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-rw-r--r--src/core/file_sys/cheat_engine.cpp492
1 files changed, 0 insertions, 492 deletions
diff --git a/src/core/file_sys/cheat_engine.cpp b/src/core/file_sys/cheat_engine.cpp
deleted file mode 100644
index b06c2f20a..000000000
--- a/src/core/file_sys/cheat_engine.cpp
+++ /dev/null
@@ -1,492 +0,0 @@
-// Copyright 2018 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <locale>
-#include "common/hex_util.h"
-#include "common/microprofile.h"
-#include "common/swap.h"
-#include "core/core.h"
-#include "core/core_timing.h"
-#include "core/core_timing_util.h"
-#include "core/file_sys/cheat_engine.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/service/hid/controllers/npad.h"
-#include "core/hle/service/hid/hid.h"
-#include "core/hle/service/sm/sm.h"
-
-namespace FileSys {
-
-constexpr s64 CHEAT_ENGINE_TICKS = static_cast<s64>(Core::Timing::BASE_CLOCK_RATE / 60);
-constexpr u32 KEYPAD_BITMASK = 0x3FFFFFF;
-
-u64 Cheat::Address() const {
- u64 out;
- std::memcpy(&out, raw.data(), sizeof(u64));
- return Common::swap64(out) & 0xFFFFFFFFFF;
-}
-
-u64 Cheat::ValueWidth(u64 offset) const {
- return Value(offset, width);
-}
-
-u64 Cheat::Value(u64 offset, u64 width) const {
- u64 out;
- std::memcpy(&out, raw.data() + offset, sizeof(u64));
- out = Common::swap64(out);
- if (width == 8)
- return out;
- return out & ((1ull << (width * CHAR_BIT)) - 1);
-}
-
-u32 Cheat::KeypadValue() const {
- u32 out;
- std::memcpy(&out, raw.data(), sizeof(u32));
- return Common::swap32(out) & 0x0FFFFFFF;
-}
-
-void CheatList::SetMemoryParameters(VAddr main_begin, VAddr heap_begin, VAddr main_end,
- VAddr heap_end, MemoryWriter writer, MemoryReader reader) {
- this->main_region_begin = main_begin;
- this->main_region_end = main_end;
- this->heap_region_begin = heap_begin;
- this->heap_region_end = heap_end;
- this->writer = writer;
- this->reader = reader;
-}
-
-MICROPROFILE_DEFINE(Cheat_Engine, "Add-Ons", "Cheat Engine", MP_RGB(70, 200, 70));
-
-void CheatList::Execute() {
- MICROPROFILE_SCOPE(Cheat_Engine);
-
- std::fill(scratch.begin(), scratch.end(), 0);
- in_standard = false;
- for (std::size_t i = 0; i < master_list.size(); ++i) {
- LOG_DEBUG(Common_Filesystem, "Executing block #{:08X} ({})", i, master_list[i].first);
- current_block = i;
- ExecuteBlock(master_list[i].second);
- }
-
- in_standard = true;
- for (std::size_t i = 0; i < standard_list.size(); ++i) {
- LOG_DEBUG(Common_Filesystem, "Executing block #{:08X} ({})", i, standard_list[i].first);
- current_block = i;
- ExecuteBlock(standard_list[i].second);
- }
-}
-
-CheatList::CheatList(const Core::System& system_, ProgramSegment master, ProgramSegment standard)
- : master_list{std::move(master)}, standard_list{std::move(standard)}, system{&system_} {}
-
-bool CheatList::EvaluateConditional(const Cheat& cheat) const {
- using ComparisonFunction = bool (*)(u64, u64);
- constexpr std::array<ComparisonFunction, 6> comparison_functions{
- [](u64 a, u64 b) { return a > b; }, [](u64 a, u64 b) { return a >= b; },
- [](u64 a, u64 b) { return a < b; }, [](u64 a, u64 b) { return a <= b; },
- [](u64 a, u64 b) { return a == b; }, [](u64 a, u64 b) { return a != b; },
- };
-
- if (cheat.type == CodeType::ConditionalInput) {
- const auto applet_resource =
- system->ServiceManager().GetService<Service::HID::Hid>("hid")->GetAppletResource();
- if (applet_resource == nullptr) {
- LOG_WARNING(
- Common_Filesystem,
- "Attempted to evaluate input conditional, but applet resource is not initialized!");
- return false;
- }
-
- const auto press_state =
- applet_resource
- ->GetController<Service::HID::Controller_NPad>(Service::HID::HidController::NPad)
- .GetAndResetPressState();
- return ((press_state & cheat.KeypadValue()) & KEYPAD_BITMASK) != 0;
- }
-
- ASSERT(cheat.type == CodeType::Conditional);
-
- const auto offset =
- cheat.memory_type == MemoryType::MainNSO ? main_region_begin : heap_region_begin;
