target-hppa: Implement system and memory-management insns

Signed-off-by: Richard Henderson <rth@twiddle.net>
diff --git a/target/hppa/helper.h b/target/hppa/helper.h
index 88db719..d51cf6d 100644
--- a/target/hppa/helper.h
+++ b/target/hppa/helper.h
@@ -5,4 +5,7 @@
 DEF_HELPER_FLAGS_3(stby_b, TCG_CALL_NO_WG, void, env, tl, tl)
 DEF_HELPER_FLAGS_3(stby_e, TCG_CALL_NO_WG, void, env, tl, tl)
 
+DEF_HELPER_FLAGS_1(probe_r, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_FLAGS_1(probe_w, TCG_CALL_NO_RWG_SE, tl, tl)
+
 DEF_HELPER_FLAGS_1(loaded_fr0, TCG_CALL_NO_RWG, void, env)