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

d.py (2649B)

      1# -*- coding: utf-8 -*-
      2
      3"""
      4trace/generated-tracers.dtrace (DTrace only).
      5"""
      6
      7__author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
      8__copyright__  = "Copyright 2012-2014, 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
     16from sys import platform
     17
     18
     19# Reserved keywords from
     20# https://wikis.oracle.com/display/DTrace/Types,+Operators+and+Expressions
     21RESERVED_WORDS = (
     22    'auto', 'goto', 'sizeof', 'break', 'if', 'static', 'case', 'import',
     23    'string', 'char', 'inline', 'stringof', 'const', 'int', 'struct',
     24    'continue', 'long', 'switch', 'counter', 'offsetof', 'this',
     25    'default', 'probe', 'translator', 'do', 'provider', 'typedef',
     26    'double', 'register', 'union', 'else', 'restrict', 'unsigned',
     27    'enum', 'return', 'void', 'extern', 'self', 'volatile', 'float',
     28    'short', 'while', 'for', 'signed', 'xlate',
     29)
     30
     31
     32def generate(events, backend, group):
     33    events = [e for e in events
     34              if "disable" not in e.properties]
     35
     36    # SystemTap's dtrace(1) warns about empty "provider qemu {}" but is happy
     37    # with an empty file.  Avoid the warning.
     38    # But dtrace on macOS can't deal with empty files.
     39    if not events and platform != "darwin":
     40        return
     41
     42    out('/* This file is autogenerated by tracetool, do not edit. */'
     43        '',
     44        'provider qemu {')
     45
     46    for e in events:
     47        args = []
     48        for type_, name in e.args:
     49            if platform == "darwin":
     50                # macOS dtrace accepts only C99 _Bool
     51                if type_ == 'bool':
     52                    type_ = '_Bool'
     53                if type_ == 'bool *':
     54                    type_ = '_Bool *'
     55                # It converts int8_t * in probe points to char * in header
     56                # files and introduces [-Wpointer-sign] warning.
     57                # Avoid it by changing probe type to signed char * beforehand.
     58                if type_ == 'int8_t *':
     59                    type_ = 'signed char *'
     60
     61            # SystemTap dtrace(1) emits a warning when long long is used
     62            type_ = type_.replace('unsigned long long', 'uint64_t')
     63            type_ = type_.replace('signed long long', 'int64_t')
     64            type_ = type_.replace('long long', 'int64_t')
     65
     66            if name in RESERVED_WORDS:
     67                name += '_'
     68            args.append(type_ + ' ' + name)
     69
     70        # Define prototype for probe arguments
     71        out('',
     72            'probe %(name)s(%(args)s);',
     73            name=e.name,
     74            args=','.join(args))
     75
     76    out('',
     77        '};')