arch/s390/include/asm/bug.h

   1 #ifndef _ASM_S390_BUG_H
   2 #define _ASM_S390_BUG_H
   3
   4 #include <linux/kernel.h>
   5
   6 #ifdef CONFIG_BUG
   7
   8 #ifdef CONFIG_DEBUG_BUGVERBOSE
   9
  10 #define __EMIT_BUG(x) do {                                      \
  11         asm volatile(                                           \
  12                 "0:     j       0b+2\n"                         \
  13                 "1:\n"                                          \
  14                 ".section .rodata.str,\"aMS\",@progbits,1\n"    \
  15                 "2:     .asciz  \""__FILE__"\"\n"               \
  16                 ".previous\n"                                   \
  17                 ".section __bug_table,\"aw\"\n"                 \
  18                 "3:     .long   1b-3b,2b-3b\n"                  \
  19                 "       .short  %0,%1\n"                        \
  20                 "       .org    3b+%2\n"                        \
  21                 ".previous\n"                                   \
  22                 : : "i" (__LINE__),                             \
  23                     "i" (x),                                    \
  24                     "i" (sizeof(struct bug_entry)));            \
  25 } while (0)
  26
  27 #else /* CONFIG_DEBUG_BUGVERBOSE */
  28
  29 #define __EMIT_BUG(x) do {                              \
  30         asm volatile(                                   \
  31                 "0:     j       0b+2\n"                 \
  32                 "1:\n"                                  \
  33                 ".section __bug_table,\"aw\"\n"         \
  34                 "2:     .long   1b-2b\n"                \
  35                 "       .short  %0\n"                   \
  36                 "       .org    2b+%1\n"                \
  37                 ".previous\n"                           \
  38                 : : "i" (x),                            \
  39                     "i" (sizeof(struct bug_entry)));    \
  40 } while (0)
  41
  42 #endif /* CONFIG_DEBUG_BUGVERBOSE */
  43
  44 #define BUG() do {                                      \
  45         __EMIT_BUG(0);                                  \
  46         unreachable();                                  \
  47 } while (0)
  48
  49 #define __WARN_FLAGS(flags) do {                        \
  50         __EMIT_BUG(BUGFLAG_WARNING|(flags));            \
  51 } while (0)
  52
  53 #define WARN_ON(x) ({                                   \
  54         int __ret_warn_on = !!(x);                      \
  55         if (__builtin_constant_p(__ret_warn_on)) {      \
  56                 if (__ret_warn_on)                      \
  57                         __WARN();                       \
  58         } else {                                        \
  59                 if (unlikely(__ret_warn_on))            \
  60                         __WARN();                       \
  61         }                                               \
  62         unlikely(__ret_warn_on);                        \
  63 })
  64
  65 #define HAVE_ARCH_BUG
  66 #define HAVE_ARCH_WARN_ON
  67 #endif /* CONFIG_BUG */
  68
  69 #include <asm-generic/bug.h>
  70
  71 #endif /* _ASM_S390_BUG_H */