linux/arch/avr32/include/asm/bug.h
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   1/*
   2 * Copyright (C) 2006 Atmel Corporation
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 */
   8#ifndef __ASM_AVR32_BUG_H
   9#define __ASM_AVR32_BUG_H
  10
  11#ifdef CONFIG_BUG
  12
  13/*
  14 * According to our Chief Architect, this compact opcode is very
  15 * unlikely to ever be implemented.
  16 */
  17#define AVR32_BUG_OPCODE        0x5df0
  18
  19#ifdef CONFIG_DEBUG_BUGVERBOSE
  20
  21#define _BUG_OR_WARN(flags)                                             \
  22        asm volatile(                                                   \
  23                "1:     .hword  %0\n"                                   \
  24                "       .section __bug_table,\"a\",@progbits\n"         \
  25                "2:     .long   1b\n"                                   \
  26                "       .long   %1\n"                                   \
  27                "       .short  %2\n"                                   \
  28                "       .short  %3\n"                                   \
  29                "       .org    2b + %4\n"                              \
  30                "       .previous"                                      \
  31                :                                                       \
  32                : "i"(AVR32_BUG_OPCODE), "i"(__FILE__),                 \
  33                  "i"(__LINE__), "i"(flags),                            \
  34                  "i"(sizeof(struct bug_entry)))
  35
  36#else
  37
  38#define _BUG_OR_WARN(flags)                                             \
  39        asm volatile(                                                   \
  40                "1:     .hword  %0\n"                                   \
  41                "       .section __bug_table,\"a\",@progbits\n"         \
  42                "2:     .long   1b\n"                                   \
  43                "       .short  %1\n"                                   \
  44                "       .org    2b + %2\n"                              \
  45                "       .previous"                                      \
  46                :                                                       \
  47                : "i"(AVR32_BUG_OPCODE), "i"(flags),                    \
  48                  "i"(sizeof(struct bug_entry)))
  49
  50#endif /* CONFIG_DEBUG_BUGVERBOSE */
  51
  52#define BUG()                                                           \
  53        do {                                                            \
  54                _BUG_OR_WARN(0);                                        \
  55                for (;;);                                               \
  56        } while (0)
  57
  58#define WARN_ON(condition)                                                      \
  59        ({                                                              \
  60                int __ret_warn_on = !!(condition);                      \
  61                if (unlikely(__ret_warn_on))                            \
  62                        _BUG_OR_WARN(BUGFLAG_WARNING);                  \
  63                unlikely(__ret_warn_on);                                \
  64        })
  65
  66#define HAVE_ARCH_BUG
  67#define HAVE_ARCH_WARN_ON
  68
  69#endif /* CONFIG_BUG */
  70
  71#include <asm-generic/bug.h>
  72
  73#endif /* __ASM_AVR32_BUG_H */
  74