2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
37 _glapi_check_table_not_null(const struct _glapi_table
*table
);
41 _glapi_check_table(const struct _glapi_table
*table
);
47 _glapi_exec_malloc(unsigned int size
);
53 init_glapi_relocs_once(void);
57 generate_entrypoint(unsigned int functionOffset
);
61 fill_in_entrypoint_offset(_glapi_proc entrypoint
, unsigned int offset
);
65 get_entrypoint_address(unsigned int functionOffset
);
69 * Size (in bytes) of dispatch function (entrypoint).
71 #if defined(USE_X86_ASM)
72 # if defined(GLX_USE_TLS)
73 # define DISPATCH_FUNCTION_SIZE 16
74 # elif defined(THREADS)
75 # define DISPATCH_FUNCTION_SIZE 32
77 # define DISPATCH_FUNCTION_SIZE 16
81 #if defined(USE_X64_64_ASM)
82 # if defined(GLX_USE_TLS)
83 # define DISPATCH_FUNCTION_SIZE 16
89 * Number of extension functions which we can dynamically add at runtime.
91 * Number of extension functions is also subject to the size of backing exec
92 * mem we allocate. For the common case of dispatch stubs with size 16 bytes,
93 * the two limits will be hit simultaneously. For larger dispatch function
94 * sizes, MAX_EXTENSION_FUNCS is effectively reduced.
96 #define MAX_EXTENSION_FUNCS 256