target-lm32: stop VM on illegal or unknown instruction
Instead of translating the instruction to a no-op, pause the VM and display
a message to the user.
As a side effect, this also works for instructions where the operands are
only known at runtime.
Signed-off-by: Michael Walle <michael@walle.cc>
diff --git a/target-lm32/helper.h b/target-lm32/helper.h
index ad44fdf..f4442e0 100644
--- a/target-lm32/helper.h
+++ b/target-lm32/helper.h
@@ -13,5 +13,6 @@
DEF_HELPER_1(rcsr_ip, i32, env)
DEF_HELPER_1(rcsr_jtx, i32, env)
DEF_HELPER_1(rcsr_jrx, i32, env)
+DEF_HELPER_1(ill, void, env)
#include "exec/def-helper.h"
