mirror of
https://github.com/drasko/codezero.git
synced 2026-01-12 10:53:16 +01:00
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
|
|
* Generic address space related information.
|
|
*
|
|
* Copyright (C) 2007 Bahadir Balban
|
|
*/
|
|
#ifndef __SPACE_H__
|
|
#define __SPACE_H__
|
|
|
|
/* The flags not embedded in the name behave as expected. E.g USR_RW is also */
|
|
#define MAP_USR_RW_FLAGS 0 /* CB as one would expect */
|
|
#define MAP_USR_RO_FLAGS 1 /* CB as one would expect */
|
|
#define MAP_SVC_RW_FLAGS 2 /* CB as one would expect */
|
|
#define MAP_USR_IO_FLAGS 3 /* Non-CB, RW */
|
|
#define MAP_SVC_IO_FLAGS 4 /* Non-CB, RW */
|
|
|
|
/* Some default aliases */
|
|
#define MAP_USR_DEFAULT_FLAGS MAP_USR_RW_FLAGS
|
|
#define MAP_SVC_DEFAULT_FLAGS MAP_SVC_RW_FLAGS
|
|
#define MAP_IO_DEFAULT_FLAGS MAP_SVC_IO_FLAGS
|
|
|
|
#if defined (__KERNEL__)
|
|
|
|
#include <l4/lib/list.h>
|
|
#include <l4/lib/mutex.h>
|
|
#include INC_SUBARCH(mm.h)
|
|
|
|
/* A simple page table with a reference count */
|
|
struct address_space {
|
|
l4id_t spid;
|
|
struct link list;
|
|
struct mutex lock;
|
|
pgd_table_t *pgd;
|
|
int ktcb_refs;
|
|
};
|
|
|
|
struct address_space *address_space_create(struct address_space *orig);
|
|
void address_space_delete(struct address_space *space);
|
|
void address_space_attach(struct ktcb *tcb, struct address_space *space);
|
|
struct address_space *address_space_find(l4id_t spid);
|
|
void address_space_add(struct address_space *space);
|
|
void address_space_remove(struct address_space *space);
|
|
void address_space_reference_lock();
|
|
void address_space_reference_unlock();
|
|
void init_address_space_list(void);
|
|
int check_access(unsigned long vaddr, unsigned long size,
|
|
unsigned int flags, int page_in);
|
|
#endif
|
|
|
|
#endif /* __SPACE_H__ */
|