trapslab initialized

user/ulib.c

@@ -1,13 +1,8 @@
 #include "kernel/types.h"
 #include "kernel/stat.h"
 #include "kernel/fcntl.h"
-#ifdef LAB_PGTBL
-#include "kernel/riscv.h"
-#include "kernel/memlayout.h"
-#endif
 #include "user/user.h"
 
-
 //
 // wrapper so that it's OK if main() does not call exit().
 //
@@ -150,12 +145,3 @@ memcpy(void *dst, const void *src, uint n)
 {
   return memmove(dst, src, n);
 }
-
-#ifdef LAB_PGTBL
-int
-ugetpid(void)
-{
-  struct usyscall *u = (struct usyscall *)USYSCALL;
-  return u->pid;
-}
-#endif