mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
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360 lines
16 KiB
C++
360 lines
16 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern::svc {
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/* ============================= Common ============================= */
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namespace {
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constexpr bool IsValidVirtualCoreId(int32_t core_id) {
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return (0 <= core_id && core_id < static_cast<int32_t>(cpu::NumVirtualCores));
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}
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Result CreateThread(ams::svc::Handle *out, ams::svc::ThreadFunc f, uintptr_t arg, uintptr_t stack_bottom, int32_t priority, int32_t core_id) {
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/* Adjust core id, if it's the default magic. */
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KProcess &process = GetCurrentProcess();
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if (core_id == ams::svc::IdealCoreUseProcessValue) {
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core_id = process.GetIdealCoreId();
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}
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/* Validate arguments. */
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R_UNLESS(IsValidVirtualCoreId(core_id), svc::ResultInvalidCoreId());
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R_UNLESS(((1ul << core_id) & process.GetCoreMask()) != 0, svc::ResultInvalidCoreId());
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R_UNLESS(ams::svc::HighestThreadPriority <= priority && priority <= ams::svc::LowestThreadPriority, svc::ResultInvalidPriority());
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R_UNLESS(process.CheckThreadPriority(priority), svc::ResultInvalidPriority());
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/* Reserve a new thread from the process resource limit (waiting up to 100ms). */
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KScopedResourceReservation thread_reservation(std::addressof(process), ams::svc::LimitableResource_ThreadCountMax, 1, KHardwareTimer::GetTick() + ams::svc::Tick(TimeSpan::FromMilliSeconds(100)));
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R_UNLESS(thread_reservation.Succeeded(), svc::ResultLimitReached());
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/* Create the thread. */
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KThread *thread = KThread::Create();
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R_UNLESS(thread != nullptr, svc::ResultOutOfResource());
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ON_SCOPE_EXIT { thread->Close(); };
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/* Initialize the thread. */
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{
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KScopedLightLock lk(process.GetStateLock());
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R_TRY(KThread::InitializeUserThread(thread, reinterpret_cast<KThreadFunction>(static_cast<uintptr_t>(f)), arg, stack_bottom, priority, core_id, std::addressof(process)));
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}
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/* Commit the thread reservation. */
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thread_reservation.Commit();
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/* Clone the current fpu status to the new thread. */
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thread->GetContext().CloneFpuStatus();
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/* Register the new thread. */
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KThread::Register(thread);
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/* Add the thread to the handle table. */
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R_TRY(process.GetHandleTable().Add(out, thread));
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R_SUCCEED();
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}
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Result StartThread(ams::svc::Handle thread_handle) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Try to start the thread. */
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R_RETURN(thread->Run());
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}
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void ExitThread() {
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GetCurrentThread().Exit();
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MESOSPHERE_PANIC("Thread survived call to exit");
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}
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void SleepThread(int64_t ns) {
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/* When the input tick is positive, sleep. */
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if (AMS_LIKELY(ns > 0)) {
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/* Convert the timeout from nanoseconds to ticks. */
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/* NOTE: Nintendo does not use this conversion logic in WaitSynchronization... */
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s64 timeout;
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const ams::svc::Tick offset_tick(TimeSpan::FromNanoSeconds(ns));
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if (AMS_LIKELY(offset_tick > 0)) {
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timeout = KHardwareTimer::GetTick() + offset_tick + 2;
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if (AMS_UNLIKELY(timeout <= 0)) {
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timeout = std::numeric_limits<s64>::max();
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}
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} else {
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timeout = std::numeric_limits<s64>::max();
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}
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/* Sleep. */
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/* NOTE: Nintendo does not check the result of this sleep. */
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GetCurrentThread().Sleep(timeout);
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} else if (ns == ams::svc::YieldType_WithoutCoreMigration) {
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KScheduler::YieldWithoutCoreMigration();
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} else if (ns == ams::svc::YieldType_WithCoreMigration) {
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KScheduler::YieldWithCoreMigration();
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} else if (ns == ams::svc::YieldType_ToAnyThread) {
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KScheduler::YieldToAnyThread();
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} else {
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/* Nintendo does nothing at all if an otherwise invalid value is passed. */
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}
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}
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Result GetThreadPriority(int32_t *out_priority, ams::svc::Handle thread_handle) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the thread's priority. */
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*out_priority = thread->GetPriority();
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R_SUCCEED();
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}
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Result SetThreadPriority(ams::svc::Handle thread_handle, int32_t priority) {
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/* Get the current process. */
