service: ldr: Updates for new VMM.
- Includes removing some service impls. that are untested.
This commit is contained in:
bunnei
parent
a8292f6cd9
commit
37b79ebe85
@ -8,14 +8,21 @@
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#include "common/alignment.h"
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#include "common/hex_util.h"
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#include "common/scope_exit.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/errors.h"
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#include "core/hle/kernel/memory/page_table.h"
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#include "core/hle/kernel/memory/system_control.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/service/ldr/ldr.h"
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#include "core/hle/service/service.h"
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#include "core/loader/nro.h"
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#include "core/memory.h"
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namespace Service::LDR {
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constexpr ResultCode ERROR_INSUFFICIENT_ADDRESS_SPACE{ErrorModule::RO, 2};
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constexpr ResultCode ERROR_INVALID_MEMORY_STATE{ErrorModule::Loader, 51};
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constexpr ResultCode ERROR_INVALID_NRO{ErrorModule::Loader, 52};
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constexpr ResultCode ERROR_INVALID_NRR{ErrorModule::Loader, 53};
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@ -29,7 +36,61 @@ constexpr ResultCode ERROR_INVALID_NRO_ADDRESS{ErrorModule::Loader, 84};
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constexpr ResultCode ERROR_INVALID_NRR_ADDRESS{ErrorModule::Loader, 85};
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constexpr ResultCode ERROR_NOT_INITIALIZED{ErrorModule::Loader, 87};
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constexpr u64 MAXIMUM_LOADED_RO = 0x40;
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constexpr std::size_t MAXIMUM_LOADED_RO{0x40};
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constexpr std::size_t MAXIMUM_MAP_RETRIES{0x200};
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struct NRRHeader {
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u32_le magic;
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INSERT_PADDING_BYTES(12);
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u64_le title_id_mask;
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u64_le title_id_pattern;
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INSERT_PADDING_BYTES(16);
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std::array<u8, 0x100> modulus;
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std::array<u8, 0x100> signature_1;
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std::array<u8, 0x100> signature_2;
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u64_le title_id;
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u32_le size;
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INSERT_PADDING_BYTES(4);
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u32_le hash_offset;
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u32_le hash_count;
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INSERT_PADDING_BYTES(8);
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};
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static_assert(sizeof(NRRHeader) == 0x350, "NRRHeader has incorrect size.");
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struct NROHeader {
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INSERT_PADDING_WORDS(1);
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u32_le mod_offset;
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INSERT_PADDING_WORDS(2);
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u32_le magic;
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u32_le version;
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u32_le nro_size;
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u32_le flags;
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u32_le text_offset;
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u32_le text_size;
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u32_le ro_offset;
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u32_le ro_size;
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u32_le rw_offset;
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u32_le rw_size;
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u32_le bss_size;
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INSERT_PADDING_WORDS(1);
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std::array<u8, 0x20> build_id;
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INSERT_PADDING_BYTES(0x20);
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};
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static_assert(sizeof(NROHeader) == 0x80, "NROHeader has invalid size.");
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using SHA256Hash = std::array<u8, 0x20>;
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struct NROInfo {
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SHA256Hash hash{};
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VAddr nro_address{};
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std::size_t nro_size{};
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VAddr bss_address{};
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std::size_t bss_size{};
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std::size_t text_size{};
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std::size_t ro_size{};
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std::size_t data_size{};
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VAddr src_addr{};
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};
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class DebugMonitor final : public ServiceFramework<DebugMonitor> {
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public:
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@ -84,7 +145,7 @@ public:
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{0, &RelocatableObject::LoadNro, "LoadNro"},
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{1, &RelocatableObject::UnloadNro, "UnloadNro"},
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{2, &RelocatableObject::LoadNrr, "LoadNrr"},
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{3, &RelocatableObject::UnloadNrr, "UnloadNrr"},
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{3, nullptr, "UnloadNrr"},
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{4, &RelocatableObject::Initialize, "Initialize"},
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{10, nullptr, "LoadNrrEx"},
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};
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@ -190,46 +251,127 @@ public:
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rb.Push(RESULT_SUCCESS);
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}
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void UnloadNrr(Kernel::HLERequestContext& ctx) {
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if (!initialized) {
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LOG_ERROR(Service_LDR, "LDR:RO not initialized before use!");
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ERROR_NOT_INITIALIZED);
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return;
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bool ValidateRegionForMap(Kernel::Memory::PageTable& page_table, VAddr start,
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std::size_t size) const {
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constexpr std::size_t padding_size{4 * Kernel::Memory::PageSize};
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const auto start_info{page_table.QueryInfo(start - 1)};
