include/asm-ppc/bug.h

   1 #ifndef _PPC_BUG_H
   2 #define _PPC_BUG_H
   3
   4 struct bug_entry {
   5         unsigned long   bug_addr;
   6         int             line;
   7         const char      *file;
   8         const char      *function;
   9 };
  10
  11 /*
  12  * If this bit is set in the line number it means that the trap
  13  * is for WARN_ON rather than BUG or BUG_ON.
  14  */
  15 #define BUG_WARNING_TRAP        0x1000000
  16
  17 #define BUG() do {                                                       \
  18         __asm__ __volatile__(                                            \
  19                 "1:     twi 31,0,0\n"                                    \
  20                 ".section __bug_table,\"a\"\n\t"                         \
  21                 "       .long 1b,%0,%1,%2\n"                             \
  22                 ".previous"                                              \
  23                 : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
  24 } while (0)
  25
  26 #define BUG_ON(x) do {                                          \
  27         __asm__ __volatile__(                                   \
  28                 "1:     twnei %0,0\n"                           \
  29                 ".section __bug_table,\"a\"\n\t"                \
  30                 "       .long 1b,%1,%2,%3\n"                    \
  31                 ".previous"                                     \
  32                 : : "r" (x), "i" (__LINE__), "i" (__FILE__),    \
  33                     "i" (__FUNCTION__));                        \
  34 } while (0)
  35
  36 #define PAGE_BUG(page) do { BUG(); } while (0)
  37
  38 #define WARN_ON(x) do {                                         \
  39         __asm__ __volatile__(                                   \
  40                 "1:     twnei %0,0\n"                           \
  41                 ".section __bug_table,\"a\"\n\t"                \
  42                 "       .long 1b,%1,%2,%3\n"                    \
  43                 ".previous"                                     \
  44                 : : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP), \
  45                     "i" (__FILE__), "i" (__FUNCTION__));        \
  46 } while (0)
  47
  48 #endif