LXR linux/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/compiler.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 */
  71