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kernel: unlayer CPU interrupt handling

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This commit is contained in:
Liam
2022-07-07 20:06:46 -04:00
parent 591d1f1b09
commit 6523854dd6
13 changed files with 64 additions and 152 deletions
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2
src/core/CMakeLists.txt
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@@ -1,8 +1,6 @@
add_library(core STATIC
arm/arm_interface.h
arm/arm_interface.cpp
arm/cpu_interrupt_handler.cpp
arm/cpu_interrupt_handler.h
arm/dynarmic/arm_dynarmic_32.cpp
arm/dynarmic/arm_dynarmic_32.h
arm/dynarmic/arm_dynarmic_64.cpp

11
src/core/arm/arm_interface.h
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@@ -28,7 +28,6 @@ namespace Core {
class System;
class CPUInterruptHandler;
using CPUInterrupts = std::array<CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>;
using WatchpointArray = std::array<Kernel::DebugWatchpoint, Core::Hardware::NUM_WATCHPOINTS>;
/// Generic ARMv8 CPU interface
@@ -37,10 +36,8 @@ public:
YUZU_NON_COPYABLE(ARM_Interface);
YUZU_NON_MOVEABLE(ARM_Interface);
explicit ARM_Interface(System& system_, CPUInterrupts& interrupt_handlers_,
bool uses_wall_clock_)
: system{system_}, interrupt_handlers{interrupt_handlers_}, uses_wall_clock{
uses_wall_clock_} {}
explicit ARM_Interface(System& system_, bool uses_wall_clock_)
: system{system_}, uses_wall_clock{uses_wall_clock_} {}
virtual ~ARM_Interface() = default;
struct ThreadContext32 {
@@ -182,6 +179,9 @@ public:
/// Signal an interrupt and ask the core to halt as soon as possible.
virtual void SignalInterrupt() = 0;
/// Clear a previous interrupt.
virtual void ClearInterrupt() = 0;
struct BacktraceEntry {
std::string module;
u64 address;
@@ -209,7 +209,6 @@ public:
protected:
/// System context that this ARM interface is running under.
System& system;
CPUInterrupts& interrupt_handlers;
const WatchpointArray* watchpoints;
bool uses_wall_clock;

24
src/core/arm/cpu_interrupt_handler.cpp
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@@ -1,24 +0,0 @@
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/thread.h"
#include "core/arm/cpu_interrupt_handler.h"
namespace Core {
CPUInterruptHandler::CPUInterruptHandler() : interrupt_event{std::make_unique<Common::Event>()} {}
CPUInterruptHandler::~CPUInterruptHandler() = default;
void CPUInterruptHandler::SetInterrupt(bool is_interrupted_) {
if (is_interrupted_) {
interrupt_event->Set();
}
is_interrupted = is_interrupted_;
}
void CPUInterruptHandler::AwaitInterrupt() {
interrupt_event->Wait();
}
} // namespace Core

39
src/core/arm/cpu_interrupt_handler.h
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@@ -1,39 +0,0 @@
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <atomic>
#include <memory>
namespace Common {
class Event;
}
namespace Core {
class CPUInterruptHandler {
public:
CPUInterruptHandler();
~CPUInterruptHandler();
CPUInterruptHandler(const CPUInterruptHandler&) = delete;
CPUInterruptHandler& operator=(const CPUInterruptHandler&) = delete;
CPUInterruptHandler(CPUInterruptHandler&&) = delete;
CPUInterruptHandler& operator=(CPUInterruptHandler&&) = delete;
bool IsInterrupted() const {
return is_interrupted;
}
void SetInterrupt(bool is_interrupted);
void AwaitInterrupt();
private:
std::unique_ptr<Common::Event> interrupt_event;
std::atomic_bool is_interrupted{false};
};
} // namespace Core

13
src/core/arm/dynarmic/arm_dynarmic_32.cpp
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@@ -11,7 +11,6 @@
#include "common/logging/log.h"
#include "common/page_table.h"
#include "common/settings.h"
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/dynarmic/arm_dynarmic_32.h"
#include "core/arm/dynarmic/arm_dynarmic_cp15.h"
#include "core/arm/dynarmic/arm_exclusive_monitor.h"
@@ -311,11 +310,9 @@ void ARM_Dynarmic_32::RewindBreakpointInstruction() {
LoadContext(breakpoint_context);
}
ARM_Dynarmic_32::ARM_Dynarmic_32(System& system_, CPUInterrupts& interrupt_handlers_,
bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_,
std::size_t core_index_)
: ARM_Interface{system_, interrupt_handlers_, uses_wall_clock_},
cb(std::make_unique<DynarmicCallbacks32>(*this)),
ARM_Dynarmic_32::ARM_Dynarmic_32(System& system_, bool uses_wall_clock_,
ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_)
: ARM_Interface{system_, uses_wall_clock_}, cb(std::make_unique<DynarmicCallbacks32>(*this)),
cp15(std::make_shared<DynarmicCP15>(*this)), core_index{core_index_},
exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor_)},
null_jit{MakeJit(nullptr)}, jit{null_jit.get()} {}
@@ -394,6 +391,10 @@ void ARM_Dynarmic_32::SignalInterrupt() {
jit.load()->HaltExecution(break_loop);
}
void ARM_Dynarmic_32::ClearInterrupt() {
jit.load()->ClearHalt(break_loop);
}
void ARM_Dynarmic_32::ClearInstructionCache() {
jit.load()->ClearCache();
}

