ARM TCG conversion 1/16.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4138 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/target-arm/helpers.h b/target-arm/helpers.h
new file mode 100644
index 0000000..577f5ee
--- /dev/null
+++ b/target-arm/helpers.h
@@ -0,0 +1,6 @@
+#ifndef DEF_HELPER
+#define DEF_HELPER(name, ret, args) ret helper_##name args;
+#endif
+
+DEF_HELPER(sxtb16, uint32_t, (uint32_t))
+DEF_HELPER(uxtb16, uint32_t, (uint32_t))