scripts/tracetool/format/tcg_h.py

   1 # -*- coding: utf-8 -*-
   2
   3 """
   4 Generate .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
  15 from tracetool import out, Arguments
  16 import tracetool.vcpu
  17
  18
  19 def 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
  29 def 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())