From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Richard Henderson <richard.henderson@linaro.org>,
David Hildenbrand <david@redhat.com>,
Thomas Huth <thuth@redhat.com>
Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org,
Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH v2 2/2] tests/tcg/s390x: Test TEST AND SET
Date: Mon, 18 Mar 2024 21:27:11 +0100 [thread overview]
Message-ID: <20240318202722.20675-2-iii@linux.ibm.com> (raw)
In-Reply-To: <20240318202722.20675-1-iii@linux.ibm.com>
Add a small test to prevent regressions.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
tests/tcg/s390x/Makefile.target | 1 +
tests/tcg/s390x/ts.c | 35 +++++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+)
create mode 100644 tests/tcg/s390x/ts.c
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index e2aba2ec274..a8f86c94498 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -47,6 +47,7 @@ TESTS+=add-logical-with-carry
TESTS+=lae
TESTS+=cvd
TESTS+=cvb
+TESTS+=ts
cdsg: CFLAGS+=-pthread
cdsg: LDFLAGS+=-pthread
diff --git a/tests/tcg/s390x/ts.c b/tests/tcg/s390x/ts.c
new file mode 100644
index 00000000000..441faf30d98
--- /dev/null
+++ b/tests/tcg/s390x/ts.c
@@ -0,0 +1,35 @@
+/*
+ * Test the TEST AND SET instruction.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include <assert.h>
+#include <stdlib.h>
+
+static int ts(char *p)
+{
+ int cc;
+
+ asm("ts %[p]\n"
+ "ipm %[cc]"
+ : [cc] "=r" (cc)
+ , [p] "+Q" (*p)
+ : : "cc");
+
+ return (cc >> 28) & 3;
+}
+
+int main(void)
+{
+ char c;
+
+ c = 0x80;
+ assert(ts(&c) == 1);
+ assert(c == 0xff);
+
+ c = 0x7f;
+ assert(ts(&c) == 0);
+ assert(c == 0xff);
+
+ return EXIT_SUCCESS;
+}
--
2.44.0
next prev parent reply other threads:[~2024-03-18 20:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-18 20:27 [PATCH v2 1/2] target/s390x: Use mutable temporary value for op_ts Ilya Leoshkevich
2024-03-18 20:27 ` Ilya Leoshkevich [this message]
2024-03-18 21:53 ` [PATCH v2 2/2] tests/tcg/s390x: Test TEST AND SET Richard Henderson
2024-03-18 22:03 ` [PATCH v2 1/2] target/s390x: Use mutable temporary value for op_ts David Hildenbrand
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