Lightemerald/windows-user-space-emulator
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More syscall features

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momo5502
2024-09-11 13:22:52 +02:00
parent 46302df864
commit ddee229fca
2 changed files with 80 additions and 1 deletions
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80
src/windows_emulator/syscalls.cpp
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@@ -74,7 +74,8 @@ namespace
return syscalls;
}
uint64_t get_syscall_id(const std::vector<std::string>& ntdll_syscalls, const std::vector<std::string>& win32u_syscalls, const std::string_view name)
uint64_t get_syscall_id(const std::vector<std::string>& ntdll_syscalls,
const std::vector<std::string>& win32u_syscalls, const std::string_view name)
{
for (size_t i = 0; i < ntdll_syscalls.size(); ++i)
{
@@ -607,6 +608,30 @@ namespace
return STATUS_SUCCESS;
}
if (info_class == SystemProcessorInformation)
{
if (return_length)
{
return_length.write(sizeof(SYSTEM_PROCESSOR_INFORMATION));
}
if (system_information_length != sizeof(SYSTEM_PROCESSOR_INFORMATION))
{
return STATUS_BUFFER_TOO_SMALL;
}
const emulator_object<SYSTEM_PROCESSOR_INFORMATION> info_obj{c.emu, system_information};
info_obj.access([&](SYSTEM_PROCESSOR_INFORMATION& info)
{
memset(&info, 0, sizeof(info));
info.MaximumProcessors = 2;
info.ProcessorArchitecture = PROCESSOR_ARCHITECTURE_AMD64;
});
return STATUS_SUCCESS;
}
if (info_class == SystemNumaProcessorMap)
{
if (return_length)
@@ -1261,6 +1286,58 @@ namespace
return STATUS_SUCCESS;
}
NTSTATUS handle_NtAddAtomEx(const syscall_context& c, const uint64_t atom_name, const ULONG length,
const emulator_object<RTL_ATOM> atom, const ULONG /*flags*/)
{
std::wstring name{};
name.resize(length / 2);
c.emu.read_memory(atom_name, name.data(), length);
uint16_t index = 0;
if (!c.proc.atoms.empty())
{
auto i = c.proc.atoms.end();
--i;
index = i->first + 1;
}
std::optional<uint16_t> last_entry{};
for (auto& entry : c.proc.atoms)
{
if (entry.second == name)
{
if (atom)
{
atom.write(entry.first);
return STATUS_SUCCESS;
}
}
if (entry.first > 0)
{
if (!last_entry)
{
index = 0;
}
else
{
const auto diff = entry.first - *last_entry;
if (diff > 1)
{
index = *last_entry + 1;
}
}
}
last_entry = entry.first;
}
c.proc.atoms[index] = std::move(name);
atom.write(index);
return STATUS_SUCCESS;
}
}
syscall_dispatcher::syscall_dispatcher(const exported_symbols& ntdll_exports, const exported_symbols& win32u_exports)
@@ -1329,6 +1406,7 @@ syscall_dispatcher::syscall_dispatcher(const exported_symbols& ntdll_exports, co
add_handler(NtReadVirtualMemory);
add_handler(NtQueryInformationToken);
add_handler(NtDxgkIsFeatureEnabled);
add_handler(NtAddAtomEx);
#undef add_handler
}