qemu/scripts/tracetool/format/tcg_helper_h.py
Daniel P. Berrange 80dd5c4918 trace: introduce a formal group name for trace events
The declarations in the generated-tracers.h file are
assuming there's only ever going to be one instance
of this header, as they are not namespaced. When we
have one header per event group, if a single source
file needs to include multiple sets of trace events,
the symbols will all clash.

This change thus introduces a '--group NAME' arg to the
'tracetool' program. This will cause all the symbols in
the generated header files to be given a unique namespace.

If no group is given, the group name 'common' is used,
which is suitable for the current usage where there is
only one global trace-events file used for code generation.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 1475588159-30598-21-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-10-12 09:54:53 +02:00

50 lines
1.3 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Generate trace/generated-helpers.h.
"""
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
__copyright__ = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>"
__license__ = "GPL version 2 or (at your option) any later version"
__maintainer__ = "Stefan Hajnoczi"
__email__ = "stefanha@linux.vnet.ibm.com"
from tracetool import out
from tracetool.transform import *
import tracetool.vcpu
def generate(events, backend, group):
events = [e for e in events
if "disable" not in e.properties]
out('/* This file is autogenerated by tracetool, do not edit. */',
'',
)
for e in events:
if "tcg-exec" not in e.properties:
continue
# TCG helper proxy declaration
fmt = "DEF_HELPER_FLAGS_%(argc)d(%(name)s, %(flags)svoid%(types)s)"
e_args = tracetool.vcpu.transform_args("tcg_helper_c", e.original, "header")
args = e_args.transform(HOST_2_TCG_COMPAT, HOST_2_TCG,
TCG_2_TCG_HELPER_DECL)
types = ", ".join(args.types())
if types != "":
types = ", " + types
flags = "TCG_CALL_NO_RWG, "
out(fmt,
flags=flags,
argc=len(args),
name=e.api() + "_proxy",
types=types,
)