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/** @file segment.H
* @brief Contains the definition of the virtual Segment class.
*/
#ifndef __KERNEL_SEGMENT_H
#define __KERNEL_SEGMENT_H
#include <kernel/task.H>
/** @class Segment
* @brief Virtual segment class to handle virtual memory management within
* a 1TB segment.
*/
class Segment
{
public:
/**
* @brief Constructor.
* @param[in] i_baseAddr - Base [virtual] address of this segment.
*/
explicit Segment(uint64_t i_baseAddr) : iv_baseAddress(i_baseAddr) {};
/**
* @brief Destructor.
* No additional action necessary.
*/
virtual ~Segment() {};
/**
* @brief Responsible for handling page faults within the segment.
*
* @param[in] i_task - Task causing the page fault.
* @param[in] i_addr - Effective address accessed to cause fault.
*
* @return true - Page fault was successfully handled.
*
* If the page fault is not successfully handled the expectation is
* that the VMM will perform appropriate action, such as killing the
* task.
*/
virtual bool handlePageFault(task_t* i_task, uint64_t i_addr) = 0;
/**
* @brief Get the base address of this segment.
* @return Base address (as uint64_t).
*/
uint64_t getBaseAddress() const { return iv_baseAddress; };
protected:
/** The base address of the segment. */
const uint64_t iv_baseAddress;
};
#endif
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