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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef _ASM_GENERIC_PGTABLE_H
     13 #define _ASM_GENERIC_PGTABLE_H
     14 
     15 #ifndef __HAVE_ARCH_PTEP_ESTABLISH
     16 
     17 #ifndef __HAVE_ARCH_SET_PTE_ATOMIC
     18 #define ptep_establish(__vma, __address, __ptep, __entry)  do {   set_pte_at((__vma)->vm_mm, (__address), __ptep, __entry);   flush_tlb_page(__vma, __address);  } while (0)
     19 #else
     20 #define ptep_establish(__vma, __address, __ptep, __entry)  do {   set_pte_atomic(__ptep, __entry);   flush_tlb_page(__vma, __address);  } while (0)
     21 #endif
     22 #endif
     23 
     24 #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
     25 
     26 #define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty)  do {   set_pte_at((__vma)->vm_mm, (__address), __ptep, __entry);   flush_tlb_page(__vma, __address);  } while (0)
     27 #endif
     28 
     29 #ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
     30 #define ptep_test_and_clear_young(__vma, __address, __ptep)  ({   pte_t __pte = *(__ptep);   int r = 1;   if (!pte_young(__pte))   r = 0;   else   set_pte_at((__vma)->vm_mm, (__address),   (__ptep), pte_mkold(__pte));   r;  })
     31 #endif
     32 
     33 #ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
     34 #define ptep_clear_flush_young(__vma, __address, __ptep)  ({   int __young;   __young = ptep_test_and_clear_young(__vma, __address, __ptep);   if (__young)   flush_tlb_page(__vma, __address);   __young;  })
     35 #endif
     36 
     37 #ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
     38 #define ptep_test_and_clear_dirty(__vma, __address, __ptep)  ({   pte_t __pte = *__ptep;   int r = 1;   if (!pte_dirty(__pte))   r = 0;   else   set_pte_at((__vma)->vm_mm, (__address), (__ptep),   pte_mkclean(__pte));   r;  })
     39 #endif
     40 
     41 #ifndef __HAVE_ARCH_PTEP_CLEAR_DIRTY_FLUSH
     42 #define ptep_clear_flush_dirty(__vma, __address, __ptep)  ({   int __dirty;   __dirty = ptep_test_and_clear_dirty(__vma, __address, __ptep);   if (__dirty)   flush_tlb_page(__vma, __address);   __dirty;  })
     43 #endif
     44 
     45 #ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR
     46 #define ptep_get_and_clear(__mm, __address, __ptep)  ({   pte_t __pte = *(__ptep);   pte_clear((__mm), (__address), (__ptep));   __pte;  })
     47 #endif
     48 
     49 #ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
     50 #define ptep_get_and_clear_full(__mm, __address, __ptep, __full)  ({   pte_t __pte;   __pte = ptep_get_and_clear((__mm), (__address), (__ptep));   __pte;  })
     51 #endif
     52 
     53 #ifndef __HAVE_ARCH_PTE_CLEAR_FULL
     54 #define pte_clear_full(__mm, __address, __ptep, __full)  do {   pte_clear((__mm), (__address), (__ptep));  } while (0)
     55 #endif
     56 
     57 #ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
     58 #define ptep_clear_flush(__vma, __address, __ptep)  ({   pte_t __pte;   __pte = ptep_get_and_clear((__vma)->vm_mm, __address, __ptep);   flush_tlb_page(__vma, __address);   __pte;  })
     59 #endif
     60 
     61 #ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
     62 struct mm_struct;
     63 #endif
     64 #ifndef __HAVE_ARCH_PTE_SAME
     65 #define pte_same(A,B) (pte_val(A) == pte_val(B))
     66 #endif
     67 #ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
     68 #define page_test_and_clear_dirty(page) (0)
     69 #define pte_maybe_dirty(pte) pte_dirty(pte)
     70 #else
     71 #define pte_maybe_dirty(pte) (1)
     72 #endif
     73 #ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
     74 #define page_test_and_clear_young(page) (0)
     75 #endif
     76 #ifndef __HAVE_ARCH_PGD_OFFSET_GATE
     77 #define pgd_offset_gate(mm, addr) pgd_offset(mm, addr)
     78 #endif
     79 #ifndef __HAVE_ARCH_LAZY_MMU_PROT_UPDATE
     80 #define lazy_mmu_prot_update(pte) do { } while (0)
     81 #endif
     82 #ifndef __HAVE_ARCH_MOVE_PTE
     83 #define move_pte(pte, prot, old_addr, new_addr) (pte)
     84 #endif
     85 #define pgd_addr_end(addr, end)  ({ unsigned long __boundary = ((addr) + PGDIR_SIZE) & PGDIR_MASK;   (__boundary - 1 < (end) - 1)? __boundary: (end);  })
     86 #ifndef pud_addr_end
     87 #define pud_addr_end(addr, end)  ({ unsigned long __boundary = ((addr) + PUD_SIZE) & PUD_MASK;   (__boundary - 1 < (end) - 1)? __boundary: (end);  })
     88 #endif
     89 #ifndef pmd_addr_end
     90 #define pmd_addr_end(addr, end)  ({ unsigned long __boundary = ((addr) + PMD_SIZE) & PMD_MASK;   (__boundary - 1 < (end) - 1)? __boundary: (end);  })
     91 #endif
     92 #ifndef __ASSEMBLY__
     93 
     94 #endif
     95 #endif
     96