1*b65ab6e5Sbostic /*- 2*b65ab6e5Sbostic * Copyright (c) 1986 The Regents of the University of California. 3*b65ab6e5Sbostic * All rights reserved. 4*b65ab6e5Sbostic * 5*b65ab6e5Sbostic * This code is derived from software contributed to Berkeley by 6*b65ab6e5Sbostic * Computer Consoles Inc. 7*b65ab6e5Sbostic * 8*b65ab6e5Sbostic * %sccs.include.redist.c% 9*b65ab6e5Sbostic * 10*b65ab6e5Sbostic * @(#)Amovzb.c 7.1 (Berkeley) 12/06/90 11*b65ab6e5Sbostic */ 12675c637bSsam 13f5878f6dSbostic #include "align.h" movzb(infop)14675c637bSsammovzb(infop) process_info *infop; 15675c637bSsam /* 16675c637bSsam /* Move byte to word or longword, zero-extended 17675c637bSsam /* 18675c637bSsam /****************************************/ 19675c637bSsam { 20675c637bSsam register long result; 21675c637bSsam register struct oprnd *oppnt; 22675c637bSsam 23675c637bSsam oppnt = operand(infop,0); 24675c637bSsam result = oppnt->data; 25675c637bSsam negative_0; 26675c637bSsam if (result == 0 ) zero_1 ; else zero_0; 27675c637bSsam overflow_0; carry_1; 28675c637bSsam if ((oppnt->mode & 0xff) == Dir) 29675c637bSsam write_back (infop, result , operand(infop,1) ); 30675c637bSsam else write_back (infop, result & 0xff, operand(infop,1) ); 31675c637bSsam } 32