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_64BIT
   9 #define S390_LONG ".quad"
  10 #else
  11 #define S390_LONG ".long"
  12 #endif
  13
  14 #ifdef CONFIG_DEBUG_BUGVERBOSE
  15
  16 #define __EMIT_BUG(x) do {                                      \
  17         asm volatile(                                           \
  18                 "0:     j       0b+2\n"                         \
  19                 "1:\n"                                          \
  20                 ".section .rodata.str,\"aMS\",@progbits,1\n"    \
  21                 "2:     .asciz  \""__FILE__"\"\n"               \
  22                 ".previous\n"                                   \
  23                 ".section __bug_table,\"a\"\n"                  \
  24                 "3:\t"  S390_LONG "\t1b,2b\n"                   \
  25                 "       .short  %0,%1\n"                        \
  26                 "       .org    3b+%2\n"                        \
  27                 ".previous\n"                                   \
  28                 : : "i" (__LINE__),                             \
  29                     "i" (x),                                    \
  30                     "i" (sizeof(struct bug_entry)));            \
  31 } while (0)
  32
  33 #else /* CONFIG_DEBUG_BUGVERBOSE */
  34
  35 #define __EMIT_BUG(x) do {                              \
  36         asm volatile(                                   \
  37                 "0:     j       0b+2\n"                 \
  38                 "1:\n"                                  \
  39                 ".section __bug_table,\"a\"\n"          \
  40                 "2:\t"  S390_LONG "\t1b\n"              \
  41                 "       .short  %0\n"                   \
  42                 "       .org    2b+%1\n"                \
  43                 ".previous\n"                           \
  44                 : : "i" (x),                            \
  45                     "i" (sizeof(struct bug_entry)));    \
  46 } while (0)
  47
  48 #endif /* CONFIG_DEBUG_BUGVERBOSE */
  49
  50 #define BUG() do {                                      \
  51         __EMIT_BUG(0);                                  \
  52         for (;;);                                       \
  53 } while (0)
  54
  55 #define WARN_ON(x) ({                                   \
  56         int __ret_warn_on = !!(x);                      \
  57         if (__builtin_constant_p(__ret_warn_on)) {      \
  58                 if (__ret_warn_on)                      \
  59                         __EMIT_BUG(BUGFLAG_WARNING);    \
  60         } else {                                        \
  61                 if (unlikely(__ret_warn_on))            \
  62                         __EMIT_BUG(BUGFLAG_WARNING);    \
  63         }                                               \
  64         unlikely(__ret_warn_on);                        \
  65 })
  66
  67 #define HAVE_ARCH_BUG
  68 #define HAVE_ARCH_WARN_ON
  69 #endif /* CONFIG_BUG */
  70
  71 #include <asm-generic/bug.h>
  72
  73 #endif /* _ASM_S390_BUG_H */