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  1. /*
  2.  * Copyright (C) 2005 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __DEBUG_H__
  30. #define __DEBUG_H__
  31.  
  32. #include <panic.h>
  33. #include <arch/debug.h>
  34.  
  35. #define CALLER       ((__address)__builtin_return_address(0))
  36.  
  37. #ifndef HERE
  38. /** Current Instruction Pointer address */
  39. #  define HERE ((__address *)0)
  40. #endif
  41.  
  42. /** Debugging ASSERT macro
  43.  *
  44.  * If CONFIG_DEBUG is set, the ASSERT() macro
  45.  * evaluates expr and if it is false raises
  46.  * kernel panic.
  47.  *
  48.  * @param expr Expression which is expected to be true.
  49.  *
  50.  */
  51. #ifdef CONFIG_DEBUG
  52. #   define ASSERT(expr) if (!(expr)) { panic("assertion failed (%s), caller=%p\n", #expr, CALLER); }
  53. #else
  54. #   define ASSERT(expr)
  55. #endif
  56.  
  57. #define STRING(arg) STRING_ARG(arg)
  58. #define STRING_ARG(arg) #arg
  59.  
  60. #endif
  61.