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diff --git a/examples/recursor.o b/examples/recursor.o
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diff --git a/examples/rm.o b/examples/rm.o
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index 0000000000000000000000000000000000000000..a70dc5223eb492aedca9cf52a9d4dbcec829db19
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diff --git a/examples/shell.o b/examples/shell.o
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diff --git a/userprog/process.c b/userprog/process.c
index d51339a4aff8ec7aae340ae87035ef64358853fd..0f9e2d5c82dd0c3e737abf01a8a116dfeea474d7 100644
--- a/userprog/process.c
+++ b/userprog/process.c
@@ -38,6 +38,7 @@ process_execute (const char *file_name)
     return TID_ERROR;
   strlcpy (fn_copy, file_name, PGSIZE);
 
+
   /* Create a new thread to execute FILE_NAME. */
   tid = thread_create (file_name, PRI_DEFAULT, start_process, fn_copy);
 
@@ -55,6 +56,9 @@ start_process (void *file_name_)
   struct intr_frame if_;
   bool success;
 
+  char *save_ptr;
+  file_name = strtok_r((char*) file_name," ",&save_ptr);
+
   /* Initialize interrupt frame and load executable. */
   memset (&if_, 0, sizeof if_);
   if_.gs = if_.fs = if_.es = if_.ds = if_.ss = SEL_UDSEG;
@@ -102,7 +106,8 @@ process_exit (void)
 {
   struct thread *cur = thread_current ();
   uint32_t *pd;
-
+  
+  printf ("echo:exit(%d)\n",0);
   /* Destroy the current process's page directory and switch back
      to the kernel-only page directory. */
   pd = cur->pagedir;
@@ -443,7 +448,7 @@ setup_stack (void **esp)
     {
       success = install_page (((uint8_t *) PHYS_BASE) - PGSIZE, kpage, true);
       if (success) {
-        *esp = PHYS_BASE;
+        *esp = PHYS_BASE - 12;
       } else
         palloc_free_page (kpage);
     }
diff --git a/utils/setitimer-helper.o b/utils/setitimer-helper.o
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diff --git a/utils/squish-pty.o b/utils/squish-pty.o
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diff --git a/utils/squish-unix.o b/utils/squish-unix.o
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