- ASSERT(static_cast<u8>(cheat.comparison_op.Value()) < 6);
- auto* function = comparison_functions[static_cast<u8>(cheat.comparison_op.Value())];
- const auto addr = cheat.Address() + offset;
-
- return function(reader(cheat.width, SanitizeAddress(addr)), cheat.ValueWidth(8));
-}
-
-void CheatList::ProcessBlockPairs(const Block& block) {
- block_pairs.clear();
-
- u64 scope = 0;
- std::map<u64, u64> pairs;
-
- for (std::size_t i = 0; i < block.size(); ++i) {
- const auto& cheat = block[i];
-
- switch (cheat.type) {
- case CodeType::Conditional:
- case CodeType::ConditionalInput:
- pairs.insert_or_assign(scope, i);
- ++scope;
- break;
- case CodeType::EndConditional: {
- --scope;
- const auto idx = pairs.at(scope);
- block_pairs.insert_or_assign(idx, i);
- break;
- }
- case CodeType::Loop: {
- if (cheat.end_of_loop) {
- --scope;
- const auto idx = pairs.at(scope);
- block_pairs.insert_or_assign(idx, i);
- } else {
- pairs.insert_or_assign(scope, i);
- ++scope;
- }
- break;
- }
- }
- }
-}
-
-void CheatList::WriteImmediate(const Cheat& cheat) {
- const auto offset =
- cheat.memory_type == MemoryType::MainNSO ? main_region_begin : heap_region_begin;
- const auto& register_3 = scratch.at(cheat.register_3);
-
- const auto addr = cheat.Address() + offset + register_3;
- LOG_DEBUG(Common_Filesystem, "writing value={:016X} to addr={:016X}", addr,
- cheat.Value(8, cheat.width));
- writer(cheat.width, SanitizeAddress(addr), cheat.ValueWidth(8));
-}
-
-void CheatList::BeginConditional(const Cheat& cheat) {
- if (EvaluateConditional(cheat)) {
- return;
- }
-
- const auto iter = block_pairs.find(current_index);
- ASSERT(iter != block_pairs.end());
- current_index = iter->second - 1;
-}
-
-void CheatList::EndConditional(const Cheat& cheat) {
- LOG_DEBUG(Common_Filesystem, "Ending conditional block.");
-}
-
-void CheatList::Loop(const Cheat& cheat) {
- if (cheat.end_of_loop.Value())
- ASSERT(!cheat.end_of_loop.Value());
-
- auto& register_3 = scratch.at(cheat.register_3);
- const auto iter = block_pairs.find(current_index);
- ASSERT(iter != block_pairs.end());
- ASSERT(iter->first < iter->second);
-
- const s32 initial_value = static_cast<s32>(cheat.Value(4, sizeof(s32)));
- for (s32 i = initial_value; i >= 0; --i) {
- register_3 = static_cast<u64>(i);
- for (std::size_t c = iter->first + 1; c < iter->second; ++c) {
- current_index = c;
- ExecuteSingleCheat(
- (in_standard ? standard_list : master_list)[current_block].second[c]);
- }
- }
-
- current_index = iter->second;
-}
-
-void CheatList::LoadImmediate(const Cheat& cheat) {
- auto& register_3 = scratch.at(cheat.register_3);
-
- LOG_DEBUG(Common_Filesystem, "setting register={:01X} equal to value={:016X}", cheat.register_3,
- cheat.Value(4, 8));
- register_3 = cheat.Value(4, 8);
-}
-
-void CheatList::LoadIndexed(const Cheat& cheat) {
- const auto offset =
- cheat.memory_type == MemoryType::MainNSO ? main_region_begin : heap_region_begin;
- auto& register_3 = scratch.at(cheat.register_3);
-
- const auto addr = (cheat.load_from_register.Value() ? register_3 : offset) + cheat.Address();
- LOG_DEBUG(Common_Filesystem, "writing indexed value to register={:01X}, addr={:016X}",
- cheat.register_3, addr);
- register_3 = reader(cheat.width, SanitizeAddress(addr));
-}
-
-void CheatList::StoreIndexed(const Cheat& cheat) {
- const auto& register_3 = scratch.at(cheat.register_3);
-
- const auto addr =
- register_3 + (cheat.add_additional_register.Value() ? scratch.at(cheat.register_6) : 0);
- LOG_DEBUG(Common_Filesystem, "writing value={:016X} to addr={:016X}",
- cheat.Value(4, cheat.width), addr);
- writer(cheat.width, SanitizeAddress(addr), cheat.ValueWidth(4));
-}
-
-void CheatList::RegisterArithmetic(const Cheat& cheat) {
- using ArithmeticFunction = u64 (*)(u64, u64);
- constexpr std::array<ArithmeticFunction, 5> arithmetic_functions{
- [](u64 a, u64 b) { return a + b; }, [](u64 a, u64 b) { return a - b; },
- [](u64 a, u64 b) { return a * b; }, [](u64 a, u64 b) { return a << b; },
