110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/*
|
|
* Copyright (c) 1983, 2001 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 "corefile.h"
|
|
#include "hist.h"
|
|
#include "symtab.h"
|
|
|
|
int i386_iscall PARAMS ((unsigned char *));
|
|
void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
|
|
|
|
int
|
|
i386_iscall (ip)
|
|
unsigned char *ip;
|
|
{
|
|
if (*ip == 0xe8)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
i386_find_call (parent, p_lowpc, p_highpc)
|
|
Sym *parent;
|
|
bfd_vma p_lowpc;
|
|
bfd_vma p_highpc;
|
|
{
|
|
unsigned char *instructp;
|
|
Sym *child;
|
|
bfd_vma destpc, delta;
|
|
|
|
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 ("[findcall] %s: 0x%lx to 0x%lx\n",
|
|
parent->name, (unsigned long) p_lowpc,
|
|
(unsigned long) p_highpc));
|
|
|
|
delta = (bfd_vma) core_text_space - core_text_sect->vma;
|
|
|
|
for (instructp = (unsigned char *) (p_lowpc + delta);
|
|
instructp < (unsigned char *) (p_highpc + delta);
|
|
instructp ++)
|
|
{
|
|
if (i386_iscall (instructp))
|
|
{
|
|
DBG (CALLDEBUG,
|
|
printf ("[findcall]\t0x%lx:call",
|
|
(unsigned long) (instructp - (unsigned char *) delta)));
|
|
/*
|
|
* regular pc relative addressing
|
|
* check that this is the address of
|
|
* a function.
|
|
*/
|
|
|
|
destpc = ((bfd_vma) bfd_get_32 (core_bfd, instructp + 1)
|
|
+ (bfd_vma) instructp - (bfd_vma) delta + 5);
|
|
if (destpc >= s_lowpc && destpc <= s_highpc)
|
|
{
|
|
child = sym_lookup (&symtab, destpc);
|
|
if (child && child->addr == destpc)
|
|
{
|
|
/*
|
|
* a hit
|
|
*/
|
|
DBG (CALLDEBUG,
|
|
printf ("\tdestpc 0x%lx (%s)\n",
|
|
(unsigned long) destpc, child->name));
|
|
arc_add (parent, child, (unsigned long) 0);
|
|
instructp += 4; /* call is a 5 byte instruction */
|
|
continue;
|
|
}
|
|
}
|
|
/*
|
|
* else:
|
|
* it looked like a callf, but it:
|
|
* a) wasn't actually a callf, or
|
|
* b) didn't point to a known function in the symtab, or
|
|
* c) something funny is going on.
|
|
*/
|
|
DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
|
|
}
|
|
}
|
|
}
|