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kern: mostly implement KThread::Initialize

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This commit is contained in:
Michael Scire 2020-01-31 01:53:30 -08:00
parent d9db723bc8
commit b2b1129cc0
11 changed files with 383 additions and 15 deletions
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205
libraries/libmesosphere/source/kern_k_thread.cpp Normal file
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@ -0,0 +1,205 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mesosphere.hpp>
namespace ams::kern {
Result KThread::Initialize(KThreadFunction func, uintptr_t arg, void *kern_stack_top, KProcessAddress user_stack_top, s32 prio, s32 core, KProcess *owner, ThreadType type) {
/* Assert parameters are valid. */
MESOSPHERE_ASSERT_THIS();
MESOSPHERE_ASSERT(kern_stack_top != nullptr);
MESOSPHERE_ASSERT((type == ThreadType_Main) || (ams::svc::HighestThreadPriority <= prio && prio <= ams::svc::LowestThreadPriority));
MESOSPHERE_ASSERT((owner != nullptr) || (type != ThreadType_User));
MESOSPHERE_ASSERT(0 <= core && core < static_cast<s32>(cpu::NumCores));
/* First, clear the TLS address. */
this->tls_address = Null<KProcessAddress>;
const uintptr_t kern_stack_top_address = reinterpret_cast<uintptr_t>(kern_stack_top);
/* Next, assert things based on the type. */
switch (type) {
case ThreadType_Main:
{
MESOSPHERE_ASSERT(arg == 0);
}
[[fallthrough]];
case ThreadType_HighPriority:
{
MESOSPHERE_ASSERT(core == GetCurrentCoreId());
}
[[fallthrough]];
case ThreadType_Kernel:
{
MESOSPHERE_ASSERT(user_stack_top == 0);
MESOSPHERE_ASSERT(util::IsAligned(kern_stack_top_address, PageSize));
}
[[fallthrough]];
case ThreadType_User:
{
MESOSPHERE_ASSERT((owner == nullptr) || (owner->GetCoreMask() | (1ul << core)) == owner->GetCoreMask());
MESOSPHERE_ASSERT((owner == nullptr) || (owner->GetPriorityMask() | (1ul << prio)) == owner->GetPriorityMask());
}
break;
default:
MESOSPHERE_PANIC("KThread::Initialize: Unknown ThreadType %u", static_cast<u32>(type));
break;
}
/* Set the ideal core ID and affinity mask. */
this->ideal_core_id = core;
this->affinity_mask.SetAffinity(core, true);
/* Set the thread state. */
this->thread_state = (type == ThreadType_Main) ? ThreadState_Runnable : ThreadState_Initialized;
/* Set TLS address and TLS heap address. */
/* NOTE: Nintendo wrote TLS address above already, but official code really does write tls address twice. */
this->tls_address = 0;
this->tls_heap_address = 0;
/* Set parent and condvar tree. */
this->parent = nullptr;
this->cond_var_tree = nullptr;
/* Set sync booleans. */
this->signaled = false;
this->ipc_cancelled = false;
this->termination_requested = false;
this->wait_cancelled = false;
this->cancellable = false;
/* Set core ID and wait result. */
this->core_id = this->ideal_core_id;
this->wait_result = svc::ResultNoSynchronizationObject();
/* Set the stack top. */
this->kernel_stack_top = kern_stack_top;
/* Set priorities. */
this->priority = prio;
this->base_priority = prio;
/* Set sync object and waiting lock to null. */
this->synced_object = nullptr;
this->waiting_lock = nullptr;
/* Initialize sleeping queue. */
this->sleeping_queue_entry.Initialize();
this->sleeping_queue = nullptr;
/* Set suspend flags. */
this->suspend_request_flags = 0;
this->suspend_allowed_flags = ThreadState_SuspendFlagMask;
/* We're neither debug attached, nor are we nesting our priority inheritance. */
this->debug_attached = false;
this->priority_inheritance_count = 0;
/* We haven't been scheduled, and we have done no light IPC. */
this->schedule_count = -1;
this->last_scheduled_tick = 0;
this->light_ipc_data = nullptr;
/* We're not waiting for a lock, and we haven't disabled migration. */
this->lock_owner = nullptr;
this->num_core_migration_disables = 0;
/* We have no waiters, but we do have an entrypoint. */
this->num_kernel_waiters = 0;
this->entrypoint = reinterpret_cast<uintptr_t>(func);
/* We don't need a release (probably), and we've spent no time on the cpu. */
this->resource_limit_release_hint = 0;
this->cpu_time = 0;
/* Clear our stack parameters. */
std::memset(static_cast<void *>(std::addressof(this->GetStackParameters())), 0, sizeof(StackParameters));
/* Setup the TLS, if needed. */
if (type == ThreadType_User) {
/* TODO: R_TRY(owner->CreateThreadLocalRegion(&this->tls_address)); */
/* TODO: this->tls_heap_address = owner->GetThreadLocalRegionAddress(this->tls_address); */
std::memset(this->tls_heap_address, 0, ams::svc::ThreadLocalRegionSize);
}
/* Set parent, if relevant. */
if (owner != nullptr) {
this->parent = owner;
this->parent->Open();
/* TODO: this->parent->IncrementThreadCount(); */
}
/* Initialize thread context. */
constexpr bool IsDefault64Bit = sizeof(uintptr_t) == sizeof(u64);
const bool is_64_bit = this->parent ? this->parent->Is64Bit() : IsDefault64Bit;
const bool is_user = (type == ThreadType_User);
const bool is_main = (type == ThreadType_Main);
this->thread_context.Initialize(this->entrypoint, reinterpret_cast<uintptr_t>(this->GetStackTop()), GetInteger(user_stack_top), arg, is_user, is_64_bit, is_main);
/* Setup the stack parameters. */
StackParameters &sp = this->GetStackParameters();
if (this->parent != nullptr) {
/* TODO: this->parent->CopySvcPermissionTo(pos.svc_permission); */
}
sp.context = std::addressof(this->thread_context);
sp.disable_count = 1;
this->SetInExceptionHandler();
/* Set thread ID. */
this->thread_id = s_next_thread_id++;
/* We initialized! */
this->initialized = true;
/* Register ourselves with our parent process. */
if (this->parent != nullptr) {
/* TODO: this->parent->RegisterThread(this); */
/* TODO: if (this->parent->IsSuspended()) { this->RequestSuspend(SuspendType_Process); } */
}
return ResultSuccess();
}
void KThread::PostDestroy(uintptr_t arg) {
KProcess *owner = reinterpret_cast<KProcess *>(arg & ~1ul);
const bool resource_limit_release_hint = (arg & 1);
if (owner != nullptr) {
/* TODO: Release from owner resource limit. */
(void)(resource_limit_release_hint);
owner->Close();
} else {
/* TODO: Release from system resource limit. */
}
}
void KThread::Finalize() {
/* TODO */
}
bool KThread::IsSignaled() const {
return this->signaled;
}
void KThread::OnTimer() {
/* TODO */
}
void KThread::DoWorkerTask() {
/* TODO */
}
}