- [](u64 a, u64 b) { return a >> b; },
- };
-
- using ArithmeticOverflowCheck = bool (*)(u64, u64);
- constexpr std::array<ArithmeticOverflowCheck, 5> arithmetic_overflow_checks{
- [](u64 a, u64 b) { return a > (std::numeric_limits<u64>::max() - b); }, // a + b
- [](u64 a, u64 b) { return a > (std::numeric_limits<u64>::max() + b); }, // a - b
- [](u64 a, u64 b) { return a > (std::numeric_limits<u64>::max() / b); }, // a * b
- [](u64 a, u64 b) { return b >= 64 || (a & ~((1ull << (64 - b)) - 1)) != 0; }, // a << b
- [](u64 a, u64 b) { return b >= 64 || (a & ((1ull << b) - 1)) != 0; }, // a >> b
- };
-
- static_assert(sizeof(arithmetic_functions) == sizeof(arithmetic_overflow_checks),
- "Missing or have extra arithmetic overflow checks compared to functions!");
-
- auto& register_3 = scratch.at(cheat.register_3);
-
- ASSERT(static_cast<u8>(cheat.arithmetic_op.Value()) < 5);
- auto* function = arithmetic_functions[static_cast<u8>(cheat.arithmetic_op.Value())];
- auto* overflow_function =
- arithmetic_overflow_checks[static_cast<u8>(cheat.arithmetic_op.Value())];
- LOG_DEBUG(Common_Filesystem, "performing arithmetic with register={:01X}, value={:016X}",
- cheat.register_3, cheat.ValueWidth(4));
-
- if (overflow_function(register_3, cheat.ValueWidth(4))) {
- LOG_WARNING(Common_Filesystem,
- "overflow will occur when performing arithmetic operation={:02X} with operands "
- "a={:016X}, b={:016X}!",
- static_cast<u8>(cheat.arithmetic_op.Value()), register_3, cheat.ValueWidth(4));
- }
-
- register_3 = function(register_3, cheat.ValueWidth(4));
-}
-
-void CheatList::BeginConditionalInput(const Cheat& cheat) {
- if (EvaluateConditional(cheat))
- return;
-
- const auto iter = block_pairs.find(current_index);
- ASSERT(iter != block_pairs.end());
- current_index = iter->second - 1;
-}
-
-VAddr CheatList::SanitizeAddress(VAddr in) const {
- if ((in < main_region_begin || in >= main_region_end) &&
- (in < heap_region_begin || in >= heap_region_end)) {
- LOG_ERROR(Common_Filesystem,
- "Cheat attempting to access memory at invalid address={:016X}, if this persists, "
- "the cheat may be incorrect. However, this may be normal early in execution if "
- "the game has not properly set up yet.",
- in);
- return 0; ///< Invalid addresses will hard crash
- }
-
- return in;
-}
-
-void CheatList::ExecuteSingleCheat(const Cheat& cheat) {
- using CheatOperationFunction = void (CheatList::*)(const Cheat&);
- constexpr std::array<CheatOperationFunction, 9> cheat_operation_functions{
- &CheatList::WriteImmediate, &CheatList::BeginConditional,
- &CheatList::EndConditional, &CheatList::Loop,
- &CheatList::LoadImmediate, &CheatList::LoadIndexed,
- &CheatList::StoreIndexed, &CheatList::RegisterArithmetic,
- &CheatList::BeginConditionalInput,
- };
-
- const auto index = static_cast<u8>(cheat.type.Value());
- ASSERT(index < sizeof(cheat_operation_functions));
- const auto op = cheat_operation_functions[index];
- (this->*op)(cheat);
-}
-
-void CheatList::ExecuteBlock(const Block& block) {
- encountered_loops.clear();
-
- ProcessBlockPairs(block);
- for (std::size_t i = 0; i < block.size(); ++i) {
- current_index = i;
- ExecuteSingleCheat(block[i]);
- i = current_index;
- }
-}
-
-CheatParser::~CheatParser() = default;
-
-CheatList CheatParser::MakeCheatList(const Core::System& system, CheatList::ProgramSegment master,
- CheatList::ProgramSegment standard) const {
- return {system, std::move(master), std::move(standard)};
-}
-
-TextCheatParser::~TextCheatParser() = default;
-
-CheatList TextCheatParser::Parse(const Core::System& system, const std::vector<u8>& data) const {
- std::stringstream ss;
- ss.write(reinterpret_cast<const char*>(data.data()), data.size());
-
- std::vector<std::string> lines;
- std::string stream_line;
- while (std::getline(ss, stream_line)) {
- // Remove a trailing \r
- if (!stream_line.empty() && stream_line.back() == '\r')
- stream_line.pop_back();
- lines.push_back(std::move(stream_line));
