text: /*
   * See the dyninst/COPYRIGHT file for copyright information.
   * 
   * We provide the Paradyn Tools (below described as "Paradyn")
   * on an AS IS basis, and do not warrant its validity or performance.
   * We reserve the right to update, modify, or discontinue this
   * software at any time.  We shall have no obligation to supply such
   * updates or modifications or any other form of support to you.
   * 
   * By your use of Paradyn, you understand and agree that we (or any
   * other person or entity with proprietary rights in Paradyn) are
   * under no obligation to provide either maintenance services,
   * update services, notices of latent defects, or correction of
   * defects for Paradyn.
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   * 
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #if !defined(SW_C_H_)
  #define SW_C_H_
  
  typedef struct {
     void *walker;
  } walker_t;
  
  typedef struct {
     void *frame;
  } frame_t;
     
  walker_t newWalkerLocal();
  walker_t newWalkerAttach(int pid);
  walker_t newWalkerCreate(char *executable, char **args);
  
  int walkStack(walker_t walker, frame_t **out_frames, unsigned int *out_frames_size);
  int walkStackFromFrame(walker_t walker, frame_t frame, frame_t **out_frames, 
                         unsigned int *out_frames_size);
  int walkSingleFrame(walker_t walker, frame_t frame, frame_t *out_frame);
  int getInitialFrame(walker_t walker, frame_t *out_frame);
  
  unsigned long frameGetReturnAddress(frame_t frame);
  unsigned long frameGetFramePointer(frame_t frame);
  unsigned long frameGetStackPointer(frame_t frame);
  int frameGetName(frame_t frame, char **buffer);
  int frameGetLibOffset(frame_t frame, char **libname, unsigned long *offset);
  int frameIsTopFrame(frame_t frame);
  int frameIsBottomFrame(frame_t frame);
  
  int freeStackwalk(frame_t *frames, unsigned int frames_size);
  int freeFrame(frame_t *frame);
  int freeName(char *name);
  
  #endif
  