-Move libdriver to lib/ -Install all boot image services on filesystem to aid restartability
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
|
|
#ifndef _PAGETABLE_H
|
|
#define _PAGETABLE_H 1
|
|
|
|
#include <stdint.h>
|
|
#include <machine/vm.h>
|
|
|
|
#include "vm.h"
|
|
|
|
/* An i386 pagetable. */
|
|
typedef struct {
|
|
/* Directory entries in VM addr space - root of page table. */
|
|
u32_t *pt_dir; /* page aligned (I386_VM_DIR_ENTRIES) */
|
|
u32_t pt_dir_phys; /* physical address of pt_dir */
|
|
|
|
/* Pointers to page tables in VM address space. */
|
|
u32_t *pt_pt[I386_VM_DIR_ENTRIES];
|
|
|
|
/* When looking for a hole in virtual address space, start
|
|
* looking here. This is in linear addresses, i.e.,
|
|
* not as the process sees it but the position in the page
|
|
* page table. This is just a hint.
|
|
*/
|
|
u32_t pt_virtop;
|
|
} pt_t;
|
|
|
|
/* Mapping flags. */
|
|
#define PTF_WRITE I386_VM_WRITE
|
|
#define PTF_PRESENT I386_VM_PRESENT
|
|
#define PTF_USER I386_VM_USER
|
|
#define PTF_GLOBAL I386_VM_GLOBAL
|
|
#define PTF_MAPALLOC I386_VM_PTAVAIL1 /* Page allocated by pt code. */
|
|
|
|
/* For arch-specific PT routines to check if no bits outside
|
|
* the regular flags are set.
|
|
*/
|
|
#define PTF_ALLFLAGS (PTF_WRITE|PTF_PRESENT|PTF_USER|PTF_GLOBAL)
|
|
|
|
#if SANITYCHECKS
|
|
#define PT_SANE(p) { pt_sanitycheck((p), __FILE__, __LINE__); }
|
|
#else
|
|
#define PT_SANE(p)
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|