minix/servers/vm/arch/arm/pagetable.h

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#ifndef _PAGETABLE_H
#define _PAGETABLE_H 1
#include <stdint.h>
#include <machine/vm.h>
#include "vm.h"
/* Mapping flags. */
#define PTF_WRITE ARM_VM_PTE_RW
#define PTF_READ ARM_VM_PTE_RO
#define PTF_PRESENT ARM_VM_PTE_PRESENT
#define PTF_SUPER ARM_VM_PTE_SUPER
#define PTF_USER ARM_VM_PTE_USER
#define PTF_NOCACHE ARM_VM_PTE_DEVICE
#define PTF_CACHEWB ARM_VM_PTE_WB
#define PTF_CACHEWT ARM_VM_PTE_WT
#define PTF_SHARE ARM_VM_PTE_SHAREABLE
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#define ARCH_VM_DIR_ENTRIES ARM_VM_DIR_ENTRIES
#define ARCH_BIG_PAGE_SIZE ARM_BIG_PAGE_SIZE
#define ARCH_VM_ADDR_MASK ARM_VM_ADDR_MASK
#define ARCH_VM_PDE_MASK ARM_VM_PDE_MASK
#define ARCH_VM_PDE_PRESENT ARM_VM_PDE_PRESENT
#define ARCH_VM_PTE_PRESENT ARM_VM_PTE_PRESENT
#define ARCH_VM_PTE_USER ARM_VM_PTE_USER
#define ARCH_PAGEDIR_SIZE ARM_PAGEDIR_SIZE
#define ARCH_VM_PTE_RW ARM_VM_PTE_RW
#define ARCH_VM_BIGPAGE ARM_VM_BIGPAGE
#define ARCH_VM_PT_ENTRIES ARM_VM_PT_ENTRIES
#define ARCH_VM_PTE_RO ARM_VM_PTE_RO
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/* For arch-specific PT routines to check if no bits outside
* the regular flags are set.
*/
#define PTF_ALLFLAGS (PTF_READ|PTF_WRITE|PTF_PRESENT|PTF_SUPER|PTF_USER|PTF_NOCACHE|PTF_CACHEWB|PTF_CACHEWT|PTF_SHARE)
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#define PFERR_PROT(e) ((ARM_VM_PFE_FS(e) == ARM_VM_PFE_L1PERM) \
|| (ARM_VM_PFE_FS(e) == ARM_VM_PFE_L2PERM))
#define PFERR_NOPAGE(e) (!PFERR_PROT(e))
#define PFERR_WRITE(e) ((e) & ARM_VM_PFE_W)
#define PFERR_READ(e) (!((e) & ARM_VM_PFE_W))
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#define VM_PAGE_SIZE ARM_PAGE_SIZE
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#endif
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