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if (start_info.state != Kernel::Memory::MemoryState::Free) {
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return {};
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}
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struct Parameters {
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u64_le process_id;
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u64_le nrr_address;
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};
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IPC::RequestParser rp{ctx};
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const auto [process_id, nrr_address] = rp.PopRaw<Parameters>();
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LOG_DEBUG(Service_LDR, "called with process_id={:016X}, nrr_addr={:016X}", process_id,
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nrr_address);
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if (!Common::Is4KBAligned(nrr_address)) {
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LOG_ERROR(Service_LDR, "NRR Address has invalid alignment (actual {:016X})!",
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nrr_address);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ERROR_INVALID_ALIGNMENT);
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return;
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if (start_info.GetAddress() > (start - padding_size)) {
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return {};
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}
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const auto iter = nrr.find(nrr_address);
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if (iter == nrr.end()) {
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LOG_ERROR(Service_LDR,
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"Attempting to unload NRR which has not been loaded! (addr={:016X})",
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nrr_address);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ERROR_INVALID_NRR_ADDRESS);
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return;
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const auto end_info{page_table.QueryInfo(start + size)};
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if (end_info.state != Kernel::Memory::MemoryState::Free) {
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return {};
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}
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nrr.erase(iter);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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return (start + size + padding_size) <= (end_info.GetAddress() + end_info.GetSize());
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}
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VAddr GetRandomMapRegion(const Kernel::Memory::PageTable& page_table, std::size_t size) const {
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VAddr addr{};
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const std::size_t end_pages{(page_table.GetAliasCodeRegionSize() - size) >>
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Kernel::Memory::PageBits};
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do {
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addr = page_table.GetAliasCodeRegionStart() +
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(Kernel::Memory::SystemControl::GenerateRandomRange(0, end_pages)
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<< Kernel::Memory::PageBits);
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} while (!page_table.IsInsideAddressSpace(addr, size) ||
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page_table.IsInsideHeapRegion(addr, size) ||
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page_table.IsInsideAliasRegion(addr, size));
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return addr;
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}
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ResultVal<VAddr> MapProcessCodeMemory(Kernel::Process* process, VAddr baseAddress,
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u64 size) const {
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for (int retry{}; retry < MAXIMUM_MAP_RETRIES; retry++) {
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auto& page_table{process->PageTable()};
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const VAddr addr{GetRandomMapRegion(page_table, size)};
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const ResultCode result{page_table.MapProcessCodeMemory(addr, baseAddress, size)};
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if (result == Kernel::ERR_INVALID_ADDRESS_STATE) {
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continue;
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}
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if (result.IsError()) {
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return result;
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}
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if (ValidateRegionForMap(page_table, addr, size)) {
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return MakeResult<VAddr>(addr);
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}
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}
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return ERROR_INSUFFICIENT_ADDRESS_SPACE;
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}
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ResultVal<VAddr> MapNro(Kernel::Process* process, VAddr nro_addr, std::size_t nro_size,
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VAddr bss_addr, std::size_t bss_size, std::size_t size) const {
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for (int retry{}; retry < MAXIMUM_MAP_RETRIES; retry++) {
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auto& page_table{process->PageTable()};
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VAddr addr{};
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CASCADE_RESULT(addr, MapProcessCodeMemory(process, nro_addr, nro_size));
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if (bss_size) {
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auto block_guard = detail::ScopeExit([&] {
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page_table.UnmapProcessCodeMemory(addr + nro_size, bss_addr, bss_size);
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page_table.UnmapProcessCodeMemory(addr, nro_addr, nro_size);
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});
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const ResultCode result{
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page_table.MapProcessCodeMemory(addr + nro_size, bss_addr, bss_size)};
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if (result == Kernel::ERR_INVALID_ADDRESS_STATE) {
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continue;
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}
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if (result.IsError()) {
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return result;
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}
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block_guard.Cancel();
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}
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if (ValidateRegionForMap(page_table, addr, size)) {
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return MakeResult<VAddr>(addr);
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}
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}
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return ERROR_INSUFFICIENT_ADDRESS_SPACE;
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}
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ResultCode LoadNro(Kernel::Process* process, const NROHeader& nro_header, VAddr nro_addr,
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VAddr start) const {
