LXR linux/arch/arm/include/asm/pgtable-2level-types.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * arch/arm/include/asm/pgtable-2level-types.h
   4 *
   5 * Copyright (C) 1995-2003 Russell King
   6 */
   7#ifndef _ASM_PGTABLE_2LEVEL_TYPES_H
   8#define _ASM_PGTABLE_2LEVEL_TYPES_H
   9
  10#include <asm/types.h>
  11
  12typedef u32 pteval_t;
  13typedef u32 pmdval_t;
  14
  15#undef STRICT_MM_TYPECHECKS
  16
  17#ifdef STRICT_MM_TYPECHECKS
  18/*
  19 * These are used to make use of C type-checking..
  20 */
  21typedef struct { pteval_t pte; } pte_t;
  22typedef struct { pmdval_t pmd; } pmd_t;
  23typedef struct { pmdval_t pgd[2]; } pgd_t;
  24typedef struct { pteval_t pgprot; } pgprot_t;
  25
  26#define pte_val(x)      ((x).pte)
  27#define pmd_val(x)      ((x).pmd)
  28#define pgd_val(x)      ((x).pgd[0])
  29#define pgprot_val(x)   ((x).pgprot)
  30
  31#define __pte(x)        ((pte_t) { (x) } )
  32#define __pmd(x)        ((pmd_t) { (x) } )
  33#define __pgprot(x)     ((pgprot_t) { (x) } )
  34
  35#else
  36/*
  37 * .. while these make it easier on the compiler
  38 */
  39typedef pteval_t pte_t;
  40typedef pmdval_t pmd_t;
  41typedef pmdval_t pgd_t[2];
  42typedef pteval_t pgprot_t;
  43
  44#define pte_val(x)      (x)
  45#define pmd_val(x)      (x)
  46#define pgd_val(x)      ((x)[0])
  47#define pgprot_val(x)   (x)
  48
  49#define __pte(x)        (x)
  50#define __pmd(x)        (x)
  51#define __pgprot(x)     (x)
  52
  53#endif /* STRICT_MM_TYPECHECKS */
  54
  55#endif  /* _ASM_PGTABLE_2LEVEL_TYPES_H */
  56