workbench/classes/gadgets/colorwheel/Debug.h

   1 #ifndef DEBUG_H
   2 #define DEBUG_H
   3 /*
   4 **      $VER: Debug.h 2.1 (19.10.97)
   5 **
   6 **      Copyright (C) 1995,96,97 Bernardo Innocenti. All rights reserved.
   7 **
   8 **      Use 4 chars wide TABs to read this file
   9 **
  10 **      Some handy debug macros which are automatically excluded when the
  11 **      DEBUG preprocessor sysmbol is not defined. To make debug executables,
  12 **      link with debug.lib or any module containing the kprintf() function.
  13 **
  14 **      Here is a short description of the macros defined below:
  15 **
  16 **      ILLEGAL
  17 **              Output an inline "ILLEGAL" 68K opcode, which will
  18 **              be interpreted as a breakpoint by most debuggers.
  19 **
  20 **      DBPRINTF
  21 **              Output a formatted string to the debug console. This
  22 **              macro uses the debug.lib kprintf() function by default.
  23 **
  24 **      ASSERT(x)
  25 **              Do nothing if the expression <x> evalutates to a
  26 **              non-zero value, output a debug message otherwise.
  27 **
  28 **      ASSERT_VALID(x)
  29 **              Checks if the expression <x> points to a valid
  30 **              memory location, and outputs a debug message
  31 **              otherwise. A NULL pointer is considered VALID.
  32 **
  33 **      ASSERT_VALIDNO0(x)
  34 **              Checks if the expression <x> points to a valid
  35 **              memory location, and outputs a debug message
  36 **              otherwise. A NULL pointer is considered INVALID.
  37 **
  38 **      DB(x)
  39 **              Compile the expression <x> when making a debug
  40 **              executable, leave it out otherwise.
  41 */
  42
  43 #ifdef DEBUG
  44
  45         /* Needed for TypeOfMem() */
  46         #ifndef  PROTO_EXEC_H
  47         #include <proto/exec.h>
  48         #endif /* PROTO_EXEC_H */
  49
  50         #if defined(__SASC)
  51
  52                 extern void __builtin_emit (int);
  53                 #define ILLEGAL __builtin_emit(0x4AFC)
  54                 STDARGS extern void kprintf (const char *, ...);
  55
  56         #elif defined(__GNUC__)
  57
  58                 /* Currently, there is no kprintf() function in libamiga.a */
  59                 #define kprintf printf
  60
  61                 /* GCC doesn't accept asm statemnts in the middle of an
  62                  * expression such as "a ? b : asm(something)".
  63                  */
  64                 #define ILLEGAL illegal()
  65                 static inline int illegal(void) { asm ("illegal"); return 0; }
  66                 extern void STDARGS FORMATCALL(printf,1,2) kprintf (const char *, ...);
  67
  68         #else
  69                 #error Please add compiler specific definitions for your compiler
  70         #endif
  71
  72         #if defined(__SASC) || defined (__GNUC__)
  73
  74                 /* common definitions for ASSERT and DB macros */
  75
  76                 #define DBPRINTF kprintf
  77
  78                 #define ASSERT(x) ( (x) ? 0 :                                                                           \
  79                         ( DBPRINTF ("\x07%s, %ld: assertion failed: " #x "\n",                  \
  80                         __FILE__, __LINE__) , ILLEGAL ) );
  81
  82                 #define ASSERT_VALID(x) ( ((((APTR)(x)) == NULL) ||                                     \
  83                         (((LONG)(x) > 1024) &&  TypeOfMem ((APTR)(x)))) ? 0 :                   \
  84                         ( DBPRINTF ("\x07%s, %ld: bad address: " #x " = $%lx\n",                \
  85                         __FILE__, __LINE__, (APTR)(x)) , ILLEGAL ) );
  86
  87                 #define ASSERT_VALIDNO0(x) ( (((LONG)(x) > 1024) &&                                     \
  88                         TypeOfMem ((APTR)(x))) ? 0 :                                                                    \
  89                         ( DBPRINTF ("\x07%s, %ld: bad address: " #x " = $%lx\n",                \
  90                         __FILE__, __LINE__, (APTR)(x)) , ILLEGAL ) );
  91
  92                 #define DB(x) x
  93         #endif
  94
  95 #else
  96         #define ASSERT_VALID(x)
  97         #define ASSERT_VALIDNO0(x)
  98         #define ASSERT(x)
  99         #define DB(x)
 100 #endif /* DEBUG */
 101
 102 #endif /* !DEBUG_H */