1  #pragma once
2  
3  #define ALWAYS_INLINE __attribute__((always_inline))
4  #define WEAK __attribute__((weak))
5  #define NO_RETURN __attribute__((noreturn))
6  #define NO_OPT __attribute__((optimize("O0")))
7  #define PACKED __attribute__((packed))
8  
9  void __PANIC() NO_RETURN;