diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/process.cpp | 45 | ||||
-rw-r--r-- | src/core/hle/kernel/process.h | 45 | ||||
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 158 | ||||
-rw-r--r-- | src/core/hle/kernel/svc_wrap.h | 5 | ||||
-rw-r--r-- | src/core/hle/kernel/vm_manager.cpp | 355 | ||||
-rw-r--r-- | src/core/hle/kernel/vm_manager.h | 68 |
6 files changed, 560 insertions, 116 deletions
diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp index f45ef05f6..92169a97b 100644 --- a/src/core/hle/kernel/process.cpp +++ b/src/core/hle/kernel/process.cpp @@ -129,20 +129,17 @@ u64 Process::GetTotalPhysicalMemoryAvailable() const { return vm_manager.GetTotalPhysicalMemoryAvailable(); } -u64 Process::GetTotalPhysicalMemoryAvailableWithoutMmHeap() const { - // TODO: Subtract the personal heap size from this when the - // personal heap is implemented. - return GetTotalPhysicalMemoryAvailable(); +u64 Process::GetTotalPhysicalMemoryAvailableWithoutSystemResource() const { + return GetTotalPhysicalMemoryAvailable() - GetSystemResourceSize(); } u64 Process::GetTotalPhysicalMemoryUsed() const { - return vm_manager.GetCurrentHeapSize() + main_thread_stack_size + code_memory_size; + return vm_manager.GetCurrentHeapSize() + main_thread_stack_size + code_memory_size + + GetSystemResourceUsage(); } -u64 Process::GetTotalPhysicalMemoryUsedWithoutMmHeap() const { - // TODO: Subtract the personal heap size from this when the - // personal heap is implemented. - return GetTotalPhysicalMemoryUsed(); +u64 Process::GetTotalPhysicalMemoryUsedWithoutSystemResource() const { + return GetTotalPhysicalMemoryUsed() - GetSystemResourceUsage(); } void Process::RegisterThread(const Thread* thread) { @@ -172,6 +169,7 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) { program_id = metadata.GetTitleID(); ideal_core = metadata.GetMainThreadCore(); is_64bit_process = metadata.Is64BitProgram(); + system_resource_size = metadata.GetSystemResourceSize(); vm_manager.Reset(metadata.GetAddressSpaceType()); @@ -186,19 +184,11 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) { } void Process::Run(s32 main_thread_priority, u64 stack_size) { - // The kernel always ensures that the given stack size is page aligned. - main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE); - - // Allocate and map the main thread stack - // TODO(bunnei): This is heap area that should be allocated by the kernel and not mapped as part - // of the user address space. - const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size; - vm_manager - .MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size), - 0, main_thread_stack_size, MemoryState::Stack) - .Unwrap(); + AllocateMainThreadStack(stack_size); + tls_region_address = CreateTLSRegion(); vm_manager.LogLayout(); + ChangeStatus(ProcessStatus::Running); SetupMainThread(*this, kernel, main_thread_priority); @@ -228,6 +218,9 @@ void Process::PrepareForTermination() { stop_threads(system.Scheduler(2).GetThreadList()); stop_threads(system.Scheduler(3).GetThreadList()); + FreeTLSRegion(tls_region_address); + tls_region_address = 0; + ChangeStatus(ProcessStatus::Exited); } @@ -327,4 +320,16 @@ void Process::ChangeStatus(ProcessStatus new_status) { WakeupAllWaitingThreads(); } +void Process::AllocateMainThreadStack(u64 stack_size) { + // The kernel always ensures that the given stack size is page aligned. + main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE); + + // Allocate and map the main thread stack + const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size; + vm_manager + .MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size), + 0, main_thread_stack_size, MemoryState::Stack) + .Unwrap(); +} + } // namespace Kernel diff --git a/src/core/hle/kernel/process.h b/src/core/hle/kernel/process.h index 83ea02bee..c2df451f3 100644 --- a/src/core/hle/kernel/process.h +++ b/src/core/hle/kernel/process.h @@ -135,6 +135,11 @@ public: return mutex; } + /// Gets the address to the process' dedicated TLS region. + VAddr GetTLSRegionAddress() const { + return tls_region_address; + } + /// Gets the current status of the process ProcessStatus GetStatus() const { return status; @@ -168,8 +173,24 @@ public: return capabilities.GetPriorityMask(); } - u32 IsVirtualMemoryEnabled() const { - return is_virtual_address_memory_enabled; + /// Gets the amount of secure memory to allocate for memory management. + u32 GetSystemResourceSize() const { + return system_resource_size; + } + + /// Gets the amount of secure memory currently in use for memory management. + u32 GetSystemResourceUsage() const { + // On hardware, this returns the amount of system resource memory that has + // been used by the kernel. This is problematic for Yuzu to emulate, because + // system resource memory is used for page tables -- and yuzu doesn't really + // have a way to calculate how much memory is required for page tables for + // the current process at any given time. + // TODO: