xref: /csrg-svn/sys/tahoe/align/Amull2.c (revision 45760)
1*45760Sbostic /*-
2*45760Sbostic  * Copyright (c) 1986 The Regents of the University of California.
3*45760Sbostic  * All rights reserved.
4*45760Sbostic  *
5*45760Sbostic  * This code is derived from software contributed to Berkeley by
6*45760Sbostic  * Computer Consoles Inc.
7*45760Sbostic  *
8*45760Sbostic  * %sccs.include.redist.c%
9*45760Sbostic  *
10*45760Sbostic  *	@(#)Amull2.c	7.1 (Berkeley) 12/06/90
11*45760Sbostic  */
1229621Ssam 
1345699Sbostic #include "align.h"
1429621Ssam int	zzz1,zzz2,zzz3,zzz4,zzz5;
mull2(infop)1529621Ssam mull2(infop)	process_info *infop;
1629621Ssam /*
1729621Ssam /*	Multiply longwords, 2 operands.
1829621Ssam /*
1929621Ssam /*****************************************/
2029621Ssam {
2129621Ssam 	register	long	Register_12;	/* Has to be first reg ! */
2229621Ssam 	register	long	result, data0, data1;
2329621Ssam 
2429621Ssam 	data0 = operand(infop,0)->data;
2529621Ssam 	data1 = operand(infop,1)->data;
2629621Ssam 	Register_12=psl;
2729621Ssam 	Set_psl(r12);	/* restore the user psl */
2829621Ssam 	result = data0 * data1;
2929621Ssam 	asm("movpsl	r12");
3029621Ssam 	New_cc (Register_12);
3129621Ssam 	write_back (infop,result, operand(infop,1) );
3229621Ssam }
33