projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3cd5310a DF |
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 5.1 (Berkeley) %G% | |
| 7 | */ | |
| 2eef2279 ML |
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 | short errnum; /* current error number */ | |
| 21 | ||
| 22 | setbp(); /* set a breakpoint */ | |
| 23 | unsetbp(); /* unset a breakpoint */ | |
| 24 | BOOLEAN isbperr(); /* test if a breakpoint has occurred */ | |
| 25 | printerror(); /* print out an execution error message */ | |
| 26 | ADDRESS nextaddr(); /* address of next line to be executed */ | |
| 514bd573 | 27 | BOOLEAN isendofproc(); /* test if address is at end of procedure */ |
| 2eef2279 ML |
28 | printinst(), printninst(); /* print the instruction at a given address */ |
| 29 | printdata(), printndata(); /* print the contents of a given data address */ |