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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. /** @addtogroup genericdebug
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_DEBUG_H_
  36. #define KERN_DEBUG_H_
  37.  
  38. #include <panic.h>
  39. #include <arch/debug.h>
  40.  
  41. #define CALLER       ((uintptr_t)__builtin_return_address(0))
  42.  
  43. #ifndef HERE
  44. /** Current Instruction Pointer address */
  45. #  define HERE ((uintptr_t *) 0)
  46. #endif
  47.  
  48. /** Debugging ASSERT macro
  49.  *
  50.  * If CONFIG_DEBUG is set, the ASSERT() macro
  51.  * evaluates expr and if it is false raises
  52.  * kernel panic.
  53.  *
  54.  * @param expr Expression which is expected to be true.
  55.  *
  56.  */
  57. #ifdef CONFIG_DEBUG
  58. #   define ASSERT(expr) if (!(expr)) { panic("assertion failed (%s), caller=%.*p\n", #expr, sizeof(uintptr_t) * 2, CALLER); }
  59. #else
  60. #   define ASSERT(expr)
  61. #endif
  62.  
  63. #endif
  64.  
  65. /** @}
  66.  */
  67.