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, 58 insertions, 0 deletions

diff --git a/tests/tcg/cris/libc/check_addc.c b/tests/tcg/cris/libc/check_addc.c
new file mode 100644
index 000000000..fc3fb1faa
--- /dev/null
+++ b/tests/tcg/cris/libc/check_addc.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "sys.h"
+#include "crisutils.h"
+
+static always_inline int cris_addc(int a, const int b)
+{
+	asm ("addc\t%1, %0\n" : "+r" (a) : "r" (b));
+	return a;
+}
+
+#define verify_addc(a, b, res, n, z, v, c)  \
+{                                           \
+	int r;                              \
+	r = cris_addc((a), (b));            \
+	cris_tst_cc((n), (z), (v), (c));    \
+	if (r != (res))                     \
+		err();                      \
+}
+
+int main(void)
+{
+	cris_tst_cc_init();
+	asm volatile ("clearf cz");
+	verify_addc(0, 0, 0, 0, 0, 0, 0);
+
+	cris_tst_cc_init();
+	asm volatile ("setf z");
+	verify_addc(0, 0, 0, 0, 1, 0, 0);
+
+	cris_tst_cc_init();
+	asm volatile ("setf cz");
+	verify_addc(0, 0, 1, 0, 0, 0, 0);
+	cris_tst_cc_init();
+	asm volatile ("clearf c");
+	verify_addc(-1, 2, 1, 0, 0, 0, 1);
+
+	cris_tst_cc_init();
+	asm volatile ("clearf nzv");
+	asm volatile ("setf c");
+	verify_addc(-1, 2, 2, 0, 0, 0, 1);
+
+	cris_tst_cc_init();
+	asm volatile ("setf c");
+	verify_addc(0xffff, 0xffff, 0x1ffff, 0, 0, 0, 0);
+
+	cris_tst_cc_init();
+	asm volatile ("clearf nzvc");
+	verify_addc(-1, -1, 0xfffffffe, 1, 0, 0, 1);
+
+	cris_tst_cc_init();
+	asm volatile ("setf c");
+	verify_addc(0x78134452, 0x5432f789, 0xcc463bdc, 1, 0, 1, 0);
+
+	pass();
+	return 0;
+}