summaryrefslogtreecommitdiff
path: root/src/mapi/glapi/gen/gl_gentable.py
blob: a3c98982f807fd032eb9adb4f705f81a242e70fd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
#!/usr/bin/env python

# (C) Copyright IBM Corporation 2004, 2005
# (C) Copyright Apple Inc. 2011
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# on the rights to use, copy, modify, merge, publish, distribute, sub
# license, and/or sell copies of the Software, and to permit persons to whom
# the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# Authors:
#    Jeremy Huddleston <jeremyhu@apple.com>
#
# Based on code ogiginally by:
#    Ian Romanick <idr@us.ibm.com>

import license
import gl_XML, glX_XML
import sys, getopt

header = """/* GLXEXT is the define used in the xserver when the GLX extension is being
 * built.  Hijack this to determine whether this file is being built for the
 * server or the client.
 */
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#if (defined(GLXEXT) && defined(HAVE_BACKTRACE)) \\
	|| (!defined(GLXEXT) && defined(DEBUG) && !defined(_WIN32_WCE) && !defined(__CYGWIN__) && !defined(__MINGW32__))
#define USE_BACKTRACE
#endif

#ifdef USE_BACKTRACE
#include <execinfo.h>
#endif

#include <dlfcn.h>
#include <stdlib.h>
#include <stdio.h>

#include "main/glheader.h"

#include "glapi.h"
#include "glapitable.h"

#ifdef GLXEXT
#include "os.h"
#endif

static void
__glapi_gentable_NoOp(void) {
    const char *fstr = "Unknown";

    /* Silence potential GCC warning for some #ifdef paths.
     */
    (void) fstr;
#if defined(USE_BACKTRACE)
#if !defined(GLXEXT)
    if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))
#endif
    {
        void *frames[2];

        if(backtrace(frames, 2) == 2) {
            Dl_info info;
            dladdr(frames[1], &info);
            if(info.dli_sname)
                fstr = info.dli_sname;
        }

#if !defined(GLXEXT)
        fprintf(stderr, "Call to unimplemented API: %s\\n", fstr);
#endif
    }
#endif
#if defined(GLXEXT)
    LogMessage(X_ERROR, "GLX: Call to unimplemented API: %s\\n", fstr);
#endif
}

static void
__glapi_gentable_set_remaining_noop(struct _glapi_table *disp) {
    GLuint entries = _glapi_get_dispatch_table_size();
    void **dispatch = (void **) disp;
    int i;

    /* ISO C is annoying sometimes */
    union {_glapi_proc p; void *v;} p;
    p.p = __glapi_gentable_NoOp;

    for(i=0; i < entries; i++)
        if(dispatch[i] == NULL)
            dispatch[i] = p.v;
}

struct _glapi_table *
_glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {
    struct _glapi_table *disp = calloc(1, sizeof(struct _glapi_table));
    char symboln[512];

    if(!disp)
        return NULL;

    if(symbol_prefix == NULL)
        symbol_prefix = "";
"""

footer = """
    __glapi_gentable_set_remaining_noop(disp);

    return disp;
}
"""

body_template = """
    if(!disp->%(name)s) {
        void ** procp = (void **) &disp->%(name)s;
        snprintf(symboln, sizeof(symboln), "%%s%(entry_point)s", symbol_prefix);
        *procp = dlsym(handle, symboln);
    }
"""

class PrintCode(gl_XML.gl_print_base):

    def __init__(self):
        gl_XML.gl_print_base.__init__(self)

        self.name = "gl_gen_table.py (from Mesa)"
        self.license = license.bsd_license_template % ( \
"""Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
(C) Copyright IBM Corporation 2004, 2005
(C) Copyright Apple Inc 2011""", "BRIAN PAUL, IBM")

        return


    def get_stack_size(self, f):
        size = 0
        for p in f.parameterIterator():
            if p.is_padding:
                continue

            size += p.get_stack_size()

        return size


    def printRealHeader(self):
        print header
        return


    def printRealFooter(self):
        print footer
        return


    def printBody(self, api):
        for f in api.functionIterateByOffset():
            for entry_point in f.entry_points:
                vars = { 'entry_point' : entry_point,
                         'name' : f.name }

                print body_template % vars
        return

def show_usage():
    print "Usage: %s [-f input_file_name]" % sys.argv[0]
    sys.exit(1)

if __name__ == '__main__':
    file_name = "gl_API.xml"

    try:
        (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
    except Exception,e:
        show_usage()

    for (arg,val) in args:
        if arg == "-f":
            file_name = val

    printer = PrintCode()

    api = gl_XML.parse_GL_API(file_name, glX_XML.glx_item_factory())
    printer.Print(api)