minix/servers/vm/arch/earm/pagetable.h
Ben Gras 0022ee2cb5 VM: ARM/I386 PDE/PTE macro unification
. further reduces special cases in pagetable.c

Change-Id: Ifd7dd9ee10ca618a47bb4a372467205fbe6da90e
2013-03-14 13:55:04 +00:00

52 lines
1.6 KiB
C

#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
#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
/* 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)
#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))
#define VM_PAGE_SIZE ARM_PAGE_SIZE
/* virtual address -> pde, pte macros */
#define ARCH_VM_PTE(v) ARM_VM_PTE(v)
#define ARCH_VM_PDE(v) ARM_VM_PDE(v)
#endif