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authorZach Hilman <zachhilman@gmail.com>2018-10-30 03:12:05 +0100
committerZach Hilman <zachhilman@gmail.com>2018-11-15 18:48:09 +0100
commit056fa43dcdf69d1f9379e888f0c137b264e63709 (patch)
treef22ab3f9e9e6fa125275ba1377753db442b561e8 /src
parentldr_ro: Implement UnloadNrr (command 3) (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/core/hle/service/ldr/ldr.cpp121
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");