tools-src/gnu/binutils/gprof/sparc.c

   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
  42 void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
  43
  44 void
  45 sparc_find_call (parent, p_lowpc, p_highpc)
  46      Sym *parent;
  47      bfd_vma p_lowpc;
  48      bfd_vma p_highpc;
  49 {
  50   bfd_vma pc, dest_pc;
  51   unsigned int insn;
  52   Sym *child;
  53
  54   if (core_text_space == 0)
  55     {
  56       return;
  57     }
  58   if (p_lowpc < s_lowpc)
  59     {
  60       p_lowpc = s_lowpc;
  61     }
  62   if (p_highpc > s_highpc)
  63     {
  64       p_highpc = s_highpc;
  65     }
  66   DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
  67                           parent->name, (unsigned long) p_lowpc,
  68                           (unsigned long) p_highpc));
  69   for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4)
  70     {
  71       insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space
  72                                     + pc - core_text_sect->vma));
  73       if (insn & CALL)
  74         {
  75           DBG (CALLDEBUG,
  76                printf ("[find_call] 0x%lx: callf", (unsigned long) pc));
  77           /*
  78            * Regular pc relative addressing check that this is the
  79            * address of a function.
  80            */
  81           dest_pc = pc + (((bfd_signed_vma) (insn & 0x3fffffff)
  82                            ^ 0x20000000) - 0x20000000);
  83           if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
  84             {
  85               child = sym_lookup (&symtab, dest_pc);
  86               DBG (CALLDEBUG,
  87                    printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n",
  88                            (unsigned long) dest_pc, child->name,
  89                            (unsigned long) child->addr));
  90               if (child->addr == dest_pc)
  91                 {
  92                   /* a hit:  */
  93                   arc_add (parent, child, (unsigned long) 0);
  94                   continue;
  95                 }
  96             }
  97           /*
  98            * Something funny going on.
  99            */
 100           DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
 101         }
 102     }
 103 }