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Merge pull request #2210 from jroweboy/pagetables
Expose page table to dynarmic for optimized reads and writes to the JIT
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commit
ed2ff8df85
@ -52,6 +52,7 @@ static Dynarmic::UserCallbacks GetUserCallbacks(ARMul_State* interpeter_state) {
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user_callbacks.MemoryWrite16 = &Memory::Write16;
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user_callbacks.MemoryWrite32 = &Memory::Write32;
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user_callbacks.MemoryWrite64 = &Memory::Write64;
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user_callbacks.page_table = Memory::GetCurrentPageTablePointers();
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return user_callbacks;
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}
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@ -45,13 +45,11 @@ struct SpecialRegion {
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* requires an indexed fetch and a check for NULL.
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*/
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struct PageTable {
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static const size_t NUM_ENTRIES = 1 << (32 - PAGE_BITS);
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/**
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* Array of memory pointers backing each page. An entry can only be non-null if the
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* corresponding entry in the `attributes` array is of type `Memory`.
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*/
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std::array<u8*, NUM_ENTRIES> pointers;
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std::array<u8*, PAGE_TABLE_NUM_ENTRIES> pointers;
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/**
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* Contains MMIO handlers that back memory regions whose entries in the `attribute` array is of
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@ -63,13 +61,13 @@ struct PageTable {
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* Array of fine grained page attributes. If it is set to any value other than `Memory`, then
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* the corresponding entry in `pointers` MUST be set to null.
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*/
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std::array<PageType, NUM_ENTRIES> attributes;
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std::array<PageType, PAGE_TABLE_NUM_ENTRIES> attributes;
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/**
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* Indicates the number of externally cached resources touching a page that should be
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* flushed before the memory is accessed
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*/
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std::array<u8, NUM_ENTRIES> cached_res_count;
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std::array<u8, PAGE_TABLE_NUM_ENTRIES> cached_res_count;
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};
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/// Singular page table used for the singleton process
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@ -77,6 +75,10 @@ static PageTable main_page_table;
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/// Currently active page table
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static PageTable* current_page_table = &main_page_table;
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std::array<u8*, PAGE_TABLE_NUM_ENTRIES>* GetCurrentPageTablePointers() {
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return ¤t_page_table->pointers;
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}
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static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
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LOG_DEBUG(HW_Memory, "Mapping %p onto %08X-%08X", memory, base * PAGE_SIZE,
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(base + size) * PAGE_SIZE);
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@ -84,7 +86,7 @@ static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
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u32 end = base + size;
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while (base != end) {
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ASSERT_MSG(base < PageTable::NUM_ENTRIES, "out of range mapping at %08X", base);
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ASSERT_MSG(base < PAGE_TABLE_NUM_ENTRIES, "out of range mapping at %08X", base);
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// Since pages are unmapped on shutdown after video core is shutdown, the renderer may be
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// null here
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@ -4,6 +4,7 @@
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#pragma once
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#include <array>
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#include <cstddef>
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#include <string>
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#include "common/common_types.h"
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@ -17,6 +18,7 @@ namespace Memory {
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const u32 PAGE_SIZE = 0x1000;
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const u32 PAGE_MASK = PAGE_SIZE - 1;
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const int PAGE_BITS = 12;
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const size_t PAGE_TABLE_NUM_ENTRIES = 1 << (32 - PAGE_BITS);
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/// Physical memory regions as seen from the ARM11
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enum : PAddr {
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@ -166,4 +168,11 @@ void RasterizerFlushRegion(PAddr start, u32 size);
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* Flushes and invalidates any externally cached rasterizer resources touching the given region.
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*/
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void RasterizerFlushAndInvalidateRegion(PAddr start, u32 size);
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/**
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* Dynarmic has an optimization to memory accesses when the pointer to the page exists that
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* can be used by setting up the current page table as a callback. This function is used to
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* retrieve the current page table for that purpose.
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*/
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std::array<u8*, PAGE_TABLE_NUM_ENTRIES>* GetCurrentPageTablePointers();
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}
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