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/****************************************************************************

 *                                                                          *

 *                         GNAT COMPILER COMPONENTS                         *

 *                                                                          *

 *                         V X _ S T A C K _ I N F O                        *

 *                                                                          *

 *                          C Implementation File                           *

 *                                                                          *

 *              Copyright (C) 2007-2009  Free Software Foundation, Inc.     *

 *                                                                          *

 * GNAT is free software;  you can  redistribute it  and/or modify it under *

 * terms of the  GNU General Public License as published  by the Free Soft- *

 * ware  Foundation;  either version 3,  or (at your option) any later ver- *

 * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *

 * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *

 * or FITNESS FOR A PARTICULAR PURPOSE.                                     *

 *                                                                          *

 * As a special exception under Section 7 of GPL version 3, you are granted *

 * additional permissions described in the GCC Runtime Library Exception,   *

 * version 3.1, as published by the Free Software Foundation.               *

 *                                                                          *

 * You should have received a copy of the GNU General Public License and    *

 * a copy of the GCC Runtime Library Exception along with this program;     *

 * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *

 * <http://www.gnu.org/licenses/>.                                          *

 *                                                                          *

 * GNAT was originally developed  by the GNAT team at  New York University. *

 * Extensive contributions were provided by Ada Core Technologies Inc.      *

 *                                                                          *

 ****************************************************************************/

/* VxWorks-specific file to have access to task-specific data and be able

   to extract the stack boundaries for stack checking. */

#include <taskLib.h>

typedef struct

{

  int  size;

  char *base;

  char *end;

} stack_info;

/* __gnat_get_stack_info is used by s-stchop.adb only for VxWorks. This

   procedure fills the stack information associated to the currently

   executing task. */

extern void __gnat_get_stack_info (stack_info *vxworks_stack_info);

void

__gnat_get_stack_info (stack_info *vxworks_stack_info)

{

  TASK_DESC descriptor;

  /* Ask the VxWorks kernel about stack values */

  taskInfoGet (taskIdSelf (), &descriptor);

  /* Fill the stack data with the information provided by the kernel */

  vxworks_stack_info->size = descriptor.td_stackSize;

  vxworks_stack_info->base = descriptor.td_pStackBase;

  vxworks_stack_info->end  = descriptor.td_pStackEnd;

}