From ed82fa3a91fc84f7f906b898d8f71e15fb42c16e Mon Sep 17 00:00:00 2001 From: Zach Hilman Date: Fri, 7 Jun 2019 11:11:11 -0400 Subject: core: Move Freezer class to tools namespace --- src/core/tools/freezer.cpp | 188 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 src/core/tools/freezer.cpp (limited to 'src/core/tools/freezer.cpp') diff --git a/src/core/tools/freezer.cpp b/src/core/tools/freezer.cpp new file mode 100644 index 000000000..17f050068 --- /dev/null +++ b/src/core/tools/freezer.cpp @@ -0,0 +1,188 @@ +// 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/core_timing_util.h" +#include "core/memory.h" +#include "core/tools/freezer.h" + +namespace Tools { + +namespace { + +constexpr s64 MEMORY_FREEZER_TICKS = static_cast(Core::Timing::BASE_CLOCK_RATE / 60); + +u64 MemoryReadWidth(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(u32 width, VAddr addr, u64 value) { + switch (width) { + case 1: + Memory::Write8(addr, static_cast(value)); + break; + case 2: + Memory::Write16(addr, static_cast(value)); + break; + case 4: + Memory::Write32(addr, static_cast(value)); + break; + case 8: + Memory::Write64(addr, value); + break; + default: + UNREACHABLE(); + } +} + +} // Anonymous namespace + +Freezer::Freezer(Core::Timing::CoreTiming& core_timing) : core_timing(core_timing) { + event = core_timing.RegisterEvent( + "MemoryFreezer::FrameCallback", + [this](u64 userdata, s64 cycles_late) { FrameCallback(userdata, cycles_late); }); + core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS, event); +} + +Freezer::~Freezer() { + core_timing.UnscheduleEvent(event, 0); +} + +void Freezer::SetActive(bool active) { + if (!this->active.exchange(active)) { + FillEntryReads(); + core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS, 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(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); + + entries.erase( + std::remove_if(entries.begin(), entries.end(), + [&address](const Entry& entry) { return entry.address == address; }), + entries.end()); +} + +bool Freezer::IsFrozen(VAddr address) const { + std::lock_guard lock{entries_mutex}; + + return std::find_if(entries.begin(), entries.end(), [&address](const Entry& entry) { + return entry.address == address; + }) != entries.end(); +} + +void Freezer::SetFrozenValue(VAddr address, u64 value) { + std::lock_guard lock{entries_mutex}; + + const auto iter = std::find_if(entries.begin(), entries.end(), [&address](const Entry& entry) { + return entry.address == address; + }); + + if (iter == entries.end()) { + 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::GetEntry(VAddr address) const { + std::lock_guard lock{entries_mutex}; + + const auto iter = std::find_if(entries.begin(), entries.end(), [&address](const Entry& entry) { + return entry.address == address; + }); + + if (iter == entries.end()) { + return std::nullopt; + } + + return *iter; +} + +std::vector Freezer::GetEntries() const { + std::lock_guard lock{entries_mutex}; + + return entries; +} + +void Freezer::FrameCallback(u64 userdata, s64 cycles_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(entry.width, entry.address, entry.value); + } + + core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS - cycles_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(entry.width, entry.address); + } +} + +} // namespace Tools -- cgit v1.2.3