gprof/sparc.c

   1 /*
   2  * Copyright (c) 1983 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that: (1) source distributions retain this entire copyright
   7  * notice and comment, and (2) distributions including binaries display
   8  * the following acknowledgement:  ``This product includes software
   9  * developed by the University of California, Berkeley and its contributors''
  10  * in the documentation or other materials provided with the distribution
  11  * and in all advertising materials mentioning features or use of this
  12  * software. Neither the name of the University nor the names of its
  13  * contributors may be used to endorse or promote products derived
  14  * from this software without specific prior written permission.
  15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19 #include "gprof.h"
  20 #include "cg_arcs.h"
  21 #include "corefile.h"
  22 #include "hist.h"
  23 #include "symtab.h"
  24
  25     /*
  26      *        opcode of the `callf' instruction
  27      */
  28 #define CALL    (0xc0000000)
  29
  30 void
  31 sparc_find_call (parent, p_lowpc, p_highpc)
  32      Sym *parent;
  33      bfd_vma p_lowpc;
  34      bfd_vma p_highpc;
  35 {
  36   bfd_vma dest_pc, delta;
  37   unsigned int *instr;
  38   Sym *child;
  39
  40   delta = (bfd_vma) core_text_space - core_text_sect->vma;
  41
  42   if (core_text_space == 0)
  43     {
  44       return;
  45     }
  46   if (p_lowpc < s_lowpc)
  47     {
  48       p_lowpc = s_lowpc;
  49     }
  50   if (p_highpc > s_highpc)
  51     {
  52       p_highpc = s_highpc;
  53     }
  54   DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
  55                           parent->name, p_lowpc, p_highpc));
  56   for (instr = (unsigned int *) (((p_lowpc + delta) + 3) &~ 3);
  57        instr < (unsigned int *) (p_highpc + delta);
  58        ++instr)
  59     {
  60       if ((*instr & CALL))
  61         {
  62           DBG (CALLDEBUG,
  63                printf ("[find_call] 0x%lx: callf", (bfd_vma) instr - delta));
  64           /*
  65            * Regular pc relative addressing check that this is the
  66            * address of a function.
  67            */
  68           dest_pc = ((bfd_vma) (instr + (*instr & ~CALL))) - delta;
  69           if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
  70             {
  71               child = sym_lookup (&symtab, dest_pc);
  72               DBG (CALLDEBUG,
  73                    printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n",
  74                            dest_pc, child->name, child->addr));
  75               if (child->addr == dest_pc)
  76                 {
  77                   /* a hit:  */
  78                   arc_add (parent, child, (unsigned long) 0);
  79                   continue;
  80                 }
  81             }
  82           /*
  83            * Something funny going on.
  84            */
  85           DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
  86         }
  87     }
  88 }