diff options
Diffstat (limited to 'src/core/hle/kernel/memory/page_table.h')
-rw-r--r-- | src/core/hle/kernel/memory/page_table.h | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/core/hle/kernel/memory/page_table.h b/src/core/hle/kernel/memory/page_table.h new file mode 100644 index 000000000..6c3a3c275 --- /dev/null +++ b/src/core/hle/kernel/memory/page_table.h @@ -0,0 +1,274 @@ +// Copyright 2020 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <list> +#include <memory> +#include <mutex> + +#include "common/common_funcs.h" +#include "common/common_types.h" +#include "common/page_table.h" +#include "core/file_sys/program_metadata.h" +#include "core/hle/kernel/memory/memory_block.h" +#include "core/hle/kernel/memory/memory_manager.h" + +namespace Core { +class System; +} + +namespace Kernel::Memory { + +class MemoryBlockManager; + +class PageTable final : NonCopyable { +public: + explicit PageTable(Core::System& system); + + ResultCode InitializeForProcess(FileSys::ProgramAddressSpaceType as_type, bool enable_aslr, + VAddr code_addr, std::size_t code_size, + Memory::MemoryManager::Pool pool); + ResultCode MapProcessCode(VAddr addr, std::size_t pages_count, MemoryState state, + MemoryPermission perm); + ResultCode MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size); + ResultCode UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size); + ResultCode MapPhysicalMemory(VAddr addr, std::size_t size); + ResultCode UnmapPhysicalMemory(VAddr addr, std::size_t size); + ResultCode UnmapMemory(VAddr addr, std::size_t size); + ResultCode Map(VAddr dst_addr, VAddr src_addr, std::size_t size); + ResultCode Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size); + ResultCode MapPages(VAddr addr, PageLinkedList& page_linked_list, MemoryState state, + MemoryPermission perm); + ResultCode SetCodeMemoryPermission(VAddr addr, std::size_t size, MemoryPermission perm); + MemoryInfo QueryInfo(VAddr addr); + ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, MemoryPermission perm); + ResultCode ResetTransferMemory(VAddr addr, std::size_t size); + ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, MemoryAttribute mask, + MemoryAttribute value); + ResultCode SetHeapCapacity(std::size_t new_heap_capacity); + ResultVal<VAddr> SetHeapSize(std::size_t size); + ResultVal<VAddr> AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align, + bool is_map_only, VAddr region_start, + std::size_t region_num_pages, MemoryState state, + MemoryPermission perm, PAddr map_addr = 0); + PAddr GetPhysicalAddr(VAddr addr); + + Common::PageTable& PageTableImpl() { + return page_table_impl; + } + + const Common::PageTable& PageTableImpl() const { + return page_table_impl; + } + +private: + enum class OperationType : u32 { + Map, + MapGroup, + Unmap, + ChangePermissions, + ChangePermissionsAndRefresh, + }; + + static constexpr MemoryAttribute DefaultMemoryIgnoreAttr = + MemoryAttribute::DontCareMask | MemoryAttribute::IpcLocked | MemoryAttribute::DeviceShared; + + ResultCode InitializeMemoryLayout(VAddr start, VAddr end); + ResultCode MapPages(VAddr addr, const PageLinkedList& page_linked_list, MemoryPermission perm); + void MapPhysicalMemory(PageLinkedList& page_linked_list, VAddr start, VAddr end); + bool IsRegionMapped(VAddr address, u64 size); + bool IsRegionContiguous(VAddr addr, u64 size) const; + void AddRegionToPages(VAddr start, std::size_t num_pages, PageLinkedList& page_linked_list); + MemoryInfo QueryInfoImpl(VAddr addr); + VAddr AllocateVirtualMemory(VAddr start, std::size_t region_num_pages, u64 needed_num_pages, + std::size_t align); + ResultCode Operate(VAddr addr, std::size_t num_pages, const PageLinkedList& page_group, + OperationType operation); + ResultCode Operate(VAddr addr, std::size_t num_pages, MemoryPermission perm, + OperationType operation, PAddr map_addr = 0); + constexpr VAddr GetRegionAddress(MemoryState state) const; + constexpr std::size_t GetRegionSize(MemoryState state) const; + constexpr bool CanContain(VAddr addr, std::size_t size, MemoryState state) const; + + constexpr ResultCode CheckMemoryState(const MemoryInfo& info, MemoryState state_mask, + MemoryState state, MemoryPermission perm_mask, + MemoryPermission perm, MemoryAttribute attr_mask, + MemoryAttribute attr) const; + ResultCode CheckMemoryState(MemoryState* out_state, MemoryPermission* out_perm, + MemoryAttribute* out_attr, VAddr addr, std::size_t size, + MemoryState state_mask, MemoryState state, + MemoryPermission perm_mask, MemoryPermission perm, + MemoryAttribute attr_mask, MemoryAttribute attr, + MemoryAttribute ignore_attr = DefaultMemoryIgnoreAttr); + ResultCode CheckMemoryState(VAddr addr, std::size_t size, MemoryState state_mask, + MemoryState state, MemoryPermission perm_mask, + MemoryPermission perm, MemoryAttribute attr_mask, + MemoryAttribute attr, + MemoryAttribute ignore_attr = DefaultMemoryIgnoreAttr) { + return CheckMemoryState(nullptr, nullptr, nullptr, addr, size, state_mask, state, perm_mask, + perm, attr_mask, attr, ignore_attr); + } + + std::recursive_mutex