scripts/tracetool/format/tcg_helper_c.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 """
   5 Generate trace/generated-helpers.c.
   6 """
   7
   8 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   9 __copyright__  = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>"
  10 __license__    = "GPL version 2 or (at your option) any later version"
  11
  12 __maintainer__ = "Stefan Hajnoczi"
  13 __email__      = "stefanha@linux.vnet.ibm.com"
  14
  15
  16 from tracetool import Arguments, out
  17 from tracetool.transform import *
  18 import tracetool.vcpu
  19
  20
  21 def vcpu_transform_args(args, mode):
  22     assert len(args) == 1
  23     # NOTE: this name must be kept in sync with the one in "tcg_h"
  24     args = Arguments([(args.types()[0], "__tcg_" + args.names()[0])])
  25     if mode == "code":
  26         return Arguments([
  27             # Does cast from helper requirements to tracing types
  28             ("CPUState *", "ENV_GET_CPU(%s)" % args.names()[0]),
  29         ])
  30     else:
  31         args = Arguments([
  32             # NOTE: Current helper code uses TCGv_env (CPUArchState*)
  33             ("CPUArchState *", args.names()[0]),
  34         ])
  35         if mode == "header":
  36             return args
  37         elif mode == "wrapper":
  38             return args.transform(HOST_2_TCG)
  39         else:
  40             assert False
  41
  42
  43 def generate(events, backend, group):
  44     events = [e for e in events
  45               if "disable" not in e.properties]
  46
  47     out('/* This file is autogenerated by tracetool, do not edit. */',
  48         '',
  49         '#include "qemu/osdep.h"',
  50         '#include "qemu-common.h"',
  51         '#include "cpu.h"',
  52         '#include "trace.h"',
  53         '#include "exec/helper-proto.h"',
  54         '',
  55         )
  56
  57     for e in events:
  58         if "tcg-exec" not in e.properties:
  59             continue
  60
  61         e_args_api = tracetool.vcpu.transform_args(
  62             "tcg_helper_c", e.original, "header").transform(
  63                 HOST_2_TCG_COMPAT, TCG_2_TCG_HELPER_DEF)
  64         e_args_call = tracetool.vcpu.transform_args(
  65             "tcg_helper_c", e, "code")
  66
  67         out('void %(name_tcg)s(%(args_api)s)',
  68             '{',
  69             '    %(name)s(%(args_call)s);',
  70             '}',
  71             name_tcg="helper_%s_proxy" % e.api(),
  72             name=e.api(),
  73             args_api=e_args_api,
  74             args_call=", ".join(e_args_call.casted()),
  75             )