text: #ifndef UTILS_H
  #define UTILS_H
  
  #define uint unsigned int
  #define ulong unsigned long
  #define size_t unsigned long
  #define DEBUG 1
  int strcmp(char *s1, char *s2);
  int hex_to_int(char *p, int size);
  void *get_user_program_address();
  void shell_input(char *input);
  int log2(int x);
  int pow2(int x);
  unsigned long cstr_to_ulong(char *s);
  void* simple_malloc(void **now, int size);
  void debug(char *, int);
  
  #endif