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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) \
  59.         if (!(expr)) { \
  60.             panic("assertion failed (%s), caller=%p\n", #expr, CALLER); \
  61.         }
  62. #else
  63. #   define ASSERT(expr)
  64. #endif
  65.  
  66. /** Extensive debugging output macro
  67.  *
  68.  * If CONFIG_EDEBUG is set, the LOG() macro
  69.  * will print whatever message is indicated plus
  70.  * an information about the location.
  71.  *
  72.  */
  73.  
  74. #ifdef CONFIG_EDEBUG
  75. #   define LOG(format, ...) \
  76.         printf("%s() at %s:%u: " format "\n", __func__, __FILE__, \
  77.             __LINE__, ##__VA_ARGS__);
  78. #else
  79. #   define LOG(format, ...)
  80. #endif
  81.  
  82. /** Extensive debugging execute macro
  83.  *
  84.  * If CONFIG_EDEBUG is set, the LOG_EXEC() macro
  85.  * will print an information about calling a given
  86.  * function and call it.
  87.  *
  88.  */
  89.  
  90. #ifdef CONFIG_EDEBUG
  91. #   define LOG_EXEC(fnc) \
  92.         { \
  93.             printf("%s() at %s:%u: " #fnc "\n", __func__, __FILE__, \
  94.             __LINE__); \
  95.             fnc; \
  96.         }
  97. #else
  98. #   define LOG_EXEC(fnc) fnc
  99. #endif
  100.  
  101.  
  102. #endif
  103.  
  104. /** @}
  105.  */
  106.