jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4"""
5DTrace/SystemTAP backend.
6"""
7
8__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
9__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
10__license__ = "GPL version 2 or (at your option) any later version"
11
12__maintainer__ = "Stefan Hajnoczi"
13__email__ = "stefanha@linux.vnet.ibm.com"
14
15
16from tracetool import out
17
18
19PUBLIC = True
20
21
22PROBEPREFIX = None
23
24def probeprefix():
25 if PROBEPREFIX is None:
26 raise ValueError("you must set PROBEPREFIX")
27 return PROBEPREFIX
28
29
30BINARY = None
31
32def binary():
33 if BINARY is None:
34 raise ValueError("you must set BINARY")
35 return BINARY
36
37
38def generate_h_begin(events, group):
39 if group == "root":
40 header = "trace-dtrace-root.h"
41 else:
42 header = "trace-dtrace.h"
43
44 out('#include "%s"' % header,
45 '')
46
47 # SystemTap defines <provider>_<name>_ENABLED() but other DTrace
48 # implementations might not.
49 for e in events:
50 out('#ifndef QEMU_%(uppername)s_ENABLED',
51 '#define QEMU_%(uppername)s_ENABLED() true',
52 '#endif',
53 uppername=e.name.upper())
54
55def generate_h(event, group):
56 out(' QEMU_%(uppername)s(%(argnames)s);',
57 uppername=event.name.upper(),
58 argnames=", ".join(event.args.names()))
59
60
61def generate_h_backend_dstate(event, group):
62 out(' QEMU_%(uppername)s_ENABLED() || \\',
63 uppername=event.name.upper())