diff options
| -rw-r--r-- | src/core/hle/service/ldr/ldr.cpp | 121 |
1 files changed, 110 insertions, 11 deletions
diff --git a/src/core/hle/service/ldr/ldr.cpp b/src/core/hle/service/ldr/ldr.cpp index 252c66831..11b8a02e2 100644 --- a/src/core/hle/service/ldr/ldr.cpp +++ b/src/core/hle/service/ldr/ldr.cpp @@ -231,29 +231,128 @@ public: const VAddr bss_addr{rp.Pop<VAddr>()}; const u64 bss_size{rp.Pop<u64>()}; + if (!initialized) { + LOG_ERROR(Service_LDR, "LDR:RO not initialized before use!"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_NOT_INITIALIZED); + return; + } + + if (nro.size() >= MAXIMUM_LOADED_RO) { + LOG_ERROR(Service_LDR, "Loading new NRO would exceed the maximum number of loaded NROs " + "(0x40)! Failing..."); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_MAXIMUM_NRO); + return; + } + + // NRO Address does not fall on 0x1000 byte boundary + if ((nro_addr & 0xFFF) != 0) { + LOG_ERROR(Service_LDR, "NRO Address has invalid alignment (actual {:016X})!", nro_addr); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_INVALID_ALIGNMENT); + return; + } + + // NRO Size or BSS Size is zero or causes overflow + if (nro_addr + nro_size <= nro_addr || nro_size == 0 || (nro_size & 0xFFF) != 0 || + (bss_size != 0 && bss_addr + bss_size <= bss_addr) || + (std::numeric_limits<u64>::max() - nro_size < bss_size)) { + LOG_ERROR(Service_LDR, + "NRO Size or BSS Size is invalid! (nro_address={:016X}, nro_size={:016X}, " + "bss_address={:016X}, bss_size={:016X})", + nro_addr, nro_size, bss_addr, bss_size); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_INVALID_SIZE); + return; + } + // Read NRO data from memory std::vector<u8> nro_data(nro_size); Memory::ReadBlock(nro_addr, nro_data.data(), nro_size); + SHA256Hash hash{}; + mbedtls_sha256(nro_data.data(), nro_data.size(), hash.data(), 0); + + // NRO Hash is already loaded + if (std::find_if(nro.begin(), nro.end(), [&hash](const std::pair<VAddr, NROInfo>& info) { + return info.second.hash == hash; + }) != nro.end()) { + LOG_ERROR(Service_LDR, "NRO is already loaded!"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_ALREADY_LOADED); + return; + } + + // NRO Hash is not in any loaded NRR + if (std::find_if(nrr.begin(), nrr.end(), + [&hash](const std::pair<VAddr, std::vector<SHA256Hash>>& p) { + return std::find(p.second.begin(), p.second.end(), hash) != + p.second.end(); + }) == nrr.end()) { + LOG_ERROR(Service_LDR, + "NRO hash is not present in any currently loaded NRRs (hash={})!", + Common::HexArrayToString(hash)); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_MISSING_NRR_HASH); + return; + } + + NROHeader header; + std::memcpy(&header, nro_data.data(), sizeof(NROHeader)); + + if (header.magic != Common::MakeMagic('N', 'R', 'O', '0') || header.nro_size != nro_size || + header.bss_size != bss_size || + header.ro_offset != header.text_offset + header.text_size || + header.rw_offset != header.ro_offset + header.ro_size || + nro_size != header.rw_offset + header.rw_size || (header.text_size & 0xFFF) != 0 || + (header.ro_size & 0xFFF) != 0 || (header.rw_size & 0xFFF) != 0) { + LOG_ERROR(Service_LDR, "NRO was invalid!"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ERROR_INVALID_NRO); + return; + } + // Load NRO as new executable module - const VAddr addr{*Core::CurrentProcess()->VMManager().FindFreeRegion(nro_size + bss_size)}; - Loader::AppLoader_NRO::LoadNro(nro_data, fmt::format("nro-{:08x}", addr), addr); + auto process = Core::CurrentProcess(); + auto& vm_manager = process->VMManager(); + auto map_address = vm_manager.FindFreeRegion(nro_size + bss_size); + + ASSERT(map_address.Succeeded()); + + ASSERT(process->MirrorMemory(*map_address, nro_addr, nro_size, + Kernel::MemoryState::ModuleCodeStatic) == RESULT_SUCCESS); + ASSERT(process->UnmapMemory(nro_addr, 0, nro_size) == RESULT_SUCCESS); + + if (bss_size > 0) { + ASSERT(process->MirrorMemory(*map_address + nro_size, bss_addr, bss_size, + Kernel::MemoryState::ModuleCodeStatic) == RESULT_SUCCESS); + ASSERT(process->UnmapMemory(bss_addr, 0, bss_size) == RESULT_SUCCESS); + } + + vm_manager.ReprotectRange(*map_address, header.text_size, + Kernel::VMAPermission::ReadExecute); + vm_manager.ReprotectRange(*map_address + header.ro_offset, header.ro_size, + Kernel::VMAPermission::Read); + vm_manager.ReprotectRange(*map_address + header.rw_offset, header.rw_size, + Kernel::VMAPermission::ReadWrite); + + Core::System::GetInstance().ArmInterface(0).ClearInstructionCache(); + Core::System::GetInstance().ArmInterface(1).ClearInstructionCache(); + Core::System::GetInstance().ArmInterface(2).ClearInstructionCache(); + Core::System::GetInstance().ArmInterface(3).ClearInstructionCache(); - // TODO(bunnei): This is an incomplete implementation. It was tested with Super Mario Party. - // It is currently missing: - // - Signature checks with LoadNRR - // - Checking if a module has already been loaded - // - Using/validating BSS, etc. params (these are used from NRO header instead) - // - Error checking - // - ...Probably other things + nro.insert_or_assign(*map_address, NROInfo{hash, nro_size + bss_size}); IPC::ResponseBuilder rb{ctx, 4}; rb.Push(RESULT_SUCCESS); - rb.Push(addr); - LOG_WARNING(Service_LDR, "(STUBBED) called"); + rb.Push(*map_address); + } } void Initialize(Kernel::HLERequestContext& ctx) { + initialized = true; + IPC::ResponseBuilder rb{ctx, 2}; rb.Push(RESULT_SUCCESS); LOG_WARNING(Service_LDR, "(STUBBED) called"); |