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      1 /*
      2  * Mesa 3-D graphics library
      3  * Version:  7.1
      4  *
      5  * Copyright (C) 1999-2008  Brian Paul   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  * 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:
     13  *
     14  * The above copyright notice and this permission notice shall be included
     15  * in all copies or substantial portions of the Software.
     16  *
     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.
     23  */
     24 
     25 
     26 #ifndef _GLAPI_PRIV_H
     27 #define _GLAPI_PRIV_H
     28 
     29 #include <stdlib.h>
     30 #include <string.h>
     31 #include <stdio.h>
     32 
     33 #ifdef HAVE_DIX_CONFIG_H
     34 #include <dix-config.h>
     35 #include "glapi/mesa.h"
     36 #else /* HAVE_DIX_CONFIG_H */
     37 #define GL_GLEXT_PROTOTYPES
     38 #include "GL/gl.h"
     39 #include "GL/glext.h"
     40 
     41 #ifndef GL_OES_fixed_point
     42 typedef int GLfixed;
     43 typedef int GLclampx;
     44 #endif
     45 
     46 #ifndef GL_OES_EGL_image
     47 typedef void *GLeglImageOES;
     48 #endif
     49 
     50 #endif /* HAVE_DIX_CONFIG_H */
     51 
     52 #include "glapi/glapi.h"
     53 
     54 
     55 /* getproc */
     56 
     57 extern void
     58 _glapi_check_table_not_null(const struct _glapi_table *table);
     59 
     60 
     61 extern void
     62 _glapi_check_table(const struct _glapi_table *table);
     63 
     64 
     65 /* entrypoint */
     66 
     67 extern void
     68 init_glapi_relocs_once(void);
     69 
     70 
     71 extern _glapi_proc
     72 generate_entrypoint(unsigned int functionOffset);
     73 
     74 
     75 extern void
     76 fill_in_entrypoint_offset(_glapi_proc entrypoint, unsigned int offset);
     77 
     78 
     79 extern _glapi_proc
     80 get_entrypoint_address(unsigned int functionOffset);
     81 
     82 
     83 /**
     84  * Size (in bytes) of dispatch function (entrypoint).
     85  */
     86 #if defined(USE_X86_ASM)
     87 # if defined(GLX_USE_TLS)
     88 #  define DISPATCH_FUNCTION_SIZE  16
     89 # elif defined(THREADS)
     90 #  define DISPATCH_FUNCTION_SIZE  32
     91 # else
     92 #  define DISPATCH_FUNCTION_SIZE  16
     93 # endif
     94 #endif
     95 
     96 #if defined(USE_X64_64_ASM)
     97 # if defined(GLX_USE_TLS)
     98 #  define DISPATCH_FUNCTION_SIZE  16
     99 # endif
    100 #endif
    101 
    102 
    103 /**
    104  * Number of extension functions which we can dynamically add at runtime.
    105  *
    106  * Number of extension functions is also subject to the size of backing exec
    107  * mem we allocate. For the common case of dispatch stubs with size 16 bytes,
    108  * the two limits will be hit simultaneously. For larger dispatch function
    109  * sizes, MAX_EXTENSION_FUNCS is effectively reduced.
    110  */
    111 #define MAX_EXTENSION_FUNCS 256
    112 
    113 
    114 #endif
    115