2 * Copyright (c) 1983 Regents of the University of California.
5 * Redistribution and use in source and binary forms are permitted
6 * provided that: (1) source distributions retain this entire copyright
7 * notice and comment, and (2) distributions including binaries display
8 * the following acknowledgement: ``This product includes software
9 * developed by the University of California, Berkeley and its contributors''
10 * in the documentation or other materials provided with the distribution
11 * and in all advertising materials mentioning features or use of this
12 * software. Neither the name of the University nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 static char sccsid[] = "@(#)tahoe.c 1.5 (Berkeley) 6/1/90";
27 * a namelist entry to be the child of indirect callf
29 nltype indirectchild = {
30 "(*)" , /* the name */
31 (unsigned long) 0 , /* the pc entry point */
32 (unsigned long) 0 , /* entry point aligned to histogram */
33 (double) 0.0 , /* ticks in this routine */
34 (double) 0.0 , /* cumulative ticks in children */
35 (long) 0 , /* how many times called */
36 (long) 0 , /* how many calls to self */
37 (double) 1.0 , /* propagation fraction */
38 (double) 0.0 , /* self propagation time */
39 (double) 0.0 , /* child propagation time */
40 (bool) 0 , /* print flag */
41 (int) 0 , /* index in the graph list */
42 (int) 0 , /* graph call chain top-sort order */
43 (int) 0 , /* internal number of cycle on */
44 (struct nl *) &indirectchild , /* pointer to head of cycle */
45 (struct nl *) 0 , /* pointer to next member of cycle */
46 (arctype *) 0 , /* list of caller arcs */
47 (arctype *) 0 /* list of callee arcs */
52 iscall (unsigned char *ip)
58 if (*ip == 0xeb || *ip == 0x9a)
63 findcall( parentp , p_lowpc , p_highpc )
65 unsigned long p_lowpc;
66 unsigned long p_highpc;
68 unsigned char *instructp;
73 if ( textspace == 0 ) {
76 if ( p_lowpc < s_lowpc ) {
79 if ( p_highpc > s_highpc ) {
83 if ( debug & CALLDEBUG ) {
84 printf( "[findcall] %s: 0x%x to 0x%x\n" ,
85 parentp -> name , p_lowpc , p_highpc );
88 for ( instructp = textspace + p_lowpc ;
89 instructp < textspace + p_highpc ;
90 instructp += length ) {
92 if ( iscall (instructp) ) {
94 if ( debug & CALLDEBUG ) {
95 printf( "[findcall]\t0x%x:callf" , instructp - textspace );
100 * regular pc relative addressing
101 * check that this is the address of
104 destpc = ( (unsigned long)instructp + 5 - (unsigned long) textspace);
105 if ( destpc >= s_lowpc && destpc <= s_highpc ) {
106 childp = nllookup( destpc );
108 if ( debug & CALLDEBUG ) {
109 printf( "[findcall]\tdestpc 0x%x" , destpc );
110 printf( " childp->name %s" , childp -> name );
111 printf( " childp->value 0x%x\n" ,
115 if ( childp -> value == destpc ) {
119 addarc( parentp , childp , (long) 0 );
120 length += 4; /* constant lengths */
127 * it looked like a callf,
128 * but it wasn't to anywhere.
132 * something funny going on.
135 if ( debug & CALLDEBUG ) {
136 printf( "[findcall]\tbut it's a botch\n" );