From: Ilya Leoshkevich <i...@linux.ibm.com>
Add a small test to prevent regressions. Userspace runs in primary
mode, so LAE should always set the access register to 0.
Signed-off-by: Ilya Leoshkevich <i...@linux.ibm.com>
Message-ID: <20240111092328.929421-3-...@linux.ibm.com>
Reviewed-by: Thomas Huth <th...@redhat.com>
Signed-off-by: Thomas Huth <th...@redhat.com>
---
tests/tcg/s390x/lae.c | 31 +++++++++++++++++++++++++++++++
tests/tcg/s390x/Makefile.target | 1 +
2 files changed, 32 insertions(+)
create mode 100644 tests/tcg/s390x/lae.c
diff --git a/tests/tcg/s390x/lae.c b/tests/tcg/s390x/lae.c
new file mode 100644
index 0000000000..59712b5e37
--- /dev/null
+++ b/tests/tcg/s390x/lae.c
@@ -0,0 +1,31 @@
+/*
+ * Test the LOAD ADDRESS EXTENDED instruction.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include <assert.h>
+#include <stdlib.h>
+
+int main(void)
+{
+ unsigned long long ar = -1, b2 = 100000, r, x2 = 500;
+ /*
+ * Hardcode the register number, since clang does not allow using %rN in
+ * place of %aN.
+ */
+ register unsigned long long r2 __asm__("2");
+ int tmp;
+
+ asm("ear %[tmp],%%a2\n"
+ "lae %%r2,42(%[x2],%[b2])\n"
+ "ear %[ar],%%a2\n"
+ "sar %%a2,%[tmp]"
+ : [tmp] "=&r" (tmp), "=&r" (r2), [ar] "+r" (ar)
+ : [b2] "r" (b2), [x2] "r" (x2)
+ : "memory");
+ r = r2;
+ assert(ar == 0xffffffff00000000ULL);
+ assert(r == 100542);
+
+ return EXIT_SUCCESS;
+}
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index 0e670f3f8b..30994dcf9c 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -44,6 +44,7 @@ TESTS+=clgebr
TESTS+=clc
TESTS+=laalg
TESTS+=add-logical-with-carry
+TESTS+=lae
cdsg: CFLAGS+=-pthread
cdsg: LDFLAGS+=-pthread
--
2.43.0
