Replace cpu_physical_memory_rw were possible

Using cpu_physical_memory_read, cpu_physical_memory_write and ldub_phys
improves readability and allows removing some type casts.

lduw_phys and ldl_phys were not used because both require aligned
addresses. Therefore it is not possible to simply replace existing
calls by one of these functions.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/disas.c b/disas.c
index 17b4ce4..223606c 100644
--- a/disas.c
+++ b/disas.c
@@ -345,7 +345,7 @@
                      struct disassemble_info *info)
 {
     if (monitor_disas_is_physical) {
-        cpu_physical_memory_rw(memaddr, myaddr, length, 0);
+        cpu_physical_memory_read(memaddr, myaddr, length);
     } else {
         cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
     }