// Filename 		: DCACHE.C
// Coded by 		: Scott Evans
// Created/Modified : 31/7/98
// Description		: Code to manage D-cache allocation


#include <dcache.h>


u_byte *dcache_ptr;


// Function			: InitDCachePointer()
// Coded by			: Scott Evans
// Created/Modified	: 31/7/98
// Description		: Initialise a pointer to start of the D-cache

// Parameters		: None

// Returns			: None

// Notes			: None


void InitDCachePointer(void)
{
	dcache_ptr=(u_byte *)DCACHE_START;
	printf("InitDCachePointer : Completed\n");
}


// Function			: AllocateDCache()
// Coded by			: Scott Evans
// Created/Modified	: 31/7/98
// Description		: Allocate part of D-cache to a variable

// Parameters		: size - size of variable

// Returns			: Pointer to allocated area, 0 for error

// Notes			: None


void *AllocateDCache(u_long size)
{
	void *p;

	// Can we fit it into D-cache

	if(dcache_ptr+size<(u_byte *)(DCACHE_START+DCACHE_SIZE))
	{
		// Allocate part of D-cache

		p=dcache_ptr;
		dcache_ptr+=size;

		return(p);
	}

	// No room left

	printf("AllocateDCache : Failed\n");
	return(0);
}