/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2006,2007 INESC Porto, INRIA
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Gustavo Carneiro <gjc@inescporto.pt>
* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
*/
#ifndef BREAKPOINT_H
#define BREAKPOINT_H
namespace ns3 {
/* Hacker macro to place breakpoints for selected machines.
* Actual use is strongly discouraged of course ;)
* Copied from GLib 2.12.9.
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
/**
* \ingroup debugging
*
* Inserts a breakpoint instruction (or equivalent system call) into
* the code for selected machines. When an NS_ASSERT cannot verify its condition,
* this macro is used. Falls back to calling
* AssertBreakpoint() for architectures where breakpoint assembly
* instructions are not supported.
*/
#if (defined (__i386__) || defined (__amd64__) || defined (__x86_64__)) && defined (__GNUC__) && __GNUC__ >= 2
# define NS_BREAKPOINT() \
do{ __asm__ __volatile__ ("int $03"); }while(false)
#elif defined (_MSC_VER) && defined (_M_IX86)
# define NS_BREAKPOINT() \
do{ __asm int 3h }while(false)
#elif defined (__alpha__) && !defined(__osf__) && defined (__GNUC__) && __GNUC__ >= 2
# define NS_BREAKPOINT() \
do{ __asm__ __volatile__ ("bpt"); }while(false)
#else /* !__i386__ && !__alpha__ */
# define NS_BREAKPOINT() ns3::BreakpointFallback ()
#endif
/**
* \brief fallback breakpoint function
*
* This function is used by the NS_BREAKPOINT() macro as a fallback
* for when breakpoint assembly instructions are not available. It
* attempts to halt program execution either by a raising SIGTRAP, on
* unix systems, or by dereferencing a null pointer.
*
* Normally you should not call this function directly.
*/
void BreakpointFallback (void);
}//namespace ns3
#endif /* BREAKPOINT_H */