typedef unsigned size_t;

#define noreturn _Noreturn

#define SYS_exit 1
#define SYS_write 4
#define STDOUT 1

inline void sys_exit(int error_code)
{
  asm("mov r0, %0\n\t"
      "mov r7, %1\n\t"
      "swi 0\n\t"
      :
      : "r" (error_code),
        "r" (SYS_exit)
      : "r0", "r7");
}

inline int sys_write(unsigned int fd, const char* buf, size_t count)
{
  asm("mov r0, %0\n\t"
      "mov r1, %1\n\t "
      "mov r2, %2\n\t"
      "mov r7, %3\n\t"
      "swi 0\n\t"
      :
      : "r" (fd),
        "r" (buf),
        "r" (count),
        "r" (SYS_write)
      : "r0", "r1", "r2", "r7");
}

void _start(void) {
  sys_write(STDOUT, "20 text/gemini\r\n# Hello, C!\r\nThis page was generated from C code (without any libraries!)", 16+13+60);
  sys_exit(0);
}