reactos/dll/opengl/mesa/src/mapi/glapi/gen/gl_gentable.py

   1 #!/usr/bin/env python
   2
   3 # (C) Copyright IBM Corporation 2004, 2005
   4 # (C) Copyright Apple Inc. 2011
   5 # All Rights Reserved.
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a
   8 # copy of this software and associated documentation files (the "Software"),
   9 # to deal in the Software without restriction, including without limitation
  10 # on the rights to use, copy, modify, merge, publish, distribute, sub
  11 # license, and/or sell copies of the Software, and to permit persons to whom
  12 # the Software is furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice (including the next
  15 # paragraph) shall be included in all copies or substantial portions of the
  16 # Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  21 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  24 # IN THE SOFTWARE.
  25 #
  26 # Authors:
  27 #    Jeremy Huddleston <jeremyhu@apple.com>
  28 #
  29 # Based on code ogiginally by:
  30 #    Ian Romanick <idr@us.ibm.com>
  31
  32 import license
  33 import gl_XML, glX_XML
  34 import sys, getopt
  35
  36 header = """/* GLXEXT is the define used in the xserver when the GLX extension is being
  37  * built.  Hijack this to determine whether this file is being built for the
  38  * server or the client.
  39  */
  40 #ifdef HAVE_DIX_CONFIG_H
  41 #include <dix-config.h>
  42 #endif
  43
  44 #if (defined(GLXEXT) && defined(HAVE_BACKTRACE)) \\
  45         || (!defined(GLXEXT) && defined(DEBUG) && !defined(_WIN32_WCE))
  46 #define USE_BACKTRACE
  47 #endif
  48
  49 #ifdef USE_BACKTRACE
  50 #include <execinfo.h>
  51 #endif
  52
  53 #include <dlfcn.h>
  54 #include <stdlib.h>
  55 #include <stdio.h>
  56
  57 #include <GL/gl.h>
  58
  59 #include "glapi.h"
  60 #include "glapitable.h"
  61
  62 #ifdef GLXEXT
  63 #include "os.h"
  64 #endif
  65
  66 static void
  67 __glapi_gentable_NoOp(void) {
  68     const char *fstr = "Unknown";
  69
  70     /* Silence potential GCC warning for some #ifdef paths.
  71      */
  72     (void) fstr;
  73 #if defined(USE_BACKTRACE)
  74 #if !defined(GLXEXT)
  75     if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))
  76 #endif
  77     {
  78         void *frames[2];
  79
  80         if(backtrace(frames, 2) == 2) {
  81             Dl_info info;
  82             dladdr(frames[1], &info);
  83             if(info.dli_sname)
  84                 fstr = info.dli_sname;
  85         }
  86
  87 #if !defined(GLXEXT)
  88         fprintf(stderr, "Call to unimplemented API: %s\\n", fstr);
  89 #endif
  90     }
  91 #endif
  92 #if defined(GLXEXT)
  93     LogMessage(X_ERROR, "GLX: Call to unimplemented API: %s\\n", fstr);
  94 #endif
  95 }
  96
  97 static void
  98 __glapi_gentable_set_remaining_noop(struct _glapi_table *disp) {
  99     GLuint entries = _glapi_get_dispatch_table_size();
 100     void **dispatch = (void **) disp;
 101     int i;
 102
 103     /* ISO C is annoying sometimes */
 104     union {_glapi_proc p; void *v;} p;
 105     p.p = __glapi_gentable_NoOp;
 106
 107     for(i=0; i < entries; i++)
 108         if(dispatch[i] == NULL)
 109             dispatch[i] = p.v;
 110 }
 111
 112 struct _glapi_table *
 113 _glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {
 114     struct _glapi_table *disp = calloc(1, sizeof(struct _glapi_table));
 115     char symboln[512];
 116
 117     if(!disp)
 118         return NULL;
 119
 120     if(symbol_prefix == NULL)
 121         symbol_prefix = "";
 122 """
 123
 124 footer = """
 125     __glapi_gentable_set_remaining_noop(disp);
 126
 127     return disp;
 128 }
 129 """
 130
 131 body_template = """
 132     if(!disp->%(name)s) {
 133         void ** procp = (void **) &disp->%(name)s;
 134         snprintf(symboln, sizeof(symboln), "%%s%(entry_point)s", symbol_prefix);
 135         *procp = dlsym(handle, symboln);
 136     }
 137 """
 138
 139 class PrintCode(gl_XML.gl_print_base):
 140
 141         def __init__(self):
 142                 gl_XML.gl_print_base.__init__(self)
 143
 144                 self.name = "gl_gen_table.py (from Mesa)"
 145                 self.license = license.bsd_license_template % ( \
 146 """Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
 147 (C) Copyright IBM Corporation 2004, 2005
 148 (C) Copyright Apple Inc 2011""", "BRIAN PAUL, IBM")
 149
 150                 return
 151
 152
 153         def get_stack_size(self, f):
 154                 size = 0
 155                 for p in f.parameterIterator():
 156                         if p.is_padding:
 157                                 continue
 158
 159                         size += p.get_stack_size()
 160
 161                 return size
 162
 163
 164         def printRealHeader(self):
 165                 print header
 166                 return
 167
 168
 169         def printRealFooter(self):
 170                 print footer
 171                 return
 172
 173
 174         def printBody(self, api):
 175                 for f in api.functionIterateByOffset():
 176                         for entry_point in f.entry_points:
 177                                 vars = { 'entry_point' : entry_point,
 178                                          'name' : f.name }
 179
 180                                 print body_template % vars
 181                 return
 182
 183 def show_usage():
 184         print "Usage: %s [-f input_file_name]" % sys.argv[0]
 185         sys.exit(1)
 186
 187 if __name__ == '__main__':
 188         file_name = "gl_API.xml"
 189
 190         try:
 191                 (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
 192         except Exception,e:
 193                 show_usage()
 194
 195         for (arg,val) in args:
 196                 if arg == "-f":
 197                         file_name = val
 198
 199         printer = PrintCode()
 200
 201         api = gl_XML.parse_GL_API(file_name, glX_XML.glx_item_factory())
 202         printer.Print(api)