From 3f2546b2ef55b661fd8dd69682b38992225e86f6 Mon Sep 17 00:00:00 2001 From: fishsoupisgood Date: Mon, 29 Apr 2019 01:17:54 +0100 Subject: Initial import of qemu-2.4.1 --- scripts/tracetool/format/stap.py | 61 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 scripts/tracetool/format/stap.py (limited to 'scripts/tracetool/format/stap.py') diff --git a/scripts/tracetool/format/stap.py b/scripts/tracetool/format/stap.py new file mode 100644 index 00000000..9e780f1b --- /dev/null +++ b/scripts/tracetool/format/stap.py @@ -0,0 +1,61 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +""" +Generate .stp file (DTrace with SystemTAP only). +""" + +__author__ = "Lluís Vilanova " +__copyright__ = "Copyright 2012-2014, Lluís Vilanova " +__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.backend.dtrace import binary, probeprefix + + +# Technically 'self' is not used by systemtap yet, but +# they recommended we keep it in the reserved list anyway +RESERVED_WORDS = ( + 'break', 'catch', 'continue', 'delete', 'else', 'for', + 'foreach', 'function', 'global', 'if', 'in', 'limit', + 'long', 'next', 'probe', 'return', 'self', 'string', + 'try', 'while' + ) + + +def stap_escape(identifier): + # Append underscore to reserved keywords + if identifier in RESERVED_WORDS: + return identifier + '_' + return identifier + + +def generate(events, backend): + 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: + # Define prototype for probe arguments + out('probe %(probeprefix)s.%(name)s = process("%(binary)s").mark("%(name)s")', + '{', + probeprefix=probeprefix(), + name=e.name, + binary=binary()) + + i = 1 + if len(e.args) > 0: + for name in e.args.names(): + name = stap_escape(name) + out(' %s = $arg%d;' % (name, i)) + i += 1 + + out('}') + + out() -- cgit v1.2.3