mmio_accessor.hpp

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#pragma once
 
#include <cstddef>
#include <cstdint>
 
struct MmioAccessor {
  template <typename T>
  [[nodiscard]] auto Read(size_t offset) const -> T {
    return *reinterpret_cast<volatile T*>(base + offset);
  }
 
  template <typename T>
  auto Write(size_t offset, T val) const -> void {
    *reinterpret_cast<volatile T*>(base + offset) = val;
  }
 
  uint64_t base{0};
 
  explicit MmioAccessor(uint64_t base_addr = 0) : base(base_addr) {}
  MmioAccessor(const MmioAccessor&) = default;
  MmioAccessor(MmioAccessor&&) = default;
  auto operator=(const MmioAccessor&) -> MmioAccessor& = default;
  auto operator=(MmioAccessor&&) -> MmioAccessor& = default;
  ~MmioAccessor() = default;
};