Address Bits

Definitions and masks for address pages. More...

Macros
#define	MMU_TOP_SHIFT   21
	Top-level shift.
#define	MMU_TOP_BITS   10
	Top-level bits.
#define	MMU_TOP_MASK   ((1 << MMU_TOP_BITS) - 1)
	Top-level mask.
#define	MMU_BOT_SHIFT   12
	Bottom shift.
#define	MMU_BOT_BITS   9
	Bottom bits.
#define	MMU_BOT_MASK   ((1 << MMU_BOT_BITS) - 1)
	Bottom mask.
#define	MMU_IND_SHIFT   0
	Index shift.
#define	MMU_IND_BITS   12
	Index bits.
#define	MMU_IND_MASK   ((1 << MMU_IND_BITS) - 1)
	Index mask.

Detailed Description

Definitions and masks for address pages.

The MMU code uses these to determine the page of a request.

Macro Definition Documentation

MMU_BOT_BITS

#define MMU_BOT_BITS   9

Bottom bits.

MMU_BOT_MASK

#define MMU_BOT_MASK   ((1 << MMU_BOT_BITS) - 1)

Bottom mask.

MMU_BOT_SHIFT

#define MMU_BOT_SHIFT   12

Bottom shift.

MMU_IND_BITS

#define MMU_IND_BITS   12

Index bits.

MMU_IND_MASK

#define MMU_IND_MASK   ((1 << MMU_IND_BITS) - 1)

Index mask.

MMU_IND_SHIFT

#define MMU_IND_SHIFT   0

Index shift.

MMU_TOP_BITS

#define MMU_TOP_BITS   10

Top-level bits.

MMU_TOP_MASK

#define MMU_TOP_MASK   ((1 << MMU_TOP_BITS) - 1)

Top-level mask.

MMU_TOP_SHIFT

#define MMU_TOP_SHIFT   21

Top-level shift.