350 lines
9.0 KiB
C
350 lines
9.0 KiB
C
/*
|
|
* 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[] = "@(#)tahoe.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
|
|
#include "gprof.h"
|
|
|
|
/*
|
|
* a namelist entry to be the child of indirect callf
|
|
*/
|
|
nltype indirectchild = {
|
|
"(*)" , /* the name */
|
|
(unsigned long) 0 , /* the pc entry point */
|
|
(unsigned long) 0 , /* entry point aligned to histogram */
|
|
(double) 0.0 , /* ticks in this routine */
|
|
(double) 0.0 , /* cumulative ticks in children */
|
|
(long) 0 , /* how many times called */
|
|
(long) 0 , /* how many calls to self */
|
|
(double) 1.0 , /* propagation fraction */
|
|
(double) 0.0 , /* self propagation time */
|
|
(double) 0.0 , /* child propagation time */
|
|
(bool) 0 , /* print flag */
|
|
(int) 0 , /* index in the graph list */
|
|
(int) 0 , /* graph call chain top-sort order */
|
|
(int) 0 , /* internal number of cycle on */
|
|
(struct nl *) &indirectchild , /* pointer to head of cycle */
|
|
(struct nl *) 0 , /* pointer to next member of cycle */
|
|
(arctype *) 0 , /* list of caller arcs */
|
|
(arctype *) 0 /* list of callee arcs */
|
|
};
|
|
|
|
operandenum
|
|
operandmode( modep )
|
|
unsigned char *modep;
|
|
{
|
|
long usesreg = ((long)*modep) & 0xf;
|
|
|
|
switch ( ((long)*modep) >> 4 ) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
return literal;
|
|
case 4:
|
|
return indexed;
|
|
case 5:
|
|
return reg;
|
|
case 6:
|
|
return regdef;
|
|
case 7:
|
|
return autodec;
|
|
case 8:
|
|
return ( usesreg != 0xe ? autoinc : immediate );
|
|
case 9:
|
|
return ( usesreg != PC ? autoincdef : absolute );
|
|
case 10:
|
|
return ( usesreg != PC ? bytedisp : byterel );
|
|
case 11:
|
|
return ( usesreg != PC ? bytedispdef : bytereldef );
|
|
case 12:
|
|
return ( usesreg != PC ? worddisp : wordrel );
|
|
case 13:
|
|
return ( usesreg != PC ? worddispdef : wordreldef );
|
|
case 14:
|
|
return ( usesreg != PC ? longdisp : longrel );
|
|
case 15:
|
|
return ( usesreg != PC ? longdispdef : longreldef );
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
char *
|
|
operandname( mode )
|
|
operandenum mode;
|
|
{
|
|
|
|
switch ( mode ) {
|
|
case literal:
|
|
return "literal";
|
|
case indexed:
|
|
return "indexed";
|
|
case reg:
|
|
return "register";
|
|
case regdef:
|
|
return "register deferred";
|
|
case autodec:
|
|
return "autodecrement";
|
|
case autoinc:
|
|
return "autoincrement";
|
|
case autoincdef:
|
|
return "autoincrement deferred";
|
|
case bytedisp:
|
|
return "byte displacement";
|
|
case bytedispdef:
|
|
return "byte displacement deferred";
|
|
case byterel:
|
|
return "byte relative";
|
|
case bytereldef:
|
|
return "byte relative deferred";
|
|
case worddisp:
|
|
return "word displacement";
|
|
case worddispdef:
|
|
return "word displacement deferred";
|
|
case wordrel:
|
|
return "word relative";
|
|
case wordreldef:
|
|
return "word relative deferred";
|
|
case immediate:
|
|
return "immediate";
|
|
case absolute:
|
|
return "absolute";
|
|
case longdisp:
|
|
return "long displacement";
|
|
case longdispdef:
|
|
return "long displacement deferred";
|
|
case longrel:
|
|
return "long relative";
|
|
case longreldef:
|
|
return "long relative deferred";
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
long
|
|
operandlength( modep )
|
|
unsigned char *modep;
|
|
{
|
|
|
|
switch ( operandmode( modep ) ) {
|
|
case literal:
|
|
case reg:
|
|
case regdef:
|
|
case autodec:
|
|
case autoinc:
|
|
case autoincdef:
|
|
return 1;
|
|
case bytedisp:
|
|
case bytedispdef:
|
|
case byterel:
|
|
case bytereldef:
|
|
return 2;
|
|
case worddisp:
|
|
case worddispdef:
|
|
case wordrel:
|
|
case wordreldef:
|
|
return 3;
|
|
case immediate:
|
|
case absolute:
|
|
case longdisp:
|
|
case longdispdef:
|
|
case longrel:
|
|
case longreldef:
|
|
return 5;
|
|
case indexed:
|
|
return 1+operandlength( modep + 1 );
