Lightemerald/windows-user-space-emulator
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Fix dynamic TLS for WOW64

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This commit is contained in:
ssvine
2025-12-30 15:18:33 +03:00
parent 04ff582fa9
commit 1ebe5356c9
2 changed files with 35 additions and 7 deletions
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41
src/windows-emulator/syscalls/thread.cpp
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@@ -102,17 +102,44 @@ namespace syscalls
for (const auto& t : c.proc.threads | std::views::values)
{
t.teb64->access([&](TEB64& teb) {
if (tls_cell < TLS_MINIMUM_AVAILABLE)
if (tls_cell < TLS_MINIMUM_AVAILABLE)
{
if (c.proc.is_wow64_process)
{
teb.TlsSlots.arr[tls_cell] = 0;
if (t.teb32.has_value())
{
t.teb32->access([&](TEB32& teb32) { teb32.TlsSlots.arr[tls_cell] = 0; });
}
}
else if (teb.TlsExpansionSlots)
else
{
const emulator_object<emulator_pointer> expansion_slots(c.emu, teb.TlsExpansionSlots);
expansion_slots.write(0, tls_cell - TLS_MINIMUM_AVAILABLE);
t.teb64->access([&](TEB64& teb64) { teb64.TlsSlots.arr[tls_cell] = 0; });
}
});
}
else if (tls_cell < TLS_MINIMUM_AVAILABLE + TLS_EXPANSION_SLOTS)
{
if (c.proc.is_wow64_process)
{
if (t.teb32.has_value())
{
t.teb32->access([&](TEB32& teb32) {
if (teb32.TlsExpansionSlots)
{
c.emu.write_memory<uint32_t>(teb32.TlsExpansionSlots + (4 * tls_cell) - TLS_MINIMUM_AVAILABLE, 0);
}
});
}
}
else
{
t.teb64->access([&](TEB64& teb64) {
if (teb64.TlsExpansionSlots)
{
c.emu.write_memory<uint64_t>(teb64.TlsExpansionSlots + (8 * tls_cell) - TLS_MINIMUM_AVAILABLE, 0);
}
});
}
}
}
return STATUS_SUCCESS;