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, 28 insertions, 0 deletions

diff --git a/tests/tcg/i386/hello-i386.c b/tests/tcg/i386/hello-i386.c
new file mode 100644
index 000000000..59196dd0b
--- /dev/null
+++ b/tests/tcg/i386/hello-i386.c
@@ -0,0 +1,28 @@
+#include <asm/unistd.h>
+
+static inline void exit(int status)
+{
+  int __res;
+  __asm__ volatile ("movl %%ecx,%%ebx\n"\
+                    "int $0x80" \
+                    :  "=a" (__res) : "0" (__NR_exit),"c" ((long)(status)));
+}
+
+static inline int write(int fd, const char * buf, int len)
+{
+  int status;
+  __asm__ volatile ("pushl %%ebx\n"\
+                    "movl %%esi,%%ebx\n"\
+                    "int $0x80\n" \
+                    "popl %%ebx\n"\
+                    : "=a" (status) \
+                    : "0" (__NR_write),"S" ((long)(fd)),"c" ((long)(buf)),"d" ((long)(len)));
+  return status;
+}
+
+void _start(void);
+void _start(void)
+{
+    write(1, "Hello World\n", 12);
+    exit(0);
+}