Lightemerald/windows-user-space-emulator
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KUSD MMIO

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momo5502
2024-11-23 19:32:14 +01:00
parent 325e8115af
commit 2e2b4ffb2f
5 changed files with 282 additions and 112 deletions
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18
src/windows-emulator/syscalls.cpp
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@@ -35,15 +35,9 @@ namespace
if (performance_frequency)
{
int64_t frequency{};
c.proc.kusd.access([&](const KUSER_SHARED_DATA& kusd)
{
frequency = kusd.QpcFrequency;
});
performance_frequency.access([&](LARGE_INTEGER& value)
{
value.QuadPart = frequency;
value.QuadPart = c.proc.kusd->get().QpcFrequency;
});
}
@@ -540,12 +534,8 @@ namespace
c.emu.allocate_memory(address,
c.proc.shared_section_size, memory_permission::read_write);
size_t windows_dir_size{};
c.proc.kusd.access([&](const KUSER_SHARED_DATA& kusd)
{
const std::wstring_view windows_dir = kusd.NtSystemRoot.arr;
windows_dir_size = windows_dir.size() * 2;
});
const std::wstring_view windows_dir = c.proc.kusd->get().NtSystemRoot.arr;
const auto windows_dir_size = windows_dir.size() * 2;
constexpr auto windows_dir_offset = 0x10;
c.emu.write_memory(address + 8, windows_dir_offset);
@@ -555,7 +545,7 @@ namespace
const emulator_object<UNICODE_STRING> windir_obj{c.emu, obj_address};
windir_obj.access([&](UNICODE_STRING& ucs)
{
const auto dir_address = c.proc.kusd.value() + offsetof(KUSER_SHARED_DATA, NtSystemRoot);
const auto dir_address = kusd_mmio::address() + offsetof(KUSER_SHARED_DATA, NtSystemRoot);
ucs.Buffer = reinterpret_cast<wchar_t*>(dir_address - obj_address);
ucs.Length = static_cast<uint16_t>(windows_dir_size);