@@ -44,6 +44,11 @@ Options:
--help This help message.
--list-backends Print list of available backends.
--check-backend Check if the given backend is valid.
+ --binary <path> Full path to QEMU binary.
+ --target-type <type> QEMU emulator target type ('system' or 'user').
+ --target-arch <arch> QEMU emulator target arch.
+ --probe-prefix <prefix> Prefix for dtrace probe names
+ (default: qemu-<target-type>-<target-arch>).\
""" % {
"script" : _SCRIPT,
"backends" : backend_descr,
@@ -71,6 +76,10 @@ def main(args):
check_backend = False
arg_backend = ""
arg_format = ""
+ binary = None
+ target_type = None
+ target_arch = None
+ probe_prefix = None
for opt, arg in opts:
if opt == "--help":
error_opt()
@@ -87,6 +96,15 @@ def main(args):
elif opt == "--check-backend":
check_backend = True
+ elif opt == "--binary":
+ binary = arg
+ elif opt == '--target-type':
+ target_type = arg
+ elif opt == '--target-arch':
+ target_arch = arg
+ elif opt == '--probe-prefix':
+ probe_prefix = arg
+
else:
error_opt("unhandled option: %s" % opt)
@@ -99,8 +117,20 @@ def main(args):
else:
sys.exit(1)
+ if arg_format == "stap":
+ if binary is None:
+ error_opt("--binary is required for SystemTAP tapset generator")
+ if probe_prefix is None and target_type is None:
+ error_opt("--target-type is required for SystemTAP tapset generator")
+ if probe_prefix is None and target_arch is None:
+ error_opt("--target-arch is required for SystemTAP tapset generator")
+
+ if probe_prefix is None:
+ probe_prefix = ".".join([ "qemu", target_type, target_arch ])
+
try:
- tracetool.generate(sys.stdin, arg_format, arg_backend)
+ tracetool.generate(sys.stdin, arg_format, arg_backend,
+ binary = binary, probe_prefix = probe_prefix)
except tracetool.TracetoolError as e:
error_opt(str(e))
@@ -212,7 +212,8 @@ def try_import(mod_name, attr_name = None, attr_default = None):
return False, None
-def generate(fevents, format, backend):
+def generate(fevents, format, backend,
+ binary = None, probe_prefix = None):
"""Generate the output for the given (format, backend) pair.
Parameters
@@ -223,6 +224,10 @@ def generate(fevents, format, backend):
Output format name.
backend : str
Output backend name.
+ binary : str or None
+ See tracetool.backend.dtrace.BINARY.
+ probe_prefix : str or None
+ See tracetool.backend.dtrace.PROBEPREFIX.
"""
# fix strange python error (UnboundLocalError tracetool)
import tracetool
@@ -245,6 +250,10 @@ def generate(fevents, format, backend):
raise TracetoolError("backend '%s' not compatible with format '%s'" %
(backend, format))
+ import tracetool.backend.dtrace
+ tracetool.backend.dtrace.BINARY = binary
+ tracetool.backend.dtrace.PROBEPREFIX = probe_prefix
+
events = _read_events(fevents)
if backend == "nop":
new file mode 100644
@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+DTrace/SystemTAP backend.
+"""
+
+__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
+__copyright__ = "Copyright 2012, 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
+
+
+PROBEPREFIX = None
+
+def _probeprefix():
+ if PROBEPREFIX is None:
+ raise ValueError("you must set PROBEPREFIX")
+ return PROBEPREFIX
+
+
+BINARY = None
+
+def _binary():
+ if BINARY is None:
+ raise ValueError("you must set BINARY")
+ return BINARY
+
+
+def c(events):
+ pass
+
+
+def h(events):
+ out('#include "trace-dtrace.h"',
+ '')
+
+ for e in events:
+ out('static inline void trace_%(name)s(%(args)s) {',
+ ' QEMU_%(uppername)s(%(argnames)s);',
+ '}',
+ name = e.name,
+ args = e.args,
+ uppername = e.name.upper(),
+ argnames = ", ".join(e.args.names()),
+ )
+
+
+def d(events):
+ out('provider qemu {')
+
+ for e in events:
+ args = str(e.args)
+
+ # DTrace provider syntax expects foo() for empty
+ # params, not foo(void)
+ if args == 'void':
+ args = ''
+
+ # Define prototype for probe arguments
+ out('',
+ 'probe %(name)s(%(args)s);',
+ name = e.name,
+ args = args,
+ )
+
+ out('',
+ '};')
+
+
+def stap(events):
+ 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():
+ # 'limit' is a reserved keyword
+ if name == 'limit':
+ name = '_limit'
+ out(' %s = $arg%d;' % (name.lstrip(), i))
+ i += 1
+
+ out('}')
+
+ out()
new file mode 100644
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Generate .d file (DTrace only).
+"""
+
+__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
+__copyright__ = "Copyright 2012, 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
+
+
+def begin(events):
+ out('/* This file is autogenerated by tracetool, do not edit. */')
new file mode 100644
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Generate .stp file (DTrace with SystemTAP only).
+"""
+
+__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
+__copyright__ = "Copyright 2012, 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
+
+
+def begin(events):
+ out('/* This file is autogenerated by tracetool, do not edit. */')
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> --- scripts/tracetool.py | 32 +++++++++++- scripts/tracetool/__init__.py | 11 ++++ scripts/tracetool/backend/dtrace.py | 97 +++++++++++++++++++++++++++++++++++ scripts/tracetool/format/d.py | 20 +++++++ scripts/tracetool/format/stap.py | 20 +++++++ 5 files changed, 178 insertions(+), 2 deletions(-) create mode 100644 scripts/tracetool/backend/dtrace.py create mode 100644 scripts/tracetool/format/d.py create mode 100644 scripts/tracetool/format/stap.py