-extern Uint GetSymbol(char *name);\r
-extern int GetSymbolFromBase(Uint base, char *name, Uint *ret);\r
-\r
-// === Library Functions ===\r
-extern void strcpy(char *dest, char *src);
-extern int strcmp(char *s1, char *s2);\r
-extern int strlen(char *str);\r
-\r
-// === System Calls ===\r
-extern void SysExit();\r
-extern void SysDebug(char *fmt, ...); //!< Now implemented in main.c\r
-extern void SysDebugV(char *fmt, ...);\r
-extern Uint SysLoadBin(char *path, Uint *entry);\r
-extern Uint SysUnloadBin(Uint Base);\r
+extern Uint GetSymbol(char *name);
+extern int GetSymbolFromBase(Uint base, char *name, Uint *ret);
+
+// === Library Functions ===
+extern char *strcpy(char *dest, const char *src);
+extern char *strcat(char *dest, const char *src);
+extern int strcmp(const char *s1, const char *s2);
+extern int strlen(const char *str);
+extern int file_exists(char *filename);
+
+// === System Calls ===
+extern void _exit(int retval);
+extern void SysDebug(const char *fmt, ...); //!< Now implemented in main.c
+extern void SysDebugV(const char *fmt, ...);
+extern Uint SysLoadBin(const char *path, Uint *entry);
+extern Uint SysUnloadBin(Uint Base);
+extern void SysSetFaultHandler(int (*Hanlder)(int));
+extern int open(const char *filename, int flags);
+extern void close(int fd);