arch/blackfin/include/asm/bug.h

   1 /*
   2  * Copyright 2004-2009 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef _BLACKFIN_BUG_H
   8 #define _BLACKFIN_BUG_H
   9
  10 #ifdef CONFIG_BUG
  11
  12 #define BFIN_BUG_OPCODE 0xefcd
  13
  14 #ifdef CONFIG_DEBUG_BUGVERBOSE
  15
  16 #define _BUG_OR_WARN(flags)                                             \
  17         asm volatile(                                                   \
  18                 "1:     .hword  %0\n"                                   \
  19                 "       .section __bug_table,\"a\",@progbits\n"         \
  20                 "2:     .long   1b\n"                                   \
  21                 "       .long   %1\n"                                   \
  22                 "       .short  %2\n"                                   \
  23                 "       .short  %3\n"                                   \
  24                 "       .org    2b + %4\n"                              \
  25                 "       .previous"                                      \
  26                 :                                                       \
  27                 : "i"(BFIN_BUG_OPCODE), "i"(__FILE__),                  \
  28                   "i"(__LINE__), "i"(flags),                            \
  29                   "i"(sizeof(struct bug_entry)))
  30
  31 #else
  32
  33 #define _BUG_OR_WARN(flags)                                             \
  34         asm volatile(                                                   \
  35                 "1:     .hword  %0\n"                                   \
  36                 "       .section __bug_table,\"a\",@progbits\n"         \
  37                 "2:     .long   1b\n"                                   \
  38                 "       .short  %1\n"                                   \
  39                 "       .org    2b + %2\n"                              \
  40                 "       .previous"                                      \
  41                 :                                                       \
  42                 : "i"(BFIN_BUG_OPCODE), "i"(flags),                     \
  43                   "i"(sizeof(struct bug_entry)))
  44
  45 #endif /* CONFIG_DEBUG_BUGVERBOSE */
  46
  47 #define BUG()                                                           \
  48         do {                                                            \
  49                 _BUG_OR_WARN(0);                                        \
  50                 for (;;);                                               \
  51         } while (0)
  52
  53 #define WARN_ON(condition)                                                      \
  54         ({                                                              \
  55                 int __ret_warn_on = !!(condition);                      \
  56                 if (unlikely(__ret_warn_on))                            \
  57                         _BUG_OR_WARN(BUGFLAG_WARNING);                  \
  58                 unlikely(__ret_warn_on);                                \
  59         })
  60
  61 #define HAVE_ARCH_BUG
  62 #define HAVE_ARCH_WARN_ON
  63
  64 #endif
  65
  66 #include <asm-generic/bug.h>
  67
  68 #endif