diff options
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/CMakeLists.txt | 2 | ||||
-rw-r--r-- | src/core/hle/kernel/address_arbiter.cpp | 173 | ||||
-rw-r--r-- | src/core/hle/kernel/address_arbiter.h | 32 | ||||
-rw-r--r-- | src/core/hle/kernel/errors.h | 12 | ||||
-rw-r--r-- | src/core/hle/kernel/mutex.cpp | 4 | ||||
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 59 | ||||
-rw-r--r-- | src/core/hle/kernel/svc_wrap.h | 14 | ||||
-rw-r--r-- | src/core/hle/kernel/thread.cpp | 6 | ||||
-rw-r--r-- | src/core/hle/kernel/thread.h | 4 | ||||
-rw-r--r-- | src/core/memory.cpp | 4 | ||||
-rw-r--r-- | src/core/memory.h | 7 |
11 files changed, 308 insertions, 9 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index f09edb817..51e4088d2 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -40,6 +40,8 @@ add_library(core STATIC hle/config_mem.h hle/ipc.h hle/ipc_helpers.h + hle/kernel/address_arbiter.cpp + hle/kernel/address_arbiter.h hle/kernel/client_port.cpp hle/kernel/client_port.h hle/kernel/client_session.cpp diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp new file mode 100644 index 000000000..e9c8369d7 --- /dev/null +++ b/src/core/hle/kernel/address_arbiter.cpp @@ -0,0 +1,173 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/assert.h" +#include "common/common_funcs.h" +#include "common/common_types.h" +#include "core/core.h" +#include "core/hle/kernel/errors.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/process.h" +#include "core/hle/kernel/thread.h" +#include "core/hle/lock.h" +#include "core/memory.h" + +namespace Kernel { +namespace AddressArbiter { + +// Performs actual address waiting logic. +static ResultCode WaitForAddress(VAddr address, s64 timeout) { + SharedPtr<Thread> current_thread = GetCurrentThread(); + current_thread->arb_wait_address = address; + current_thread->status = THREADSTATUS_WAIT_ARB; + current_thread->wakeup_callback = nullptr; + + current_thread->WakeAfterDelay(timeout); + + Core::System::GetInstance().CpuCore(current_thread->processor_id).PrepareReschedule(); + return RESULT_TIMEOUT; +} + +// Gets the threads waiting on an address. +static void GetThreadsWaitingOnAddress(std::vector<SharedPtr<Thread>>& waiting_threads, + VAddr address) { + auto RetrieveWaitingThreads = + [](size_t core_index, std::vector<SharedPtr<Thread>>& waiting_threads, VAddr arb_addr) { + const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); + auto& thread_list = scheduler->GetThreadList(); + + for (auto& thread : thread_list) { + if (thread->arb_wait_address == arb_addr) + waiting_threads.push_back(thread); + } + }; + + // Retrieve a list of all threads that are waiting for this address. + RetrieveWaitingThreads(0, waiting_threads, address); + RetrieveWaitingThreads(1, waiting_threads, address); + RetrieveWaitingThreads(2, waiting_threads, address); + RetrieveWaitingThreads(3, waiting_threads, address); + // Sort them by priority, such that the highest priority ones come first. + std::sort(waiting_threads.begin(), waiting_threads.end(), + [](const SharedPtr<Thread>& lhs, const SharedPtr<Thread>& rhs) { + return lhs->current_priority < rhs->current_priority; + }); +} + +// Wake up num_to_wake (or all) threads in a vector. +static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) { + // Only process up to 'target' threads, unless 'target' is <= 0, in which case process + // them all. + size_t last = waiting_threads.size(); + if (num_to_wake > 0) + last = num_to_wake; + + // Signal the waiting threads. + for (size_t i = 0; i < last; i++) { + ASSERT(waiting_threads[i]->status = THREADSTATUS_WAIT_ARB); + waiting_threads[i]->SetWaitSynchronizationResult(RESULT_SUCCESS); + waiting_threads[i]->arb_wait_address = 0; + waiting_threads[i]->ResumeFromWait(); + } +} + +// Signals an address being waited on. +ResultCode SignalToAddress(VAddr address, s32 num_to_wake) { + // Get threads waiting on the address. + std::vector<SharedPtr<Thread>> waiting_threads; + GetThreadsWaitingOnAddress(waiting_threads, address); + + WakeThreads(waiting_threads, num_to_wake); + return RESULT_SUCCESS; +} + +// Signals an address being waited on and increments its value if equal to the value argument. +ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake) { + // Ensure that we can write to the address. + if (!Memory::IsValidVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + + if (static_cast<s32>(Memory::Read32(address)) == value) { + Memory::Write32(address, static_cast<u32>(value + 1)); + } else { + return ERR_INVALID_STATE; + } + + return SignalToAddress(address, num_to_wake); +} + +// Signals an address being waited on and modifies its value based on waiting thread count if equal +// to the value argument. +ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, + s32 num_to_wake) { + // Ensure that we can write to the address. + if (!Memory::IsValidVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + + // Get threads waiting on the address. + std::vector<SharedPtr<Thread>> waiting_threads; + GetThreadsWaitingOnAddress(waiting_threads, address); + + // Determine the modified value depending on the waiting count. + s32 updated_value; + if (waiting_threads.size() == 0) { + updated_value = value - 1; + } else if (num_to_wake <= 0 || waiting_threads.size() <= num_to_wake) { + updated_value = value + 1; + } else { + updated_value = value; + } + + if (static_cast<s32>(Memory::Read32(address)) == value) { + Memory::Write32(address, static_cast<u32>(updated_value)); + } else { + return ERR_INVALID_STATE; + } + + WakeThreads(waiting_threads, num_to_wake); + return RESULT_SUCCESS; +} + +// Waits on an address if the value passed is less than the argument value, optionally decrementing. +ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement) { + // Ensure that we can read the address. + if (!Memory::IsValidVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + + s32 cur_value = static_cast<s32>(Memory::Read32(address)); + if (cur_value < value) { + Memory::Write32(address, static_cast<u32>(cur_value - 1)); + } else { + return ERR_INVALID_STATE; + } + // Short-circuit without rescheduling, if timeout is zero. + if (timeout == 0) { + return RESULT_TIMEOUT; + } + + return WaitForAddress(address, timeout); +} + +// Waits on an address if the value passed is equal to the argument value. +ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) { + // Ensure that we can read the address. + if (!Memory::IsValidVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + // Only wait for the address if equal. + if (static_cast<s32>(Memory::Read32(address)) != value) { + return ERR_INVALID_STATE; + } + // Short-circuit without rescheduling, if timeout is zero. + if (timeout == 0) { + return RESULT_TIMEOUT; + } + + return WaitForAddress(address, timeout); +} +} // namespace AddressArbiter +} // namespace Kernel diff --git a/src/core/hle/kernel/address_arbiter.h b/src/core/hle/kernel/address_arbiter.h new file mode 100644 index 000000000..f20f3dbc0 --- /dev/null +++ b/src/core/hle/kernel/address_arbiter.h @@ -0,0 +1,32 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "core/hle/result.h" + +namespace Kernel { + +namespace AddressArbiter { +enum class ArbitrationType { + WaitIfLessThan = 0, + DecrementAndWaitIfLessThan = 1, + WaitIfEqual = 2, +}; + +enum class SignalType { + Signal = 0, + IncrementAndSignalIfEqual = 1, + ModifyByWaitingCountAndSignalIfEqual = 2, +}; + +ResultCode SignalToAddress(VAddr address, s32 num_to_wake); +ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake); +ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake); + +ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement); +ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout); +} // namespace AddressArbiter + +} // namespace Kernel diff --git a/src/core/hle/kernel/errors.h b/src/core/hle/kernel/errors.h index e1b5430bf..221cb1bb5 100644 --- a/src/core/hle/kernel/errors.h +++ b/src/core/hle/kernel/errors.h @@ -20,13 +20,16 @@ enum { MaxConnectionsReached = 52, // Confirmed Switch OS error codes - MisalignedAddress = 102, + InvalidAddress = 102, + InvalidMemoryState = 106, InvalidProcessorId = 113, InvalidHandle = 114, InvalidCombination = 116, Timeout = 117, SynchronizationCanceled = 118, TooLarge = 119, + InvalidEnumValue = 120, + InvalidState = 125, }; } @@ -39,14 +42,15 @@ constexpr ResultCode ERR_SESSION_CLOSED_BY_REMOTE(-1); constexpr ResultCode ERR_PORT_NAME_TOO_LONG(-1); constexpr ResultCode ERR_WRONG_PERMISSION(-1); constexpr ResultCode ERR_MAX_CONNECTIONS_REACHED(-1); -constexpr ResultCode ERR_INVALID_ENUM_VALUE(-1); +constexpr ResultCode ERR_INVALID_ENUM_VALUE(ErrorModule::Kernel, ErrCodes::InvalidEnumValue); constexpr ResultCode ERR_INVALID_ENUM_VALUE_FND(-1); constexpr ResultCode ERR_INVALID_COMBINATION(-1); constexpr ResultCode ERR_INVALID_COMBINATION_KERNEL(-1); constexpr ResultCode ERR_OUT_OF_MEMORY(-1); -constexpr ResultCode ERR_INVALID_ADDRESS(-1); -constexpr ResultCode ERR_INVALID_ADDRESS_STATE(-1); +constexpr ResultCode ERR_INVALID_ADDRESS(ErrorModule::Kernel, ErrCodes::InvalidAddress); +constexpr ResultCode ERR_INVALID_ADDRESS_STATE(ErrorModule::Kernel, ErrCodes::InvalidMemoryState); constexpr ResultCode ERR_INVALID_HANDLE(ErrorModule::Kernel, ErrCodes::InvalidHandle); +constexpr ResultCode ERR_INVALID_STATE(ErrorModule::Kernel, ErrCodes::InvalidState); constexpr ResultCode ERR_INVALID_POINTER(-1); constexpr ResultCode ERR_INVALID_OBJECT_ADDR(-1); constexpr ResultCode ERR_NOT_AUTHORIZED(-1); diff --git a/src/core/hle/kernel/mutex.cpp b/src/core/hle/kernel/mutex.cpp index bc144f3de..65560226d 100644 --- a/src/core/hle/kernel/mutex.cpp +++ b/src/core/hle/kernel/mutex.cpp @@ -59,7 +59,7 @@ ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle, Handle requesting_thread_handle) { // The mutex address must be 4-byte aligned if ((address % sizeof(u32)) != 0) { - return ResultCode(ErrorModule::Kernel, ErrCodes::MisalignedAddress); + return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidAddress); } SharedPtr<Thread> holding_thread = g_handle_table.Get<Thread>(holding_thread_handle); @@ -97,7 +97,7 @@ ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle, ResultCode Mutex::Release(VAddr address) { // The mutex address must be 4-byte aligned if ((address % sizeof(u32)) != 0) { - return ResultCode(ErrorModule::Kernel, ErrCodes::MisalignedAddress); + return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidAddress); } auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(GetCurrentThread(), address); diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 69ba7b777..1a36e0d02 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -11,6 +11,7 @@ #include "common/string_util.h" #include "core/core.h" #include "core/core_timing.h" +#include "core/hle/kernel/address_arbiter.h" #include "core/hle/kernel/client_port.h" #include "core/hle/kernel/client_session.h" #include "core/hle/kernel/event.h" @@ -580,7 +581,7 @@ static void SleepThread(s64 nanoseconds) { Core::System::GetInstance().PrepareReschedule(); } -/// Signal process wide key atomic +/// Wait process wide key atomic static ResultCode WaitProcessWideKeyAtomic(VAddr mutex_addr, VAddr condition_variable_addr, Handle thread_handle, s64 nano_seconds) { NGLOG_TRACE( @@ -689,6 +690,58 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target return RESULT_SUCCESS; } +// Wait for an address (via Address Arbiter) +static ResultCode WaitForAddress(VAddr address, u32 type, s32 value, s64 timeout) { + NGLOG_WARNING(Kernel_SVC, "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, timeout={}", + address, type, value, timeout); + // If the passed address is a kernel virtual address, return invalid memory state. + if (Memory::IsKernelVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + // If the address is not properly aligned to 4 bytes, return invalid address. + if (address % sizeof(u32) != 0) { + return ERR_INVALID_ADDRESS; + } + + switch (static_cast<AddressArbiter::ArbitrationType>(type)) { + case AddressArbiter::ArbitrationType::WaitIfLessThan: + return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, false); + case AddressArbiter::ArbitrationType::DecrementAndWaitIfLessThan: + return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, true); + case AddressArbiter::ArbitrationType::WaitIfEqual: + return AddressArbiter::WaitForAddressIfEqual(address, value, timeout); + default: + return ERR_INVALID_ENUM_VALUE; + } +} + +// Signals to an address (via Address Arbiter) +static ResultCode SignalToAddress(VAddr address, u32 type, s32 value, s32 num_to_wake) { + NGLOG_WARNING(Kernel_SVC, + "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, num_to_wake=0x{:X}", address, + type, value, num_to_wake); + // If the passed address is a kernel virtual address, return invalid memory state. + if (Memory::IsKernelVirtualAddress(address)) { + return ERR_INVALID_ADDRESS_STATE; + } + // If the address is not properly aligned to 4 bytes, return invalid address. + if (address % sizeof(u32) != 0) { + return ERR_INVALID_ADDRESS; + } + + switch (static_cast<AddressArbiter::SignalType>(type)) { + case AddressArbiter::SignalType::Signal: + return AddressArbiter::SignalToAddress(address, num_to_wake); + case AddressArbiter::SignalType::IncrementAndSignalIfEqual: + return AddressArbiter::IncrementAndSignalToAddressIfEqual(address, value, num_to_wake); + case AddressArbiter::SignalType::ModifyByWaitingCountAndSignalIfEqual: + return AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(address, value, + num_to_wake); + default: + return ERR_INVALID_ENUM_VALUE; + } +} + /// This returns the total CPU ticks elapsed since the CPU was powered-on static u64 GetSystemTick() { const u64 result{CoreTiming::GetTicks()}; @@ -861,8 +914,8 @@ static const FunctionDef SVC_Table[] = { {0x31, nullptr, "GetResourceLimitCurrentValue"}, {0x32, SvcWrap<SetThreadActivity>, "SetThreadActivity"}, {0x33, SvcWrap<GetThreadContext>, "GetThreadContext"}, - {0x34, nullptr, "WaitForAddress"}, - {0x35, nullptr, "SignalToAddress"}, + {0x34, SvcWrap<WaitForAddress>, "WaitForAddress"}, + {0x35, SvcWrap<SignalToAddress>, "SignalToAddress"}, {0x36, nullptr, "Unknown"}, {0x37, nullptr, "Unknown"}, {0x38, nullptr, "Unknown"}, diff --git a/src/core/hle/kernel/svc_wrap.h b/src/core/hle/kernel/svc_wrap.h index 40aa88cc1..79c3fe31b 100644 --- a/src/core/hle/kernel/svc_wrap.h +++ b/src/core/hle/kernel/svc_wrap.h @@ -179,6 +179,20 @@ void SvcWrap() { FuncReturn(retval); } +template <ResultCode func(u64, u32, s32, s64)> +void SvcWrap() { + FuncReturn( + func(PARAM(0), (u32)(PARAM(1) & 0xFFFFFFFF), (s32)(PARAM(2) & 0xFFFFFFFF), (s64)PARAM(3)) + .raw); +} + +template <ResultCode func(u64, u32, s32, s32)> +void SvcWrap() { + FuncReturn(func(PARAM(0), (u32)(PARAM(1) & 0xFFFFFFFF), (s32)(PARAM(2) & 0xFFFFFFFF), + (s32)(PARAM(3) & 0xFFFFFFFF)) + .raw); +} + //////////////////////////////////////////////////////////////////////////////////////////////////// // Function wrappers that return type u32 diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp index cffa7ca83..2f333ec34 100644 --- a/src/core/hle/kernel/thread.cpp +++ b/src/core/hle/kernel/thread.cpp @@ -140,6 +140,11 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) { } } + if (thread->arb_wait_address != 0) { + ASSERT(thread->status == THREADSTATUS_WAIT_ARB); + thread->arb_wait_address = 0; + } + if (resume) thread->ResumeFromWait(); } @@ -179,6 +184,7 @@ void Thread::ResumeFromWait() { case THREADSTATUS_WAIT_SLEEP: case THREADSTATUS_WAIT_IPC: case THREADSTATUS_WAIT_MUTEX: + case THREADSTATUS_WAIT_ARB: break; case THREADSTATUS_READY: diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h index 1d2da6d50..f1e759802 100644 --- a/src/core/hle/kernel/thread.h +++ b/src/core/hle/kernel/thread.h @@ -45,6 +45,7 @@ enum ThreadStatus { THREADSTATUS_WAIT_SYNCH_ANY, ///< Waiting due to WaitSynch1 or WaitSynchN with wait_all = false THREADSTATUS_WAIT_SYNCH_ALL, ///< Waiting due to WaitSynchronizationN with wait_all = true THREADSTATUS_WAIT_MUTEX, ///< Waiting due to an ArbitrateLock/WaitProcessWideKey svc + THREADSTATUS_WAIT_ARB, ///< Waiting due to a SignalToAddress/WaitForAddress svc THREADSTATUS_DORMANT, ///< Created but not yet made ready THREADSTATUS_DEAD ///< Run to completion, or forcefully terminated }; @@ -230,6 +231,9 @@ public: VAddr mutex_wait_address; ///< If waiting on a Mutex, this is the mutex address Handle wait_handle; ///< The handle used to wait for the mutex. + // If waiting for an AddressArbiter, this is the address being waited on. + VAddr arb_wait_address{0}; + std::string name; /// Handle used by guest emulated application to access this thread diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 3b81acd63..f070dee7d 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -241,6 +241,10 @@ bool IsValidVirtualAddress(const VAddr vaddr) { return IsValidVirtualAddress(*Core::CurrentProcess(), vaddr); } +bool IsKernelVirtualAddress(const VAddr vaddr) { + return KERNEL_REGION_VADDR <= vaddr && vaddr < KERNEL_REGION_END; +} + bool IsValidPhysicalAddress(const PAddr paddr) { return GetPhysicalPointer(paddr) != nullptr; } diff --git a/src/core/memory.h b/src/core/memory.h index 3f56a2c6a..8d5d017a4 100644 --- a/src/core/memory.h +++ b/src/core/memory.h @@ -188,6 +188,11 @@ enum : VAddr { MAP_REGION_VADDR = NEW_MAP_REGION_VADDR_END, MAP_REGION_SIZE = 0x1000000000, MAP_REGION_VADDR_END = MAP_REGION_VADDR + MAP_REGION_SIZE, + + /// Kernel Virtual Address Range + KERNEL_REGION_VADDR = 0xFFFFFF8000000000, + KERNEL_REGION_SIZE = 0x7FFFE00000, + KERNEL_REGION_END = KERNEL_REGION_VADDR + KERNEL_REGION_SIZE, }; /// Currently active page table @@ -197,6 +202,8 @@ PageTable* GetCurrentPageTable(); /// Determines if the given VAddr is valid for the specified process. bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr); bool IsValidVirtualAddress(const VAddr addr); +/// Determines if the given VAddr is a kernel address +bool IsKernelVirtualAddress(const VAddr addr); bool IsValidPhysicalAddress(const PAddr addr); |