arch/s390/include/asm/bug.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_S390_BUG_H
   3 #define _ASM_S390_BUG_H
   4
   5 #include <linux/kernel.h>
   6
   7 #ifdef CONFIG_BUG
   8
   9 #ifdef CONFIG_DEBUG_BUGVERBOSE
  10
  11 #define __EMIT_BUG(x) do {                                      \
  12         asm_inline volatile(                                    \
  13                 "0:     mc      0,0\n"                          \
  14                 ".section .rodata.str,\"aMS\",@progbits,1\n"    \
  15                 "1:     .asciz  \""__FILE__"\"\n"               \
  16                 ".previous\n"                                   \
  17                 ".section __bug_table,\"awM\",@progbits,%2\n"   \
  18                 "2:     .long   0b-2b,1b-2b\n"                  \
  19                 "       .short  %0,%1\n"                        \
  20                 "       .org    2b+%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_inline volatile(                                    \
  31                 "0:     mc      0,0\n"                          \
  32                 ".section __bug_table,\"awM\",@progbits,%1\n"   \
  33                 "1:     .long   0b-1b\n"                        \
  34                 "       .short  %0\n"                           \
  35                 "       .org    1b+%1\n"                        \
  36                 ".previous\n"                                   \
  37                 : : "i" (x),                                    \
  38                     "i" (sizeof(struct bug_entry)));            \
  39 } while (0)
  40
  41 #endif /* CONFIG_DEBUG_BUGVERBOSE */
  42
  43 #define BUG() do {                                      \
  44         __EMIT_BUG(0);                                  \
  45         unreachable();                                  \
  46 } while (0)
  47
  48 #define __WARN_FLAGS(flags) do {                        \
  49         __EMIT_BUG(BUGFLAG_WARNING|(flags));            \
  50 } while (0)
  51
  52 #define WARN_ON(x) ({                                   \
  53         int __ret_warn_on = !!(x);                      \
  54         if (__builtin_constant_p(__ret_warn_on)) {      \
  55                 if (__ret_warn_on)                      \
  56                         __WARN();                       \
  57         } else {                                        \
  58                 if (unlikely(__ret_warn_on))            \
  59                         __WARN();                       \
  60         }                                               \
  61         unlikely(__ret_warn_on);                        \
  62 })
  63
  64 #define HAVE_ARCH_BUG
  65 #define HAVE_ARCH_WARN_ON
  66 #endif /* CONFIG_BUG */
  67
  68 #include <asm-generic/bug.h>
  69
  70 #endif /* _ASM_S390_BUG_H */