xref: /csrg-svn/sys/tahoe/align/Amovob.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  *	@(#)Amovob.c	7.1 (Berkeley) 12/06/90
11*45760Sbostic  */
1229617Ssam 
1345699Sbostic #include "align.h"
movob_op(infop)1429617Ssam movob_op(infop)
1529617Ssam process_info *infop;
1629617Ssam /*
1729617Ssam /*	Move output byte
1829617Ssam /*
1929617Ssam /****************************************/
2029617Ssam {
2129617Ssam 	register	long	Register_12;	/* Has to be first reg ! */
2229617Ssam 	register	long	Register_11;
2329617Ssam 	register	long	Register_10;
2429617Ssam 	register	long	code;
2529617Ssam 
2629617Ssam 
2729617Ssam 	Register_12 = operand(infop,0)->data;
2829617Ssam 	Register_11 = operand(infop,1)->address;
2929617Ssam 	code = writeable(infop, Register_11, 1);
3029617Ssam 	if ( code == TRUE ) {
3129617Ssam 		Register_10=psl;
3229617Ssam 		Set_psl(r10);	/* restore the user psl */
3329617Ssam 		asm ("	movob	r12,(r11)");
3429617Ssam 		asm ("	movpsl	r12");
3529617Ssam 		New_cc (Register_12);
3629617Ssam 	} else exception (infop, ILL_ACCESS, Register_11, code);
3729617Ssam }
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