5
src/core/arm/dynarmic/arm_dynarmic_32.h
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@@ -28,8 +28,8 @@ class System;
class ARM_Dynarmic_32 final : public ARM_Interface {
public:
ARM_Dynarmic_32(System& system_, CPUInterrupts& interrupt_handlers_, bool uses_wall_clock_,
ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_);
ARM_Dynarmic_32(System& system_, bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_,
std::size_t core_index_);
~ARM_Dynarmic_32() override;
void SetPC(u64 pc) override;
@@ -56,6 +56,7 @@ public:
void LoadContext(const ThreadContext64& ctx) override {}
void SignalInterrupt() override;
void ClearInterrupt() override;
void ClearExclusiveState() override;
void ClearInstructionCache() override;

12
src/core/arm/dynarmic/arm_dynarmic_64.cpp
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@@ -10,7 +10,6 @@
#include "common/logging/log.h"
#include "common/page_table.h"
#include "common/settings.h"
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/dynarmic/arm_dynarmic_64.h"
#include "core/arm/dynarmic/arm_exclusive_monitor.h"
#include "core/core.h"
@@ -371,10 +370,9 @@ void ARM_Dynarmic_64::RewindBreakpointInstruction() {
LoadContext(breakpoint_context);
}
ARM_Dynarmic_64::ARM_Dynarmic_64(System& system_, CPUInterrupts& interrupt_handlers_,
bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_,
std::size_t core_index_)
: ARM_Interface{system_, interrupt_handlers_, uses_wall_clock_},
ARM_Dynarmic_64::ARM_Dynarmic_64(System& system_, bool uses_wall_clock_,
ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_)
: ARM_Interface{system_, uses_wall_clock_},
cb(std::make_unique<DynarmicCallbacks64>(*this)), core_index{core_index_},
exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor_)},
null_jit{MakeJit(nullptr, 48)}, jit{null_jit.get()} {}
@@ -461,6 +459,10 @@ void ARM_Dynarmic_64::SignalInterrupt() {
jit.load()->HaltExecution(break_loop);
}
void ARM_Dynarmic_64::ClearInterrupt() {
jit.load()->ClearHalt(break_loop);
}
void ARM_Dynarmic_64::ClearInstructionCache() {
jit.load()->ClearCache();
}

6
src/core/arm/dynarmic/arm_dynarmic_64.h
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@@ -20,14 +20,13 @@ class Memory;
namespace Core {
class DynarmicCallbacks64;
class CPUInterruptHandler;
class DynarmicExclusiveMonitor;
class System;
class ARM_Dynarmic_64 final : public ARM_Interface {
public:
ARM_Dynarmic_64(System& system_, CPUInterrupts& interrupt_handlers_, bool uses_wall_clock_,
ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_);
ARM_Dynarmic_64(System& system_, bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_,
std::size_t core_index_);
~ARM_Dynarmic_64() override;
void SetPC(u64 pc) override;
@@ -50,6 +49,7 @@ public:
void LoadContext(const ThreadContext64& ctx) override;
void SignalInterrupt() override;
void ClearInterrupt() override;
void ClearExclusiveState() override;
void ClearInstructionCache() override;

9
src/core/debugger/debugger.cpp
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@@ -15,6 +15,7 @@
#include "core/debugger/debugger_interface.h"
#include "core/debugger/gdbstub.h"
#include "core/hle/kernel/global_scheduler_context.h"
#include "core/hle/kernel/k_scheduler.h"
template <typename Readable, typename Buffer, typename Callback>
static void AsyncReceiveInto(Readable& r, Buffer& buffer, Callback&& c) {
@@ -230,13 +231,12 @@ private:
}
void PauseEmulation() {
Kernel::KScopedSchedulerLock sl{system.Kernel()};
// Put all threads to sleep on next scheduler round.
for (auto* thread : ThreadList()) {
thread->RequestSuspend(Kernel::SuspendType::Debug);
}
// Signal an interrupt so that scheduler will fire.
system.Kernel().InterruptAllPhysicalCores();
}
void ResumeEmulation(Kernel::KThread* except = nullptr) {
@@ -253,7 +253,8 @@ private:
template <typename Callback>
void MarkResumed(Callback&& cb) {
std::scoped_lock lk{connection_lock};
Kernel::KScopedSchedulerLock sl{system.Kernel()};
std::scoped_lock cl{connection_lock};
stopped = false;
cb();
}

