sh: Fix exception_handling_table alignment.

With the recent change ripping out interrupt_table, explicit
padding of the table was missing, causing bad things to happen
when manually inserting handlers in to the table. This problem
particularly showed up in relation to do_fpu_state_restore()
which was inserted quite deeply in to the table and ended up
scribbling over a slab object.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
index 6c1f8fde5ac4..3340126f4e0f 100644
--- a/include/asm-sh/system.h
+++ b/include/asm-sh/system.h
@@ -353,6 +353,13 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
                                     (unsigned long)_n_, sizeof(*(ptr))); \
   })
 
+extern void *set_exception_table_vec(unsigned int vec, void *handler);
+
+static inline void *set_exception_table_evt(unsigned int evt, void *handler)
+{
+        return set_exception_table_vec(evt >> 5, handler);
+}
+
 /* XXX
  * disable hlt during certain critical i/o operations
  */