コード例 #1
0
ファイル: btrace.c プロジェクト: krichter722/binutils-gdb
static void
btrace_add_pc (struct thread_info *tp)
{
  struct btrace_data btrace;
  struct btrace_block *block;
  struct regcache *regcache;
  struct cleanup *cleanup;
  CORE_ADDR pc;

  regcache = get_thread_regcache (tp->ptid);
  pc = regcache_read_pc (regcache);

  btrace_data_init (&btrace);
  btrace.format = BTRACE_FORMAT_BTS;
  btrace.variant.bts.blocks = NULL;

  cleanup = make_cleanup_btrace_data (&btrace);

  block = VEC_safe_push (btrace_block_s, btrace.variant.bts.blocks, NULL);
  block->begin = pc;
  block->end = pc;

  btrace_compute_ftrace (tp, &btrace);

  do_cleanups (cleanup);
}
コード例 #2
0
ファイル: btrace.c プロジェクト: krichter722/binutils-gdb
void
btrace_fetch (struct thread_info *tp)
{
  struct btrace_thread_info *btinfo;
  struct btrace_target_info *tinfo;
  struct btrace_data btrace;
  struct cleanup *cleanup;
  int errcode;

  DEBUG ("fetch thread %d (%s)", tp->num, target_pid_to_str (tp->ptid));

  btinfo = &tp->btrace;
  tinfo = btinfo->target;
  if (tinfo == NULL)
    return;

  /* There's no way we could get new trace while replaying.
     On the other hand, delta trace would return a partial record with the
     current PC, which is the replay PC, not the last PC, as expected.  */
  if (btinfo->replay != NULL)
    return;

  btrace_data_init (&btrace);
  cleanup = make_cleanup_btrace_data (&btrace);

  /* Let's first try to extend the trace we already have.  */
  if (btinfo->end != NULL)
    {
      errcode = target_read_btrace (&btrace, tinfo, BTRACE_READ_DELTA);
      if (errcode == 0)
	{
	  /* Success.  Let's try to stitch the traces together.  */
	  errcode = btrace_stitch_trace (&btrace, tp);
	}
      else
	{
	  /* We failed to read delta trace.  Let's try to read new trace.  */
	  errcode = target_read_btrace (&btrace, tinfo, BTRACE_READ_NEW);

	  /* If we got any new trace, discard what we have.  */
	  if (errcode == 0 && !btrace_data_empty (&btrace))
	    btrace_clear (tp);
	}

      /* If we were not able to read the trace, we start over.  */
      if (errcode != 0)
	{
	  btrace_clear (tp);
	  errcode = target_read_btrace (&btrace, tinfo, BTRACE_READ_ALL);
	}
    }
  else
    errcode = target_read_btrace (&btrace, tinfo, BTRACE_READ_ALL);

  /* If we were not able to read the branch trace, signal an error.  */
  if (errcode != 0)
    error (_("Failed to read branch trace."));

  /* Compute the trace, provided we have any.  */
  if (!btrace_data_empty (&btrace))
    {
      btrace_clear_history (btinfo);
      btrace_compute_ftrace (tp, &btrace);
    }

  do_cleanups (cleanup);
}
コード例 #3
0
void
btrace_data_clear (struct btrace_data *data)
{
  btrace_data_fini (data);
  btrace_data_init (data);
}