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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <mutex>
#include "core/arm/arm_interface.h"
#include "core/arm/nce/guest_context.h"
namespace Core::Memory {
class Memory;
}
namespace Core {
class System;
class ArmNce final : public ArmInterface {
public:
ArmNce(System& system, bool uses_wall_clock, std::size_t core_index);
~ArmNce() override;
void Initialize() override;
Architecture GetArchitecture() const override {
return Architecture::AArch64;
}
HaltReason RunThread(Kernel::KThread* thread) override;
HaltReason StepThread(Kernel::KThread* thread) override;
void GetContext(Kernel::Svc::ThreadContext& ctx) const override;
void SetContext(const Kernel::Svc::ThreadContext& ctx) override;
void SetTpidrroEl0(u64 value) override;
void GetSvcArguments(std::span<uint64_t, 8> args) const override;
void SetSvcArguments(std::span<const uint64_t, 8> args) override;
u32 GetSvcNumber() const override;
void SignalInterrupt(Kernel::KThread* thread) override;
void ClearInstructionCache() override;
void InvalidateCacheRange(u64 addr, std::size_t size) override;
void LockThread(Kernel::KThread* thread) override;
void UnlockThread(Kernel::KThread* thread) override;
protected:
const Kernel::DebugWatchpoint* HaltedWatchpoint() const override {
return nullptr;
}
void RewindBreakpointInstruction() override {}
private:
// Assembly definitions.
static HaltReason ReturnToRunCodeByTrampoline(void* tpidr, GuestContext* ctx,
u64 trampoline_addr);
static HaltReason ReturnToRunCodeByExceptionLevelChange(int tid, void* tpidr);
static void ReturnToRunCodeByExceptionLevelChangeSignalHandler(int sig, void* info,
void* raw_context);
static void BreakFromRunCodeSignalHandler(int sig, void* info, void* raw_context);
static void GuestAlignmentFaultSignalHandler(int sig, void* info, void* raw_context);
static void GuestAccessFaultSignalHandler(int sig, void* info, void* raw_context);
static void LockThreadParameters(void* tpidr);
static void UnlockThreadParameters(void* tpidr);
private:
// C++ implementation functions for assembly definitions.
static void* RestoreGuestContext(void* raw_context);
static void SaveGuestContext(GuestContext* ctx, void* raw_context);
static bool HandleFailedGuestFault(GuestContext* ctx, void* info, void* raw_context);
static bool HandleGuestAlignmentFault(GuestContext* ctx, void* info, void* raw_context);
static bool HandleGuestAccessFault(GuestContext* ctx, void* info, void* raw_context);
static void HandleHostAlignmentFault(int sig, void* info, void* raw_context);
static void HandleHostAccessFault(int sig, void* info, void* raw_context);
public:
Core::System& m_system;
// Members set on initialization.
std::size_t m_core_index{};
pid_t m_thread_id{-1};
// Core context.
GuestContext m_guest_ctx{};
Kernel::KThread* m_running_thread{};
// Stack for signal processing.
std::unique_ptr<u8[]> m_stack{};
};
} // namespace Core
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