/*
	This C language subroutine copies one range of 
	memory into another.
	
	The Run Time Library for the C Language.

	Gordon A. Sterling	(617) 461 - 3076
	DSP Development Tools Engineering

	Created on 4/30/90
	Updated on 5/94 by AS
	Updated on 2/95 by AS - separated polymorphic functions

	#include <string.h>					<Header>
	void *memcpy(void *s1, const void *s2, size_t size);	<Prototype>

*/

#include "lib_glob.h"
#include "str_glob.h"

.SEGMENT/CODE	Code_Space_Name;
.FILE 		RTL_FILENAME;

.GLOBAL	    _memcpy;
.GLOBAL	    ___memcpyDD;

_memcpy:
___memcpyDD:	
copy_core:	R12=PASS R12, R1=dma_i;	/*Test for zero input*/

		IF EQ JUMP (PC, restore_state) (DB);
		FETCH_RETURN
dm_to_dm_copy:	dm_ptr=R8;			/*Point to input*/
		dma_i=R4;			/*Point to output*/

		LCNTR=R12, DO dm_dm UNTIL LCE;	/*Loop n times*/
		    R2=DM(dm_ptr,1);
dm_dm:		    DM(dma_i,1)=R2;

restore_state:	R0=PASS R4, dma_i=R1;
		RETURN (DB);
		RESTORE_STACK
		RESTORE_FRAME

.ENDSEG;