Is this even worth implementing? Games may retrieve this value via + // an SDK function that gets used + available system resource size for debug + // or diagnostic purposes. However, it seems unlikely that a game would make + // decisions based on how much system memory is dedicated to its page tables. + // Is returning a value other than zero wise? + return 0; } /// Whether this process is an AArch64 or AArch32 process. @@ -196,15 +217,15 @@ public: u64 GetTotalPhysicalMemoryAvailable() const; /// Retrieves the total physical memory available to this process in bytes, - /// without the size of the personal heap added to it. - u64 GetTotalPhysicalMemoryAvailableWithoutMmHeap() const; + /// without the size of the personal system resource heap added to it. + u64 GetTotalPhysicalMemoryAvailableWithoutSystemResource() const; /// Retrieves the total physical memory used by this process in bytes. u64 GetTotalPhysicalMemoryUsed() const; /// Retrieves the total physical memory used by this process in bytes, - /// without the size of the personal heap added to it. - u64 GetTotalPhysicalMemoryUsedWithoutMmHeap() const; + /// without the size of the personal system resource heap added to it. + u64 GetTotalPhysicalMemoryUsedWithoutSystemResource() const; /// Gets the list of all threads created with this process as their owner. const std::list<const Thread*>& GetThreadList() const { @@ -280,6 +301,9 @@ private: /// a process signal. void ChangeStatus(ProcessStatus new_status); + /// Allocates the main thread stack for the process, given the stack size in bytes. + void AllocateMainThreadStack(u64 stack_size); + /// Memory manager for this process. Kernel::VMManager vm_manager; @@ -298,12 +322,16 @@ private: /// Title ID corresponding to the process u64 program_id = 0; + /// Specifies additional memory to be reserved for the process's memory management by the + /// system. When this is non-zero, secure memory is allocated and used for page table allocation + /// instead of using the normal global page tables/memory block management. + u32 system_resource_size = 0; + /// Resource limit descriptor for this process SharedPtr<ResourceLimit> resource_limit; /// The ideal CPU core for this process, threads are scheduled on this core by default. u8 ideal_core = 0; - u32 is_virtual_address_memory_enabled = 0; /// The Thread Local Storage area is allocated as processes create threads, /// each TLS area is 0x200 bytes, so one page (0x1000) is split up in 8 parts, and each part @@ -338,6 +366,9 @@ private: /// variable related facilities. Mutex mutex; + /// Address indicating the location of the process' dedicated TLS region. + VAddr tls_region_address = 0; + /// Random values for svcGetInfo RandomEntropy std::array<u64, RANDOM_ENTROPY_SIZE> random_entropy{}; diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index de6363ff2..1fd1a732a 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -98,9 +98,9 @@ ResultCode MapUnmapMemorySanityChecks(const VMManager& vm_manager, VAddr dst_add return ERR_INVALID_ADDRESS_STATE; } - if (!vm_manager.IsWithinNewMapRegion(dst_addr, size)) { + if (!vm_manager.IsWithinStackRegion(dst_addr, size)) { LOG_ERROR(Kernel_SVC, - "Destination is not within the new map region, addr=0x{:016X}, size=0x{:016X}", + "Destination is not within the stack region, addr=0x{:016X}, size=0x{:016X}", dst_addr, size); return ERR_INVALID_MEMORY_RANGE; } @@ -318,7 +318,14 @@ static ResultCode UnmapMemory(Core::System& system, VAddr dst_addr, VAddr src_ad return result; } - return vm_manager.UnmapRange(dst_addr, size); + const auto unmap_res = vm_manager.UnmapRange(dst_addr, size); + + // Reprotect the source mapping on success + if (unmap_res.IsSuccess()) { + ASSERT(vm_manager.ReprotectRange(src_addr, size, VMAPermission::ReadWrite).IsSuccess()); + } + + return unmap_res; } /// Connect to an OS service given the port name, returns the handle to the port to out @@ -726,19 +733,19 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha // 2.0.0+ ASLRRegionBaseAddr = 12, ASLRRegionSize = 13, - NewMapRegionBaseAddr = 14, - NewMapRegionSize = 15, + StackRegionBaseAddr = 14, + StackRegionSize = 15, // 3.0.0+ - IsVirtualAddressMemoryEnabled = 16, - PersonalMmHeapUsage = 17, + SystemResourceSize = 16, + SystemResourceUsage = 17, TitleId = 18, // 4.0.0+ PrivilegedProcessId = 19, // 5.0.0+ UserExceptionContextAddr = 20, // 6.0.0+ - TotalPhysicalMemoryAvailableWithoutMmHeap = 21, - TotalPhysicalMemoryUsedWithoutMmHeap = 22, + TotalPhysicalMemoryAvailableWithoutSystemResource = 21, + TotalPhysicalMemoryUsedWithoutSystemResource = 22, }; const auto info_id_type = static_cast<GetInfoType>(info_id); @@ -752,16 +759,16 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha case GetInfoType::HeapRegionSize: case GetInfoType::ASLRRegionBaseAddr: case GetInfoType::ASLRRegionSize: - case GetInfoType::NewMapRegionBaseAddr: - case GetInfoType::NewMapRegionSize: + case GetInfoType::StackRegionBaseAddr: + case