page_table_lock; + std::unique_ptr<MemoryBlockManager> block_manager; + +public: + constexpr VAddr GetAddressSpaceStart() const { + return address_space_start; + } + constexpr VAddr GetAddressSpaceEnd() const { + return address_space_end; + } + constexpr std::size_t GetAddressSpaceSize() const { + return address_space_end - address_space_start; + } + constexpr VAddr GetHeapRegionStart() const { + return heap_region_start; + } + constexpr VAddr GetHeapRegionEnd() const { + return heap_region_end; + } + constexpr std::size_t GetHeapRegionSize() const { + return heap_region_end - heap_region_start; + } + constexpr VAddr GetAliasRegionStart() const { + return alias_region_start; + } + constexpr VAddr GetAliasRegionEnd() const { + return alias_region_end; + } + constexpr std::size_t GetAliasRegionSize() const { + return alias_region_end - alias_region_start; + } + constexpr VAddr GetStackRegionStart() const { + return stack_region_start; + } + constexpr VAddr GetStackRegionEnd() const { + return stack_region_end; + } + constexpr std::size_t GetStackRegionSize() const { + return stack_region_end - stack_region_start; + } + constexpr VAddr GetKernelMapRegionStart() const { + return kernel_map_region_start; + } + constexpr VAddr GetKernelMapRegionEnd() const { + return kernel_map_region_end; + } + constexpr VAddr GetCodeRegionStart() const { + return code_region_start; + } + constexpr VAddr GetCodeRegionEnd() const { + return code_region_end; + } + constexpr VAddr GetAliasCodeRegionStart() const { + return alias_code_region_start; + } + constexpr VAddr GetAliasCodeRegionSize() const { + return alias_code_region_end - alias_code_region_start; + } + constexpr std::size_t GetAddressSpaceWidth() const { + return address_space_width; + } + constexpr std::size_t GetHeapSize() { + return current_heap_addr - heap_region_start; + } + constexpr std::size_t GetTotalHeapSize() { + return GetHeapSize() + physical_memory_usage; + } + constexpr bool IsInsideAddressSpace(VAddr address, std::size_t size) const { + return address_space_start <= address && address + size - 1 <= address_space_end - 1; + } + constexpr bool IsOutsideAliasRegion(VAddr address, std::size_t size) const { + return alias_region_start > address || address + size - 1 > alias_region_end - 1; + } + constexpr bool IsOutsideStackRegion(VAddr address, std::size_t size) const { + return stack_region_start > address || address + size - 1 > stack_region_end - 1; + } + constexpr bool IsInvalidRegion(VAddr address, std::size_t size) const { + return address + size - 1 > GetAliasCodeRegionStart() + GetAliasCodeRegionSize() - 1; + } + constexpr bool IsInsideHeapRegion(VAddr address, std::size_t size) const { + return address + size > heap_region_start && heap_region_end > address; + } + constexpr bool IsInsideAliasRegion(VAddr address, std::size_t size) const { + return address + size > alias_region_start && alias_region_end > address; + } + constexpr bool IsOutsideASLRRegion(VAddr address, std::size_t size) const { + if (IsInvalidRegion(address, size)) { + return true; + } + if (IsInsideHeapRegion(address, size)) { + return true; + } + if (IsInsideAliasRegion(address, size)) { + return true; + } + return {}; + } + constexpr bool IsInsideASLRRegion(VAddr address, std::size_t size) const { + return !IsOutsideASLRRegion(address, size); + } + +private: + constexpr bool Contains(VAddr addr) const { + return address_space_start <= addr && addr <= address_space_end - 1; + } + constexpr bool Contains(VAddr addr, std::size_t size) const { + return address_space_start <= addr && addr < addr + size && + addr + size - 1 <= address_space_end - 1; + } + constexpr bool IsKernel() const { + return is_kernel; + } + constexpr bool IsAslrEnabled() const { + return is_aslr_enabled; + } + + constexpr std::size_t GetNumGuardPages() const { + return IsKernel() ? 1 : 4; + } + + constexpr bool ContainsPages(VAddr addr, std::size_t num_pages) const { + return (address_space_start <= addr) && + (num_pages <= (address_space_end - address_space_start) / PageSize) && + (addr + num_pages * PageSize - 1 <= address_space_end - 1); + } + +private: + VAddr address_space_start{}; + VAddr address_space_end{}; + VAddr heap_region_start{}; + VAddr heap_region_end{}; + VAddr current_heap_end{}; + VAddr alias_region_start{}; + VAddr alias_region_end{}; + VAddr stack_region_start{}; + VAddr stack_region_end{}; + VAddr kernel_map_region_start{}; + VAddr kernel_map_region_end{}; + VAddr code_region_start{}; + VAddr code_region_end{}; + VAddr alias_code_region_start{}; + VAddr alias_code_region_end{}; + VAddr current_heap_addr{}; + + std::size_t heap_capacity{}; + std::size_t physical_memory_usage{}; + std::size_t max_heap_size{}; + std::size_t max_physical_memory_size{}; + std::size_t address_space_width{}; + + bool is_kernel{}; + bool is_aslr_enabled{}; + + MemoryManager::Pool memory_pool{MemoryManager::Pool::Application}; + + Common::PageTable page_table_impl; + + Core::System& system; +}; + +} // namespace Kernel::Memory |