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const VAddr text_start{start + nro_header.text_offset};
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const VAddr ro_start{start + nro_header.ro_offset};
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const VAddr data_start{start + nro_header.rw_offset};
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const VAddr bss_start{data_start + nro_header.rw_size};
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const VAddr bss_end_addr{
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Common::AlignUp(bss_start + nro_header.bss_size, Kernel::Memory::PageSize)};
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auto CopyCode{[&](VAddr src_addr, VAddr dst_addr, u64 size) {
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std::vector<u8> source_data(size);
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system.Memory().ReadBlock(src_addr, source_data.data(), source_data.size());
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system.Memory().WriteBlock(dst_addr, source_data.data(), source_data.size());
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}};
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CopyCode(nro_addr + nro_header.text_offset, text_start, nro_header.text_size);
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CopyCode(nro_addr + nro_header.ro_offset, ro_start, nro_header.ro_size);
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CopyCode(nro_addr + nro_header.rw_offset, data_start, nro_header.rw_size);
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CASCADE_CODE(process->PageTable().SetCodeMemoryPermission(
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text_start, ro_start - text_start, Kernel::Memory::MemoryPermission::ReadAndExecute));
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CASCADE_CODE(process->PageTable().SetCodeMemoryPermission(
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ro_start, data_start - ro_start, Kernel::Memory::MemoryPermission::Read));
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return process->PageTable().SetCodeMemoryPermission(
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data_start, bss_end_addr - data_start, Kernel::Memory::MemoryPermission::ReadAndWrite);
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}
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void LoadNro(Kernel::HLERequestContext& ctx) {
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@ -317,9 +459,9 @@ public:
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return;
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}
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NROHeader header;
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// Load and validate the NRO header
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NROHeader header{};
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std::memcpy(&header, nro_data.data(), sizeof(NROHeader));
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if (!IsValidNRO(header, nro_size, bss_size)) {
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LOG_ERROR(Service_LDR, "NRO was invalid!");
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IPC::ResponseBuilder rb{ctx, 2};
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@ -327,62 +469,49 @@ public:
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return;
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}
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// Load NRO as new executable module
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auto* process = system.CurrentProcess();
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auto& vm_manager = process->VMManager();
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auto map_address = vm_manager.FindFreeRegion(nro_size + bss_size);
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if (!map_address.Succeeded() ||
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*map_address + nro_size + bss_size > vm_manager.GetAddressSpaceEndAddress()) {
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LOG_ERROR(Service_LDR,
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"General error while allocation memory or no available memory to allocate!");
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// Map memory for the NRO
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const ResultVal<VAddr> map_result{MapNro(system.CurrentProcess(), nro_address, nro_size,
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bss_address, bss_size, nro_size + bss_size)};
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if (map_result.Failed()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ERROR_INVALID_MEMORY_STATE);
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return;
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rb.Push(map_result.Code());
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}
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// Mark text and read-only region as ModuleCode
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ASSERT(vm_manager
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.MirrorMemory(*map_address, nro_address, header.text_size + header.ro_size,
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Kernel::MemoryState::ModuleCode)
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.IsSuccess());
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// Mark read/write region as ModuleCodeData, which is necessary if this region is used for
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// TransferMemory (e.g. Final Fantasy VIII Remastered does this)
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ASSERT(vm_manager
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.MirrorMemory(*map_address + header.rw_offset, nro_address + header.rw_offset,
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header.rw_size, Kernel::MemoryState::ModuleCodeData)
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.IsSuccess());
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// Revoke permissions from the old memory region
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ASSERT(vm_manager.ReprotectRange(nro_address, nro_size, Kernel::VMAPermission::None)
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.IsSuccess());
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if (bss_size > 0) {
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// Mark BSS region as ModuleCodeData, which is necessary if this region is used for
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// TransferMemory (e.g. Final Fantasy VIII Remastered does this)
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ASSERT(vm_manager
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.MirrorMemory(*map_address + nro_size, bss_address, bss_size,
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Kernel::MemoryState::ModuleCodeData)
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.IsSuccess());
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ASSERT(vm_manager.ReprotectRange(bss_address, bss_size, Kernel::VMAPermission::None)
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.IsSuccess());
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// Load the NRO into the mapped memory
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if (const ResultCode result{
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LoadNro(system.CurrentProcess(), header, nro_address, *map_result)};
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result.IsError()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(map_result.Code());
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}
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vm_manager.ReprotectRange(*map_address, header.text_size,
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Kernel::VMAPermission::ReadExecute);
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vm_manager.ReprotectRange(*map_address + header.ro_offset, header.ro_size,
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Kernel::VMAPermission::Read);