GetInfoType::StackRegionSize: case GetInfoType::TotalPhysicalMemoryAvailable: case GetInfoType::TotalPhysicalMemoryUsed: - case GetInfoType::IsVirtualAddressMemoryEnabled: - case GetInfoType::PersonalMmHeapUsage: + case GetInfoType::SystemResourceSize: + case GetInfoType::SystemResourceUsage: case GetInfoType::TitleId: case GetInfoType::UserExceptionContextAddr: - case GetInfoType::TotalPhysicalMemoryAvailableWithoutMmHeap: - case GetInfoType::TotalPhysicalMemoryUsedWithoutMmHeap: { + case GetInfoType::TotalPhysicalMemoryAvailableWithoutSystemResource: + case GetInfoType::TotalPhysicalMemoryUsedWithoutSystemResource: { if (info_sub_id != 0) { return ERR_INVALID_ENUM_VALUE; } @@ -806,12 +813,12 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha *result = process->VMManager().GetASLRRegionSize(); return RESULT_SUCCESS; - case GetInfoType::NewMapRegionBaseAddr: - *result = process->VMManager().GetNewMapRegionBaseAddress(); + case GetInfoType::StackRegionBaseAddr: + *result = process->VMManager().GetStackRegionBaseAddress(); return RESULT_SUCCESS; - case GetInfoType::NewMapRegionSize: - *result = process->VMManager().GetNewMapRegionSize(); + case GetInfoType::StackRegionSize: + *result = process->VMManager().GetStackRegionSize(); return RESULT_SUCCESS; case GetInfoType::TotalPhysicalMemoryAvailable: @@ -822,8 +829,13 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha *result = process->GetTotalPhysicalMemoryUsed(); return RESULT_SUCCESS; - case GetInfoType::IsVirtualAddressMemoryEnabled: - *result = process->IsVirtualMemoryEnabled(); + case GetInfoType::SystemResourceSize: + *result = process->GetSystemResourceSize(); + return RESULT_SUCCESS; + + case GetInfoType::SystemResourceUsage: + LOG_WARNING(Kernel_SVC, "(STUBBED) Attempted to query system resource usage"); + *result = process->GetSystemResourceUsage(); return RESULT_SUCCESS; case GetInfoType::TitleId: @@ -831,17 +843,15 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha return RESULT_SUCCESS; case GetInfoType::UserExceptionContextAddr: - LOG_WARNING(Kernel_SVC, - "(STUBBED) Attempted to query user exception context address, returned 0"); - *result = 0; + *result = process->GetTLSRegionAddress(); return RESULT_SUCCESS; - case GetInfoType::TotalPhysicalMemoryAvailableWithoutMmHeap: - *result = process->GetTotalPhysicalMemoryAvailable(); + case GetInfoType::TotalPhysicalMemoryAvailableWithoutSystemResource: + *result = process->GetTotalPhysicalMemoryAvailableWithoutSystemResource(); return RESULT_SUCCESS; - case GetInfoType::TotalPhysicalMemoryUsedWithoutMmHeap: - *result = process->GetTotalPhysicalMemoryUsedWithoutMmHeap(); + case GetInfoType::TotalPhysicalMemoryUsedWithoutSystemResource: + *result = process->GetTotalPhysicalMemoryUsedWithoutSystemResource(); return RESULT_SUCCESS; default: @@ -946,6 +956,86 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha } } +/// Maps memory at a desired address +static ResultCode MapPhysicalMemory(Core::System& system, VAddr addr, u64 size) { + LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size); + + if (!Common::Is4KBAligned(addr)) { + LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr); + return ERR_INVALID_ADDRESS; + } + + if (!Common::Is4KBAligned(size)) { + LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size); + return ERR_INVALID_SIZE; + } + + if (size == 0) { + LOG_ERROR(Kernel_SVC, "Size is zero"); + return ERR_INVALID_SIZE; + } + + if (!(addr < addr + size)) { + LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address"); + return ERR_INVALID_MEMORY_RANGE; + } + + Process* const current_process = system.Kernel().CurrentProcess(); + auto& vm_manager = current_process->VMManager(); + + if (current_process->GetSystemResourceSize() == 0) { + LOG_ERROR(Kernel_SVC, "System Resource Size is zero"); + return ERR_INVALID_STATE; + } + + if (!vm_manager.IsWithinMapRegion(addr, size)) { + LOG_ERROR(Kernel_SVC, "Range not within map region"); + return ERR_INVALID_MEMORY_RANGE; + } + + return vm_manager.MapPhysicalMemory(addr, size); +} + +/// Unmaps memory previously mapped via MapPhysicalMemory +static ResultCode UnmapPhysicalMemory(Core::System& system, VAddr addr, u64 size) { + LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size); + + if (!Common::Is4KBAligned(addr)) { + LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr); + return ERR_INVALID_ADDRESS; + } + + if (!Common::Is4KBAligned(size)) { + LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size); + return ERR_INVALID_SIZE; + } + + if (size == 0) { + LOG_ERROR(Kernel_SVC, "Size is zero"); + return ERR_INVALID_SIZE; + } + + if (!