diff options
Diffstat (limited to 'src/core/memory.h')
-rw-r--r-- | src/core/memory.h | 104 |
1 files changed, 7 insertions, 97 deletions
diff --git a/src/core/memory.h b/src/core/memory.h index 1acf5ce8c..04e2c5f1d 100644 --- a/src/core/memory.h +++ b/src/core/memory.h @@ -6,11 +6,11 @@ #include <cstddef> #include <string> -#include <tuple> -#include <vector> -#include <boost/icl/interval_map.hpp> #include "common/common_types.h" -#include "core/memory_hook.h" + +namespace Common { +struct PageTable; +} namespace Kernel { class Process; @@ -26,83 +26,8 @@ constexpr std::size_t PAGE_BITS = 12; constexpr u64 PAGE_SIZE = 1ULL << PAGE_BITS; constexpr u64 PAGE_MASK = PAGE_SIZE - 1; -enum class PageType : u8 { - /// Page is unmapped and should cause an access error. - Unmapped, - /// Page is mapped to regular memory. This is the only type you can get pointers to. - Memory, - /// Page is mapped to regular memory, but also needs to check for rasterizer cache flushing and - /// invalidation - RasterizerCachedMemory, - /// Page is mapped to a I/O region. Writing and reading to this page is handled by functions. - Special, -}; - -struct SpecialRegion { - enum class Type { - DebugHook, - IODevice, - } type; - - MemoryHookPointer handler; - - bool operator<(const SpecialRegion& other) const { - return std::tie(type, handler) < std::tie(other.type, other.handler); - } - - bool operator==(const SpecialRegion& other) const { - return std::tie(type, handler) == std::tie(other.type, other.handler); - } -}; - -/** - * A (reasonably) fast way of allowing switchable and remappable process address spaces. It loosely - * mimics the way a real CPU page table works. - */ -struct PageTable { - explicit PageTable(); - explicit PageTable(std::size_t address_space_width_in_bits); - ~PageTable(); - - /** - * Resizes the page table to be able to accomodate enough pages within - * a given address space. - * - * @param address_space_width_in_bits The address size width in bits. - */ - void Resize(std::size_t address_space_width_in_bits); - - /** - * Vector of memory pointers backing each page. An entry can only be non-null if the - * corresponding entry in the `attributes` vector is of type `Memory`. - */ - std::vector<u8*> pointers; - - /** - * Contains MMIO handlers that back memory regions whose entries in the `attribute` vector is - * of type `Special`. - */ - boost::icl::interval_map<VAddr, std::set<SpecialRegion>> special_regions; - - /** - * Vector of fine grained page attributes. If it is set to any value other than `Memory`, then - * the corresponding entry in `pointers` MUST be set to null. - */ - std::vector<PageType> attributes; -}; - /// Virtual user-space memory regions enum : VAddr { - /// Read-only page containing kernel and system configuration values. - CONFIG_MEMORY_VADDR = 0x1FF80000, - CONFIG_MEMORY_SIZE = 0x00001000, - CONFIG_MEMORY_VADDR_END = CONFIG_MEMORY_VADDR + CONFIG_MEMORY_SIZE, - - /// Usually read-only page containing mostly values read from hardware. - SHARED_PAGE_VADDR = 0x1FF81000, - SHARED_PAGE_SIZE = 0x00001000, - SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE, - /// TLS (Thread-Local Storage) related. TLS_ENTRY_SIZE = 0x200, @@ -115,9 +40,9 @@ enum : VAddr { KERNEL_REGION_END = KERNEL_REGION_VADDR + KERNEL_REGION_SIZE, }; -/// Currently active page table -void SetCurrentPageTable(PageTable* page_table); -PageTable* GetCurrentPageTable(); +/// Changes the currently active page table to that of +/// the given process instance. +void SetCurrentPageTable(Kernel::Process& process); /// Determines if the given VAddr is valid for the specified process. bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr); @@ -147,24 +72,9 @@ u8* GetPointer(VAddr vaddr); std::string ReadCString(VAddr vaddr, std::size_t max_length); -enum class FlushMode { - /// Write back modified surfaces to RAM - Flush, - /// Remove region from the cache - Invalidate, - /// Write back modified surfaces to RAM, and also remove them from the cache - FlushAndInvalidate, -}; - /** * Mark each page touching the region as cached. */ void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached); -/** - * Flushes and invalidates any externally cached rasterizer resources touching the given virtual - * address region. - */ -void RasterizerFlushVirtualRegion(VAddr start, u64 size, FlushMode mode); - } // namespace Memory |