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Memory: create rasterizer cache marker

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This commit is contained in:
Weiyi Wang 2018-12-10 21:43:39 -05:00
parent 80f1076a07
commit e7a3c296c3
1 changed files with 35 additions and 0 deletions
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35
src/core/memory.cpp
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@ -21,6 +21,40 @@
namespace Memory {
class RasterizerCacheMarker {
public:
void Mark(VAddr addr, bool cached) {
bool* p = At(addr);
if (p)
*p = cached;
}
bool IsCached(VAddr addr) {
bool* p = At(addr);
if (p)
return *p;
return false;
}
private:
bool* At(VAddr addr) {
if (addr >= VRAM_VADDR && addr < VRAM_VADDR_END) {
return &vram[(addr - VRAM_VADDR) / PAGE_SIZE];
}
if (addr >= LINEAR_HEAP_VADDR && addr < LINEAR_HEAP_VADDR_END) {
return &linear_heap[(addr - LINEAR_HEAP_VADDR) / PAGE_SIZE];
}
if (addr >= NEW_LINEAR_HEAP_VADDR && addr < NEW_LINEAR_HEAP_VADDR_END) {
return &new_linear_heap[(addr - NEW_LINEAR_HEAP_VADDR) / PAGE_SIZE];
}
return nullptr;
}
std::array<bool, VRAM_SIZE / PAGE_SIZE> vram{};
std::array<bool, LINEAR_HEAP_SIZE / PAGE_SIZE> linear_heap{};
std::array<bool, NEW_LINEAR_HEAP_SIZE / PAGE_SIZE> new_linear_heap{};
};
class MemorySystem::Impl {
public:
Impl() {
@ -36,6 +70,7 @@ public:
std::unique_ptr<u8[]> n3ds_extra_ram = std::make_unique<u8[]>(Memory::N3DS_EXTRA_RAM_SIZE);
PageTable* current_page_table = nullptr;
RasterizerCacheMarker cache_marker;
};
MemorySystem::MemorySystem() : impl(std::make_unique<Impl>()) {}