diff options
Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
| -rw-r--r-- | src/core/hle/kernel/svc.cpp | 165 |
1 files changed, 124 insertions, 41 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index b488b508d..d08b84bde 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -39,6 +39,73 @@ namespace { constexpr bool Is4KBAligned(VAddr address) { return (address & 0xFFF) == 0; } + +// Checks if address + size is greater than the given address +// This can return false if the size causes an overflow of a 64-bit type +// or if the given size is zero. +constexpr bool IsValidAddressRange(VAddr address, u64 size) { + return address + size > address; +} + +// Checks if a given address range lies within a larger address range. +constexpr bool IsInsideAddressRange(VAddr address, u64 size, VAddr address_range_begin, + VAddr address_range_end) { + const VAddr end_address = address + size - 1; + return address_range_begin <= address && end_address <= address_range_end - 1; +} + +bool IsInsideAddressSpace(const VMManager& vm, VAddr address, u64 size) { + return IsInsideAddressRange(address, size, vm.GetAddressSpaceBaseAddress(), + vm.GetAddressSpaceEndAddress()); +} + +bool IsInsideNewMapRegion(const VMManager& vm, VAddr address, u64 size) { + return IsInsideAddressRange(address, size, vm.GetNewMapRegionBaseAddress(), + vm.GetNewMapRegionEndAddress()); +} + +// Helper function that performs the common sanity checks for svcMapMemory +// and svcUnmapMemory. This is doable, as both functions perform their sanitizing +// in the same order. +ResultCode MapUnmapMemorySanityChecks(const VMManager& vm_manager, VAddr dst_addr, VAddr src_addr, + u64 size) { + if (!Is4KBAligned(dst_addr) || !Is4KBAligned(src_addr)) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Is4KBAligned(size)) { + return ERR_INVALID_SIZE; + } + + if (!IsValidAddressRange(dst_addr, size)) { + return ERR_INVALID_ADDRESS_STATE; + } + + if (!IsValidAddressRange(src_addr, size)) { + return ERR_INVALID_ADDRESS_STATE; + } + + if (!IsInsideAddressSpace(vm_manager, src_addr, size)) { + return ERR_INVALID_ADDRESS_STATE; + } + + if (!IsInsideNewMapRegion(vm_manager, dst_addr, size)) { + return ERR_INVALID_MEMORY_RANGE; + } + + const VAddr dst_end_address = dst_addr + size; + if (dst_end_address > vm_manager.GetHeapRegionBaseAddress() && + vm_manager.GetHeapRegionEndAddress() > dst_addr) { + return ERR_INVALID_MEMORY_RANGE; + } + + if (dst_end_address > vm_manager.GetMapRegionBaseAddress() && + vm_manager.GetMapRegionEndAddress() > dst_addr) { + return ERR_INVALID_MEMORY_RANGE; + } + + return RESULT_SUCCESS; +} } // Anonymous namespace /// Set the process heap to a given Size. It can both extend and shrink the heap. @@ -69,15 +136,15 @@ static ResultCode MapMemory(VAddr dst_addr, VAddr src_addr, u64 size) { LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); - if (!Is4KBAligned(dst_addr) || !Is4KBAligned(src_addr)) { - return ERR_INVALID_ADDRESS; - } + auto* const current_process = Core::CurrentProcess(); + const auto& vm_manager = current_process->VMManager(); - if (size == 0 || !Is4KBAligned(size)) { - return ERR_INVALID_SIZE; + const auto result = MapUnmapMemorySanityChecks(vm_manager, dst_addr, src_addr, size); + if (result != RESULT_SUCCESS) { + return result; } - return Core::CurrentProcess()->MirrorMemory(dst_addr, src_addr, size); + return current_process->MirrorMemory(dst_addr, src_addr, size); } /// Unmaps a region that was previously mapped with svcMapMemory @@ -85,15 +152,15 @@ static ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size) { LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); - if (!Is4KBAligned(dst_addr) || !Is4KBAligned(src_addr)) { - return ERR_INVALID_ADDRESS; - } + auto* const current_process = Core::CurrentProcess(); + const auto& vm_manager = current_process->VMManager(); - if (size == 0 || !Is4KBAligned(size)) { - return ERR_INVALID_SIZE; + const auto result = MapUnmapMemorySanityChecks(vm_manager, dst_addr, src_addr, size); + if (result != RESULT_SUCCESS) { + return result; } - return Core::CurrentProcess()->UnmapMemory(dst_addr, src_addr, size); + return current_process->UnmapMemory(dst_addr, src_addr, size); } /// Connect to an OS service given the port name, returns the handle to the port to out @@ -303,15 +370,15 @@ static ResultCode ArbitrateUnlock(VAddr mutex_addr) { struct BreakReason { union { - u64 raw; - BitField<31, 1, u64> dont_kill_application; + u32 raw; + BitField<31, 1, u32> signal_debugger; }; }; /// Break program execution -static void Break(u64 reason, u64 info1, u64 info2) { +static void Break(u32 reason, u64 info1, u64 info2) { BreakReason break_reason{reason}; - if (break_reason.dont_kill_application) { + if (break_reason.signal_debugger) { LOG_ERROR( Debug_Emulated, "Emulated program broke execution! reason=0x{:016X}, info1=0x{:016X}, info2=0x{:016X}", @@ -322,6 +389,12 @@ static void Break(u64 reason, u64 info1, u64 info2) { "Emulated program broke