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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "gprof.h"
#include "cg_arcs.h"
#include "core.h"
#include "hist.h"
#include "symtab.h"
void
find_call (parent, p_lowpc, p_highpc)
Sym *parent;
bfd_vma p_lowpc;
bfd_vma p_highpc;
{
bfd_vma dest_pc, delta;
unsigned int *instr;
Sym *child;
delta = (bfd_vma) core_text_space - core_text_sect->vma;
if (core_text_space == 0)
{
return;
}
if (p_lowpc < s_lowpc)
{
p_lowpc = s_lowpc;
}
if (p_highpc > s_highpc)
{
p_highpc = s_highpc;
}
DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
parent->name, p_lowpc, p_highpc));
for (instr = (unsigned int *) (((p_lowpc + delta) + 3) &~ 3);
instr < (unsigned int *) (p_highpc + delta);
++instr)
{
if ((*instr & CALL))
{
DBG (CALLDEBUG,
printf ("[find_call] 0x%lx: callf", (bfd_vma) instr - delta));
/*
* Regular pc relative addressing check that this is the
* address of a function.
*/
dest_pc = ((bfd_vma) (instr + (*instr & ~CALL))) - delta;
if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
{
child = sym_lookup (&symtab, dest_pc);
DBG (CALLDEBUG,
printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n",
dest_pc, child->name, child->addr));
if (child->addr == dest_pc)
{
/* a hit: */
arc_add (parent, child, 0);
continue;
}
}
/*
* Something funny going on.
*/
DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
}
}
}
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