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 * @(#)Abbc.c 7.1 (Berkeley) 12/06/90 11 */ 12 13 #include "align.h" 14 bbc(infop) process_info *infop; 15 /* 16 /* Branch on bit clear. 17 /* 18 /********************************/ 19 { 20 register int position,base, new_address; 21 22 position = operand(infop,0)-> data & 0x1f; 23 base = operand(infop,1)->data; 24 new_address = operand(infop,2) -> address; 25 negative_0; zero_1; overflow_0; carry_1; 26 if ( !(base & 1 << position) ) pc = new_address; 27 } 28