Implement kernel processes

This commit is contained in:
disjtqz
2023-10-12 15:34:27 -04:00
committed by Radosław Gliński
parent ba7397952d
commit a7b047b2a2
15 changed files with 338 additions and 227 deletions

View File

@@ -432,50 +432,6 @@ uint64_t Processor::Execute(ThreadState* thread_state, uint32_t address,
return context->r[3];
}
uint64_t Processor::ExecuteInterrupt(ThreadState* thread_state,
uint32_t address, uint64_t args[],
size_t arg_count) {
SCOPE_profile_cpu_f("cpu");
// Hold the global lock during interrupt dispatch.
// This will block if any code is in a critical region (has interrupts
// disabled) or if any other interrupt is executing.
auto global_lock = global_critical_region_.Acquire();
auto context = thread_state->context();
assert_true(arg_count <= 5);
for (size_t i = 0; i < arg_count; ++i) {
context->r[3 + i] = args[i];
}
// TLS ptr must be zero during interrupts. Some games check this and
// early-exit routines when under interrupts.
auto pcr_address =
memory_->TranslateVirtual(static_cast<uint32_t>(context->r[13]));
uint32_t old_tls_ptr = xe::load_and_swap<uint32_t>(pcr_address);
xe::store_and_swap<uint32_t>(pcr_address, 0);
if (!Execute(thread_state, address)) {
return 0xDEADBABE;
}
// Restores TLS ptr.
xe::store_and_swap<uint32_t>(pcr_address, old_tls_ptr);
return context->r[3];
}
Irql Processor::RaiseIrql(Irql new_value) {
return static_cast<Irql>(
xe::atomic_exchange(static_cast<uint32_t>(new_value),
reinterpret_cast<volatile uint32_t*>(&irql_)));
}
void Processor::LowerIrql(Irql old_value) {
xe::atomic_exchange(static_cast<uint32_t>(old_value),
reinterpret_cast<volatile uint32_t*>(&irql_));
}
bool Processor::Save(ByteStream* stream) {
stream->Write(kProcessorSaveSignature);
return true;