scripts/tracetool/format/tcg_helper_wrapper_h.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 """
   5 Generate trace/generated-helpers-wrappers.h.
   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 out
  17 from tracetool.transform import *
  18 import tracetool.vcpu
  19
  20
  21 def generate(events, backend, group):
  22     events = [e for e in events
  23               if "disable" not in e.properties]
  24
  25     out('/* This file is autogenerated by tracetool, do not edit. */',
  26         '',
  27         '#define tcg_temp_new_nop(v) (v)',
  28         '#define tcg_temp_free_nop(v)',
  29         '',
  30         )
  31
  32     for e in events:
  33         if "tcg-exec" not in e.properties:
  34             continue
  35
  36         # tracetool.generate always transforms types to host
  37         e_args = tracetool.vcpu.transform_args("tcg_helper_c", e.original, "wrapper")
  38
  39         # mixed-type to TCG helper bridge
  40         args_tcg_compat = e_args.transform(HOST_2_TCG_COMPAT)
  41
  42         code_new = [
  43             "%(tcg_type)s __%(name)s = %(tcg_func)s(%(name)s);" %
  44             {"tcg_type": transform_type(type_, HOST_2_TCG),
  45              "tcg_func": transform_type(type_, HOST_2_TCG_TMP_NEW),
  46              "name": name}
  47             for (type_, name) in args_tcg_compat
  48         ]
  49
  50         code_free = [
  51             "%(tcg_func)s(__%(name)s);" %
  52             {"tcg_func": transform_type(type_, HOST_2_TCG_TMP_FREE),
  53              "name": name}
  54             for (type_, name) in args_tcg_compat
  55         ]
  56
  57         gen_name = "gen_helper_" + e.api()
  58
  59         out('static inline void %(name)s(%(args)s)',
  60             '{',
  61             '    %(code_new)s',
  62             '    %(proxy_name)s(%(tmp_names)s);',
  63             '    %(code_free)s',
  64             '}',
  65             name=gen_name,
  66             args=e_args,
  67             proxy_name=gen_name + "_proxy",
  68             code_new="\n    ".join(code_new),
  69             code_free="\n    ".join(code_free),
  70             tmp_names=", ".join(["__%s" % name for _, name in e_args]),
  71             )