xref: /csrg-svn/sys/tahoe/align/Ashrl.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  *	@(#)Ashrl.c	7.1 (Berkeley) 12/06/90
11*45760Sbostic  */
1229634Ssam 
1345699Sbostic #include "align.h"
shrl(infop)1429634Ssam shrl(infop)	process_info *infop;
1529634Ssam /*
1629634Ssam /*	Shift logical right (longword).
1729634Ssam /*
1829634Ssam /*******************************/
1929634Ssam {
2029634Ssam 	register	long	Register_12;	/* Has to be first reg ! */
2129634Ssam 	register	long	Register_11;
2229634Ssam 	register	long	Register_10;
2329634Ssam 
2429634Ssam 	Register_12 = operand(infop,0)->data;
2529634Ssam 	Register_11 = operand(infop,1)->data;
2629634Ssam 	Register_10=psl;
2729634Ssam 	Set_psl(r10);	/* restore the user psl */
2829634Ssam 	asm ("	shrl	r12,r11,r10");
2929634Ssam 	asm ("	movpsl	r12");
3029634Ssam 	New_cc (Register_12);
3129634Ssam 	write_back (infop, Register_10, operand(infop,2));
3229634Ssam }
33