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XThread: Special case save/restore for threads no longer running.

This commit is contained in:
Dr. Chat 2015-12-14 14:32:55 -06:00 committed by Ben Vanik
parent b58e9afbf1
commit 07d31862f1
1 changed files with 107 additions and 84 deletions
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39
src/xenia/kernel/xthread.cc
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@ -775,7 +775,12 @@ bool XThread::StepToAddress(uint32_t pc) {
fence.Signal();
});
if (bp.Install()) {
thread_->Resume();
// HACK
uint32_t suspend_count = 1;
while (suspend_count) {
thread_->Resume(&suspend_count);
}
fence.Wait();
bp.Uninstall();
} else {
@ -859,7 +864,12 @@ uint32_t XThread::StepIntoBranch(uint32_t pc) {
return 0;
}
thread_->Resume();
// HACK
uint32_t suspend_count = 1;
while (suspend_count) {
thread_->Resume(&suspend_count);
}
fence.Wait();
bpt.Uninstall();
bpf.Uninstall();
@ -1005,9 +1015,10 @@ uint32_t XThread::StepToSafePoint(bool ignore_host) {
struct ThreadSavedState {
uint32_t thread_id;
bool main_thread;
bool is_main_thread; // Is this the main thread?
bool is_running;
// Clock settings
// Clock settings (invalid if not running)
uint64_t tick_count_;
uint64_t system_time_;
@ -1018,6 +1029,8 @@ struct ThreadSavedState {
uint32_t stack_limit; // Low address
uint32_t stack_alloc_base; // Allocation address
uint32_t stack_alloc_size; // Allocation size
// Context (invalid if not running)
struct {
uint64_t lr;
uint64_t ctr;
@ -1042,13 +1055,16 @@ bool XThread::Save(ByteStream* stream) {
XELOGD("XThread %.8X serializing...", handle());
uint32_t pc = StepToSafePoint();
uint32_t pc = 0;
if (running_) {
pc = StepToSafePoint();
if (!pc) {
XELOGE("XThread %.8X failed to save: could not step to a safe point!",
handle());
assert_always();
return false;
}
}
if (!SaveObject(stream)) {
return false;
@ -1059,7 +1075,8 @@ bool XThread::Save(ByteStream* stream) {
ThreadSavedState state;
state.thread_id = thread_id_;
state.main_thread = main_thread_;
state.is_main_thread = main_thread_;
state.is_running = running_;
state.apc_head = apc_list_.head();
state.tls_address = tls_address_;
state.pcr_address = pcr_address_;
@ -1068,6 +1085,7 @@ bool XThread::Save(ByteStream* stream) {
state.stack_alloc_base = stack_alloc_base_;
state.stack_alloc_size = stack_alloc_size_;
if (running_) {
state.tick_count_ = Clock::QueryGuestTickCount();
state.system_time_ =
Clock::QueryGuestSystemTime() - Clock::guest_system_time_base();
@ -1093,6 +1111,7 @@ bool XThread::Save(ByteStream* stream) {
state.context.xer_so = context->xer_so;
state.context.vscr_sat = context->vscr_sat;
state.context.pc = pc;
}
stream->Write(&state, sizeof(ThreadSavedState));
return true;
@ -1121,7 +1140,7 @@ object_ref<XThread> XThread::Restore(KernelState* kernel_state,
ThreadSavedState state;
stream->Read(&state, sizeof(ThreadSavedState));
thread->thread_id_ = state.thread_id;
thread->main_thread_ = state.main_thread;
thread->main_thread_ = state.is_main_thread;
thread->apc_list_.set_head(state.apc_head);
thread->tls_address_ = state.tls_address;
thread->pcr_address_ = state.pcr_address;
@ -1138,6 +1157,8 @@ object_ref<XThread> XThread::Restore(KernelState* kernel_state,
thread->thread_state_ =
new cpu::ThreadState(kernel_state->processor(), thread->thread_id_,
thread->stack_base_, thread->pcr_address_);
if (state.is_running) {
auto context = thread->thread_state_->context();
context->kernel_state = kernel_state;
context->lr = state.context.lr;
@ -1185,7 +1206,8 @@ object_ref<XThread> XThread::Restore(KernelState* kernel_state,
current_thread_tls_ = thread;
uint32_t pc = state.context.pc;
thread->kernel_state()->processor()->ExecuteRaw(thread->thread_state_, pc);
thread->kernel_state()->processor()->ExecuteRaw(thread->thread_state_,
pc);
current_thread_tls_ = nullptr;
@ -1198,6 +1220,7 @@ object_ref<XThread> XThread::Restore(KernelState* kernel_state,
if (thread->emulator()->debugger()) {
thread->emulator()->debugger()->OnThreadCreated(thread);
}
}
return object_ref<XThread>(thread);
}