text: typedef unsigned int   uint;
  typedef unsigned short ushort;
  typedef unsigned char  uchar;
  
  typedef uint pde_t;
  
  typedef int bool;
  #define true (1)
  #define false (0)
  
  //signals
  #define SIGFPE          (0x00)
  #define SIGSEGV         (0x01)
  
  typedef void (*sighandler_t)(void);
  