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dmnt: cheats: Silence memory errors

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This commit is contained in:
german77
2024-02-05 11:06:25 -06:00
parent 504abbd6e0
commit 8113f55f4b
4 changed files with 32 additions and 20 deletions
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25
src/core/memory/cheat_engine.cpp
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@ -47,12 +47,23 @@ StandardVmCallbacks::StandardVmCallbacks(System& system_, const CheatProcessMeta
StandardVmCallbacks::~StandardVmCallbacks() = default;
void StandardVmCallbacks::MemoryRead(VAddr address, void* data, u64 size) {
system.ApplicationMemory().ReadBlock(SanitizeAddress(address), data, size);
void StandardVmCallbacks::MemoryReadUnsafe(VAddr address, void* data, u64 size) {
// Return zero on invalid address
if (!IsAddressInRange(address) || !system.ApplicationMemory().IsValidVirtualAddress(address)) {
std::memset(data, 0, size);
return;
}
system.ApplicationMemory().ReadBlock(address, data, size);
}
void StandardVmCallbacks::MemoryWrite(VAddr address, const void* data, u64 size) {
system.ApplicationMemory().WriteBlock(SanitizeAddress(address), data, size);
void StandardVmCallbacks::MemoryWriteUnsafe(VAddr address, const void* data, u64 size) {
// Skip invalid memory write address
if (!IsAddressInRange(address) || !system.ApplicationMemory().IsValidVirtualAddress(address)) {
return;
}
system.ApplicationMemory().WriteBlock(address, data, size);
}
u64 StandardVmCallbacks::HidKeysDown() {
@ -82,7 +93,7 @@ void StandardVmCallbacks::CommandLog(std::string_view data) {
data.back() == '\n' ? data.substr(0, data.size() - 1) : data);
}
VAddr StandardVmCallbacks::SanitizeAddress(VAddr in) const {
bool StandardVmCallbacks::IsAddressInRange(VAddr in) const {
if ((in < metadata.main_nso_extents.base ||
in >= metadata.main_nso_extents.base + metadata.main_nso_extents.size) &&
(in < metadata.heap_extents.base ||
@ -97,10 +108,10 @@ VAddr StandardVmCallbacks::SanitizeAddress(VAddr in) const {
"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 false; ///< Invalid addresses will hard crash
}
return in;
return true;
}
CheatParser::~CheatParser() = default;