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, 47 insertions, 0 deletions

diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
new file mode 100644
index 000000000..4d2a9f6c4
--- /dev/null
+++ b/scripts/qemu-gdb.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+#
+# GDB debugging support
+#
+# Copyright 2012 Red Hat, Inc. and/or its affiliates
+#
+# Authors:
+#  Avi Kivity <avi@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later.  See the COPYING file in the top-level directory.
+
+# Usage:
+# At the (gdb) prompt, type "source scripts/qemu-gdb.py".
+# "help qemu" should then list the supported QEMU debug support commands.
+
+import gdb
+
+import os, sys
+
+# Annoyingly, gdb doesn't put the directory of scripts onto the
+# module search path. Do it manually.
+
+sys.path.append(os.path.dirname(__file__))
+
+from qemugdb import aio, mtree, coroutine, tcg, timers
+
+class QemuCommand(gdb.Command):
+    '''Prefix for QEMU debug support commands'''
+    def __init__(self):
+        gdb.Command.__init__(self, 'qemu', gdb.COMMAND_DATA,
+                             gdb.COMPLETE_NONE, True)
+
+QemuCommand()
+coroutine.CoroutineCommand()
+mtree.MtreeCommand()
+aio.HandlersCommand()
+tcg.TCGLockStatusCommand()
+timers.TimersCommand()
+
+coroutine.CoroutineSPFunction()
+coroutine.CoroutinePCFunction()
+coroutine.CoroutineBt()
+
+# Default to silently passing through SIGUSR1, because QEMU sends it
+# to itself a lot.
+gdb.execute('handle SIGUSR1 pass noprint nostop')