cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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dtrace.py (1842B)

      1# -*- coding: utf-8 -*-
      2
      3"""
      4DTrace/SystemTAP backend.
      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
     18PUBLIC = True
     19
     20
     21PROBEPREFIX = None
     22
     23def probeprefix():
     24    if PROBEPREFIX is None:
     25        raise ValueError("you must set PROBEPREFIX")
     26    return PROBEPREFIX
     27
     28
     29BINARY = None
     30
     31def binary():
     32    if BINARY is None:
     33        raise ValueError("you must set BINARY")
     34    return BINARY
     35
     36
     37def generate_h_begin(events, group):
     38    if group == "root":
     39        header = "trace-dtrace-root.h"
     40    else:
     41        header = "trace-dtrace-%s.h" % group
     42
     43    # Workaround for ust backend, which also includes <sys/sdt.h> and may
     44    # require SDT_USE_VARIADIC to be defined. If dtrace includes <sys/sdt.h>
     45    # first without defining SDT_USE_VARIADIC then ust breaks because the
     46    # STAP_PROBEV() macro is not defined.
     47    out('#ifndef SDT_USE_VARIADIC')
     48    out('#define SDT_USE_VARIADIC 1')
     49    out('#endif')
     50
     51    out('#include "%s"' % header,
     52        '')
     53
     54    out('#undef SDT_USE_VARIADIC')
     55
     56    # SystemTap defines <provider>_<name>_ENABLED() but other DTrace
     57    # implementations might not.
     58    for e in events:
     59        out('#ifndef QEMU_%(uppername)s_ENABLED',
     60            '#define QEMU_%(uppername)s_ENABLED() true',
     61            '#endif',
     62            uppername=e.name.upper())
     63
     64def generate_h(event, group):
     65    out('    QEMU_%(uppername)s(%(argnames)s);',
     66        uppername=event.name.upper(),
     67        argnames=", ".join(event.args.names()))
     68
     69
     70def generate_h_backend_dstate(event, group):
     71    out('    QEMU_%(uppername)s_ENABLED() || \\',
     72        uppername=event.name.upper())