(addr < addr + size)) { + LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address"); + return ERR_INVALID_MEMORY_RANGE; + } + + Process* const current_process = system.Kernel().CurrentProcess(); + auto& vm_manager = current_process->VMManager(); + + if (current_process->GetSystemResourceSize() == 0) { + LOG_ERROR(Kernel_SVC, "System Resource Size is zero"); + return ERR_INVALID_STATE; + } + + if (!vm_manager.IsWithinMapRegion(addr, size)) { + LOG_ERROR(Kernel_SVC, "Range not within map region"); + return ERR_INVALID_MEMORY_RANGE; + } + + return vm_manager.UnmapPhysicalMemory(addr, size); +} + /// Sets the thread activity static ResultCode SetThreadActivity(Core::System& system, Handle handle, u32 activity) { LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, activity=0x{:08X}", handle, activity); @@ -1647,8 +1737,8 @@ static ResultCode SignalProcessWideKey(Core::System& system, VAddr condition_var // Wait for an address (via Address Arbiter) static ResultCode WaitForAddress(Core::System& system, VAddr address, u32 type, s32 value, s64 timeout) { - LOG_WARNING(Kernel_SVC, "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, timeout={}", - address, type, value, timeout); + LOG_TRACE(Kernel_SVC, "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, timeout={}", address, + type, value, timeout); // If the passed address is a kernel virtual address, return invalid memory state. if (Memory::IsKernelVirtualAddress(address)) { @@ -1670,8 +1760,8 @@ static ResultCode WaitForAddress(Core::System& system, VAddr address, u32 type, // Signals to an address (via Address Arbiter) static ResultCode SignalToAddress(Core::System& system, VAddr address, u32 type, s32 value, s32 num_to_wake) { - LOG_WARNING(Kernel_SVC, "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, num_to_wake=0x{:X}", - address, type, value, num_to_wake); + LOG_TRACE(Kernel_SVC, "called, address=0x{:X}, type=0x{:X}, value=0x{:X}, num_to_wake=0x{:X}", + address, type, value, num_to_wake); // If the passed address is a kernel virtual address, return invalid memory state. if (Memory::IsKernelVirtualAddress(address)) { @@ -2303,8 +2393,8 @@ static const FunctionDef SVC_Table[] = { {0x29, SvcWrap<GetInfo>, "GetInfo"}, {0x2A, nullptr, "FlushEntireDataCache"}, {0x2B, nullptr, "FlushDataCache"}, - {0x2C, nullptr, "MapPhysicalMemory"}, - {0x2D, nullptr, "UnmapPhysicalMemory"}, + {0x2C, SvcWrap<MapPhysicalMemory>, "MapPhysicalMemory"}, + {0x2D, SvcWrap<UnmapPhysicalMemory>, "UnmapPhysicalMemory"}, {0x2E, nullptr, "GetFutureThreadInfo"}, {0x2F, nullptr, "GetLastThreadInfo"}, {0x30, SvcWrap<GetResourceLimitLimitValue>, "GetResourceLimitLimitValue"}, diff --git a/src/core/hle/kernel/svc_wrap.h b/src/core/hle/kernel/svc_wrap.h index 865473c6f..c2d8d0dc3 100644 --- a/src/core/hle/kernel/svc_wrap.h +++ b/src/core/hle/kernel/svc_wrap.h @@ -32,6 +32,11 @@ void SvcWrap(Core::System& system) { FuncReturn(system, func(system, Param(system, 0)).raw); } +template <ResultCode func(Core::System&, u64, u64)> +void SvcWrap(Core::System& system) { + FuncReturn(system, func(system, Param(system, 0), Param(system, 1)).raw); +} + template <ResultCode func(Core::System&, u32)> void SvcWrap(Core::System& system) { FuncReturn(system, func(system, static_cast<u32>(Param(system, 0))).raw); diff --git a/src/core/hle/kernel/vm_manager.cpp b/src/core/hle/kernel/vm_manager.cpp index 3df5ccb7f..4f45fb03b 100644 --- a/src/core/hle/kernel/vm_manager.cpp +++ b/src/core/hle/kernel/vm_manager.cpp @@ -8,10 +8,11 @@ #include "common/assert.h" #include "common/logging/log.h" #include "common/memory_hook.h" -#include "core/arm/arm_interface.h" #include "core/core.h" #include "core/file_sys/program_metadata.h" #include "core/hle/kernel/errors.h" +#include "core/hle/kernel/process.h" +#include "core/hle/kernel/resource_limit.h" #include "core/hle/kernel/vm_manager.h" #include "core/memory.h" #include "core/memory_setup.h" @@ -49,10 +50,14 @@ bool VirtualMemoryArea::CanBeMergedWith(const VirtualMemoryArea& next) const { type != next.type) { return false; } - if (type == VMAType::AllocatedMemoryBlock && - (backing_block != next.backing_block || offset + size != next.offset)) { + if ((attribute & MemoryAttribute::DeviceMapped) == MemoryAttribute::DeviceMapped) { + // TODO: Can device mapped memory be merged sanely? + // Not merging it may cause inaccuracies versus hardware when memory layout is queried. return false; } + if (type == VMAType::AllocatedMemoryBlock) { + return true; + } if (type == VMAType::BackingMemory && backing_memory + size != next.backing_memory) { return false; } @@ -100,7 +105,7 @@ bool VMManager::IsValidHandle(VMAHandle handle) const { ResultVal<VMManager::VMAHandle> VMManager::MapMemoryBlock(VAddr target, std::shared_ptr<std::vector<u8>> block, std::size_t offset, u64 size, - MemoryState state) { + MemoryState state, VMAPermission perm) { ASSERT(block != nullptr); ASSERT(offset + size <= block->size()); @@ -109,17 +114,8 @@ ResultVal<VMManager::VMAHandle> VMManager::MapMemoryBlock(VAddr target, VirtualMemoryArea& final_vma = vma_handle->second; ASSERT(final_vma.size == size); - system.ArmInterface(0).MapBackingMemory(target, size, block->data() + offset, - VMAPermission::ReadWriteExecute); - system.ArmInterface(1).MapBackingMemory(target, size, block->data() + offset, - VMAPermission::ReadWriteExecute); - system.ArmInterface(2).MapBackingMemory(target, size, block->data() + offset, - VMAPermission::ReadWriteExecute); - system.ArmInterface(3).MapBackingMemory(target, size, block->data() + offset, - VMAPermission::ReadWriteExecute); - final_vma.type = VMAType::AllocatedMemoryBlock; - final_vma.permissions = VMAPermission::ReadWrite; + final_vma.permissions = perm; final_vma.state = state; final_vma.backing_block = std::move(block); final_vma.offset = offset; @@ -137,11 +133,6 @@ ResultVal<VMManager::VMAHandle> VMManager::MapBackingMemory(VAddr target, u8* me VirtualMemoryArea& final_vma = vma_handle->second; ASSERT(final_vma.size == size); - system.ArmInterface(0).MapBackingMemory(target, size, memory, VMAPermission::ReadWriteExecute); - system.ArmInterface(1).MapBackingMemory(target, size, memory, VMAPermission::ReadWriteExecute); - system.ArmInterface(2).MapBackingMemory(target, size, memory, VMAPermission::ReadWriteExecute); - system.ArmInterface(3).MapBackingMemory(target, size, memory, VMAPermission::ReadWriteExecute); - final_vma.type = VMAType::BackingMemory; final_vma.permissions = VMAPermission::ReadWrite; final_vma.state = state; @@ -230,11 +221,6 @@ ResultCode VMManager::UnmapRange(VAddr target, u64 size) { ASSERT(FindVMA(target)->second.size >= size); - system.ArmInterface(0).UnmapMemory(target, size); - system.ArmInterface(1).UnmapMemory(target, size); - system.ArmInterface(2).UnmapMemory(target, size); - system.ArmInterface(3).UnmapMemory(target, size); - return RESULT_SUCCESS; } @@ -308,6 +294,166 @@ ResultVal<VAddr> VMManager::SetHeapSize(u64 size) { return MakeResult<VAddr>(heap_region_base); } +ResultCode VMManager::MapPhysicalMemory(VAddr target, u64 size) { + const auto end_addr = target + size; + const auto last_addr = end_addr - 1; + VAddr cur_addr = target; + + ResultCode result = RESULT_SUCCESS; + + // Check how much memory we've already mapped. + const auto mapped_size_result = SizeOfAllocatedVMAsInRange(target, size); + if (mapped_size_result.Failed()) { + return mapped_size_result.Code(); + } + + // If we've already mapped the desired amount, return early. + const std::size_t mapped_size = *mapped_size_result; + if (mapped_size == size) { + return RESULT_SUCCESS; + } + + // Check that we can map the memory we want. + const auto res_limit = system.CurrentProcess()->GetResourceLimit(); + const u64 physmem_remaining = res_limit->GetMaxResourceValue(ResourceType::PhysicalMemory) - + res_limit->GetCurrentResourceValue(ResourceType::PhysicalMemory); + if (physmem_remaining < (size - mapped_size)) { + return ERR_RESOURCE_LIMIT_EXCEEDED; + } + + // Keep track of the memory regions we unmap. + std::vector<std::pair<u64, u64>> mapped_regions; + + // Iterate, trying to map memory. + { + cur_addr = target; + + auto iter = FindVMA(target); + ASSERT_MSG(iter != vma_map.end(), "MapPhysicalMemory iter != end"); + + while (true) { + const auto& vma = iter->second; + const auto vma_start = vma.base; + const auto vma_end = vma_start + vma.size; + const auto vma_last = vma_end - 1; + + // Map the memory block + const auto map_size = std::min(end_addr - cur_addr, vma_end - cur_addr); + if (vma.state == MemoryState::Unmapped) { + const auto map_res = + MapMemoryBlock(cur_addr, std::make_shared<std::vector<u8>>(map_size, 0), 0, + map_size, MemoryState::Heap, VMAPermission::ReadWrite); + result = map_res.Code(); + if (result.IsError()) { + break; + } + + mapped_regions.emplace_back(cur_addr, map_size); + } + + // Break once we hit the end of the range. + if (last_addr <= vma_last) { + break; + } + + // Advance to the next block. + cur_addr = vma_end; + iter = FindVMA(cur_addr); + ASSERT_MSG(iter != vma_map.end(), "MapPhysicalMemory iter != end"); + } + } + + // If we failed, unmap memory. + if (result.IsError()) { + for (const auto [unmap_address, unmap_size] : mapped_regions) { + ASSERT_MSG(UnmapRange(unmap_address, unmap_size).IsSuccess(), + "MapPhysicalMemory un-map on error"); + } + + return result; + } + + // Update amount of mapped physical memory. + physical_memory_mapped += size - mapped_size; + + return RESULT_SUCCESS; +} + +ResultCode VMManager::UnmapPhysicalMemory(VAddr target, u64 size) { + const auto end_addr = target + size; + const auto last_addr = end_addr - 1; + VAddr cur_addr = target; + + ResultCode result = RESULT_SUCCESS; + + // Check how much memory is currently mapped. + const auto mapped_size_result = SizeOfUnmappablePhysicalMemoryInRange(target, size); + if (mapped_size_result.Failed()) { + return mapped_size_result.Code(); + } + + // If we've already unmapped all the memory, return early. + const std::size_t mapped_size = *mapped_size_result; + if (mapped_size == 0) { + return RESULT_SUCCESS; + } + + // Keep track of the memory regions we unmap. + std::vector<std::pair<u64, u64>> unmapped_regions; + + // Try to unmap regions. + { + cur_addr = target; + + auto iter = FindVMA(target); + ASSERT_MSG(iter != vma_map.end(), "UnmapPhysicalMemory