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
unsigned long
|
|
reladdr( modep )
|
|
char *modep;
|
|
{
|
|
operandenum mode = operandmode( modep );
|
|
char *cp;
|
|
short *sp;
|
|
long *lp;
|
|
int i;
|
|
long value = 0;
|
|
|
|
cp = modep;
|
|
cp += 1; /* skip over the mode */
|
|
switch ( mode ) {
|
|
default:
|
|
fprintf( stderr , "[reladdr] not relative address\n" );
|
|
return (unsigned long) modep;
|
|
case byterel:
|
|
return (unsigned long) ( cp + sizeof *cp + *cp );
|
|
case wordrel:
|
|
for (i = 0; i < sizeof *sp; i++)
|
|
value = (value << 8) + (cp[i] & 0xff);
|
|
return (unsigned long) ( cp + sizeof *sp + value );
|
|
case longrel:
|
|
for (i = 0; i < sizeof *lp; i++)
|
|
value = (value << 8) + (cp[i] & 0xff);
|
|
return (unsigned long) ( cp + sizeof *lp + value );
|
|
}
|
|
}
|
|
|
|
findcall( parentp , p_lowpc , p_highpc )
|
|
nltype *parentp;
|
|
unsigned long p_lowpc;
|
|
unsigned long p_highpc;
|
|
{
|
|
unsigned char *instructp;
|
|
long length;
|
|
nltype *childp;
|
|
operandenum mode;
|
|
operandenum firstmode;
|
|
unsigned long destpc;
|
|
|
|
if ( textspace == 0 ) {
|
|
return;
|
|
}
|
|
if ( p_lowpc < s_lowpc ) {
|
|
p_lowpc = s_lowpc;
|
|
}
|
|
if ( p_highpc > s_highpc ) {
|
|
p_highpc = s_highpc;
|
|
}
|
|
# ifdef DEBUG
|
|
if ( debug & CALLDEBUG ) {
|
|
printf( "[findcall] %s: 0x%x to 0x%x\n" ,
|
|
parentp -> name , p_lowpc , p_highpc );
|
|
}
|
|
# endif DEBUG
|
|
for ( instructp = textspace + p_lowpc ;
|
|
instructp < textspace + p_highpc ;
|
|
instructp += length ) {
|
|
length = 1;
|
|
if ( *instructp == CALLF ) {
|
|
/*
|
|
* maybe a callf, better check it out.
|
|
* skip the count of the number of arguments.
|
|
*/
|
|
# ifdef DEBUG
|
|
if ( debug & CALLDEBUG ) {
|
|
printf( "[findcall]\t0x%x:callf" , instructp - textspace );
|
|
}
|
|
# endif DEBUG
|
|
firstmode = operandmode( instructp+length );
|
|
switch ( firstmode ) {
|
|
case literal:
|
|
case immediate:
|
|
break;
|
|
default:
|
|
goto botched;
|
|
}
|
|
length += operandlength( instructp+length );
|
|
mode = operandmode( instructp + length );
|
|
# ifdef DEBUG
|
|
if ( debug & CALLDEBUG ) {
|
|
printf( "\tfirst operand is %s", operandname( firstmode ) );
|
|
printf( "\tsecond operand is %s\n" , operandname( mode ) );
|
|
}
|
|
# endif DEBUG
|
|
switch ( mode ) {
|
|
case regdef:
|
|
case bytedispdef:
|
|
case worddispdef:
|
|
case longdispdef:
|
|
case bytereldef:
|
|
case wordreldef:
|
|
case longreldef:
|
|
/*
|
|
* indirect call: call through pointer
|
|
* either *d(r) as a parameter or local
|
|
* (r) as a return value
|
|
* *f as a global pointer
|
|
* [are there others that we miss?,
|
|
* e.g. arrays of pointers to functions???]
|
|
*/
|
|
addarc( parentp , &indirectchild , (long) 0 );
|
|
length += operandlength( instructp + length );
|
|
continue;
|
|
case byterel:
|
|
case wordrel:
|
|
case longrel:
|
|
/*
|
|
* regular pc relative addressing
|
|
* check that this is the address of
|
|
* a function.
|
|
*/
|
|
destpc = reladdr( instructp+length )
|
|
- (unsigned long) textspace;
|
|
if ( destpc >= s_lowpc && destpc <= s_highpc ) {
|
|
childp = nllookup( destpc );
|
|
# ifdef DEBUG
|
|
if ( debug & CALLDEBUG ) {
|
|
printf( "[findcall]\tdestpc 0x%x" , destpc );
|
|
printf( " childp->name %s" , childp -> name );
|
|
printf( " childp->value 0x%x\n" ,
|
|
childp -> value );
|
|
}
|
|
# endif DEBUG
|
|
if ( childp -> value == destpc ) {
|
|
/*
|
|
* a hit
|
|
*/
|
|
addarc( parentp , childp , (long) 0 );
|
|
length += operandlength( instructp + length );
|
|
continue;
|
|
}
|
|
goto botched;
|
|
}
|
|
/*
|
|
* else:
|
|
* it looked like a callf,
|
|
* but it wasn't to anywhere.
|
|
*/
|
|
goto botched;
|
|
default:
|
|
botched:
|
|
/*
|
|
* something funny going on.
|
|
*/
|
|
# ifdef DEBUG
|
|
if ( debug & CALLDEBUG ) {
|
|
printf( "[findcall]\tbut it's a botch\n" );
|
|
}
|
|
# endif DEBUG
|
|
length = 1;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|