usr/src/usr.bin/pascal/pdx/breakpoint/fixbps.c

/*-
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)fixbps.c    5.2 (Berkeley) 4/16/91";
#endif /* not lint */

/*
 * fix up breakpoint information before continuing execution
 *
 * It's necessary to destroy breakpoints that were created temporarily
 * and still exist because the program terminated abnormally.
 */

#include "defs.h"
#include "breakpoint.h"
#include "bp.rep"

fixbps()
{
        register BPINFO *p, *last, *next;

        last = NIL;
        p = bphead;
        while (p != NIL) {
                next = p->bpnext;
                switch(p->bptype) {
                        case ALL_OFF:
                                if (p->bpline >= 0) {
                                        --tracing;
                                } else {
                                        --inst_tracing;
                                }
                                if (p->bpcond != NIL) {
                                        delcond(TRPRINT, p->bpcond);
                                }
                                goto delete;

                        case STOP_OFF:
                                var_tracing--;
                                delcond(TRSTOP, p->bpcond);
                                goto delete;

                        case TERM_OFF:
                                --var_tracing;
                                delvar(TRPRINT, p->bpnode, p->bpcond);
                                goto delete;

                        case CALL:
                        case RETURN:
                        case BLOCK_OFF:
                        case CALLPROC:
                        case END_BP:

                        delete:
                                if (last == NIL) {
                                        bphead = next;
                                } else {
                                        last->bpnext = next;
                                }
                                dispose(p);
                                break;

                        default:
                                last = p;
                                break;
                }
                p = next;
        }
        tracing = 0;
        var_tracing = 0;
        inst_tracing = 0;
        trfree();
        condfree();
}