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
|
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/memory.h"
#include "core/tools/freezer.h"
namespace Tools {
namespace {
constexpr auto memory_freezer_ns = std::chrono::nanoseconds{1000000000 / 60};
u64 MemoryReadWidth(Core::Memory::Memory& memory, u32 width, VAddr addr) {
switch (width) {
case 1:
return memory.Read8(addr);
case 2:
return memory.Read16(addr);
case 4:
return memory.Read32(addr);
case 8:
return memory.Read64(addr);
default:
UNREACHABLE();
return 0;
}
}
void MemoryWriteWidth(Core::Memory::Memory& memory, u32 width, VAddr addr, u64 value) {
switch (width) {
case 1:
memory.Write8(addr, static_cast<u8>(value));
break;
case 2:
memory.Write16(addr, static_cast<u16>(value));
break;
case 4:
memory.Write32(addr, static_cast<u32>(value));
break;
case 8:
memory.Write64(addr, value);
break;
default:
UNREACHABLE();
}
}
} // Anonymous namespace
Freezer::Freezer(Core::Timing::CoreTiming& core_timing_, Core::Memory::Memory& memory_)
: core_timing{core_timing_}, memory{memory_} {
event = Core::Timing::CreateEvent(
"MemoryFreezer::FrameCallback",
[this](std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
FrameCallback(user_data, ns_late);
});
core_timing.ScheduleEvent(memory_freezer_ns, event);
}
Freezer::~Freezer() {
core_timing.UnscheduleEvent(event, 0);
}
void Freezer::SetActive(bool is_active) {
if (!active.exchange(is_active)) {
FillEntryReads();
core_timing.ScheduleEvent(memory_freezer_ns, event);
LOG_DEBUG(Common_Memory, "Memory freezer activated!");
} else {
LOG_DEBUG(Common_Memory, "Memory freezer deactivated!");
}
}
bool Freezer::IsActive() const {
return active.load(std::memory_order_relaxed);
}
void Freezer::Clear() {
std::lock_guard lock{entries_mutex};
LOG_DEBUG(Common_Memory, "Clearing all frozen memory values.");
entries.clear();
}
u64 Freezer::Freeze(VAddr address, u32 width) {
std::lock_guard lock{entries_mutex};
const auto current_value = MemoryReadWidth(memory, width, address);
entries.push_back({address, width, current_value});
LOG_DEBUG(Common_Memory,
"Freezing memory for address={:016X}, width={:02X}, current_value={:016X}", address,
width, current_value);
return current_value;
}
void Freezer::Unfreeze(VAddr address) {
std::lock_guard lock{entries_mutex};
LOG_DEBUG(Common_Memory, "Unfreezing memory for address={:016X}", address);
std::erase_if(entries, [address](const Entry& entry) { return entry.address == address; });
}
bool Freezer::IsFrozen(VAddr address) const {
std::lock_guard lock{entries_mutex};
return FindEntry(address) != entries.cend();
}
void Freezer::SetFrozenValue(VAddr address, u64 value) {
std::lock_guard lock{entries_mutex};
const auto iter = FindEntry(address);
if (iter == entries.cend()) {
LOG_ERROR(Common_Memory,
"Tried to set freeze value for address={:016X} that is not frozen!", address);
return;
}
LOG_DEBUG(Common_Memory,
"Manually overridden freeze value for address={:016X}, width={:02X} to value={:016X}",
iter->address, iter->width, value);
iter->value = value;
}
std::optional<Freezer::Entry> Freezer::GetEntry(VAddr address) const {
std::lock_guard lock{entries_mutex};
const auto iter = FindEntry(address);
if (iter == entries.cend()) {
return std::nullopt;
}
return *iter;
}
std::vector<Freezer::Entry> Freezer::GetEntries() const {
std::lock_guard lock{entries_mutex};
return entries;
}
Freezer::Entries::iterator Freezer::FindEntry(VAddr address) {
return std::find_if(entries.begin(), entries.end(),
[address](const Entry& entry) { return entry.address == address; });
}
Freezer::Entries::const_iterator Freezer::FindEntry(VAddr address) const {
return std::find_if(entries.begin(), entries.end(),
[address](const Entry& entry) { return entry.address == address; });
}
void Freezer::FrameCallback(std::uintptr_t, std::chrono::nanoseconds ns_late) {
if (!IsActive()) {
LOG_DEBUG(Common_Memory, "Memory freezer has been deactivated, ending callback events.");
return;
}
std::lock_guard lock{entries_mutex};
for (const auto& entry : entries) {
LOG_DEBUG(Common_Memory,
"Enforcing memory freeze at address={:016X}, value={:016X}, width={:02X}",
entry.address, entry.value, entry.width);
MemoryWriteWidth(memory, entry.width, entry.address, entry.value);
}
core_timing.ScheduleEvent(memory_freezer_ns - ns_late, event);
}
void Freezer::FillEntryReads() {
std::lock_guard lock{entries_mutex};
LOG_DEBUG(Common_Memory, "Updating memory freeze entries to current values.");
for (auto& entry : entries) {
entry.value = MemoryReadWidth(memory, entry.width, entry.address);
}
}
} // namespace Tools
|
