1/*
2 * Copyright (c) 1983, 1993
3 *      The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29#include "gprof.h"
30#include "search_list.h"
31#include "source.h"
32#include "symtab.h"
33#include "cg_arcs.h"
34#include "corefile.h"
35#include "hist.h"
36
37    /*
38     *        opcode of the `callf' instruction
39     */
40#define	CALL	(0xc0000000)
41
42void sparc_find_call (Sym *, bfd_vma, bfd_vma);
43
44void
45sparc_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc)
46{
47  bfd_vma pc, dest_pc;
48  unsigned int insn;
49  Sym *child;
50
51  DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
52			  parent->name, (unsigned long) p_lowpc,
53			  (unsigned long) p_highpc));
54  for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4)
55    {
56      insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space
57				    + pc - core_text_sect->vma));
58      if (insn & CALL)
59	{
60	  DBG (CALLDEBUG,
61	       printf ("[find_call] 0x%lx: callf", (unsigned long) pc));
62	  /*
63	   * Regular pc relative addressing check that this is the
64	   * address of a function.
65	   */
66	  dest_pc = pc + (((bfd_signed_vma) (insn & 0x3fffffff)
67			   ^ 0x20000000) - 0x20000000);
68	  if (hist_check_address (dest_pc))
69	    {
70	      child = sym_lookup (&symtab, dest_pc);
71	      if (child)
72		{
73	          DBG (CALLDEBUG,
74		      printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n",
75			     (unsigned long) dest_pc, child->name,
76			     (unsigned long) child->addr));
77	          if (child->addr == dest_pc)
78		    {
79		      /* a hit:  */
80		      arc_add (parent, child, (unsigned long) 0);
81		      continue;
82		    }
83		}
84	    }
85	  /*
86	   * Something funny going on.
87	   */
88	  DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
89	}
90    }
91}
92