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Annotation of 43BSDTahoe/ucb/pascal/pdx/machine.h, revision 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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