cache.h File Reference

ARM9 cache control functions. More...

#include <nds/arm9/cp15.h>
#include <nds/ndstypes.h>

Functions
static void	DC_FlushAll (void)
	Flush the entire data cache to memory.
static void	DC_FlushRange (const void *base, u32 size)
	Flush the data cache of a range of addresses to memory.
static void	DC_InvalidateAll (void)
	Invalidate the entire data cache.
static void	DC_InvalidateRange (const void *base, u32 size)
	Invalidate the data cache of a range of addresses.
static void	IC_InvalidateAll (void)
	Invalidate the entire instruction cache.
static void	IC_InvalidateRange (const void *base, u32 size)
	Invalidate the instruction cache of a range of addresses.

Detailed Description

ARM9 cache control functions.

ARM9 cache defines.

Function Documentation

DC_FlushRange()

static void DC_FlushRange ( const void *  base, u32  size  )

inlinestatic

Flush the data cache of a range of addresses to memory.

Parameters

base	Base address of the region.
size	Size of the region.

DC_InvalidateRange()

static void DC_InvalidateRange ( const void *  base, u32  size  )

inlinestatic

Invalidate the data cache of a range of addresses.

Warning

In debug builds of libnds, this function checks that the base and end addresses are aligned to a cache line.

It's dangerous to invalidate a memory range. If the memory range isn't fully contained inside cache lines, invalidating it will also invalidate the variables around the range the caller wants to invalidate. This may cause unintended effects.

Parameters

base	Base address of the region to invalidate
size	Size of the region to invalidate.

IC_InvalidateRange()

static void IC_InvalidateRange ( const void *  base, u32  size  )

inlinestatic

Invalidate the instruction cache of a range of addresses.

Parameters

base	Base address of the region.
size	Size of the region.