tools/io.hpp

#pragma once

#include "internal/sys.hpp"
#include "io_interface.hpp"

#include <cstdint>
#include <string>

namespace host_tool
{

class DevMemDevice : public HostIoInterface
{
  public:
    explicit DevMemDevice(const internal::Sys* sys = &internal::sys_impl) :
        sys(sys)
    {}

    ~DevMemDevice() = default;

    /* Don't allow copying, assignment or move assignment, only moving. */
    DevMemDevice(const DevMemDevice&) = delete;
    DevMemDevice& operator=(const DevMemDevice&) = delete;
    DevMemDevice(DevMemDevice&&) = default;
    DevMemDevice& operator=(DevMemDevice&&) = delete;

    bool read(const std::size_t offset, const std::size_t length,
              void* const destination) override;

    bool write(const std::size_t offset, const std::size_t length,
               const void* const source) override;

  private:
    static const std::string devMemPath;
    int devMemFd = -1;
    void* devMemMapped = nullptr;
    const internal::Sys* sys;
};

class PpcMemDevice : public HostIoInterface
{
  public:
    explicit PpcMemDevice(const std::string& ppcMemPath,
                          const internal::Sys* sys = &internal::sys_impl) :
        ppcMemPath(ppcMemPath), sys(sys)
    {}

    ~PpcMemDevice() override;

    /* Don't allow copying or assignment, only moving. */
    PpcMemDevice(const PpcMemDevice&) = delete;
    PpcMemDevice& operator=(const PpcMemDevice&) = delete;
    PpcMemDevice(PpcMemDevice&&) = default;
    PpcMemDevice& operator=(PpcMemDevice&&) = default;

    bool read(const std::size_t offset, const std::size_t length,
              void* const destination) override;

    bool write(const std::size_t offset, const std::size_t length,
               const void* const source) override;

  private:
    void close();

    int ppcMemFd = -1;
    const std::string ppcMemPath;
    const internal::Sys* sys;
};

} // namespace host_tool