target/s390x: add EX support for TRT and TRTR

Improves "b213c9f5: target/s390x: Implement TRTR" by introducing the
intermediate functions, which are compatible with dx_helper type.

Signed-off-by: Pavel Zbitskiy <pavel.zbitskiy@gmail.com>
Message-Id: <20180821025104.19604-6-pavel.zbitskiy@gmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/tcg/s390x/exrl-trtr.c b/tests/tcg/s390x/exrl-trtr.c
new file mode 100644
index 0000000..c33153a
--- /dev/null
+++ b/tests/tcg/s390x/exrl-trtr.c
@@ -0,0 +1,48 @@
+#include <stdint.h>
+#include <unistd.h>
+
+int main(void)
+{
+    char op1[] = {0, 1, 2, 3};
+    char op2[256];
+    uint64_t r1 = 0xffffffffffffffffull;
+    uint64_t r2 = 0xffffffffffffffffull;
+    uint64_t cc;
+    int i;
+
+    for (i = 0; i < 256; i++) {
+        if (i == 1) {
+            op2[i] = 0xbb;
+        } else {
+            op2[i] = 0;
+        }
+    }
+    asm volatile(
+        "    j 2f\n"
+        "1:  trtr 3(1,%[op1]),0(%[op2])\n"
+        "2:  exrl %[op1_len],1b\n"
+        "    lgr %[r1],%%r1\n"
+        "    lgr %[r2],%%r2\n"
+        "    ipm %[cc]\n"
+        : [r1] "+r" (r1),
+          [r2] "+r" (r2),
+          [cc] "=r" (cc)
+        : [op1] "r" (&op1),
+          [op1_len] "r" (3),
+          [op2] "r" (&op2)
+        : "r1", "r2", "cc");
+    cc = (cc >> 28) & 3;
+    if (cc != 1) {
+        write(1, "bad cc\n", 7);
+        return 1;
+    }
+    if ((char *)r1 != &op1[1]) {
+        write(1, "bad r1\n", 7);
+        return 1;
+    }
+    if (r2 != 0xffffffffffffffbbull) {
+        write(1, "bad r2\n", 7);
+        return 1;
+    }
+    return 0;
+}