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vm_manager.ReprotectRange(*map_address + header.rw_offset, header.rw_size,
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Kernel::VMAPermission::ReadWrite);
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// Track the loaded NRO
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nro.insert_or_assign(*map_result, NROInfo{hash, *map_result, nro_size, bss_address,
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bss_size, header.text_size, header.ro_size,
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header.rw_size, nro_address});
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// Invalidate JIT caches for the newly mapped process code
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system.InvalidateCpuInstructionCaches();
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nro.insert_or_assign(*map_address,
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NROInfo{hash, nro_address, nro_size, bss_address, bss_size});
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IPC::ResponseBuilder rb{ctx, 4};
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rb.Push(RESULT_SUCCESS);
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rb.Push(*map_address);
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rb.Push(*map_result);
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}
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ResultCode UnmapNro(const NROInfo& info) {
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// Each region must be unmapped separately to validate memory state
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auto& page_table{system.CurrentProcess()->PageTable()};
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CASCADE_CODE(page_table.UnmapProcessCodeMemory(info.nro_address + info.text_size +
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info.ro_size + info.data_size,
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info.bss_address, info.bss_size));
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CASCADE_CODE(page_table.UnmapProcessCodeMemory(
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info.nro_address + info.text_size + info.ro_size,
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info.src_addr + info.text_size + info.ro_size, info.data_size));
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CASCADE_CODE(page_table.UnmapProcessCodeMemory(
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info.nro_address + info.text_size, info.src_addr + info.text_size, info.ro_size));
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CASCADE_CODE(
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page_table.UnmapProcessCodeMemory(info.nro_address, info.src_addr, info.text_size));
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return RESULT_SUCCESS;
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}
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void UnloadNro(Kernel::HLERequestContext& ctx) {
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@ -422,30 +551,15 @@ public:
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return;
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}
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auto& vm_manager = system.CurrentProcess()->VMManager();
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const auto& nro_info = iter->second;
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// Unmap the mirrored memory
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ASSERT(
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vm_manager.UnmapRange(nro_address, nro_info.nro_size + nro_info.bss_size).IsSuccess());
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// Reprotect the source memory
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ASSERT(vm_manager
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.ReprotectRange(nro_info.nro_address, nro_info.nro_size,
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Kernel::VMAPermission::ReadWrite)
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.IsSuccess());
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if (nro_info.bss_size > 0) {
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ASSERT(vm_manager
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.ReprotectRange(nro_info.bss_address, nro_info.bss_size,
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Kernel::VMAPermission::ReadWrite)
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.IsSuccess());
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}
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const ResultCode result{UnmapNro(iter->second)};
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system.InvalidateCpuInstructionCaches();
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nro.erase(iter);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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rb.Push(result);
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}
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void Initialize(Kernel::HLERequestContext& ctx) {
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@ -458,56 +572,7 @@ public:
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}
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private:
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using SHA256Hash = std::array<u8, 0x20>;
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struct NROHeader {
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INSERT_PADDING_WORDS(1);
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u32_le mod_offset;
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INSERT_PADDING_WORDS(2);
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u32_le magic;
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u32_le version;
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u32_le nro_size;
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u32_le flags;
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u32_le text_offset;
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u32_le text_size;
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u32_le ro_offset;
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u32_le ro_size;
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u32_le rw_offset;
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u32_le rw_size;
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u32_le bss_size;
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INSERT_PADDING_WORDS(1);
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std::array<u8, 0x20> build_id;
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INSERT_PADDING_BYTES(0x20);
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};
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static_assert(sizeof(NROHeader) == 0x80, "NROHeader has invalid size.");
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struct NRRHeader {
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u32_le magic;
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INSERT_PADDING_BYTES(12);
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u64_le title_id_mask;
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u64_le title_id_pattern;
|
||||
INSERT_PADDING_BYTES(16);
|
||||
std::array<u8, 0x100> modulus;
|
||||
std::array<u8, 0x100> signature_1;
|
||||
std::array<u8, 0x100> signature_2;
|
||||
u64_le title_id;
|
||||
u32_le size;
|
||||
INSERT_PADDING_BYTES(4);
|
||||
u32_le hash_offset;
|
||||
u32_le hash_count;
|
||||
INSERT_PADDING_BYTES(8);
|
||||
};
|
||||
static_assert(sizeof(NRRHeader) == 0x350, "NRRHeader has incorrect size.");
|
||||
|
||||
struct NROInfo {
|
||||
SHA256Hash hash;
|
||||
VAddr nro_address;
|
||||
u64 nro_size;
|
||||
VAddr bss_address;
|
||||
u64 bss_size;
|
||||
};
|
||||
|
||||
bool initialized = false;
|
||||
bool initialized{};
|
||||
|
||||
std::map<VAddr, NROInfo> nro;
|
||||
std::map<VAddr, std::vector<SHA256Hash>> nrr;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user