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KProcess &process = GetCurrentProcess();
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/* Get the thread from its handle. */
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KScopedAutoObject thread = process.GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Validate the thread is owned by the current process. */
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R_UNLESS(thread->GetOwnerProcess() == GetCurrentProcessPointer(), svc::ResultInvalidHandle());
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/* Validate the priority. */
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R_UNLESS(ams::svc::HighestThreadPriority <= priority && priority <= ams::svc::LowestThreadPriority, svc::ResultInvalidPriority());
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R_UNLESS(process.CheckThreadPriority(priority), svc::ResultInvalidPriority());
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/* Set the thread priority. */
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thread->SetBasePriority(priority);
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R_SUCCEED();
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}
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Result GetThreadCoreMask(int32_t *out_core_id, uint64_t *out_affinity_mask, ams::svc::Handle thread_handle) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the core mask. */
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R_TRY(thread->GetCoreMask(out_core_id, out_affinity_mask));
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R_SUCCEED();
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}
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Result SetThreadCoreMask(ams::svc::Handle thread_handle, int32_t core_id, uint64_t affinity_mask) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Validate the thread is owned by the current process. */
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R_UNLESS(thread->GetOwnerProcess() == GetCurrentProcessPointer(), svc::ResultInvalidHandle());
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/* Determine the core id/affinity mask. */
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if (core_id == ams::svc::IdealCoreUseProcessValue) {
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core_id = GetCurrentProcess().GetIdealCoreId();
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affinity_mask = (1ul << core_id);
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} else {
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/* Validate the affinity mask. */
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const u64 process_core_mask = GetCurrentProcess().GetCoreMask();
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R_UNLESS((affinity_mask | process_core_mask) == process_core_mask, svc::ResultInvalidCoreId());
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R_UNLESS(affinity_mask != 0, svc::ResultInvalidCombination());
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/* Validate the core id. */
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if (IsValidVirtualCoreId(core_id)) {
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R_UNLESS(((1ul << core_id) & affinity_mask) != 0, svc::ResultInvalidCombination());
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} else {
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R_UNLESS(core_id == ams::svc::IdealCoreNoUpdate || core_id == ams::svc::IdealCoreDontCare, svc::ResultInvalidCoreId());
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}
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}
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/* Set the core mask. */
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R_TRY(thread->SetCoreMask(core_id, affinity_mask));
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R_SUCCEED();
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}
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Result GetThreadId(uint64_t *out_thread_id, ams::svc::Handle thread_handle) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the thread's id. */
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*out_thread_id = thread->GetId();
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R_SUCCEED();
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}
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Result GetThreadContext3(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle thread_handle) {
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Require the handle be to a non-current thread in the current process. */
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R_UNLESS(thread->GetOwnerProcess() == GetCurrentProcessPointer(), svc::ResultInvalidHandle());
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R_UNLESS(thread.GetPointerUnsafe() != GetCurrentThreadPointer(), svc::ResultBusy());
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/* Get the thread context. */
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ams::svc::ThreadContext context = {};
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R_TRY(thread->GetThreadContext3(std::addressof(context)));
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/* Copy the thread context to user space. */
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R_TRY(out_context.CopyFrom(std::addressof(context)));
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R_SUCCEED();
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}
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Result GetThreadList(int32_t *out_num_threads, KUserPointer<uint64_t *> out_thread_ids, int32_t max_out_count, ams::svc::Handle debug_handle) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Validate that the out count is valid. */
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R_UNLESS((0 <= max_out_count && max_out_count <= static_cast<int32_t>(std::numeric_limits<int32_t>::max() / sizeof(u64))), svc::ResultOutOfRange());
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/* Validate that the pointer is in range. */
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if (max_out_count > 0) {
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R_UNLESS(GetCurrentProcess().GetPageTable().Contains(KProcessAddress(out_thread_ids.GetUnsafePointer()), max_out_count * sizeof(u64)), svc::ResultInvalidCurrentMemory());
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}
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/* Get the handle table. */
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auto &handle_table = GetCurrentProcess().GetHandleTable();
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/* Try to get as a debug object. */
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KScopedAutoObject debug = handle_table.GetObject<KDebug>(debug_handle);
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if (debug.IsNotNull()) {
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/* Check that the debug object has a process. */
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R_UNLESS(debug->IsAttached(), svc::ResultProcessTerminated());
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R_UNLESS(debug->OpenProcess(), svc::ResultProcessTerminated());
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ON_SCOPE_EXIT { debug->CloseProcess(); };
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/* Get the thread list. */
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R_TRY(debug->GetProcessUnsafe()->GetThreadList(out_num_threads, out_thread_ids, max_out_count));
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} else {
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/* Only allow getting as a process (or global) if the caller does not have ForceDebugProd. */
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R_UNLESS(!GetCurrentProcess().CanForceDebugProd(), svc::ResultInvalidHandle());
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/* Try to get as a process. */