execution! reason=0x{:016X}, info1=0x{:016X}, info2=0x{:016X}", reason, info1, info2); ASSERT(false); + + Core::CurrentProcess()->PrepareForTermination(); + + // Kill the current thread + GetCurrentThread()->Stop(); + Core::System::GetInstance().PrepareReschedule(); } } @@ -341,7 +414,7 @@ static ResultCode GetInfo(u64* result, u64 info_id, u64 handle, u64 info_sub_id) LOG_TRACE(Kernel_SVC, "called info_id=0x{:X}, info_sub_id=0x{:X}, handle=0x{:08X}", info_id, info_sub_id, handle); - const auto& current_process = Core::CurrentProcess(); + const auto* current_process = Core::CurrentProcess(); const auto& vm_manager = current_process->VMManager(); switch (static_cast<GetInfoType>(info_id)) { @@ -375,25 +448,12 @@ static ResultCode GetInfo(u64* result, u64 info_id, u64 handle, u64 info_sub_id) case GetInfoType::RandomEntropy: *result = 0; break; - case GetInfoType::AddressSpaceBaseAddr: - *result = vm_manager.GetCodeRegionBaseAddress(); + case GetInfoType::ASLRRegionBaseAddr: + *result = vm_manager.GetASLRRegionBaseAddress(); break; - case GetInfoType::AddressSpaceSize: { - const u64 width = vm_manager.GetAddressSpaceWidth(); - - switch (width) { - case 32: - *result = 0xFFE00000; - break; - case 36: - *result = 0xFF8000000; - break; - case 39: - *result = 0x7FF8000000; - break; - } + case GetInfoType::ASLRRegionSize: + *result = vm_manager.GetASLRRegionSize(); break; - } case GetInfoType::NewMapRegionBaseAddr: *result = vm_manager.GetNewMapRegionBaseAddress(); break; @@ -439,7 +499,7 @@ static ResultCode GetThreadContext(VAddr thread_context, Handle handle) { return ERR_INVALID_HANDLE; } - const auto current_process = Core::CurrentProcess(); + const auto* current_process = Core::CurrentProcess(); if (thread->GetOwnerProcess() != current_process) { return ERR_INVALID_HANDLE; } @@ -531,7 +591,7 @@ static ResultCode MapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 s return ERR_INVALID_HANDLE; } - return shared_memory->Map(Core::CurrentProcess().get(), addr, permissions_type, + return shared_memory->Map(Core::CurrentProcess(), addr, permissions_type, MemoryPermission::DontCare); } @@ -550,7 +610,7 @@ static ResultCode UnmapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 auto& kernel = Core::System::GetInstance().Kernel(); auto shared_memory = kernel.HandleTable().Get<SharedMemory>(shared_memory_handle); - return shared_memory->Unmap(Core::CurrentProcess().get(), addr); + return shared_memory->Unmap(Core::CurrentProcess(), addr); } /// Query process memory @@ -588,7 +648,7 @@ static ResultCode QueryMemory(MemoryInfo* memory_info, PageInfo* page_info, VAdd /// Exits the current process static void ExitProcess() { - auto& current_process = Core::CurrentProcess(); + auto* current_process = Core::CurrentProcess(); LOG_INFO(Kernel_SVC, "Process {} exiting", current_process->GetProcessID()); ASSERT_MSG(current_process->GetStatus() == ProcessStatus::Running, @@ -636,7 +696,7 @@ static ResultCode CreateThread(Handle* out_handle, VAddr entry_point, u64 arg, V auto& kernel = Core::System::GetInstance().Kernel(); CASCADE_RESULT(SharedPtr<Thread> thread, Thread::Create(kernel, name, entry_point, priority, arg, processor_id, stack_top, - Core::CurrentProcess())); + *Core::CurrentProcess())); const auto new_guest_handle = kernel.HandleTable().Create(thread); if (new_guest_handle.Failed()) { return new_guest_handle.Code(); @@ -736,7 +796,7 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target std::vector<SharedPtr<Thread>>& waiting_threads, VAddr condvar_addr) { const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); - const auto& thread_list = scheduler->GetThreadList(); + const auto& thread_list = scheduler.GetThreadList(); for (const auto& thread : thread_list) { if (thread->GetCondVarWaitAddress() == condvar_addr) @@ -1025,6 +1085,29 @@ static ResultCode ClearEvent(Handle handle) { return RESULT_SUCCESS; } +static ResultCode GetProcessInfo(u64* out, Handle process_handle, u32 type) { + LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, type=0x{:X}", process_handle, type); + + // This function currently only allows retrieving a process' status. + enum class InfoType { + Status, + }; + + const auto& kernel = Core::System::GetInstance().Kernel(); + const auto process = kernel.HandleTable().Get<Process>(process_handle); + if (!process) { + return ERR_INVALID_HANDLE; + } + + const auto info_type = static_cast<InfoType>(type); + if (info_type != InfoType::Status) { + return ERR_INVALID_ENUM_VALUE; + } + + *out = static_cast<u64>(process->GetStatus()); + return RESULT_SUCCESS; +} + namespace { struct FunctionDef { using Func = void(); @@ -1160,7 +1243,7 @@ static const FunctionDef SVC_Table[] = { {0x79, nullptr, "CreateProcess"}, {0x7A, nullptr, "StartProcess"}, {0x7B, nullptr, "TerminateProcess"}, - {0x7C, nullptr, "GetProcessInfo"}, + {0x7C, SvcWrap<GetProcessInfo>, "GetProcessInfo"}, {0x7D, nullptr, "CreateResourceLimit"}, {0x7E, nullptr, "SetResourceLimitLimitValue"}, {0x7F, nullptr, "CallSecureMonitor"}, |