41
src/core/hle/kernel/kernel.cpp
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@@ -17,7 +17,6 @@
#include "common/thread.h"
#include "common/thread_worker.h"
#include "core/arm/arm_interface.h"
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_timing.h"
@@ -82,7 +81,7 @@ struct KernelCore::Impl {
void InitializeCores() {
for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
cores[core_id].Initialize((*current_process).Is64BitProcess());
cores[core_id]->Initialize((*current_process).Is64BitProcess());
system.Memory().SetCurrentPageTable(*current_process, core_id);
}
}
@@ -100,7 +99,9 @@ struct KernelCore::Impl {
next_user_process_id = KProcess::ProcessIDMin;
next_thread_id = 1;
cores.clear();
for (auto& core : cores) {
core = nullptr;
}
global_handle_table->Finalize();
global_handle_table.reset();
@@ -199,7 +200,7 @@ struct KernelCore::Impl {
const s32 core{static_cast<s32>(i)};
schedulers[i] = std::make_unique<Kernel::KScheduler>(system.Kernel());
cores.emplace_back(i, system, *schedulers[i], interrupts);
cores[i] = std::make_unique<Kernel::PhysicalCore>(i, system, *schedulers[i]);
auto* main_thread{Kernel::KThread::Create(system.Kernel())};
main_thread->SetName(fmt::format("MainThread:{}", core));
@@ -761,7 +762,7 @@ struct KernelCore::Impl {
std::unordered_set<KAutoObject*> registered_in_use_objects;
std::unique_ptr<Core::ExclusiveMonitor> exclusive_monitor;
std::vector<Kernel::PhysicalCore> cores;
std::array<std::unique_ptr<Kernel::PhysicalCore>, Core::Hardware::NUM_CPU_CORES> cores;
// Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
std::atomic<u32> next_host_thread_id{Core::Hardware::NUM_CPU_CORES};
@@ -785,7 +786,6 @@ struct KernelCore::Impl {
Common::ThreadWorker service_threads_manager;
std::array<KThread*, Core::Hardware::NUM_CPU_CORES> shutdown_threads;
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
bool is_multicore{};
@@ -874,11 +874,11 @@ const Kernel::KScheduler& KernelCore::Scheduler(std::size_t id) const {
}
Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) {
return impl->cores[id];
return *impl->cores[id];
}
const Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) const {
return impl->cores[id];
return *impl->cores[id];
}
size_t KernelCore::CurrentPhysicalCoreIndex() const {
@@ -890,11 +890,11 @@ size_t KernelCore::CurrentPhysicalCoreIndex() const {
}
Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() {
return impl->cores[CurrentPhysicalCoreIndex()];
return *impl->cores[CurrentPhysicalCoreIndex()];
}
const Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() const {
return impl->cores[CurrentPhysicalCoreIndex()];
return *impl->cores[CurrentPhysicalCoreIndex()];
}
Kernel::KScheduler* KernelCore::CurrentScheduler() {
@@ -906,15 +906,6 @@ Kernel::KScheduler* KernelCore::CurrentScheduler() {
return impl->schedulers[core_id].get();
}
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& KernelCore::Interrupts() {
return impl->interrupts;
}
const std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& KernelCore::Interrupts()
const {
return impl->interrupts;
}
Kernel::TimeManager& KernelCore::TimeManager() {
return impl->time_manager;
}
@@ -939,24 +930,18 @@ const KAutoObjectWithListContainer& KernelCore::ObjectListContainer() const {
return *impl->global_object_list_container;
}
void KernelCore::InterruptAllPhysicalCores() {
for (auto& physical_core : impl->cores) {
physical_core.Interrupt();
}
}
void KernelCore::InvalidateAllInstructionCaches() {
for (auto& physical_core : impl->cores) {
physical_core.ArmInterface().ClearInstructionCache();
physical_core->ArmInterface().ClearInstructionCache();
}
}
void KernelCore::InvalidateCpuInstructionCacheRange(VAddr addr, std::size_t size) {
for (auto& physical_core : impl->cores) {
if (!physical_core.IsInitialized()) {
if (!physical_core->IsInitialized()) {
continue;
}
physical_core.ArmInterface().InvalidateCacheRange(addr, size);
physical_core->ArmInterface().InvalidateCacheRange(addr, size);
}
}

