#ifndef __LUNAIX_SPIKE_H
#define __LUNAIX_SPIKE_H

// Some helper functions. As helpful as Spike the Dragon! :)

// 除法向上取整
#define CEIL(v, k) (((v) + (1 << (k)) - 1) >> (k))

// 除法向下取整
#define FLOOR(v, k) ((v) >> (k))

// 获取v最近的最大k倍数
#define ROUNDUP(v, k) (((v) + (k)-1) & ~((k)-1))

// 获取v最近的最小k倍数
#define ROUNDDOWN(v, k) ((v) & ~((k)-1))

#define __USER__ __attribute__((section(".usrtext")))

inline static void
spin()
{
    while (1)
        ;
}

#ifdef __LUNAIXOS_DEBUG__
#define assert(cond)                                                           \
    if (!(cond)) {                                                             \
        __assert_fail(#cond, __FILE__, __LINE__);                              \
    }

#define assert_msg(cond, msg)                                                  \
    if (!(cond)) {                                                             \
        __assert_fail(msg, __FILE__, __LINE__);                                \
    }
void
__assert_fail(const char* expr, const char* file, unsigned int line)
  __attribute__((noinline, noreturn));
#else
#define assert(cond) (void)(cond);          // assert nothing
#define assert_msg(cond, msg) (void)(cond); // assert nothing
#endif

void
panick(const char* msg);

#define wait_until(cond)                                                       \
    while (!(cond))                                                            \
        ;
#define loop_until(cond)                                                       \
    while (!(cond))                                                            \
        ;

#endif /* __LUNAIX_SPIKE_H */