[unix-history] / usr / src / usr.bin / pascal / pdx / machine.h

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)machine.h	5.3 (Berkeley) %G%
 */

/*
 * Definitions for the machine module.
 *
 * This module has the low level machine interface.  This consists
 * mostly of dealing with machine instructions and also setting
 * and unsetting breakpoints.
 */

ADDRESS pc;			/* current program counter */
LINENO curline;			/* line number associated with pc */
SYM *curfunc;			/* pointer to active function symbol */

int setbp();			/* set a breakpoint */
int unsetbp();			/* unset a breakpoint */
BOOLEAN isbperr();		/* test if a breakpoint has occurred */
int printerror();		/* print out an execution error message */
ADDRESS nextaddr();		/* address of next line to be executed */
BOOLEAN isendofproc();		/* test if address is at end of procedure */
int printinst(), printninst();	/* print the instruction at a given address */
int printdata(), printndata();	/* print the contents of a given data address */
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	*
7d4de299	6	* @(#)machine.h 5.3 (Berkeley) %G%
3cd5310a	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 */
2eef2279	20
7d4de299 KB	21	int setbp(); /* set a breakpoint */
7d4de299 KB	22	int unsetbp(); /* unset a breakpoint */
2eef2279	23	BOOLEAN isbperr(); /* test if a breakpoint has occurred */
7d4de299	24	int printerror(); /* print out an execution error message */
2eef2279	25	ADDRESS nextaddr(); /* address of next line to be executed */
514bd573	26	BOOLEAN isendofproc(); /* test if address is at end of procedure */
7d4de299 KB	27	int printinst(), printninst(); /* print the instruction at a given address */
7d4de299 KB	28	int printdata(), printndata(); /* print the contents of a given data address */