1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)machine.h 5.3 (Berkeley) 01/03/88 7 */ 8 9 /* 10 * Definitions for the machine module. 11 * 12 * This module has the low level machine interface. This consists 13 * mostly of dealing with machine instructions and also setting 14 * and unsetting breakpoints. 15 */ 16 17 ADDRESS pc; /* current program counter */ 18 LINENO curline; /* line number associated with pc */ 19 SYM *curfunc; /* pointer to active function symbol */ 20 21 int setbp(); /* set a breakpoint */ 22 int unsetbp(); /* unset a breakpoint */ 23 BOOLEAN isbperr(); /* test if a breakpoint has occurred */ 24 int printerror(); /* print out an execution error message */ 25 ADDRESS nextaddr(); /* address of next line to be executed */ 26 BOOLEAN isendofproc(); /* test if address is at end of procedure */ 27 int printinst(), printninst(); /* print the instruction at a given address */ 28 int printdata(), printndata(); /* print the contents of a given data address */ 29