blob: 9707a0c65e15b56e6bbde4ec0ebace3110fee4df (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
#ifndef RTEMS_VM_OBJCT_H
#define RTEMS_VM_OBJCT_H
/*
* Helpers to perform conversion between vm_object page indexes and offsets.
* IDX_TO_OFF() converts an index into an offset.
* OFF_TO_IDX() converts an offset into an index.
* OBJ_MAX_SIZE specifies the maximum page index corresponding to the
* maximum unsigned offset.
*/
#define IDX_TO_OFF(idx) (((vm_ooffset_t)(idx)) << PAGE_SHIFT)
#define OFF_TO_IDX(off) ((vm_pindex_t)(((vm_ooffset_t)(off)) >> PAGE_SHIFT))
#define UOFF_TO_IDX(off) OFF_TO_IDX(off)
#define OBJ_MAX_SIZE (OFF_TO_IDX(UINT64_MAX) + 1)
#endif
|
