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Expose page table to dynarmic for optimized reads and writes to the JIT

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This commit is contained in:
James Rowe 2016-11-24 12:42:32 -07:00
parent 82210ab480
commit bbe57a66ca
3 changed files with 18 additions and 6 deletions
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14
src/core/memory.cpp
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@ -45,13 +45,11 @@ struct SpecialRegion {
* requires an indexed fetch and a check for NULL.
*/
struct PageTable {
static const size_t NUM_ENTRIES = 1 << (32 - PAGE_BITS);
/**
* Array of memory pointers backing each page. An entry can only be non-null if the
* corresponding entry in the `attributes` array is of type `Memory`.
*/
std::array<u8*, NUM_ENTRIES> pointers;
std::array<u8*, PAGE_TABLE_NUM_ENTRIES> pointers;
/**
* Contains MMIO handlers that back memory regions whose entries in the `attribute` array is of
@ -63,13 +61,13 @@ struct PageTable {
* Array 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::array<PageType, NUM_ENTRIES> attributes;
std::array<PageType, PAGE_TABLE_NUM_ENTRIES> attributes;
/**
* Indicates the number of externally cached resources touching a page that should be
* flushed before the memory is accessed
*/
std::array<u8, NUM_ENTRIES> cached_res_count;
std::array<u8, PAGE_TABLE_NUM_ENTRIES> cached_res_count;
};
/// Singular page table used for the singleton process
@ -77,6 +75,10 @@ static PageTable main_page_table;
/// Currently active page table
static PageTable* current_page_table = &main_page_table;
std::array<u8*, PAGE_TABLE_NUM_ENTRIES>* GetCurrentPageTablePointers() {
return &current_page_table->pointers;
}
static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
LOG_DEBUG(HW_Memory, "Mapping %p onto %08X-%08X", memory, base * PAGE_SIZE,
(base + size) * PAGE_SIZE);
@ -84,7 +86,7 @@ static void MapPages(u32 base, u32 size, u8* memory, PageType type) {
u32 end = base + size;
while (base != end) {
ASSERT_MSG(base < PageTable::NUM_ENTRIES, "out of range mapping at %08X", base);
ASSERT_MSG(base < PAGE_TABLE_NUM_ENTRIES, "out of range mapping at %08X", base);
// Since pages are unmapped on shutdown after video core is shutdown, the renderer may be
// null here