Add a simple test to prevent regressions.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
tests/tcg/s390x/Makefile.target | 4 ++
tests/tcg/s390x/cdsg.c | 73 +++++++++++++++++++++++++++++++++
2 files changed, 77 insertions(+)
create mode 100644 tests/tcg/s390x/cdsg.c
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index 1d454270c0e..523214dac33 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -27,6 +27,7 @@ TESTS+=noexec
TESTS+=div
TESTS+=clst
TESTS+=long-double
+TESTS+=cdsg
Z13_TESTS=vistr
$(Z13_TESTS): CFLAGS+=-march=z13 -O2
@@ -66,3 +67,6 @@ sha512-mvx: sha512.c
$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $< -o $@ $(LDFLAGS)
TESTS+=sha512-mvx
+
+cdsg: CFLAGS+=-pthread
+cdsg: LDFLAGS+=-pthread
diff --git a/tests/tcg/s390x/cdsg.c b/tests/tcg/s390x/cdsg.c
new file mode 100644
index 00000000000..83313699f7d
--- /dev/null
+++ b/tests/tcg/s390x/cdsg.c
@@ -0,0 +1,73 @@
+#include <assert.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+static volatile bool start;
+static unsigned long val[2] __attribute__((__aligned__(16)));
+
+void *cdsg_loop(void *arg)
+{
+ unsigned long orig0, orig1, new0, new1;
+ register unsigned long r0 asm("r0");
+ register unsigned long r1 asm("r1");
+ register unsigned long r2 asm("r2");
+ register unsigned long r3 asm("r3");
+ int cc;
+ int i;
+
+ while (!start) {
+ }
+
+ orig0 = val[0];
+ orig1 = val[1];
+ for (i = 0; i < 1000;) {
+ new0 = orig0 + 1;
+ new1 = orig1 + 2;
+
+ r0 = orig0;
+ r1 = orig1;
+ r2 = new0;
+ r3 = new1;
+ asm("cdsg %[r0],%[r2],%[db2]\n"
+ "ipm %[cc]"
+ : [r0] "+r" (r0)
+ , [r1] "+r" (r1)
+ , [db2] "=m" (val)
+ , [cc] "=r" (cc)
+ : [r2] "r" (r2)
+ , [r3] "r" (r3)
+ : "cc");
+ orig0 = r0;
+ orig1 = r1;
+ cc = (cc >> 28) & 3;
+
+ if (cc == 0) {
+ orig0 = new0;
+ orig1 = new1;
+ i++;
+ } else {
+ assert(cc == 1);
+ }
+ }
+
+ return NULL;
+}
+
+int main(void)
+{
+ pthread_t thread;
+ int ret;
+
+ ret = pthread_create(&thread, NULL, cdsg_loop, NULL);
+ assert(ret == 0);
+ start = true;
+ cdsg_loop(NULL);
+ ret = pthread_join(thread, NULL);
+ assert(ret == 0);
+
+ assert(val[0] == 2000);
+ assert(val[1] == 4000);
+
+ return EXIT_SUCCESS;
+}