/*
	This C language subroutine compares two ranges of
	memory.
	
	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>
	int memcmp(const 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	    	_memcmp;
.GLOBAL	    	___memcmpDD;

_memcmp:
___memcmpDD:	
compare_core:	R12=PASS R12, R1=dma_i;		/*Test for zero count*/

		IF LE JUMP (PC, restore_state) (DB);
		R0=R0-R0, FETCH_RETURN		/*Return a 0 if we jump*/
		dma_i=R4;			/*Point to s1		*/

		dm_ptr=R8;			/*point to s2*/

		DO dm_dm UNTIL NE;		/*loop n-1 times or until != */
		   IF EQ R2=DM(dma_i,dm_1);
		   IF EQ R12=R12-1, R4=DM(dm_ptr, dm_1);
dm_dm:		   IF GE R0=R2-R4;

restore_state:	dma_i=R1;
		RETURN (DB);
		RESTORE_STACK
		RESTORE_FRAME
.ENDSEG;