21
libraries/libmesosphere/source/kern_kernel.cpp
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@ -17,7 +17,7 @@
namespace ams::kern {
void Kernel::Initialize(s32 core_id) {
void Kernel::InitializeCoreLocalRegion(s32 core_id) {
/* Construct the core local region object in place. */
KCoreLocalContext *clc = GetPointer<KCoreLocalContext>(KMemoryLayout::GetCoreLocalRegionAddress());
new (clc) KCoreLocalContext;
@ -46,9 +46,22 @@ namespace ams::kern {
}
}
void Kernel::InitializeCoreThreads(s32 core_id) {
/* TODO: This function wants to setup the main thread and the idle thread. */
/* It also wants to initialize the scheduler/interrupt manager/hardware timer. */
void Kernel::InitializeMainAndIdleThreads(s32 core_id) {
/* This function wants to setup the main thread and the idle thread. */
KThread *main_thread = std::addressof(Kernel::GetMainThread(core_id));
void *main_thread_stack = GetVoidPointer(KMemoryLayout::GetMainStackTopAddress(core_id));
KThread *idle_thread = std::addressof(Kernel::GetIdleThread(core_id));
void *idle_thread_stack = GetVoidPointer(KMemoryLayout::GetIdleStackTopAddress(core_id));
KAutoObject::Create(main_thread);
KAutoObject::Create(idle_thread);
main_thread->Initialize(nullptr, 0, main_thread_stack, 0, KThread::MainThreadPriority, core_id, nullptr, KThread::ThreadType_Main);
idle_thread->Initialize(nullptr, 0, idle_thread_stack, 0, KThread::IdleThreadPriority, core_id, nullptr, KThread::ThreadType_Main);
/* Set the current thread to be the main thread, and we have no processes running yet. */
SetCurrentThread(main_thread);
SetCurrentProcess(nullptr);
/* TODO: We also want to initialize the scheduler/interrupt manager/hardware timer. */
}
}

4
libraries/libmesosphere/source/kern_main.cpp
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@ -19,7 +19,7 @@ namespace ams::kern {
NORETURN void HorizonKernelMain(s32 core_id) {
/* Setup the Core Local Region, and note that we're initializing. */
Kernel::Initialize(core_id);
Kernel::InitializeCoreLocalRegion(core_id);
Kernel::SetState(Kernel::State::Initializing);
/* Ensure that all cores get to this point before proceeding. */
@ -29,7 +29,7 @@ namespace ams::kern {
/* Synchronize after each init to ensure the cores go in order. */
for (size_t i = 0; i < cpu::NumCores; i++) {
if (static_cast<s32>(i) == core_id) {
Kernel::InitializeCoreThreads(core_id);
Kernel::InitializeMainAndIdleThreads(core_id);
}
cpu::SynchronizeAllCores();
}

27
libraries/libmesosphere/source/libc/kern_cxx.c Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef __cplusplus
extern "C" {
#endif
void __dso_handle() { /* ... */ }
void __cxa_atexit() { /* ... */ }
#ifdef __cplusplus
} /* extern "C" */
#endif

24
libraries/libmesosphere/source/libc/kern_new.cpp Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mesosphere.hpp>
void operator delete (void *deleted) throw() {
MESOSPHERE_PANIC("operator delete(void *) was called: %p", deleted);
}
void operator delete (void *deleted, size_t size) throw() {
MESOSPHERE_PANIC("operator delete(void *, size_t) was called: %p %zu", deleted, size);
}