- }
-
- CheatList::ProgramSegment master_list;
- CheatList::ProgramSegment standard_list;
-
- for (std::size_t i = 0; i < lines.size(); ++i) {
- auto line = lines[i];
-
- if (!line.empty() && (line[0] == '[' || line[0] == '{')) {
- const auto master = line[0] == '{';
- const auto begin = master ? line.find('{') : line.find('[');
- const auto end = master ? line.rfind('}') : line.rfind(']');
-
- ASSERT(begin != std::string::npos && end != std::string::npos);
-
- const std::string patch_name{line.begin() + begin + 1, line.begin() + end};
- CheatList::Block block{};
-
- while (i < lines.size() - 1) {
- line = lines[++i];
- if (!line.empty() && (line[0] == '[' || line[0] == '{')) {
- --i;
- break;
- }
-
- if (line.size() < 8)
- continue;
-
- Cheat out{};
- out.raw = ParseSingleLineCheat(line);
- block.push_back(out);
- }
-
- (master ? master_list : standard_list).emplace_back(patch_name, block);
- }
- }
-
- return MakeCheatList(system, master_list, standard_list);
-}
-
-std::array<u8, 16> TextCheatParser::ParseSingleLineCheat(const std::string& line) const {
- std::array<u8, 16> out{};
-
- if (line.size() < 8)
- return out;
-
- const auto word1 = Common::HexStringToArray<sizeof(u32)>(std::string_view{line.data(), 8});
- std::memcpy(out.data(), word1.data(), sizeof(u32));
-
- if (line.size() < 17 || line[8] != ' ')
- return out;
-
- const auto word2 = Common::HexStringToArray<sizeof(u32)>(std::string_view{line.data() + 9, 8});
- std::memcpy(out.data() + sizeof(u32), word2.data(), sizeof(u32));
-
- if (line.size() < 26 || line[17] != ' ') {
- // Perform shifting in case value is truncated early.
- const auto type = static_cast<CodeType>((out[0] & 0xF0) >> 4);
- if (type == CodeType::Loop || type == CodeType::LoadImmediate ||
- type == CodeType::StoreIndexed || type == CodeType::RegisterArithmetic) {
- std::memcpy(out.data() + 8, out.data() + 4, sizeof(u32));
- std::memset(out.data() + 4, 0, sizeof(u32));
- }
-
- return out;
- }
-
- const auto word3 = Common::HexStringToArray<sizeof(u32)>(std::string_view{line.data() + 18, 8});
- std::memcpy(out.data() + 2 * sizeof(u32), word3.data(), sizeof(u32));
-
- if (line.size() < 35 || line[26] != ' ') {
- // Perform shifting in case value is truncated early.
- const auto type = static_cast<CodeType>((out[0] & 0xF0) >> 4);
- if (type == CodeType::WriteImmediate || type == CodeType::Conditional) {
- std::memcpy(out.data() + 12, out.data() + 8, sizeof(u32));
- std::memset(out.data() + 8, 0, sizeof(u32));
- }
-
- return out;
- }
-
- const auto word4 = Common::HexStringToArray<sizeof(u32)>(std::string_view{line.data() + 27, 8});
- std::memcpy(out.data() + 3 * sizeof(u32), word4.data(), sizeof(u32));
-
- return out;
-}
-
-namespace {
-u64 MemoryReadImpl(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 MemoryWriteImpl(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
-
-CheatEngine::CheatEngine(Core::System& system, std::vector<CheatList> cheats_,
- const std::string& build_id, VAddr code_region_start,
- VAddr code_region_end)
- : cheats{std::move(cheats_)}, core_timing{system.CoreTiming()} {
- event = core_timing.RegisterEvent(
- "CheatEngine::FrameCallback::" + build_id,
- [this](u64 userdata, s64 cycles_late) { FrameCallback(userdata, cycles_late); });
- core_timing.ScheduleEvent(CHEAT_ENGINE_TICKS, event);
-
- const auto& vm_manager = system.CurrentProcess()->VMManager();
- for (auto& list : this->cheats) {
- list.SetMemoryParameters(code_region_start, vm_manager.GetHeapRegionBaseAddress(),
- code_region_end, vm_manager.GetHeapRegionEndAddress(),
- &MemoryWriteImpl, &MemoryReadImpl);
- }
-}
-
-CheatEngine::~CheatEngine() {
- core_timing.UnscheduleEvent(event, 0);
-}
-
-void CheatEngine::FrameCallback(u64 userdata, s64 cycles_late) {
- for (auto& list : cheats) {
- list.Execute();
- }
-
- core_timing.ScheduleEvent(CHEAT_ENGINE_TICKS - cycles_late, event);
-}
-
-} // namespace FileSys
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