1 files changed, 36 insertions, 0 deletions
diff --git a/tests/tcg/s390x/lpsw.S b/tests/tcg/s390x/lpsw.S
new file mode 100644
index 0000000000..b37dec59b7
--- /dev/null
+++ b/tests/tcg/s390x/lpsw.S
@@ -0,0 +1,36 @@
+/*
+ * Test the LPSW instruction.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+    .org 0x140
+svc_old_psw:
+    .org 0x1c0                         /* supervisor call new PSW */
+    .quad 0x80000000,svc               /* 31-bit mode */
+    .org 0x200                         /* lowcore padding */
+
+    .globl _start
+_start:
+    lpsw short_psw
+lpsw_target:
+    svc 0
+expected_pswa:
+    j failure
+
+svc:
+    clc svc_old_psw(16),expected_psw   /* correct full PSW? */
+    jne failure
+    lpswe success_psw
+failure:
+    lpswe failure_psw
+
+    .align 8
+short_psw:
+    .long 0x90001,0x80000000+lpsw_target         /* problem state,
+                                                    64-bit mode */
+expected_psw:
+    .quad 0x1000180000000,expected_pswa          /* corresponds to short_psw */
+success_psw:
+    .quad 0x2000000000000,0xfff        /* see is_special_wait_psw() */
+failure_psw:
+    .quad 0x2000000000000,0            /* disabled wait */