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Assign a CPU number based on the proc affinity mask on thread creation. Fixes audio threads not starting properly on Frogger 2, and possibly other titles.

This commit is contained in:
gibbed 2015-05-28 12:51:00 -05:00
parent 3300945660
commit 0050b3df83
1 changed files with 16 additions and 2 deletions
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18
src/xenia/kernel/objects/xthread.cc
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@ -133,6 +133,17 @@ void XThread::set_name(const std::string& name) {
xe::threading::set_name(thread_handle_, name);
}
uint8_t fake_CPU_number(uint8_t proc_mask) {
if (!proc_mask) {
return 0; // is this reasonable?
}
assert_false(proc_mask & 0xC0);
uint8_t cpu_number = 7 - xe::lzcnt(proc_mask);
assert_true(1 << cpu_number == proc_mask);
return cpu_number;
}
X_STATUS XThread::Create() {
// Allocate thread state block from heap.
// This is set as r13 for user code and some special inlined Win32 calls
@ -196,6 +207,8 @@ X_STATUS XThread::Create() {
thread_state_->thread_id(), thread_state_->stack_limit(),
thread_state_->stack_base());
uint8_t proc_mask = static_cast<uint8_t>(creation_params_.creation_flags >> 24);
uint8_t* pcr = memory()->TranslateVirtual(pcr_address_);
std::memset(pcr, 0x0, 0x2D8 + 0xAB0); // Zero the PCR
xe::store_and_swap<uint32_t>(pcr + 0x000, tls_address_);
@ -204,7 +217,7 @@ X_STATUS XThread::Create() {
thread_state_->stack_size());
xe::store_and_swap<uint32_t>(pcr + 0x074, thread_state_->stack_address());
xe::store_and_swap<uint32_t>(pcr + 0x100, thread_state_address_);
xe::store_and_swap<uint8_t>(pcr + 0x10C, 1); // Current CPU(?)
xe::store_and_swap<uint8_t>(pcr + 0x10C, fake_CPU_number(proc_mask)); // Current CPU(?)
xe::store_and_swap<uint32_t>(pcr + 0x150, 0); // DPC active bool?
// Setup the thread state block (last error/etc).
@ -256,7 +269,7 @@ X_STATUS XThread::Create() {
return return_code;
}
uint32_t proc_mask = creation_params_.creation_flags >> 24;
//uint32_t proc_mask = creation_params_.creation_flags >> 24;
if (proc_mask) {
SetAffinity(proc_mask);
}
@ -571,6 +584,7 @@ void XThread::SetAffinity(uint32_t affinity) {
XELOGW("Too few processors - scheduling will be wonky");
}
if (!FLAGS_ignore_thread_affinities) {
SetActiveCpu(fake_CPU_number(affinity));
SetThreadAffinityMask(reinterpret_cast<HANDLE>(thread_handle_), affinity);
}
}