Restore verbatim.

Fix table.

diff --git a/doc/userprog.texi b/doc/userprog.texi
index 67d7853bc94ee4da9910fce62bf3d90832e0abaf..903d9c53311dcd856860b10a5749ffdbd234d3ab 100644 (file)
--- a/doc/userprog.texi
+++ b/doc/userprog.texi
@@ -476,7 +476,7 @@ because there's no way to return an error code from a memory access.
 Therefore, for those who want to try the latter technique, we'll
 provide a little bit of helpful code:
 
-@example
+@verbatim
 /* Tries to copy a byte from user address USRC to kernel address DST.
    Returns true if successful, false if USRC is invalid. */
 static inline bool get_user (uint8_t *dst, const uint8_t *usrc) {
@@ -494,7 +494,7 @@ static inline bool put_user (uint8_t *udst, uint8_t byte) {
        : "=m" (*udst), "=&a" (eax) : "r" (byte));
   return eax != 0;
 }
-@end example
+@end verbatim
 
 Each of these functions assumes that the user address has already been
 verified to be below @code{PHYS_BASE}.  They also assume that you've
@@ -805,12 +805,12 @@ You may find the non-standard @func{hex_dump} function, declared in
 Here's what it would show in the above example, given that
 @code{PHYS_BASE} is @t{0xc0000000}:
 
-@example
+@verbatim
 bfffffc0                                      00 00 00 00 |            ....|
 bfffffd0  04 00 00 00 d8 ff ff bf-ed ff ff bf f5 ff ff bf |................|
 bfffffe0  f8 ff ff bf fc ff ff bf-00 00 00 00 00 2f 62 69 |............./bi|
 bffffff0  6e 2f 6c 73 00 2d 6c 00-2a 2e 68 00 2a 2e 63 00 |n/ls.-l.*.h.*.c.|
-@end example
+@end verbatim
 
 @node System Calls
 @section System Calls
@@ -850,7 +850,7 @@ arbitrary:
 @html
 <CENTER>
 @end html
-@multitable {Address} {Value}
+@multitable {@t{0xbffffe7c}} {Value}
 @item Address @tab Value
 @item @t{0xbffffe7c} @tab 3
 @item @t{0xbffffe78} @tab 2