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kern: implement 64-virtual-core interface

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Michael Scire 2020-12-01 15:54:31 -08:00 • committed by SciresM
parent 3fd59b61bc
commit 28f9b534b6
8 changed files with 224 additions and 96 deletions
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37
libraries/libmesosphere/source/svc/kern_svc_info.cpp
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@ -206,28 +206,35 @@ namespace ams::kern::svc {
case ams::svc::InfoType_ThreadTickCount:
{
/* Verify the requested core is valid. */
const bool core_valid = (info_subtype == static_cast<u64>(-1ul)) || (info_subtype < cpu::NumCores);
const bool core_valid = (info_subtype == static_cast<u64>(-1ul)) || (info_subtype < util::size(cpu::VirtualToPhysicalCoreMap));
R_UNLESS(core_valid, svc::ResultInvalidCombination());
/* Get the thread from its handle. */
KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(handle);
R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
/* Get the tick count. */
/* Disable interrupts while we get the tick count. */
s64 tick_count;
if (info_subtype == static_cast<u64>(-1ul)) {
tick_count = thread->GetCpuTime();
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
} else {
tick_count = thread->GetCpuTime(static_cast<s32>(info_subtype));
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe() && static_cast<s32>(info_subtype) == GetCurrentCoreId()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
{
KScopedInterruptDisable di;
if (info_subtype == static_cast<u64>(-1ul)) {
tick_count = thread->GetCpuTime();
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
} else {
const s32 phys_core = cpu::VirtualToPhysicalCoreMap[info_subtype];
MESOSPHERE_ABORT_UNLESS(phys_core < static_cast<s32>(cpu::NumCores));
tick_count = thread->GetCpuTime(phys_core);
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe() && phys_core == GetCurrentCoreId()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
}
}