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KScopedAutoObject process = handle_table.GetObjectWithoutPseudoHandle<KProcess>(debug_handle);
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if (process.IsNotNull()) {
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/* Get the thread list. */
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R_TRY(process->GetThreadList(out_num_threads, out_thread_ids, max_out_count));
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} else {
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/* If the object is not a process, the caller may want the global thread list. */
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R_UNLESS(debug_handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* If passed invalid handle, we should return the global thread list. */
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R_TRY(KThread::GetThreadList(out_num_threads, out_thread_ids, max_out_count));
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}
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}
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R_SUCCEED();
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}
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}
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/* ============================= 64 ABI ============================= */
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Result CreateThread64(ams::svc::Handle *out_handle, ams::svc::ThreadFunc func, ams::svc::Address arg, ams::svc::Address stack_bottom, int32_t priority, int32_t core_id) {
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R_RETURN(CreateThread(out_handle, func, arg, stack_bottom, priority, core_id));
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}
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Result StartThread64(ams::svc::Handle thread_handle) {
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R_RETURN(StartThread(thread_handle));
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}
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void ExitThread64() {
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return ExitThread();
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}
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void SleepThread64(int64_t ns) {
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return SleepThread(ns);
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}
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Result GetThreadPriority64(int32_t *out_priority, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadPriority(out_priority, thread_handle));
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}
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Result SetThreadPriority64(ams::svc::Handle thread_handle, int32_t priority) {
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R_RETURN(SetThreadPriority(thread_handle, priority));
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}
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Result GetThreadCoreMask64(int32_t *out_core_id, uint64_t *out_affinity_mask, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadCoreMask(out_core_id, out_affinity_mask, thread_handle));
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}
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Result SetThreadCoreMask64(ams::svc::Handle thread_handle, int32_t core_id, uint64_t affinity_mask) {
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R_RETURN(SetThreadCoreMask(thread_handle, core_id, affinity_mask));
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}
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Result GetThreadId64(uint64_t *out_thread_id, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadId(out_thread_id, thread_handle));
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}
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Result GetThreadContext364(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadContext3(out_context, thread_handle));
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}
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Result GetThreadList64(int32_t *out_num_threads, KUserPointer<uint64_t *> out_thread_ids, int32_t max_out_count, ams::svc::Handle debug_handle) {
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R_RETURN(GetThreadList(out_num_threads, out_thread_ids, max_out_count, debug_handle));
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}
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/* ============================= 64From32 ABI ============================= */
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Result CreateThread64From32(ams::svc::Handle *out_handle, ams::svc::ThreadFunc func, ams::svc::Address arg, ams::svc::Address stack_bottom, int32_t priority, int32_t core_id) {
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R_RETURN(CreateThread(out_handle, func, arg, stack_bottom, priority, core_id));
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}
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Result StartThread64From32(ams::svc::Handle thread_handle) {
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R_RETURN(StartThread(thread_handle));
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}
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void ExitThread64From32() {
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return ExitThread();
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}
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void SleepThread64From32(int64_t ns) {
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return SleepThread(ns);
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}
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Result GetThreadPriority64From32(int32_t *out_priority, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadPriority(out_priority, thread_handle));
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}
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Result SetThreadPriority64From32(ams::svc::Handle thread_handle, int32_t priority) {
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R_RETURN(SetThreadPriority(thread_handle, priority));
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}
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Result GetThreadCoreMask64From32(int32_t *out_core_id, uint64_t *out_affinity_mask, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadCoreMask(out_core_id, out_affinity_mask, thread_handle));
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}
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Result SetThreadCoreMask64From32(ams::svc::Handle thread_handle, int32_t core_id, uint64_t affinity_mask) {
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R_RETURN(SetThreadCoreMask(thread_handle, core_id, affinity_mask));
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}
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Result GetThreadId64From32(uint64_t *out_thread_id, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadId(out_thread_id, thread_handle));
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}
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Result GetThreadContext364From32(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle thread_handle) {
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R_RETURN(GetThreadContext3(out_context, thread_handle));
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}
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Result GetThreadList64From32(int32_t *out_num_threads, KUserPointer<uint64_t *> out_thread_ids, int32_t max_out_count, ams::svc::Handle debug_handle) {
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R_RETURN(GetThreadList(out_num_threads, out_thread_ids, max_out_count, debug_handle));
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}
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}
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