Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 73 insertions, 0 deletions

diff --git a/tests/tcg/xtensa/test_sext.S b/tests/tcg/xtensa/test_sext.S
new file mode 100644
index 000000000..483d2176e
--- /dev/null
+++ b/tests/tcg/xtensa/test_sext.S
@@ -0,0 +1,73 @@
+#include "macros.inc"
+
+test_suite sext
+
+#if XCHAL_HAVE_SEXT
+
+test sext
+    movi    a2, 0xffffff5a
+    movi    a3, 0x0000005a
+    sext    a4, a2, 7
+    assert  eq, a3, a4
+
+    movi    a2, 0x000000a5
+    movi    a3, 0xffffffa5
+    sext    a4, a2, 7
+    assert  eq, a3, a4
+
+    movi    a2, 0xfffffaa5
+    movi    a3, 0x000000a5
+    sext    a4, a2, 8
+    assert  eq, a3, a4
+
+    movi    a2, 0x0000055a
+    movi    a3, 0xffffff5a
+    sext    a4, a2, 8
+    assert  eq, a3, a4
+
+    movi    a2, 0xffff5a5a
+    movi    a3, 0x00005a5a
+    sext    a4, a2, 15
+    assert  eq, a3, a4
+
+    movi    a2, 0x0000a5a5
+    movi    a3, 0xffffa5a5
+    sext    a4, a2, 15
+    assert  eq, a3, a4
+
+    movi    a2, 0x00055a5a
+    movi    a3, 0xffff5a5a
+    sext    a4, a2, 16
+    assert  eq, a3, a4
+
+    movi    a2, 0x000aa5a5
+    movi    a3, 0x0000a5a5
+    sext    a4, a2, 16
+    assert  eq, a3, a4
+
+    movi    a2, 0x005a5a5a
+    movi    a3, 0xffda5a5a
+    sext    a4, a2, 22
+    assert  eq, a3, a4
+
+    movi    a2, 0xffa5a5a5
+    movi    a3, 0x0025a5a5
+    sext    a4, a2, 22
+    assert  eq, a3, a4
+test_end
+
+test sext_same_rs
+    movi    a2, 0xffffff5a
+    movi    a3, 0x0000005a
+    sext    a2, a2, 7
+    assert  eq, a3, a2
+
+    movi    a2, 0x000000a5
+    movi    a3, 0xffffffa5
+    sext    a2, a2, 7
+    assert  eq, a3, a2
+test_end
+
+#endif
+
+test_suite_end