diff options
Diffstat (limited to 'src/core/memory.h')
| -rw-r--r-- | src/core/memory.h | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/src/core/memory.h b/src/core/memory.h index dddfaf4a4..47ca6a35a 100644 --- a/src/core/memory.h +++ b/src/core/memory.h @@ -498,209 +498,4 @@ private: std::unique_ptr<Impl> impl; }; -enum GuestMemoryFlags : u32 { - Read = 1 << 0, - Write = 1 << 1, - Safe = 1 << 2, - Cached = 1 << 3, - - SafeRead = Read | Safe, - SafeWrite = Write | Safe, - SafeReadWrite = SafeRead | SafeWrite, - SafeReadCachedWrite = SafeReadWrite | Cached, - - UnsafeRead = Read, - UnsafeWrite = Write, - UnsafeReadWrite = UnsafeRead | UnsafeWrite, - UnsafeReadCachedWrite = UnsafeReadWrite | Cached, -}; - -namespace { -template <typename M, typename T, GuestMemoryFlags FLAGS> -class GuestMemory { - using iterator = T*; - using const_iterator = const T*; - using value_type = T; - using element_type = T; - using iterator_category = std::contiguous_iterator_tag; - -public: - GuestMemory() = delete; - explicit GuestMemory(M& memory, u64 addr, std::size_t size, - Common::ScratchBuffer<T>* backup = nullptr) - : m_memory{memory}, m_addr{addr}, m_size{size} { - static_assert(FLAGS & GuestMemoryFlags::Read || FLAGS & GuestMemoryFlags::Write); - if constexpr (FLAGS & GuestMemoryFlags::Read) { - Read(addr, size, backup); - } - } - - ~GuestMemory() = default; - - T* data() noexcept { - return m_data_span.data(); - } - - const T* data() const noexcept { - return m_data_span.data(); - } - - size_t size() const noexcept { - return m_size; - } - - size_t size_bytes() const noexcept { - return this->size() * sizeof(T); - } - - [[nodiscard]] T* begin() noexcept { - return this->data(); - } - - [[nodiscard]] const T* begin() const noexcept { - return this->data(); - } - - [[nodiscard]] T* end() noexcept { - return this->data() + this->size(); - } - - [[nodiscard]] const T* end() const noexcept { - return this->data() + this->size(); - } - - T& operator[](size_t index) noexcept { - return m_data_span[index]; - } - - const T& operator[](size_t index) const noexcept { - return m_data_span[index]; - } - - void SetAddressAndSize(u64 addr, std::size_t size) noexcept { - m_addr = addr; - m_size = size; - m_addr_changed = true; - } - - std::span<T> Read(u64 addr, std::size_t size, - Common::ScratchBuffer<T>* backup = nullptr) noexcept { - m_addr = addr; - m_size = size; - if (m_size == 0) { - m_is_data_copy = true; - return {}; - } - - if (this->TrySetSpan()) { - if constexpr (FLAGS & GuestMemoryFlags::Safe) { - m_memory.FlushRegion(m_addr, this->size_bytes()); - } - } else { - if (backup) { - backup->resize_destructive(this->size()); - m_data_span = *backup; - } else { - m_data_copy.resize(this->size()); - m_data_span = std::span(m_data_copy); - } - m_is_data_copy = true; - m_span_valid = true; - if constexpr (FLAGS & GuestMemoryFlags::Safe) { - m_memory.ReadBlock(m_addr, this->data(), this->size_bytes()); - } else { - m_memory.ReadBlockUnsafe(m_addr, this->data(), this->size_bytes()); - } - } - return m_data_span; - } - - void Write(std::span<T> write_data) noexcept { - if constexpr (FLAGS & GuestMemoryFlags::Cached) { - m_memory.WriteBlockCached(m_addr, write_data.data(), this->size_bytes()); - } else if constexpr (FLAGS & GuestMemoryFlags::Safe) { - m_memory.WriteBlock(m_addr, write_data.data(), this->size_bytes()); - } else { - m_memory.WriteBlockUnsafe(m_addr, write_data.data(), this->size_bytes()); - } - } - - bool TrySetSpan() noexcept { - if (u8* ptr = m_memory.GetSpan(m_addr, this->size_bytes()); ptr) { - m_data_span = {reinterpret_cast<T*>(ptr), this->size()}; - m_span_valid = true; - return true; - } - return false; - } - -protected: - bool IsDataCopy() const noexcept { - return m_is_data_copy; - } - - bool AddressChanged() const noexcept { - return m_addr_changed; - } - - M& m_memory; - u64 m_addr{}; - size_t m_size{}; - std::span<T> m_data_span{}; - std::vector<T> m_data_copy{}; - bool m_span_valid{false}; - bool m_is_data_copy{false}; - bool m_addr_changed{false}; -}; - -template <typename M, typename T, GuestMemoryFlags FLAGS> -class GuestMemoryScoped : public GuestMemory<M, T, FLAGS> { -public: - GuestMemoryScoped() = delete; - explicit GuestMemoryScoped(M& memory, u64 addr, std::size_t size, - Common::ScratchBuffer<T>* backup = nullptr) - : GuestMemory<M, T, FLAGS>(memory, addr, size, backup) { - if constexpr (!(FLAGS & GuestMemoryFlags::Read)) { - if (!this->TrySetSpan()) { - if (backup) { - this->m_data_span = *backup; - this->m_span_valid = true; - this->m_is_data_copy = true; - } - } - } - } - - ~GuestMemoryScoped() { - if constexpr (FLAGS & GuestMemoryFlags::Write) { - if (this->size() == 0) [[unlikely]] { - return; - } - - if (this->AddressChanged() || this->IsDataCopy()) { - ASSERT(this->m_span_valid); - if constexpr (FLAGS & GuestMemoryFlags::Cached) { - this->m_memory.WriteBlockCached(this->m_addr, this->data(), this->size_bytes()); - } else if constexpr (FLAGS & GuestMemoryFlags::Safe) { - this->m_memory.WriteBlock(this->m_addr, this->data(), this->size_bytes()); - } else { - this->m_memory.WriteBlockUnsafe(this->m_addr, this->data(), this->size_bytes()); - } - } else if constexpr ((FLAGS & GuestMemoryFlags::Safe) || - (FLAGS & GuestMemoryFlags::Cached)) { - this->m_memory.InvalidateRegion(this->m_addr, this->size_bytes()); - } - } - } -}; -} // namespace - -template <typename T, GuestMemoryFlags FLAGS> -using CpuGuestMemory = GuestMemory<Memory, T, FLAGS>; -template <typename T, GuestMemoryFlags FLAGS> -using CpuGuestMemoryScoped = GuestMemoryScoped<Memory, T, FLAGS>; -template <typename T, GuestMemoryFlags FLAGS> -using GpuGuestMemory = GuestMemory<Tegra::MemoryManager, T, FLAGS>; -template <typename T, GuestMemoryFlags FLAGS> -using GpuGuestMemoryScoped = GuestMemoryScoped<Tegra::MemoryManager, T, FLAGS>; } // namespace Core::Memory |