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cell-binutils  2.17cvs20070401
Functions | Variables
mips.c File Reference
#include "gprof.h"
#include "search_list.h"
#include "source.h"
#include "symtab.h"
#include "cg_arcs.h"
#include "corefile.h"
#include "hist.h"

Go to the source code of this file.

Functions

void mips_find_call (Sym *, bfd_vma, bfd_vma)

Variables

static Sym indirect_child

Function Documentation

void mips_find_call ( Sym parent,
bfd_vma  p_lowpc,
bfd_vma  p_highpc 
)

Definition at line 42 of file mips.c.

{
  bfd_vma pc, dest_pc;
  unsigned int op;
  int offset;
  Sym *child;
  static bfd_boolean inited = FALSE;

  if (!inited)
    {
      inited = TRUE;
      sym_init (&indirect_child);
      indirect_child.name = _("<indirect child>");
      indirect_child.cg.prop.fract = 1.0;
      indirect_child.cg.cyc.head = &indirect_child;
    }

  if (!core_text_space)
    {
      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; pc < p_highpc; pc += 4)
    {
      op = bfd_get_32 (core_bfd, &((char *)core_text_space)[pc - s_lowpc]);
      if ((op & 0xfc000000) == 0x0c000000)
       {
         /* This is a "jal" instruction.  Check that the destination
            is the address of a function.  */
         DBG (CALLDEBUG,
              printf (_("[find_call] 0x%lx: jal"), (unsigned long) pc));
          offset = (op & 0x03ffffff) << 2;
         dest_pc = (pc & ~(bfd_vma) 0xfffffff) | offset;
         if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
           {
             child = sym_lookup (&symtab, dest_pc);
             DBG (CALLDEBUG,
                 printf (" 0x%lx\t; name=%s, addr=0x%lx",
                        (unsigned long) dest_pc, child->name,
                        (unsigned long) child->addr));
             if (child->addr == dest_pc)
              {
                DBG (CALLDEBUG, printf ("\n"));
                /* a hit:  */
                arc_add (parent, child, (unsigned long) 0);
                continue;
              }
           }
         /* Something funny going on.  */
         DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
       }
      else if ((op & 0xfc00f83f) == 0x0000f809)
       {
         /* This is a "jalr" instruction (indirect call).  */
         DBG (CALLDEBUG,
              printf (_("[find_call] 0x%lx: jalr\n"), (unsigned long) pc));
         arc_add (parent, &indirect_child, (unsigned long) 0);
       }
    }
}

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Variable Documentation

Sym indirect_child [static]

Definition at line 37 of file mips.c.