iter != end"); + + while (true) { + const auto& vma = iter->second; + const auto vma_start = vma.base; + const auto vma_end = vma_start + vma.size; + const auto vma_last = vma_end - 1; + + // Unmap the memory block + const auto unmap_size = std::min(end_addr - cur_addr, vma_end - cur_addr); + if (vma.state == MemoryState::Heap) { + result = UnmapRange(cur_addr, unmap_size); + if (result.IsError()) { + break; + } + + unmapped_regions.emplace_back(cur_addr, unmap_size); + } + + // Break once we hit the end of the range. + if (last_addr <= vma_last) { + break; + } + + // Advance to the next block. + cur_addr = vma_end; + iter = FindVMA(cur_addr); + ASSERT_MSG(iter != vma_map.end(), "UnmapPhysicalMemory iter != end"); + } + } + + // If we failed, re-map regions. + // TODO: Preserve memory contents? + if (result.IsError()) { + for (const auto [map_address, map_size] : unmapped_regions) { + const auto remap_res = + MapMemoryBlock(map_address, std::make_shared<std::vector<u8>>(map_size, 0), 0, + map_size, MemoryState::Heap, VMAPermission::None); + ASSERT_MSG(remap_res.Succeeded(), "UnmapPhysicalMemory re-map on error"); + } + } + + // Update mapped amount + physical_memory_mapped -= mapped_size; + + return RESULT_SUCCESS; +} + ResultCode VMManager::MapCodeMemory(VAddr dst_address, VAddr src_address, u64 size) { constexpr auto ignore_attribute = MemoryAttribute::LockedForIPC | MemoryAttribute::DeviceMapped; const auto src_check_result = CheckRangeState( @@ -455,7 +601,7 @@ ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, Mem // Protect mirror with permissions from old region Reprotect(new_vma, vma->second.permissions); // Remove permissions from old region - Reprotect(vma, VMAPermission::None); + ReprotectRange(src_addr, size, VMAPermission::None); return RESULT_SUCCESS; } @@ -588,14 +734,14 @@ VMManager::VMAIter VMManager::SplitVMA(VMAIter vma_handle, u64 offset_in_vma) { VMManager::VMAIter VMManager::MergeAdjacent(VMAIter iter) { const VMAIter next_vma = std::next(iter); if (next_vma != vma_map.end() && iter->second.CanBeMergedWith(next_vma->second)) { - iter->second.size += next_vma->second.size; + MergeAdjacentVMA(iter->second, next_vma->second); vma_map.erase(next_vma); } if (iter != vma_map.begin()) { VMAIter prev_vma = std::prev(iter); if (prev_vma->second.CanBeMergedWith(iter->second)) { - prev_vma->second.size += iter->second.size; + MergeAdjacentVMA(prev_vma->second, iter->second); vma_map.erase(iter); iter = prev_vma; } @@ -604,6 +750,38 @@ VMManager::VMAIter VMManager::MergeAdjacent(VMAIter iter) { return iter; } +void VMManager::MergeAdjacentVMA(VirtualMemoryArea& left, const VirtualMemoryArea& right) { + ASSERT(left.CanBeMergedWith(right)); + + // Always merge allocated memory blocks, even when they don't share the same backing block. + if (left.type == VMAType::AllocatedMemoryBlock && + (left.backing_block != right.backing_block || left.offset + left.size != right.offset)) { + // Check if we can save work. + if (left.offset == 0 && left.size == left.backing_block->size()) { + // Fast case: left is an entire backing block. + left.backing_block->insert(left.backing_block->end(), + right.backing_block->begin() + right.offset, + right.backing_block->begin() + right.offset + right.size); + } else { + // Slow case: make a new memory block for left and right. + auto new_memory = std::make_shared<std::vector<u8>>(); + new_memory->insert(new_memory->end(), left.backing_block->begin() + left.offset, + left.backing_block->begin() + left.offset + left.size); + new_memory->insert(new_memory->end(), right.backing_block->begin() + right.offset, + right.backing_block->begin() + right.offset + right.size); + left.backing_block = new_memory; + left.offset = 0; + } + + // Page table update is needed, because backing memory changed. + left.size += right.size; + UpdatePageTableForVMA(left); + } else { + // Just update the size. + left.size += right.size; + } +} + void VMManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) { switch (vma.type) { case VMAType::Free: @@ -625,9 +803,11 @@ void VMManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) { void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType type) { u64 map_region_size = 0; u64 heap_region_size = 0; - u64 new_map_region_size = 0; + u64 stack_region_size = 0; u64 tls_io_region_size = 0; + u64 stack_and_tls_io_end = 0; + switch (type) { case FileSys::ProgramAddressSpaceType::Is32Bit: case FileSys::ProgramAddressSpaceType::Is32BitNoMap: @@ -643,6 +823,7 @@ void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType ty map_region_size = 0; heap_region_size = 0x80000000; } + stack_and_tls_io_end = 0x40000000; break; case FileSys::ProgramAddressSpaceType::Is36Bit: address_space_width = 36; @@ -652,6 +833,7 @@ void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType ty aslr_region_end = aslr_region_base + 0xFF8000000; map_region_size = 0x180000000; heap_region_size = 0x180000000; + stack_and_tls_io_end = 0x80000000; break; case FileSys::ProgramAddressSpaceType::Is39Bit: address_space_width = 39; @@ -661,7 +843,7 @@ void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType ty aslr_region_end = aslr_region_base + 0x7FF8000000; map_region_size = 0x1000000000; heap_region_size = 0x180000000; - new_map_region_size = 0x80000000; + stack_region_size = 0x80000000; tls_io_region_size = 0x1000000000; break; default: @@ -669,6 +851,8 @@ void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType ty return; } + const u64 stack_and_tls_io_begin = aslr_region_base; + address_space_base = 0; address_space_end = 1ULL << address_space_width; @@ -679,15 +863,20 @@ void VMManager::InitializeMemoryRegionRanges(FileSys::ProgramAddressSpaceType ty heap_region_end = heap_region_base + heap_region_size; heap_end = heap_region_base; - new_map_region_base = heap_region_end; - new_map_region_end = new_map_region_base + new_map_region_size; + stack_region_base = heap_region_end; + stack_region_end = stack_region_base + stack_region_size; - tls_io_region_base = new_map_region_end; + tls_io_region_base = stack_region_end; tls_io_region_end = tls_io_region_base + tls_io_region_size; - if (new_map_region_size == 0) { - new_map_region_base = address_space_base; - new_map_region_end = address_space_end; + if (stack_region_size == 0) { + stack_region_base = stack_and_tls_io_begin; + stack_region_end = stack_and_tls_io_end; + } + + if (tls_io_region_size == 0) { + tls_io_region_base = stack_and_tls_io_begin; + tls_io_region_end = stack_and_tls_io_end; } } @@ -767,6 +956,84 @@ VMManager::CheckResults VMManager::CheckRangeState(VAddr address, u64 size, Memo std::make_tuple(initial_state, initial_permissions, initial_attributes & ~ignore_mask)); } +ResultVal<std::size_t> VMManager::SizeOfAllocatedVMAsInRange(VAddr address, + std::size_t size) const { + const VAddr end_addr = address + size; + const VAddr last_addr = end_addr - 1; + std::size_t mapped_size = 0; + + VAddr cur_addr = address; + auto iter = FindVMA(cur_addr); + ASSERT_MSG(iter != vma_map.end(), "SizeOfAllocatedVMAsInRange iter != end"); + + while (true) { + const auto& vma = iter->second; + const VAddr vma_start = vma.base; + const VAddr vma_end = vma_start + vma.size; + const VAddr vma_last = vma_end - 1; + + // Add size if relevant. + if (vma.state != MemoryState::Unmapped) { + mapped_size += std::min(end_addr - cur_addr, vma_end - cur_addr); + } + + // Break once we hit the end of the range. + if (last_addr <= vma_last) { + break; + } + + // Advance to the next block. + cur_addr = vma_end; + iter = std::next(iter); + ASSERT_MSG(iter != vma_map.end(), "SizeOfAllocatedVMAsInRange iter != end"); + } + + return MakeResult(mapped_size); +} + +ResultVal<std::size_t> VMManager::SizeOfUnmappablePhysicalMemoryInRange(VAddr address, + std::size_t size) const { + const VAddr end_addr = address + size; + const VAddr last_addr = end_addr - 1; + std::size_t mapped_size = 0; + + VAddr cur_addr = address; + auto iter = FindVMA(cur_addr); + ASSERT_MSG(iter != vma_map.end(), "SizeOfUnmappablePhysicalMemoryInRange iter != end"); + + while (true) { + const auto& vma = iter->second; + const auto vma_start = vma.base; + const auto vma_end = vma_start + vma.size; + const auto vma_last = vma_end - 1; + const auto state = vma.state; + const auto attr = vma.attribute; + + // Memory within region must be free or mapped heap. + if (!((state == MemoryState::Heap && attr == MemoryAttribute::None) || + (state == MemoryState::Unmapped))) { + return ERR_INVALID_ADDRESS_STATE; + } + + // Add size if relevant. + if (state != MemoryState::Unmapped) { + mapped_size += std::min(end_addr - cur_addr, vma_end - cur_addr); + } + + // Break once we hit the end of the range. + if (last_addr <= vma_last) { + break; + } + + // Advance to the next block. + cur_addr = vma_end; + iter = std::next(iter); + ASSERT_MSG(iter != vma_map.end(), "SizeOfUnmappablePhysicalMemoryInRange iter != end"); + } + + return MakeResult(mapped_size); +} + u64 VMManager::GetTotalPhysicalMemoryAvailable() const { LOG_WARNING(Kernel, "(STUBBED) called"); return 0xF8000000; @@ -879,21 +1146,21 @@ bool VMManager::IsWithinMapRegion(VAddr address, u64 size) const { return IsInsideAddressRange(address, size, GetMapRegionBaseAddress(), GetMapRegionEndAddress()); } -VAddr VMManager::GetNewMapRegionBaseAddress() const { - return new_map_region_base; +VAddr VMManager::GetStackRegionBaseAddress() const { + return stack_region_base; } -VAddr VMManager::GetNewMapRegionEndAddress() const { - return new_map_region_end; +VAddr VMManager::GetStackRegionEndAddress() const { + return stack_region_end; } -u64 VMManager::GetNewMapRegionSize() const { - return new_map_region_end - new_map_region_base; +u64 VMManager::GetStackRegionSize() const { + return stack_region_end - stack_region_base; } -bool VMManager::IsWithinNewMapRegion(VAddr address, u64 size) const { - return IsInsideAddressRange(address, size, GetNewMapRegionBaseAddress(), - GetNewMapRegionEndAddress()); +bool