breakpoint.c

eCos操作系统源码

//==========================================================================
//
//      breakpoint.c
//
//      Breakpoint generation.
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    
// Contributors: gthomas
// Date:         1999-10-20
// Purpose:      Breakpoint generation.
// Description:  
//               
//
//####DESCRIPTIONEND####
//
//=========================================================================


#include <bsp/cpu.h>
#include <bsp/bsp.h>

#ifndef DEBUG_BREAKPOINT
#define DEBUG_BREAKPOINT 0
#endif

#ifdef __ECOS__
#include <cyg/hal/hal_arch.h>
#endif /* __ECOS__ */

/*
 *  Trigger a breakpoint exception.
 */
void
bsp_breakpoint(void)
{
#if DEBUG_BREAKPOINT
    bsp_printf("Before BP\n");
#endif

#ifdef __ECOS__
#  ifdef __NEED_UNDERSCORE__
    HAL_BREAKPOINT(_bsp_breakinsn);
#  else
    HAL_BREAKPOINT(bsp_breakinsn);
#  endif
#else
#  ifdef __NEED_UNDERSCORE__
    asm volatile (".globl _bsp_breakinsn\n"
		  "_bsp_breakinsn:\n");
#  else
    asm volatile (".globl bsp_breakinsn\n"
		  "bsp_breakinsn:\n");
#  endif
    BREAKPOINT();
#endif

#if DEBUG_BREAKPOINT
    bsp_printf("After BP\n");
#endif
}