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6514d56158
- Refactor the libio interface - Move syscalls into an rtemsbsd location - Provide a root directory mount point Update #4475
17 lines
576 B
C
17 lines
576 B
C
#ifndef RTEMS_VM_OBJCT_H
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#define RTEMS_VM_OBJCT_H
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/*
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* Helpers to perform conversion between vm_object page indexes and offsets.
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* IDX_TO_OFF() converts an index into an offset.
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* OFF_TO_IDX() converts an offset into an index.
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* OBJ_MAX_SIZE specifies the maximum page index corresponding to the
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* maximum unsigned offset.
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*/
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#define IDX_TO_OFF(idx) (((vm_ooffset_t)(idx)) << PAGE_SHIFT)
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#define OFF_TO_IDX(off) ((vm_pindex_t)(((vm_ooffset_t)(off)) >> PAGE_SHIFT))
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#define UOFF_TO_IDX(off) OFF_TO_IDX(off)
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#define OBJ_MAX_SIZE (OFF_TO_IDX(UINT64_MAX) + 1)
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#endif
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