xref: /csrg-svn/sys/tahoe/align/Ashar.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  *	@(#)Ashar.c	7.1 (Berkeley) 12/06/90
11*45760Sbostic  */
1229632Ssam 
1345699Sbostic #include "align.h"
shar(infop)1429632Ssam shar(infop)	process_info *infop;
1529632Ssam /*
1629632Ssam /*	Shift arithmetic right (longword).
1729632Ssam /*
1829632Ssam /*******************************/
1929632Ssam {
2029632Ssam 	register	long	Register_12;	/* Has to be first reg ! */
2129632Ssam 	register	long	Register_11;
2229632Ssam 	register	long	Register_10;
2329632Ssam 
2429632Ssam 	Register_12 = operand(infop,0)->data;
2529632Ssam 	Register_11 = operand(infop,1)->data;
2629632Ssam 	Register_10=psl;
2729632Ssam 	Set_psl(r10);	/* restore the user psl */
2829632Ssam 	asm ("	shar	r12,r11,r10");
2929632Ssam 	asm ("	movpsl	r12");
3029632Ssam 	New_cc (Register_12);
3129632Ssam 	write_back (infop, Register_10, operand(infop,2));
3229632Ssam }
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