plugin/tracing: merge full-tracing plugin into generic version

The full-tracing plugin was used in the DSN paper. It additionally
traces the data that was accessed/written on a memory access and the
contents of some CPU registers.

Change-Id: I61f5230699009ce523aba341985b98148160556d

tools/dump-trace/dump-trace.py

@@ -0,0 +1,62 @@
+#! /usr/bin/env python
+
+# create python bindings before running:
+# protoc --python_out=. trace.proto
+
+import trace_pb2
+import sys
+import struct
+from gzip import GzipFile
+
+if len(sys.argv) != 2:
+    print "Usage:", sys.argv[0], "tracefile.pb"
+    sys.exit(-1)
+
+trace_event = trace_pb2.Trace_Event()
+
+def open_trace(filename):
+    f = open(filename, "rb")
+    if ord(f.read(1)) == 0x1f and ord(f.read(1)) == 0x8b:
+        f.seek(0,0)
+        return GzipFile(fileobj = f)
+    f.seek(0,0)
+    return f
+
+try:
+    f = open_trace(sys.argv[1])
+except IOError:
+    print sys.argv[1] + ": Could not open file."
+    sys.exit(-1)
+
+while True:
+    # Read trace length
+    try:
+        lengthNO = f.read(4)
+        if len(lengthNO) == 0:
+            break
+    except IOError:
+        print "Could not read data from file"
+
+    # Read Trace-Event
+    length = struct.unpack('!I', lengthNO)[0]
+    trace_event.ParseFromString(f.read(length))
+
+    # This works for any type of pb message:
+    # print trace_event
+
+    # More compact dump for traces:
+    if not trace_event.HasField("memaddr"):
+        print "IP {0:x}".format(trace_event.ip)
+    else:
+        ext = ""
+        if trace_event.HasField("trace_ext"):
+            ext = "DATA {0:x}".format(trace_event.trace_ext.data)
+            for reg in trace_event.trace_ext.registers:
+                ext += " REG: {0} *{1:x}={2:x}".format(reg.id, reg.value, reg.value_deref)
+            if len(trace_event.trace_ext.stack) > 0:
+                ext += " STACK: " + "".join(["%x"%x for x in trace_event.trace_ext.stack])
+        print "MEM {0} {1:x} width {2:d} IP {3:x} {4}".format(
+        "R" if trace_event.accesstype == trace_pb2.Trace_Event.READ else "W",
+        trace_event.memaddr, trace_event.width, trace_event.ip, ext)
+
+f.close()