2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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11 * notice, this list of conditions and the following disclaimer in the
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
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32 static char sccsid[] = "@(#)lookup.c 8.1 (Berkeley) 6/6/93";
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
42 * look up an address in a sorted-by-address namelist
43 * this deals with misses by mapping them to the next lower
47 nllookup(unsigned long address)
57 for ( low = 0 , high = nname - 1 ; low != high ; ) {
61 middle = ( high + low ) >> 1;
62 if ( nl[ middle ].value <= address && nl[ middle+1 ].value > address ) {
64 if ( debug & LOOKUPDEBUG ) {
65 printf( "[nllookup] %d (%d) probes\n" , probes , nname-1 );
69 if (nl[middle].name[0] == '$' &&
70 nl[middle-1].value == nl[middle].value)
76 if ( nl[ middle ].value > address ) {
83 if ( debug & LOOKUPDEBUG ) {
84 fprintf( stderr , "[nllookup] (%d) binary search fails\n" ,
92 arclookup(nltype *parentp, nltype *childp)
96 if ( parentp == 0 || childp == 0 ) {
97 fprintf( stderr, "[arclookup] parentp == 0 || childp == 0\n" );
101 if ( debug & LOOKUPDEBUG ) {
102 printf( "[arclookup] parent %s child %s\n" ,
103 parentp -> name , childp -> name );
106 for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
108 if ( debug & LOOKUPDEBUG ) {
109 printf( "[arclookup]\t arc_parent %s arc_child %s\n" ,
110 arcp -> arc_parentp -> name ,
111 arcp -> arc_childp -> name );
114 if ( arcp -> arc_childp == childp ) {