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authorbunnei <bunneidev@gmail.com>2019-03-17 19:42:57 +0100
committerGitHub <noreply@github.com>2019-03-17 19:42:57 +0100
commit57ca1e3e6942d1ef1b59c458e76ba969f0b739d5 (patch)
tree1d7a026c695a73932030048329a2c0707656666e /src/core/memory.h
parentMerge pull request #2251 from bunnei/skip-zero-flush (diff)
parentcore: Move PageTable struct into Common. (diff)
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Diffstat (limited to '')
-rw-r--r--src/core/memory.h74
1 files changed, 6 insertions, 68 deletions
diff --git a/src/core/memory.h b/src/core/memory.h
index c2c6643ee..3f60d868c 100644
--- a/src/core/memory.h
+++ b/src/core/memory.h
@@ -10,7 +10,10 @@
#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;
@@ -26,71 +29,6 @@ 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.
@@ -116,8 +54,8 @@ enum : VAddr {
};
/// Currently active page table
-void SetCurrentPageTable(PageTable* page_table);
-PageTable* GetCurrentPageTable();
+void SetCurrentPageTable(Common::PageTable* page_table);
+Common::PageTable* GetCurrentPageTable();
/// Determines if the given VAddr is valid for the specified process.
bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);