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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 "search_list.h"
#include "source.h"
#include "symtab.h"
#include "cg_arcs.h"
#include "corefile.h"
#include "hist.h"
/*
* opcode of the `callf' instruction
*/
#define CALL (0xc0000000)
void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
void
sparc_find_call (parent, p_lowpc, p_highpc)
Sym *parent;
bfd_vma p_lowpc;
bfd_vma p_highpc;
{
bfd_vma pc, dest_pc;
unsigned int insn;
Sym *child;
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, (unsigned long) p_lowpc,
(unsigned long) p_highpc));
for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4)
{
insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space
+ pc - core_text_sect->vma));
if (insn & CALL)
{
DBG (CALLDEBUG,
printf ("[find_call] 0x%lx: callf", (unsigned long) pc));
/*
* Regular pc relative addressing check that this is the
* address of a function.
*/
dest_pc = pc + (((bfd_signed_vma) (insn & 0x3fffffff)
^ 0x20000000) - 0x20000000);
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",
(unsigned long) dest_pc, child->name,
(unsigned long) child->addr));
if (child->addr == dest_pc)
{
/* a hit: */
arc_add (parent, child, (unsigned long) 0);
continue;
}
}
/*
* Something funny going on.
*/
DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
}
}
}
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