bug.h

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/*
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _BLACKFIN_BUG_H
#define _BLACKFIN_BUG_H

#ifdef CONFIG_BUG

/*
 * This can be any undefined 16-bit opcode, meaning
 * ((opcode & 0xc000) != 0xc000)
 * Anything from 0x0001 to 0x000A (inclusive) will work
 */
#define BFIN_BUG_OPCODE 0x0001

#ifdef CONFIG_DEBUG_BUGVERBOSE

#define _BUG_OR_WARN(flags)                     \
    asm volatile(                           \
        "1: .hword  %0\n"                   \
        "   .section __bug_table,\"a\",@progbits\n"     \
        "2: .long   1b\n"                   \
        "   .long   %1\n"                   \
        "   .short  %2\n"                   \
        "   .short  %3\n"                   \
        "   .org    2b + %4\n"              \
        "   .previous"                  \
        :                           \
        : "i"(BFIN_BUG_OPCODE), "i"(__FILE__),          \
          "i"(__LINE__), "i"(flags),                \
          "i"(sizeof(struct bug_entry)))

#else

#define _BUG_OR_WARN(flags)                     \
    asm volatile(                           \
        "1: .hword  %0\n"                   \
        "   .section __bug_table,\"a\",@progbits\n"     \
        "2: .long   1b\n"                   \
        "   .short  %1\n"                   \
        "   .org    2b + %2\n"              \
        "   .previous"                  \
        :                           \
        : "i"(BFIN_BUG_OPCODE), "i"(flags),         \
          "i"(sizeof(struct bug_entry)))

#endif /* CONFIG_DEBUG_BUGVERBOSE */

#define BUG()                               \
    do {                                \
        _BUG_OR_WARN(0);                    \
        unreachable();                      \
    } while (0)

#define WARN_ON(condition)                          \
    ({                              \
        int __ret_warn_on = !!(condition);          \
        if (unlikely(__ret_warn_on))                \
            _BUG_OR_WARN(BUGFLAG_WARNING);          \
        unlikely(__ret_warn_on);                \
    })

#define HAVE_ARCH_BUG
#define HAVE_ARCH_WARN_ON

#endif

#include <asm-generic/bug.h>

#endif