Logger::Log, "Log"},
};
RegisterHandlers(functions);
}
~Logger() = default;
private:
struct MessageHeader {
enum Flags : u32_le {
IsHead = 1,
IsTail = 2,
};
u64_le pid;
u64_le threadContext;
union {
BitField<0, 16, Flags> flags;
BitField<16, 8, u32_le> severity;
BitField<24, 8, u32_le> verbosity;
};
u32_le payload_size;
/// Returns true if this is part of a single log message
bool IsSingleMessage() const {
return (flags & Flags::IsHead) && (flags & Flags::IsTail);
}
};
static_assert(sizeof(MessageHeader) == 0x18, "MessageHeader is incorrect size");
/// Log field type
enum class Field : u8 {
Message = 2,
Line = 3,
Filename = 4,
Function = 5,
Module = 6,
Thread = 7,
};
/**
* LM::Initialize service function
* Inputs:
* 0: 0x00000000
* Outputs:
* 0: ResultCode
*/
void Log(Kernel::HLERequestContext& ctx) {
// This function only succeeds - Get that out of the way
IPC::RequestBuilder rb{ctx, 1};
rb.Push(RESULT_SUCCESS);
// Read MessageHeader, despite not doing anything with it right now
MessageHeader header{};
VAddr addr{ctx.BufferDescriptorX()[0].Address()};
const VAddr end_addr{addr + ctx.BufferDescriptorX()[0].size};
Memory::ReadBlock(addr, &header, sizeof(MessageHeader));
addr += sizeof(MessageHeader);
if (!header.IsSingleMessage()) {
UNIMPLEMENTED_MSG("Multi message logs are unimplemeneted");
}
// Parse out log metadata
u32 line{};
std::string message, filename, function;
while (addr < end_addr) {
const Field field{static_cast<Field>(Memory::Read8(addr++))};
size_t length{Memory::Read8(addr++)};
switch (field) {
case Field::Message:
message = Memory::ReadCString(addr, length);
break;
case Field::Line:
line = Memory::Read32(addr);
break;
case Field::Filename:
filename = Memory::ReadCString(addr, length);
break;
case Field::Function:
function = Memory::ReadCString(addr, length);
break;
}
addr += length;
}
// Empty log - nothing to do here
if (message.size() <= 1) {
return;
}
// Remove trailing new line
if (message[message.length() - 1] == '\n') {
message.erase(message.length() - 1);
}
// Format a nicely printable string out of the log metadata
std::string output;
if (filename.size()) {
output += filename + ':';
}
if (function.size()) {
output += function + ':';
}
if (line) {
output += std::to_string(line) + ':';
}
if (output.back() == ':') {
output += ' ';
}
output += message;
LOG_DEBUG(Debug_Emulated, "%s", output.c_str());
}
};
void InstallInterfaces(SM::ServiceManager& service_manager) {
std::make_shared<LM>()->InstallAsService(service_manager);
}
/**
* LM::Initialize service function
* Inputs:
* 0: 0x00000000
* Outputs:
* 0: ResultCode
*/
void LM::Initialize(Kernel::HLERequestContext& ctx) {
auto client_port = std::make_shared<Logger>()->CreatePort();
auto session = client_port->Connect();
if (session.Succeeded()) {
LOG_DEBUG(Service_SM, "called, initialized logger -> session=%u",
(*session)->GetObjectId());
IPC::RequestBuilder rb{ctx, 1, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushMoveObjects(std::move(session).Unwrap());
registered_loggers.emplace_back(std::move(client_port));
} else {
UNIMPLEMENTED();
}
LOG_INFO(Service_SM, "called");
}
LM::LM() : ServiceFramework("lm") {
static const FunctionInfo functions[] = {
{0x00000000, &LM::Initialize, "Initialize"},
};
RegisterHandlers(functions);
}
} // namespace LM
} // namespace Service
|
