BSD 4.4 Lite Usr.bin Sources

1 files changed, 115 insertions, 0 deletions

diff --git a/usr.bin/gprof/lookup.c b/usr.bin/gprof/lookup.c
new file mode 100644
index 0000000..d63c13bf
--- /dev/null
+++ b/usr.bin/gprof/lookup.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	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[] = "@(#)lookup.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "gprof.h"
+
+    /*
+     *	look up an address in a sorted-by-address namelist
+     *	    this deals with misses by mapping them to the next lower 
+     *	    entry point.
+     */
+nltype *
+nllookup( address )
+    unsigned long	address;
+{
+    register long	low;
+    register long	middle;
+    register long	high;
+#   ifdef DEBUG
+	register int	probes;
+
+	probes = 0;
+#   endif DEBUG
+    for ( low = 0 , high = nname - 1 ; low != high ; ) {
+#	ifdef DEBUG
+	    probes += 1;
+#	endif DEBUG
+	middle = ( high + low ) >> 1;
+	if ( nl[ middle ].value <= address && nl[ middle+1 ].value > address ) {
+#	    ifdef DEBUG
+		if ( debug & LOOKUPDEBUG ) {
+		    printf( "[nllookup] %d (%d) probes\n" , probes , nname-1 );
+		}
+#	    endif DEBUG
+	    return &nl[ middle ];
+	}
+	if ( nl[ middle ].value > address ) {
+	    high = middle;
+	} else {
+	    low = middle + 1;
+	}
+    }
+#   ifdef DEBUG
+	if ( debug & LOOKUPDEBUG ) {
+	    fprintf( stderr , "[nllookup] (%d) binary search fails\n" ,
+		nname-1 );
+	}
+#   endif DEBUG
+    return 0;
+}
+
+arctype *
+arclookup( parentp , childp )
+    nltype	*parentp;
+    nltype	*childp;
+{
+    arctype	*arcp;
+
+    if ( parentp == 0 || childp == 0 ) {
+	fprintf( stderr, "[arclookup] parentp == 0 || childp == 0\n" );
+	return 0;
+    }
+#   ifdef DEBUG
+	if ( debug & LOOKUPDEBUG ) {
+	    printf( "[arclookup] parent %s child %s\n" ,
+		    parentp -> name , childp -> name );
+	}
+#   endif DEBUG
+    for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
+#	ifdef DEBUG
+	    if ( debug & LOOKUPDEBUG ) {
+		printf( "[arclookup]\t arc_parent %s arc_child %s\n" ,
+			arcp -> arc_parentp -> name ,
+			arcp -> arc_childp -> name );
+	    }
+#	endif DEBUG
+	if ( arcp -> arc_childp == childp ) {
+	    return arcp;
+	}
+    }
+    return 0;
+}