Better ioport debugging output.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2487 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/exec.c b/exec.c
index 6deaf49..c168abe 100644
--- a/exec.c
+++ b/exec.c
@@ -47,6 +47,8 @@
 //#define DEBUG_TB_CHECK 
 //#define DEBUG_TLB_CHECK 
 
+//#define DEBUG_IOPORT
+
 #if !defined(CONFIG_USER_ONLY)
 /* TB consistency checks only implemented for usermode emulation.  */
 #undef DEBUG_TB_CHECK