diff options
| -rw-r--r-- | src/core/hle/kernel/svc.cpp | 58 |
1 files changed, 57 insertions, 1 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index c8b9e8aeb..9d57b6650 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -1590,6 +1590,62 @@ static ResultCode CreateTransferMemory(Handle* handle, VAddr addr, u64 size, u32 return RESULT_SUCCESS; } +static ResultCode MapTransferMemory(Handle handle, VAddr address, u64 size, u32 permission_raw) { + LOG_DEBUG(Kernel_SVC, + "called. handle=0x{:08X}, address=0x{:016X}, size=0x{:016X}, permissions=0x{:08X}", + handle, address, size, permission_raw); + + if (!Common::Is4KBAligned(address)) { + LOG_ERROR(Kernel_SVC, "Transfer memory addresses must be 4KB aligned (size=0x{:016X}).", + address); + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Common::Is4KBAligned(size)) { + LOG_ERROR(Kernel_SVC, + "Transfer memory sizes must be 4KB aligned and not be zero (size=0x{:016X}).", + size); + return ERR_INVALID_SIZE; + } + + if (!IsValidAddressRange(address, size)) { + LOG_ERROR(Kernel_SVC, + "Given address and size overflows the 64-bit range (address=0x{:016X}, " + "size=0x{:016X}).", + address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + const auto permissions = static_cast<MemoryPermission>(permission_raw); + if (permissions != MemoryPermission::None && permissions != MemoryPermission::Read && + permissions != MemoryPermission::ReadWrite) { + LOG_ERROR(Kernel_SVC, "Invalid transfer memory permissions given (permissions=0x{:08X}).", + permission_raw); + return ERR_INVALID_STATE; + } + + const auto& kernel = Core::System::GetInstance().Kernel(); + const auto* const current_process = kernel.CurrentProcess(); + const auto& handle_table = current_process->GetHandleTable(); + + auto transfer_memory = handle_table.Get<TransferMemory>(handle); + if (!transfer_memory) { + LOG_ERROR(Kernel_SVC, "Nonexistent transfer memory handle given (handle=0x{:08X}).", + handle); + return ERR_INVALID_HANDLE; + } + + if (!current_process->VMManager().IsWithinASLRRegion(address, size)) { + LOG_ERROR(Kernel_SVC, + "Given address and size don't fully fit within the ASLR region " + "(address=0x{:016X}, size=0x{:016X}).", + address, size); + return ERR_INVALID_MEMORY_RANGE; + } + + return transfer_memory->MapMemory(address, size, permissions); +} + static ResultCode GetThreadCoreMask(Handle thread_handle, u32* core, u64* mask) { LOG_TRACE(Kernel_SVC, "called, handle=0x{:08X}", thread_handle); @@ -1965,7 +2021,7 @@ static const FunctionDef SVC_Table[] = { {0x4E, nullptr, "ReadWriteRegister"}, {0x4F, nullptr, "SetProcessActivity"}, {0x50, SvcWrap<CreateSharedMemory>, "CreateSharedMemory"}, - {0x51, nullptr, "MapTransferMemory"}, + {0x51, SvcWrap<MapTransferMemory>, "MapTransferMemory"}, {0x52, nullptr, "UnmapTransferMemory"}, {0x53, nullptr, "CreateInterruptEvent"}, {0x54, nullptr, "QueryPhysicalAddress"}, |