8
src/core/hle/kernel/kernel.h
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@@ -9,14 +9,12 @@
#include <string>
#include <unordered_map>
#include <vector>
#include "core/arm/cpu_interrupt_handler.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/k_slab_heap.h"
#include "core/hle/kernel/svc_common.h"
namespace Core {
class CPUInterruptHandler;
class ExclusiveMonitor;
class System;
} // namespace Core
@@ -183,12 +181,6 @@ public:
const KAutoObjectWithListContainer& ObjectListContainer() const;
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& Interrupts();
const std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& Interrupts() const;
void InterruptAllPhysicalCores();
void InvalidateAllInstructionCaches();
void InvalidateCpuInstructionCacheRange(VAddr addr, std::size_t size);

29
src/core/hle/kernel/physical_core.cpp
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@@ -1,7 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/dynarmic/arm_dynarmic_32.h"
#include "core/arm/dynarmic/arm_dynarmic_64.h"
#include "core/core.h"
@@ -11,16 +10,14 @@
namespace Kernel {
PhysicalCore::PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_,
Core::CPUInterrupts& interrupts_)
: core_index{core_index_}, system{system_}, scheduler{scheduler_},
interrupts{interrupts_}, guard{std::make_unique<std::mutex>()} {
PhysicalCore::PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_)
: core_index{core_index_}, system{system_}, scheduler{scheduler_} {
#ifdef ARCHITECTURE_x86_64
// TODO(bunnei): Initialization relies on a core being available. We may later replace this with
// a 32-bit instance of Dynarmic. This should be abstracted out to a CPU manager.
auto& kernel = system.Kernel();
arm_interface = std::make_unique<Core::ARM_Dynarmic_64>(
system, interrupts, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
system, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
#else
#error Platform not supported yet.
#endif
@@ -34,7 +31,7 @@ void PhysicalCore::Initialize([[maybe_unused]] bool is_64_bit) {
if (!is_64_bit) {
// We already initialized a 64-bit core, replace with a 32-bit one.
arm_interface = std::make_unique<Core::ARM_Dynarmic_32>(
system, interrupts, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
system, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
}
#else
#error Platform not supported yet.
@@ -47,24 +44,26 @@ void PhysicalCore::Run() {
}
void PhysicalCore::Idle() {
interrupts[core_index].AwaitInterrupt();
std::unique_lock lk{guard};
on_interrupt.wait(lk, [this] { return is_interrupted; });
}
bool PhysicalCore::IsInterrupted() const {
return interrupts[core_index].IsInterrupted();
return is_interrupted;
}
void PhysicalCore::Interrupt() {
guard->lock();
interrupts[core_index].SetInterrupt(true);
std::unique_lock lk{guard};
is_interrupted = true;
arm_interface->SignalInterrupt();
guard->unlock();
on_interrupt.notify_all();
}
void PhysicalCore::ClearInterrupt() {
guard->lock();
interrupts[core_index].SetInterrupt(false);
guard->unlock();
std::unique_lock lk{guard};
is_interrupted = false;
arm_interface->ClearInterrupt();
on_interrupt.notify_all();
}
} // namespace Kernel

17
src/core/hle/kernel/physical_core.h
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@@ -14,7 +14,6 @@ class KScheduler;
} // namespace Kernel
namespace Core {
class CPUInterruptHandler;
class ExclusiveMonitor;
class System;
} // namespace Core
@@ -23,15 +22,11 @@ namespace Kernel {
class PhysicalCore {
public:
PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_,
Core::CPUInterrupts& interrupts_);
PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_);
~PhysicalCore();
PhysicalCore(const PhysicalCore&) = delete;
PhysicalCore& operator=(const PhysicalCore&) = delete;
PhysicalCore(PhysicalCore&&) = default;
PhysicalCore& operator=(PhysicalCore&&) = delete;
YUZU_NON_COPYABLE(PhysicalCore);
YUZU_NON_MOVEABLE(PhysicalCore);
/// Initialize the core for the specified parameters.
void Initialize(bool is_64_bit);
@@ -86,9 +81,11 @@ private:
const std::size_t core_index;
Core::System& system;
Kernel::KScheduler& scheduler;
Core::CPUInterrupts& interrupts;
std::unique_ptr<std::mutex> guard;
std::mutex guard;
std::condition_variable on_interrupt;
std::unique_ptr<Core::ARM_Interface> arm_interface;
bool is_interrupted;
};
} // namespace Kernel