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#ifndef KMI_RISCV_PTE_H
#define KMI_RISCV_PTE_H
/**
* Get page table entry physical page number.
*
* @param pte Page table entry.
* @return Corresponding physical page number.
*/
#define pte_ppn(pte) (((pm_t)(pte)) >> 10)
/**
* Get page table entry flags.
*
* @param pte Page table entry.
* @return Corresponding flags.
*/
#define pte_flags(pte) (((pm_t)(pte)) & 0xff)
/**
* Convert physical memory address to page table entry.
*
* @param p Physical memory address.
* @param f Flags to use.
* @return Corresponding page table entry.
*/
#define to_pte(p, f) ((((p) >> page_shift()) << 10) | (f))
/**
* Get physical address in page table entry.
*
* @param pte Page table entry.
* @return Corresponding physical address.
*/
#define pte_paddr(pte) (pte_ppn(pte) << page_shift())
/**
* Get virtual address in page table entry.
*
* @param pte Page table entry.
* @return Corresponding virtual address.
*/
#define pte_addr(pte) __va(pte_paddr(pte))
/**
* Virtual memory address to page order index.
*
* @param a Virtual address.
* @param o Order of page.
* @return Corresponding page index.
*/
#define vm_to_index(a, o) (pm_to_index(a, o))
/**
* Check if page table entry is active.
*
* @param pte Page table entry.
* @return \c 0 if entry is not active, non-zero otherwise.
*/
#define is_active(pte) (pte_flags(pte) &VM_V)
/**
* Check if page table entry is a leaf.
*
* @param pte Page table entry.
* @return \c 0 if entry is not leaf, non-zero otherwise.
*/
#define is_leaf(pte) (is_active(pte) && (pte_flags(pte) & ~VM_V))
/**
* Check if page table entry is a branch.
*
* @param pte Page table entry.
* @return \c 0 if entry is not branch, non-zero otherwise.
*/
#define is_branch(pte) (is_active(pte) && !(pte_flags(pte) & ~VM_V))
#endif /* KMI_RISCV_PTE_H */
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