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-rw-r--r--target/s390x/misc_helper.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c
index 5a1eba02ab..34d730ba73 100644
--- a/target/s390x/misc_helper.c
+++ b/target/s390x/misc_helper.c
@@ -103,6 +103,10 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num)
handle_diag_308(env, r1, r3);
r = 0;
break;
+ case 0x288:
+ /* time bomb (watchdog) */
+ r = handle_diag_288(env, r1, r3);
+ break;
default:
r = -1;
break;