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

tcg_h.py (2747B)

      1# -*- coding: utf-8 -*-
      2
      3"""
      4Generate .h file for TCG code generation.
      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, Arguments
     16import tracetool.vcpu
     17
     18
     19def vcpu_transform_args(args):
     20    assert len(args) == 1
     21    return Arguments([
     22        args,
     23        # NOTE: this name must be kept in sync with the one in "tcg_h"
     24        # NOTE: Current helper code uses TCGv_env (CPUArchState*)
     25        ("TCGv_env", "__tcg_" + args.names()[0]),
     26    ])
     27
     28
     29def generate(events, backend, group):
     30    if group == "root":
     31        header = "trace/trace-root.h"
     32    else:
     33        header = "trace.h"
     34
     35    out('/* This file is autogenerated by tracetool, do not edit. */',
     36        '/* You must include this file after the inclusion of helper.h */',
     37        '',
     38        '#ifndef TRACE_%s_GENERATED_TCG_TRACERS_H' % group.upper(),
     39        '#define TRACE_%s_GENERATED_TCG_TRACERS_H' % group.upper(),
     40        '',
     41        '#include "exec/helper-proto.h"',
     42        '#include "%s"' % header,
     43        '',
     44        )
     45
     46    for e in events:
     47        # just keep one of them
     48        if "tcg-exec" not in e.properties:
     49            continue
     50
     51        out('static inline void %(name_tcg)s(%(args)s)',
     52            '{',
     53            name_tcg=e.original.api(e.QEMU_TRACE_TCG),
     54            args=tracetool.vcpu.transform_args("tcg_h", e.original))
     55
     56        if "disable" not in e.properties:
     57            args_trans = e.original.event_trans.args
     58            args_exec = tracetool.vcpu.transform_args(
     59                "tcg_helper_c", e.original.event_exec, "wrapper")
     60            if "vcpu" in e.properties:
     61                trace_cpu = e.args.names()[0]
     62                cond = "trace_event_get_vcpu_state(%(cpu)s,"\
     63                       " TRACE_%(id)s)"\
     64                       % dict(
     65                           cpu=trace_cpu,
     66                           id=e.original.event_exec.name.upper())
     67            else:
     68                cond = "true"
     69
     70            out('    %(name_trans)s(%(argnames_trans)s);',
     71                '    if (%(cond)s) {',
     72                '        gen_helper_%(name_exec)s(%(argnames_exec)s);',
     73                '    }',
     74                name_trans=e.original.event_trans.api(e.QEMU_TRACE),
     75                name_exec=e.original.event_exec.api(e.QEMU_TRACE),
     76                argnames_trans=", ".join(args_trans.names()),
     77                argnames_exec=", ".join(args_exec.names()),
     78                cond=cond)
     79
     80        out('}')
     81
     82    out('',
     83        '#endif /* TRACE_%s_GENERATED_TCG_TRACERS_H */' % group.upper())