utils/generate_wrapper_macros.py

   1 #!/usr/bin/python
   2 #
   3 # Generate wrapper macros: hybris/include/hybris/internal/binding.h
   4 #
   5 # Usage:
   6 # python utils/generate_wrapper_macros.py >hybris/include/hybris/internal/binding.h
   7 #
   8 # Copyright (C) 2013 Jolla Ltd.
   9 # Contact: Thomas Perl <thomas.perl@jollamobile.com>
  10 #
  11 # Redistribution and use in source and binary forms, with or without
  12 # modification, are permitted provided that the following conditions are met:
  13 #
  14 # 1. Redistributions of source code must retain the above copyright notice, this
  15 #    list of conditions and the following disclaimer.
  16 # 2. Redistributions in binary form must reproduce the above copyright notice,
  17 #    this list of conditions and the following disclaimer in the documentation
  18 #    and/or other materials provided with the distribution.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  23 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  24 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  27 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30 #
  31
  32 # Maximum number of arguments to generate wrapper macros for
  33 MAX_ARGS = 20
  34
  35 BEGIN, END = '{', '}'
  36
  37 AUTO_GENERATED_WARNING = """
  38 /**
  39  *         XXX AUTO-GENERATED FILE XXX
  40  *
  41  * Do not edit this file directly, but update the templates in
  42  * utils/generate_wrapper_macros.py and run it again to build
  43  * an updated version of this header file:
  44  *
  45  *    python utils/generate_wrapper_macros.py > \\
  46  *       hybris/include/hybris/internal/binding.h
  47  *
  48  * If you need macros with more arguments, just customize the
  49  * MAX_ARGS variable in generate_wrapper_macros.py.
  50  *
  51  *         XXX AUTO-GENERATED FILE XXX
  52  **/
  53 """
  54
  55 print """
  56 /**
  57  * Copyright (C) 2013 Simon Busch <morphis@gravedo.de>
  58  *               2012 Canonical Ltd
  59  *               2013 Jolla Ltd.
  60  *
  61  * Auto-generated via "generate_wrapper_macros.py"
  62  *
  63  * Licensed under the Apache License, Version 2.0 (the "License");
  64  * you may not use this file except in compliance with the License.
  65  * You may obtain a copy of the License at
  66  *
  67  *      http://www.apache.org/licenses/LICENSE-2.0
  68  *
  69  * Unless required by applicable law or agreed to in writing, software
  70  * distributed under the License is distributed on an "AS IS" BASIS,
  71  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  72  * See the License for the specific language governing permissions and
  73  * limitations under the License.
  74  **/
  75
  76 #ifndef HYBRIS_BINDING_H_
  77 #define HYBRIS_BINDING_H_
  78
  79 /* floating_point_abi.h defines FP_ATTRIB */
  80 #include <hybris/internal/floating_point_abi.h>
  81
  82 void *android_dlopen(const char *filename, int flag);
  83 void *android_dlsym(void *name, const char *symbol);
  84 int android_dlclose(void *handle);
  85 const char *android_dlerror(void);
  86 int android_dladdr(const void *addr, void *info);
  87 """
  88
  89 print AUTO_GENERATED_WARNING
  90
  91 print """
  92 #define HYBRIS_DLSYSM(name, fptr, sym) \\
  93     if (!name##_handle) \\
  94         hybris_##name##_initialize(); \\
  95     if (*(fptr) == NULL) \\
  96     { \\
  97         *(fptr) = (void *) android_dlsym(name##_handle, sym); \\
  98     }
  99
 100 #define HYBRIS_LIBRARY_INITIALIZE(name, path) \\
 101     void *name##_handle; \\
 102     void hybris_##name##_initialize() \\
 103     { \\
 104         name##_handle = android_dlopen(path, RTLD_LAZY); \\
 105     }
 106
 107 """
 108
 109 for count in range(MAX_ARGS):
 110     args = ['a%d' % (x+1) for x in range(count)]
 111     names = ['n%d' % (x+1) for x in range(count)]
 112     wrapper_signature = ', '.join(['name', 'return_type', 'symbol'] + args)
 113     signature = ', '.join(args)
 114     signature_with_names = ', '.join(' '.join(x) for x in zip(args, names))
 115     call_names = ', '.join(names)
 116
 117     print """
 118 #define HYBRIS_IMPLEMENT_FUNCTION{count}({wrapper_signature}) \\
 119     return_type symbol({signature_with_names}) \\
 120     {BEGIN} \\
 121         static return_type (*f)({signature}) FP_ATTRIB = NULL; \\
 122         HYBRIS_DLSYSM(name, &f, #symbol); \\
 123         return f({call_names}); \\
 124     {END}
 125 """.format(**locals())
 126
 127 for count in range(MAX_ARGS):
 128     args = ['a%d' % (x+1) for x in range(count)]
 129     names = ['n%d' % (x+1) for x in range(count)]
 130     wrapper_signature = ', '.join(['name', 'symbol'] + args)
 131     signature = ', '.join(args)
 132     signature_with_names = ', '.join(' '.join(x) for x in zip(args, names))
 133     call_names = ', '.join(names)
 134     print """
 135 #define HYBRIS_IMPLEMENT_VOID_FUNCTION{count}({wrapper_signature}) \\
 136     void symbol({signature_with_names}) \\
 137     {BEGIN} \\
 138         static void (*f)({signature}) FP_ATTRIB = NULL; \\
 139         HYBRIS_DLSYSM(name, &f, #symbol); \\
 140         f({call_names}); \\
 141     {END}
 142 """.format(**locals())
 143
 144 # Print it again, so people wanting to append new macros will see it
 145 print AUTO_GENERATED_WARNING
 146
 147 print """
 148 #endif /* HYBRIS_BINDING_H_ */
 149 """
 150