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bug.h

/*
 * 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

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