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Annotation of 43BSDReno/pgrm/pascal/pdx/machine.h, revision 1.1.1.1

1.1       root        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) 1/3/88
                      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 */

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