xref: /openbmc/qemu/scripts/tracetool/format/h.py (revision 80adf54e) 
1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4"""
5trace/generated-tracers.h
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
19def generate(events, backend, group):
20    out('/* This file is autogenerated by tracetool, do not edit. */',
21        '',
22        '#ifndef TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
23        '#define TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
24        '',
25        '#include "qemu-common.h"',
26        '#include "trace/control.h"',
27        '')
28
29    for e in events:
30        out('extern TraceEvent %(event)s;',
31            event = e.api(e.QEMU_EVENT))
32
33    for e in events:
34        out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE))
35
36    # static state
37    for e in events:
38        if 'disable' in e.properties:
39            enabled = 0
40        else:
41            enabled = 1
42        if "tcg-exec" in e.properties:
43            # a single define for the two "sub-events"
44            out('#define TRACE_%(name)s_ENABLED %(enabled)d',
45                name=e.original.name.upper(),
46                enabled=enabled)
47        out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
48
49    backend.generate_begin(events, group)
50
51    for e in events:
52        # tracer-specific dstate
53        out('',
54            '#define %(api)s() ( \\',
55            api=e.api(e.QEMU_BACKEND_DSTATE))
56
57        if "disable" not in e.properties:
58            backend.generate_backend_dstate(e, group)
59
60        out('    false)')
61
62        # tracer without checks
63        out('',
64            'static inline void %(api)s(%(args)s)',
65            '{',
66            api=e.api(e.QEMU_TRACE_NOCHECK),
67            args=e.args)
68
69        if "disable" not in e.properties:
70            backend.generate(e, group)
71
72        out('}')
73
74        # tracer wrapper with checks (per-vCPU tracing)
75        if "vcpu" in e.properties:
76            trace_cpu = next(iter(e.args))[1]
77            cond = "trace_event_get_vcpu_state(%(cpu)s,"\
78                   " TRACE_%(id)s)"\
79                   % dict(
80                       cpu=trace_cpu,
81                       id=e.name.upper())
82        else:
83            cond = "true"
84
85        out('',
86            'static inline void %(api)s(%(args)s)',
87            '{',
88            '    if (%(cond)s) {',
89            '        %(api_nocheck)s(%(names)s);',
90            '    }',
91            '}',
92            api=e.api(),
93            api_nocheck=e.api(e.QEMU_TRACE_NOCHECK),
94            args=e.args,
95            names=", ".join(e.args.names()),
96            cond=cond)
97
98    backend.generate_end(events, group)
99
100    out('#endif /* TRACE_%s_GENERATED_TRACERS_H */' % group.upper())
101