scripts/tracetool/format/tcg_helper_wrapper_h.py

   1 # -*- coding: utf-8 -*-
   2
   3 """
   4 Generate trace/generated-helpers-wrappers.h.
   5 """
   6
   7 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   8 __copyright__  = "Copyright 2012-2016, 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
  16 from tracetool.transform import *
  17 import tracetool.vcpu
  18
  19
  20 def generate(events, backend, group):
  21     events = [e for e in events
  22               if "disable" not in e.properties]
  23
  24     out('/* This file is autogenerated by tracetool, do not edit. */',
  25         '',
  26         '#define tcg_temp_new_nop(v) (v)',
  27         '#define tcg_temp_free_nop(v)',
  28         '',
  29         )
  30
  31     for e in events:
  32         if "tcg-exec" not in e.properties:
  33             continue
  34
  35         # tracetool.generate always transforms types to host
  36         e_args = tracetool.vcpu.transform_args("tcg_helper_c", e.original, "wrapper")
  37
  38         # mixed-type to TCG helper bridge
  39         args_tcg_compat = e_args.transform(HOST_2_TCG_COMPAT)
  40
  41         code_new = [
  42             "%(tcg_type)s __%(name)s = %(tcg_func)s(%(name)s);" %
  43             {"tcg_type": transform_type(type_, HOST_2_TCG),
  44              "tcg_func": transform_type(type_, HOST_2_TCG_TMP_NEW),
  45              "name": name}
  46             for (type_, name) in args_tcg_compat
  47         ]
  48
  49         code_free = [
  50             "%(tcg_func)s(__%(name)s);" %
  51             {"tcg_func": transform_type(type_, HOST_2_TCG_TMP_FREE),
  52              "name": name}
  53             for (type_, name) in args_tcg_compat
  54         ]
  55
  56         gen_name = "gen_helper_" + e.api()
  57
  58         out('static inline void %(name)s(%(args)s)',
  59             '{',
  60             '    %(code_new)s',
  61             '    %(proxy_name)s(%(tmp_names)s);',
  62             '    %(code_free)s',
  63             '}',
  64             name=gen_name,
  65             args=e_args,
  66             proxy_name=gen_name + "_proxy",
  67             code_new="\n    ".join(code_new),
  68             code_free="\n    ".join(code_free),
  69             tmp_names=", ".join(["__%s" % name for _, name in e_args]),
  70             )