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/* $OpenBSD: sparc.c,v 1.7 2009/10/27 23:59:38 deraadt Exp $ */
/* $NetBSD: sparc.c,v 1.4 1995/04/19 07:16:24 cgd Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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. 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.
*/
#include "gprof.h"
/*
* a namelist entry to be the child of indirect calls
*/
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 , /* times called by live arcs */
(long) 0 , /* how many calls to self */
(double) 1.0 , /* propagation fraction */
(double) 0.0 , /* self propagation time */
(double) 0.0 , /* child propagation time */
(short) 0 , /* print flag */
(short) 0 , /* flags */
(int) 0 , /* index in the graph list */
(int) 0 , /* graph call chain top-sort order */
(int) 0 , /* internal number of cycle on */
(int) 0 , /* number of live parent arcs */
(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 */
};
void
findcall(nltype *parentp, unsigned long p_lowpc, unsigned long p_highpc)
{
unsigned long pc;
nltype *childp;
unsigned long destpc;
long op;
int off;
if (textspace == 0)
return;
if (p_lowpc < s_lowpc)
p_lowpc = s_lowpc;
if (p_highpc > s_highpc)
p_highpc = s_highpc;
for (pc = p_lowpc; pc < p_highpc; pc += 4) {
off = pc - s_lowpc;
op = *(unsigned long *)&textspace[off];
if ((op & 0xc0000000) == 0x40000000) {
/*
* a pc relative call insn -- check that this
* is the address of a function.
*/
off = (op & 0x3fffffff) << 2;
destpc = pc + off;
if (destpc >= s_lowpc && destpc <= s_highpc) {
childp = nllookup(destpc);
if (childp != 0 && childp->value == destpc)
addarc(parentp, childp, 0L);
}
} else if ((op & 0xfff80000) == 0x9fc00000)
/*
* A jmpl with rd = 15 (%o7) -- an indirect call.
*/
addarc(parentp, &indirectchild, 0L);
}
}
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