1 files changed, 45 insertions, 0 deletions
diff --git a/tests/tcg/s390x/vistr.c b/tests/tcg/s390x/vistr.c
new file mode 100644
index 0000000..8e3e987
--- /dev/null
+++ b/tests/tcg/s390x/vistr.c
@@ -0,0 +1,45 @@
+/*
+ * Test the VECTOR ISOLATE STRING (vistr) instruction
+ */
+#include <stdint.h>
+#include <stdio.h>
+#include "vx.h"
+
+static inline void vistr(S390Vector *v1, S390Vector *v2,
+                         const uint8_t m3, const uint8_t m5)
+{
+    asm volatile("vistr %[v1], %[v2], %[m3], %[m5]\n"
+                 : [v1] "=v" (v1->v)
+                 : [v2]  "v" (v2->v)
+                 , [m3]  "i" (m3)
+                 , [m5]  "i" (m5)
+                 : "cc");
+}
+
+int main(int argc, char *argv[])
+{
+    S390Vector vd = {};
+    S390Vector vs16 = {
+        .h[0] = 0x1234, .h[1] = 0x0056, .h[2] = 0x7800, .h[3] = 0x0000,
+        .h[4] = 0x0078, .h[5] = 0x0000, .h[6] = 0x6543, .h[7] = 0x2100
+    };
+    S390Vector vs32 = {
+        .w[0] = 0x12340000, .w[1] = 0x78654300,
+        .w[2] = 0x0, .w[3] = 0x12,
+    };
+
+    vistr(&vd, &vs16, 1, 0);
+    if (vd.h[0] != 0x1234 || vd.h[1] != 0x0056 || vd.h[2] != 0x7800 ||
+        vd.h[3] || vd.h[4] || vd.h[5] || vd.h[6] || vd.h[7]) {
+        puts("ERROR: vitrh failed!");
+        return 1;
+    }
+
+    vistr(&vd, &vs32, 2, 0);
+    if (vd.w[0] != 0x12340000 || vd.w[1] != 0x78654300 || vd.w[2] || vd.w[3]) {
+        puts("ERROR: vitrf failed!");
+        return 1;
+    }
+
+    return 0;
+}