VMManager::IsWithinStackRegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetStackRegionBaseAddress(), + GetStackRegionEndAddress()); } VAddr VMManager::GetTLSIORegionBaseAddress() const { diff --git a/src/core/hle/kernel/vm_manager.h b/src/core/hle/kernel/vm_manager.h index 752ae62f9..0aecb7499 100644 --- a/src/core/hle/kernel/vm_manager.h +++ b/src/core/hle/kernel/vm_manager.h @@ -349,7 +349,8 @@ public: * @param state MemoryState tag to attach to the VMA. */ ResultVal<VMAHandle> MapMemoryBlock(VAddr target, std::shared_ptr<std::vector<u8>> block, - std::size_t offset, u64 size, MemoryState state); + std::size_t offset, u64 size, MemoryState state, + VMAPermission perm = VMAPermission::ReadWrite); /** * Maps an unmanaged host memory pointer at a given address. @@ -450,6 +451,34 @@ public: /// ResultVal<VAddr> SetHeapSize(u64 size); + /// Maps memory at a given address. + /// + /// @param addr The virtual address to map memory at. + /// @param size The amount of memory to map. + /// + /// @note The destination address must lie within the Map region. + /// + /// @note This function requires that SystemResourceSize be non-zero, + /// however, this is just because if it were not then the + /// resulting page tables could be exploited on hardware by + /// a malicious program. SystemResource usage does not need + /// to be explicitly checked or updated here. + ResultCode MapPhysicalMemory(VAddr target, u64 size); + + /// Unmaps memory at a given address. + /// + /// @param addr The virtual address to unmap memory at. + /// @param size The amount of memory to unmap. + /// + /// @note The destination address must lie within the Map region. + /// + /// @note This function requires that SystemResourceSize be non-zero, + /// however, this is just because if it were not then the + /// resulting page tables could be exploited on hardware by + /// a malicious program. SystemResource usage does not need + /// to be explicitly checked or updated here. + ResultCode UnmapPhysicalMemory(VAddr target, u64 size); + /// Maps a region of memory as code memory. /// /// @param dst_address The base address of the region to create the aliasing memory region. @@ -596,17 +625,17 @@ public: /// Determines whether or not the specified range is within the map region. bool IsWithinMapRegion(VAddr address, u64 size) const; - /// Gets the base address of the new map region. - VAddr GetNewMapRegionBaseAddress() const; + /// Gets the base address of the stack region. + VAddr GetStackRegionBaseAddress() const; - /// Gets the end address of the new map region. - VAddr GetNewMapRegionEndAddress() const; + /// Gets the end address of the stack region. + VAddr GetStackRegionEndAddress() const; - /// Gets the total size of the new map region in bytes. - u64 GetNewMapRegionSize() const; + /// Gets the total size of the stack region in bytes. + u64 GetStackRegionSize() const; - /// Determines whether or not the given address range is within the new map region - bool IsWithinNewMapRegion(VAddr address, u64 size) const; + /// Determines whether or not the given address range is within the stack region + bool IsWithinStackRegion(VAddr address, u64 size) const; /// Gets the base address of the TLS IO region. VAddr GetTLSIORegionBaseAddress() const; @@ -657,6 +686,11 @@ private: */ VMAIter MergeAdjacent(VMAIter vma); + /** + * Merges two adjacent VMAs. + */ + void MergeAdjacentVMA(VirtualMemoryArea& left, const VirtualMemoryArea& right); + /// Updates the pages corresponding to this VMA so they match the VMA's attributes. void UpdatePageTableForVMA(const VirtualMemoryArea& vma); @@ -701,6 +735,13 @@ private: MemoryAttribute attribute_mask, MemoryAttribute attribute, MemoryAttribute ignore_mask) const; + /// Gets the amount of memory currently mapped (state != Unmapped) in a range. + ResultVal<std::size_t> SizeOfAllocatedVMAsInRange(VAddr address, std::size_t size) const; + + /// Gets the amount of memory unmappable by UnmapPhysicalMemory in a range. + ResultVal<std::size_t> SizeOfUnmappablePhysicalMemoryInRange(VAddr address, + std::size_t size) const; + /** * A map covering the entirety of the managed address space, keyed by the `base` field of each * VMA. It must always be modified by splitting or merging VMAs, so that the invariant @@ -726,8 +767,8 @@ private: VAddr map_region_base = 0; VAddr map_region_end = 0; - VAddr new_map_region_base = 0; - VAddr new_map_region_end = 0; + VAddr stack_region_base = 0; + VAddr stack_region_end = 0; VAddr tls_io_region_base = 0; VAddr tls_io_region_end = 0; @@ -742,6 +783,11 @@ private: // end of the range. This is essentially 'base_address + current_size'. VAddr heap_end = 0; + // The current amount of memory mapped via MapPhysicalMemory. + // This is used here (and in Nintendo's kernel) only for debugging, and does not impact + // any behavior. + u64 physical_memory_mapped = 0; + Core::System& system; }; } // namespace Kernel |