static struct value *
value_of_builtin_frame_fp_reg (struct frame_info *frame, const void *baton)
{
  struct gdbarch *gdbarch = get_frame_arch (frame);

  if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0)
    /* NOTE: cagney/2003-04-24: Since the mere presence of "fp" in the
       register name table overrides this built-in $fp register, there
       is no real reason for this gdbarch_deprecated_fp_regnum trickery here.
       An architecture wanting to implement "$fp" as alias for a raw
       register can do so by adding "fp" to register name table (mind
       you, doing this is probably a dangerous thing).  */
    return value_of_register (gdbarch_deprecated_fp_regnum (gdbarch),
			      frame);
  else
    {
      struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
      struct value *val = allocate_value (data_ptr_type);
      gdb_byte *buf = value_contents_raw (val);

      if (frame == NULL)
	memset (buf, 0, TYPE_LENGTH (value_type (val)));
      else
	gdbarch_address_to_pointer (gdbarch, data_ptr_type,
				    buf, get_frame_base_address (frame));
      return val;
    }
}
Ejemplo n.º 2
0
static struct value *
value_of_builtin_frame_pc_reg (struct frame_info *frame, const void *baton)
{
  if (gdbarch_pc_regnum (current_gdbarch) >= 0)
    return value_of_register (gdbarch_pc_regnum (current_gdbarch), frame);
  else
    {
      struct value *val = allocate_value (builtin_type_void_data_ptr);
      gdb_byte *buf = value_contents_raw (val);
      if (frame == NULL)
	memset (buf, 0, TYPE_LENGTH (value_type (val)));
      else
	gdbarch_address_to_pointer (current_gdbarch, builtin_type_void_data_ptr,
				     buf, get_frame_pc (frame));
      return val;
    }
}
Ejemplo n.º 3
0
static struct value *
value_of_builtin_frame_pc_reg (struct frame_info *frame, const void *baton)
{
  struct gdbarch *gdbarch = get_frame_arch (frame);

  if (gdbarch_pc_regnum (gdbarch) >= 0)
    return value_of_register (gdbarch_pc_regnum (gdbarch), frame);
  else
    {
      struct type *func_ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
      struct value *val = allocate_value (func_ptr_type);
      gdb_byte *buf = value_contents_raw (val);

      gdbarch_address_to_pointer (gdbarch, func_ptr_type,
				  buf, get_frame_pc (frame));
      return val;
    }
}