core: memory: Add a work-around to allocate and access kernel memory regions by vaddr.

This commit is contained in:
bunnei 2021-04-02 17:06:21 -07:00
parent 02c2b28cd0
commit 3401676768
3 changed files with 46 additions and 1 deletions

View file

@ -311,6 +311,7 @@ struct System::Impl {
gpu_core.reset(); gpu_core.reset();
perf_stats.reset(); perf_stats.reset();
kernel.Shutdown(); kernel.Shutdown();
memory.Reset();
applet_manager.ClearAll(); applet_manager.ClearAll();
LOG_DEBUG(Core, "Shutdown OK"); LOG_DEBUG(Core, "Shutdown OK");

View file

@ -82,6 +82,22 @@ struct Memory::Impl {
return nullptr; return nullptr;
} }
u8* GetKernelBuffer(VAddr start_vaddr, size_t size) {
// TODO(bunnei): This is just a workaround until we have kernel memory layout mapped &
// managed. Until then, we use this to allocate and access kernel memory regions.
auto search = kernel_memory_regions.find(start_vaddr);
if (search != kernel_memory_regions.end()) {
return search->second.get();
}
std::unique_ptr<u8[]> new_memory_region{new u8[size]};
u8* raw_ptr = new_memory_region.get();
kernel_memory_regions[start_vaddr] = std::move(new_memory_region);
return raw_ptr;
}
u8 Read8(const VAddr addr) { u8 Read8(const VAddr addr) {
return Read<u8>(addr); return Read<u8>(addr);
} }
@ -711,12 +727,20 @@ struct Memory::Impl {
} }
Common::PageTable* current_page_table = nullptr; Common::PageTable* current_page_table = nullptr;
std::unordered_map<VAddr, std::unique_ptr<u8[]>> kernel_memory_regions;
Core::System& system; Core::System& system;
}; };
Memory::Memory(Core::System& system) : impl{std::make_unique<Impl>(system)} {} Memory::Memory(Core::System& system_) : system{system_} {
Reset();
}
Memory::~Memory() = default; Memory::~Memory() = default;
void Memory::Reset() {
impl = std::make_unique<Impl>(system);
}
void Memory::SetCurrentPageTable(Kernel::Process& process, u32 core_id) { void Memory::SetCurrentPageTable(Kernel::Process& process, u32 core_id) {
impl->SetCurrentPageTable(process, core_id); impl->SetCurrentPageTable(process, core_id);
} }
@ -741,6 +765,10 @@ u8* Memory::GetPointer(VAddr vaddr) {
return impl->GetPointer(vaddr); return impl->GetPointer(vaddr);
} }
u8* Memory::GetKernelBuffer(VAddr start_vaddr, size_t size) {
return impl->GetKernelBuffer(start_vaddr, size);
}
const u8* Memory::GetPointer(VAddr vaddr) const { const u8* Memory::GetPointer(VAddr vaddr) const {
return impl->GetPointer(vaddr); return impl->GetPointer(vaddr);
} }

View file

@ -58,6 +58,11 @@ public:
Memory(Memory&&) = default; Memory(Memory&&) = default;
Memory& operator=(Memory&&) = default; Memory& operator=(Memory&&) = default;
/**
* Resets the state of the Memory system.
*/
void Reset();
/** /**
* Changes the currently active page table to that of the given process instance. * Changes the currently active page table to that of the given process instance.
* *
@ -116,6 +121,15 @@ public:
*/ */
u8* GetPointer(VAddr vaddr); u8* GetPointer(VAddr vaddr);
/**
* Gets a pointer to the start of a kernel heap allocated memory region. Will allocate one if it
* does not already exist.
*
* @param start_vaddr Start virtual address for the memory region.
* @param size Size of the memory region.
*/
u8* GetKernelBuffer(VAddr start_vaddr, size_t size);
template <typename T> template <typename T>
T* GetPointer(VAddr vaddr) { T* GetPointer(VAddr vaddr) {
return reinterpret_cast<T*>(GetPointer(vaddr)); return reinterpret_cast<T*>(GetPointer(vaddr));
@ -524,6 +538,8 @@ public:
void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached); void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached);
private: private:
Core::System& system;
struct Impl; struct Impl;
std::unique_ptr<Impl> impl; std::unique_ptr<Impl> impl;
}; };