bug.h

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#ifndef __ASM_SH_BUG_H
#define __ASM_SH_BUG_H

#include <linux/linkage.h>

#define TRAPA_BUG_OPCODE    0xc33e  /* trapa #0x3e */
#define BUGFLAG_UNWINDER    (1 << 1)

#ifdef CONFIG_GENERIC_BUG
#define HAVE_ARCH_BUG
#define HAVE_ARCH_WARN_ON

#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _EMIT_BUG_ENTRY             \
    "\t.pushsection __bug_table,\"a\"\n"    \
    "2:\t.long 1b, %O1\n"           \
    "\t.short %O2, %O3\n"           \
    "\t.org 2b+%O4\n"           \
    "\t.popsection\n"
#else
#define _EMIT_BUG_ENTRY             \
    "\t.pushsection __bug_table,\"a\"\n"    \
    "2:\t.long 1b\n"            \
    "\t.short %O3\n"            \
    "\t.org 2b+%O4\n"           \
    "\t.popsection\n"
#endif

#define BUG()                       \
do {                            \
    __asm__ __volatile__ (              \
        "1:\t.short %O0\n"          \
        _EMIT_BUG_ENTRY             \
         :                  \
         : "n" (TRAPA_BUG_OPCODE),      \
           "i" (__FILE__),          \
           "i" (__LINE__), "i" (0),     \
           "i" (sizeof(struct bug_entry))); \
} while (0)

#define __WARN_TAINT(taint)             \
do {                            \
    __asm__ __volatile__ (              \
        "1:\t.short %O0\n"          \
         _EMIT_BUG_ENTRY            \
         :                  \
         : "n" (TRAPA_BUG_OPCODE),      \
           "i" (__FILE__),          \
           "i" (__LINE__),          \
           "i" (BUGFLAG_TAINT(taint)),      \
           "i" (sizeof(struct bug_entry))); \
} while (0)

#define WARN_ON(x) ({                       \
    int __ret_warn_on = !!(x);              \
    if (__builtin_constant_p(__ret_warn_on)) {      \
        if (__ret_warn_on)              \
            __WARN();               \
    } else {                        \
        if (unlikely(__ret_warn_on))            \
            __WARN();               \
    }                           \
    unlikely(__ret_warn_on);                \
})

#define UNWINDER_BUG()                  \
do {                            \
    __asm__ __volatile__ (              \
        "1:\t.short %O0\n"          \
        _EMIT_BUG_ENTRY             \
         :                  \
         : "n" (TRAPA_BUG_OPCODE),      \
           "i" (__FILE__),          \
           "i" (__LINE__),          \
           "i" (BUGFLAG_UNWINDER),      \
           "i" (sizeof(struct bug_entry))); \
} while (0)

#define UNWINDER_BUG_ON(x) ({                   \
    int __ret_unwinder_on = !!(x);              \
    if (__builtin_constant_p(__ret_unwinder_on)) {      \
        if (__ret_unwinder_on)              \
            UNWINDER_BUG();             \
    } else {                        \
        if (unlikely(__ret_unwinder_on))        \
            UNWINDER_BUG();             \
    }                           \
    unlikely(__ret_unwinder_on);                \
})

#else

#define UNWINDER_BUG    BUG
#define UNWINDER_BUG_ON BUG_ON

#endif /* CONFIG_GENERIC_BUG */

#include <asm-generic/bug.h>

struct pt_regs;

/* arch/sh/kernel/traps.c */
extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);
extern void die_if_no_fixup(const char *str, struct pt_regs *regs, long err);

#endif /* __ASM_SH_BUG_H */