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-rw-r--r--src/core/hle/service/ldr/ldr.cpp107
1 files changed, 85 insertions, 22 deletions
diff --git a/src/core/hle/service/ldr/ldr.cpp b/src/core/hle/service/ldr/ldr.cpp
index 11b8a02e2..5f020cbe0 100644
--- a/src/core/hle/service/ldr/ldr.cpp
+++ b/src/core/hle/service/ldr/ldr.cpp
@@ -6,6 +6,7 @@
#include <fmt/format.h>
#include <mbedtls/sha256.h>
+#include "common/alignment.h"
#include "common/hex_util.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/process.h"
@@ -98,7 +99,7 @@ public:
{0, &RelocatableObject::LoadNro, "LoadNro"},
{1, &RelocatableObject::UnloadNro, "UnloadNro"},
{2, &RelocatableObject::LoadNrr, "LoadNrr"},
- {3, nullptr, "UnloadNrr"},
+ {3, &RelocatableObject::UnloadNrr, "UnloadNrr"},
{4, &RelocatableObject::Initialize, "Initialize"},
};
// clang-format on
@@ -128,7 +129,7 @@ public:
}
// NRR Address does not fall on 0x1000 byte boundary
- if ((nrr_addr & 0xFFF) != 0) {
+ if (!Common::Is4KBAligned(nrr_addr)) {
LOG_ERROR(Service_LDR, "NRR Address has invalid alignment (actual {:016X})!", nrr_addr);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ERROR_INVALID_ALIGNMENT);
@@ -136,7 +137,7 @@ public:
}
// NRR Size is zero or causes overflow
- if (nrr_addr + nrr_size <= nrr_addr || nrr_size == 0 || (nrr_size & 0xFFF) != 0) {
+ if (nrr_addr + nrr_size <= nrr_addr || nrr_size == 0 || !Common::Is4KBAligned(nrr_size)) {
LOG_ERROR(Service_LDR, "NRR Size is invalid! (nrr_address={:016X}, nrr_size={:016X})",
nrr_addr, nrr_size);
IPC::ResponseBuilder rb{ctx, 2};
@@ -201,7 +202,7 @@ public:
rp.Skip(2, false);
const auto nrr_addr{rp.Pop<VAddr>()};
- if ((nrr_addr & 0xFFF) != 0) {
+ if (!Common::Is4KBAligned(nrr_addr)) {
LOG_ERROR(Service_LDR, "NRR Address has invalid alignment (actual {:016X})!", nrr_addr);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ERROR_INVALID_ALIGNMENT);
@@ -247,7 +248,7 @@ public:
}
// NRO Address does not fall on 0x1000 byte boundary
- if ((nro_addr & 0xFFF) != 0) {
+ if (!Common::Is4KBAligned(nro_addr)) {
LOG_ERROR(Service_LDR, "NRO Address has invalid alignment (actual {:016X})!", nro_addr);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ERROR_INVALID_ALIGNMENT);
@@ -255,9 +256,12 @@ public:
}
// 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)) {
+ const auto nro_size_valid =
+ nro_size != 0 && nro_addr + nro_size > nro_addr && Common::Is4KBAligned(nro_size);
+ const auto bss_size_valid = std::numeric_limits<u64>::max() - nro_size >= bss_size &&
+ (bss_size == 0 || bss_addr + bss_size > bss_addr);
+
+ if (!nro_size_valid || !bss_size_valid) {
LOG_ERROR(Service_LDR,
"NRO Size or BSS Size is invalid! (nro_address={:016X}, nro_size={:016X}, "
"bss_address={:016X}, bss_size={:016X})",
@@ -275,9 +279,9 @@ public:
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) {
+ if (std::any_of(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);
@@ -285,11 +289,7 @@ public:
}
// 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()) {
+ if (!IsValidNROHash(hash)) {
LOG_ERROR(Service_LDR,
"NRO hash is not present in any currently loaded NRRs (hash={})!",
Common::HexArrayToString(hash));
@@ -301,12 +301,7 @@ public:
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) {
+ if (!IsValidNRO(header, nro_size, bss_size)) {
LOG_ERROR(Service_LDR, "NRO was invalid!");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ERROR_INVALID_NRO);
@@ -314,7 +309,7 @@ public:
}
// Load NRO as new executable module
- auto process = Core::CurrentProcess();
+ auto* process = Core::CurrentProcess();
auto& vm_manager = process->VMManager();
auto map_address = vm_manager.FindFreeRegion(nro_size + bss_size);
@@ -348,6 +343,57 @@ public:
rb.Push(RESULT_SUCCESS);
rb.Push(*map_address);
}
+
+ void UnloadNro(Kernel::HLERequestContext& ctx) {
+ IPC::RequestParser rp{ctx};
+ rp.Skip(2, false);
+ const VAddr mapped_addr{rp.PopRaw<VAddr>()};
+ const VAddr heap_addr{rp.PopRaw<VAddr>()};
+
+ if (!initialized) {
+ LOG_ERROR(Service_LDR, "LDR:RO not initialized before use!");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ERROR_NOT_INITIALIZED);
+ return;
+ }
+
+ if (!Common::Is4KBAligned(mapped_addr) || !Common::Is4KBAligned(heap_addr)) {
+ LOG_ERROR(Service_LDR,
+ "NRO/BSS Address has invalid alignment (actual nro_addr={:016X}, "
+ "bss_addr={:016X})!",
+ mapped_addr, heap_addr);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ERROR_INVALID_ALIGNMENT);
+ return;
+ }
+
+ const auto iter = nro.find(mapped_addr);
+ if (iter == nro.end()) {
+ LOG_ERROR(Service_LDR,
+ "The NRO attempting to unmap was not mapped or has an invalid address "
+ "(actual {:016X})!",
+ mapped_addr);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ERROR_INVALID_NRO_ADDRESS);
+ return;
+ }
+
+ auto* process = Core::CurrentProcess();
+ auto& vm_manager = process->VMManager();
+ const auto& nro_size = iter->second.size;
+
+ ASSERT(process->MirrorMemory(heap_addr, mapped_addr, nro_size,
+ Kernel::MemoryState::ModuleCodeStatic) == RESULT_SUCCESS);
+ ASSERT(process->UnmapMemory(mapped_addr, 0, nro_size) == RESULT_SUCCESS);
+
+ Core::System::GetInstance().ArmInterface(0).ClearInstructionCache();
+ Core::System::GetInstance().ArmInterface(1).ClearInstructionCache();
+ Core::System::GetInstance().ArmInterface(2).ClearInstructionCache();
+ Core::System::GetInstance().ArmInterface(3).ClearInstructionCache();
+
+ nro.erase(iter);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(RESULT_SUCCESS);
}
void Initialize(Kernel::HLERequestContext& ctx) {
@@ -408,6 +454,23 @@ private:
std::map<VAddr, NROInfo> nro;
std::map<VAddr, std::vector<SHA256Hash>> nrr;
+
+ bool IsValidNROHash(const SHA256Hash& hash) {
+ return std::any_of(
+ 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();
+ });
+ }
+
+ static bool IsValidNRO(const NROHeader& header, u64 nro_size, u64 bss_size) {
+ return 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 &&
+ Common::Is4KBAligned(header.text_size) && Common::Is4KBAligned(header.ro_size) &&
+ Common::Is4KBAligned(header.rw_size);
+ }
};
void InstallInterfaces(SM::ServiceManager& sm) {