cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

h.py (2904B)

      1# -*- coding: utf-8 -*-
      2
      3"""
      4trace/generated-tracers.h
      5"""
      6
      7__author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
      8__copyright__  = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
      9__license__    = "GPL version 2 or (at your option) any later version"
     10
     11__maintainer__ = "Stefan Hajnoczi"
     12__email__      = "stefanha@redhat.com"
     13
     14
     15from tracetool import out
     16
     17
     18def generate(events, backend, group):
     19    if group == "root":
     20        header = "trace/control-vcpu.h"
     21    else:
     22        header = "trace/control.h"
     23
     24    out('/* This file is autogenerated by tracetool, do not edit. */',
     25        '',
     26        '#ifndef TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
     27        '#define TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
     28        '',
     29        '#include "%s"' % header,
     30        '')
     31
     32    for e in events:
     33        out('extern TraceEvent %(event)s;',
     34            event = e.api(e.QEMU_EVENT))
     35
     36    for e in events:
     37        out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE))
     38
     39    # static state
     40    for e in events:
     41        if 'disable' in e.properties:
     42            enabled = 0
     43        else:
     44            enabled = 1
     45        if "tcg-exec" in e.properties:
     46            # a single define for the two "sub-events"
     47            out('#define TRACE_%(name)s_ENABLED %(enabled)d',
     48                name=e.original.name.upper(),
     49                enabled=enabled)
     50        out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
     51
     52    backend.generate_begin(events, group)
     53
     54    for e in events:
     55        # tracer-specific dstate
     56        out('',
     57            '#define %(api)s() ( \\',
     58            api=e.api(e.QEMU_BACKEND_DSTATE))
     59
     60        if "disable" not in e.properties:
     61            backend.generate_backend_dstate(e, group)
     62
     63        out('    false)')
     64
     65        # tracer without checks
     66        out('',
     67            'static inline void %(api)s(%(args)s)',
     68            '{',
     69            api=e.api(e.QEMU_TRACE_NOCHECK),
     70            args=e.args)
     71
     72        if "disable" not in e.properties:
     73            backend.generate(e, group)
     74
     75        out('}')
     76
     77        # tracer wrapper with checks (per-vCPU tracing)
     78        if "vcpu" in e.properties:
     79            trace_cpu = next(iter(e.args))[1]
     80            cond = "trace_event_get_vcpu_state(%(cpu)s,"\
     81                   " TRACE_%(id)s)"\
     82                   % dict(
     83                       cpu=trace_cpu,
     84                       id=e.name.upper())
     85        else:
     86            cond = "true"
     87
     88        out('',
     89            'static inline void %(api)s(%(args)s)',
     90            '{',
     91            '    if (%(cond)s) {',
     92            '        %(api_nocheck)s(%(names)s);',
     93            '    }',
     94            '}',
     95            api=e.api(),
     96            api_nocheck=e.api(e.QEMU_TRACE_NOCHECK),
     97            args=e.args,
     98            names=", ".join(e.args.names()),
     99            cond=cond)
    100
    101    backend.generate_end(events, group)
    102
    103    out('#endif /* TRACE_%s_GENERATED_TRACERS_H */' % group.upper())