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Merge pull request #13549 from shuffle2/ucrtpatch

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remove ucrt compat patches
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Tilka 2025-04-20 22:24:57 +01:00 • committed by GitHub
commit 0a52140145
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1 changed files with 0 additions and 104 deletions
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104
Source/Core/Common/CompatPatches.cpp
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@ -124,76 +124,6 @@ private:
PIMAGE_DATA_DIRECTORY directories;
};
struct UcrtPatchInfo
{
u32 checksum;
u32 rva;
u32 length;
};
bool ApplyUcrtPatch(const wchar_t* name, const UcrtPatchInfo& patch)
{
auto module = GetModuleHandleW(name);
if (!module)
return false;
auto pe = (PIMAGE_NT_HEADERS)((uintptr_t)module + ((PIMAGE_DOS_HEADER)module)->e_lfanew);
if (pe->OptionalHeader.CheckSum != patch.checksum)
return false;
void* patch_addr = (void*)((uintptr_t)module + patch.rva);
size_t patch_size = patch.length;
ModifyProtectedRegion(patch_addr, patch_size, [=] { memset(patch_addr, 0x90, patch_size); });
FlushInstructionCache(GetCurrentProcess(), patch_addr, patch_size);
return true;
}
#pragma comment(lib, "version.lib")
struct Version
{
u16 major;
u16 minor;
u16 build;
u16 qfe;
Version& operator=(u64&& rhs)
{
major = static_cast<u16>(rhs >> 48);
minor = static_cast<u16>(rhs >> 32);
build = static_cast<u16>(rhs >> 16);
qfe = static_cast<u16>(rhs);
return *this;
}
};
static std::optional<std::wstring> GetModulePath(const wchar_t* name)
{
auto module = GetModuleHandleW(name);
if (module == nullptr)
return std::nullopt;
return Common::GetModuleName(module);
}
static bool GetModuleVersion(const wchar_t* name, Version* version)
{
auto path = GetModulePath(name);
if (!path)
return false;
DWORD handle;
DWORD data_len = GetFileVersionInfoSizeW(path->c_str(), &handle);
if (!data_len)
return false;
std::vector<u8> block(data_len);
if (!GetFileVersionInfoW(path->c_str(), 0, data_len, block.data()))
return false;
void* buf;
UINT buf_len;
if (!VerQueryValueW(block.data(), LR"(\)", &buf, &buf_len))
return false;
auto info = static_cast<VS_FIXEDFILEINFO*>(buf);
*version = (static_cast<u64>(info->dwFileVersionMS) << 32) | info->dwFileVersionLS;
return true;
}
void CompatPatchesInstall(LdrWatcher* watcher)
{
watcher->Install({{L"EZFRD64.dll", L"811EZFRD64.DLL"}, [](const LdrDllLoadEvent& event) {
@ -206,40 +136,6 @@ void CompatPatchesInstall(LdrWatcher* watcher)
auto patcher = ImportPatcher(event.base_address);
patcher.PatchIAT("kernel32.dll", "HeapCreate", HeapCreateLow4GB);
}});
watcher->Install(
{{L"ucrtbase.dll"}, [](const LdrDllLoadEvent& event) {
// ucrtbase implements caching between fseek/fread, old versions have a bug
// such that some reads return incorrect data. This causes noticeable bugs
// in dolphin since we use these APIs for reading game images.
Version version;
if (!GetModuleVersion(event.name.c_str(), &version))
return;
const u16 fixed_build = 10548;
if (version.build >= fixed_build)
return;
const UcrtPatchInfo patches[] = {
// 10.0.10240.16384 (th1.150709-1700)
{0xF61ED, 0x6AE7B, 5},
// 10.0.10240.16390 (th1_st1.150714-1601)
{0xF5ED9, 0x6AE7B, 5},
// 10.0.10137.0 (th1.150602-2238)
{0xF8B5E, 0x63ED6, 2},
};
for (const auto& patch : patches)
{
if (ApplyUcrtPatch(event.name.c_str(), patch))
return;
}
// If we reach here, the version is buggy (afaik) and patching failed
const auto msg = fmt::format(
L"You are running {} version {}.{}.{}.{}.\n"
L"An important fix affecting Dolphin was introduced in build {}.\n"
L"You can use Dolphin, but there will be known bugs.\n"
L"Please update this file by installing the latest Universal C Runtime.\n",
event.name, version.major, version.minor, version.build, version.qfe, fixed_build);
// Use MessageBox for maximal user annoyance
MessageBoxW(nullptr, msg.c_str(), L"WARNING: BUGGY UCRT VERSION", MB_ICONEXCLAMATION);
}});
}
int __cdecl EnableCompatPatches()