include/debug.h

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#ifndef DEBUG_H_INCLUDED
#define DEBUG_H_INCLUDED

#include <compiler.h>
#include <stdarg.h>

enum debug_level {
        DEBUG_NONE      = 0,    
        DEBUG_PANIC,            
        DEBUG_ASSERT,           
        DEBUG_ERROR,            
        DEBUG_WARNING,          
        DEBUG_INFO,             
        DEBUG_VERBOSE,          
};

#ifndef CONFIG_DEBUG_CONSOLE
# define dbg_init()             do { } while (0)
# undef DEBUG_LEVEL
# define DEBUG_LEVEL            DEBUG_NONE
#else
extern const struct stream_ops *dbg_backend_init(void);
extern void dbg_init(void);
# ifndef DEBUG_LEVEL
#  ifdef CONFIG_DEBUG_LEVEL
#   define DEBUG_LEVEL          CONFIG_DEBUG_LEVEL
#  else
#   define DEBUG_LEVEL          DEBUG_INFO
#  endif
# endif
#endif

extern int dbg_priv_vprintf(const char *format, va_list ap);
extern int dbg_priv_printf(const char *format, ...) __printf_format(1, 2);
extern int dbg_priv_putstr(const char *str);
extern int dbg_priv_putchar(int c);

static inline int dbg_priv_retzero(void)
{
        return 0;
}

#define dbg_priv_check_level(level)                                     \
        (DEBUG_LEVEL != DEBUG_NONE && (level) <= DEBUG_LEVEL)

#define dbg_vprintf_level(level, format, ap)                    \
        (dbg_priv_check_level(level)                            \
                ? dbg_priv_vprintf(format, ap)                  \
                : dbg_priv_retzero())

#define dbg_printf_level(level, ...)                            \
        (dbg_priv_check_level(level)                            \
                ? dbg_priv_printf(__VA_ARGS__)                  \
                : dbg_priv_retzero())

#define dbg_putstr_level(level, str)                            \
        (dbg_priv_check_level(level)                            \
                ? dbg_priv_putstr(str)                          \
                : dbg_priv_retzero())

#define dbg_putchar_level(level, c)                             \
        (dbg_priv_check_level(level)                            \
                ? dbg_priv_putchar(c)                           \
                : dbg_priv_retzero())

#define dbg_putstr(str)                                         \
        dbg_putstr_level(DEBUG_VERBOSE, str)

#define dbg_putchar(c)                                          \
        dbg_putchar_level(DEBUG_VERBOSE, c)

#define dbg_panic(...)                                          \
        dbg_printf_level(DEBUG_PANIC, __VA_ARGS__)

#define dbg_error(...)                                          \
        dbg_printf_level(DEBUG_ERROR, __VA_ARGS__)

#define dbg_warning(...)                                        \
        dbg_printf_level(DEBUG_WARNING, __VA_ARGS__)

#define dbg_info(...)                                           \
        dbg_printf_level(DEBUG_INFO, __VA_ARGS__)

#define dbg_verbose(...)                                        \
        dbg_printf_level(DEBUG_VERBOSE, __VA_ARGS__)


#endif /* DEBUG_H_INCLUDED */

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