xref: /original-bsd/sys/tahoe/align/Ashrl.c (revision 3588a932)
1 /*-
2  * Copyright (c) 1986 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Computer Consoles Inc.
7  *
8  * %sccs.include.redist.c%
9  *
10  *	@(#)Ashrl.c	7.1 (Berkeley) 12/06/90
11  */
12 
13 #include "align.h"
14 shrl(infop)	process_info *infop;
15 /*
16 /*	Shift logical right (longword).
17 /*
18 /*******************************/
19 {
20 	register	long	Register_12;	/* Has to be first reg ! */
21 	register	long	Register_11;
22 	register	long	Register_10;
23 
24 	Register_12 = operand(infop,0)->data;
25 	Register_11 = operand(infop,1)->data;
26 	Register_10=psl;
27 	Set_psl(r10);	/* restore the user psl */
28 	asm ("	shrl	r12,r11,r10");
29 	asm ("	movpsl	r12");
30 	New_cc (Register_12);
31 	write_back (infop, Register_10, operand(infop,2));
32 }
33