diff options
Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 130 |
1 files changed, 113 insertions, 17 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 3afcce3fe..7a053da1e 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(); } } @@ -1025,6 +1098,29 @@ 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 +1256,7 @@ 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"}, |