xref: /original-bsd/sys/tahoe/align/Ashll.c (revision e1db577d)
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  *	@(#)Ashll.c	7.1 (Berkeley) 12/06/90
11  */
12 
13 #include "align.h"
14 
15 shll(infop)	process_info *infop;
16 /*
17 /*	Shift logical left (longword).
18 /*	Checks for overflow.
19 /*
20 /*******************************/
21 {
22 	register	long	Register_12;	/* Has to be first reg ! */
23 	register	long	Register_11;
24 	register	long	Register_10;
25 
26 	Register_12 = operand(infop,0)->data;
27 	Register_11 = operand(infop,1)->data;
28 	Register_10 = psl;
29 	Set_psl(r10);	/*save the orig CC bits of the psl */
30 	asm("	shll	r12,r11,r10");
31 	asm("	movpsl	r12");
32 	New_cc (Register_12);
33 	write_back (infop, Register_10, operand(infop,2));
34 }
35