X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fuserprog%2Fpagedir.c;h=3ad8123557a37dace964bcc18be56a431605f87d;hb=7d4e3dda080a47db88616f1c0d975f2091be47f1;hp=000aefea700be64ded51049debd81ffae0199328;hpb=f0ad7eb8b43516c7a2999fd217ec85d954dfc791;p=pintos-anon

diff --git a/src/userprog/pagedir.c b/src/userprog/pagedir.c
index 000aefe..3ad8123 100644
--- a/src/userprog/pagedir.c
+++ b/src/userprog/pagedir.c
@@ -192,18 +192,18 @@ pagedir_activate (uint32_t *pd)
      aka PDBR (page directory base register).  This activates our
      new page tables immediately.  See [IA32-v2a] "MOV--Move
      to/from Control Registers" and [IA32-v3] 3.7.5. */
-  asm volatile ("movl %0,%%cr3" :: "r" (vtop (pd)));
+  asm volatile ("mov %%cr3, %0" :: "r" (vtop (pd)));
 }
 
 /* Returns the currently active page directory. */
 static uint32_t *
 active_pd (void) 
 {
+  /* Copy CR3, the page directory base register (PDBR), into
+     `pd'.
+     See [IA32-v2a] "MOV--Move to/from Control Registers" and
+     [IA32-v3] 3.7.5. */
   uint32_t *pd;
-
-  /* Copy CR3, the page directory base register (PDBR), into `pd'
-     for us to exmaine.  See [IA32-v2a] "MOV--Move to/from
-     Control Registers" and [IA32-v3] 3.7.5. */
-  asm ("movl %%cr3,%0" : "=r" (pd));
+  asm ("mov %0, %%cr3" : "=r" (pd));
   return pd;
 }