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113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* Wrapper functions for dlopen(), dlsym(), dlclose().
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* Note that the #ifdef tests for various environments should be expanded.
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*/
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#include <precomp.h>
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#include "dlopen.h"
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#if defined(_GNU_SOURCE) && !defined(__MINGW32__) && !defined(__blrts)
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#include <dlfcn.h>
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#endif
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#if defined(_WIN32)
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//#include <windows.h>
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#include <windef.h>
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#include <winbase.h>
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#endif
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/**
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* Wrapper for dlopen().
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* Note that 'flags' isn't used at this time.
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*/
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void *
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_mesa_dlopen(const char *libname, int flags)
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{
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#if defined(__blrts)
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return NULL;
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#elif defined(_GNU_SOURCE)
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flags = RTLD_LAZY | RTLD_GLOBAL; /* Overriding flags at this time */
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return dlopen(libname, flags);
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#elif defined(__MINGW32__)
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return LoadLibraryA(libname);
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#else
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return NULL;
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#endif
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}
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/**
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* Wrapper for dlsym() that does a cast to a generic function type,
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* rather than a void *. This reduces the number of warnings that are
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* generated.
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*/
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GenericFunc
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_mesa_dlsym(void *handle, const char *fname)
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{
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union {
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void *v;
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GenericFunc f;
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} u;
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#if defined(__blrts)
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u.v = NULL;
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#elif defined(__DJGPP__)
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/* need '_' prefix on symbol names */
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char fname2[1000];
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fname2[0] = '_';
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strncpy(fname2 + 1, fname, 998);
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fname2[999] = 0;
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u.v = dlsym(handle, fname2);
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#elif defined(_GNU_SOURCE)
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u.v = dlsym(handle, fname);
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#elif defined(__MINGW32__)
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u.v = (void *) GetProcAddress(handle, fname);
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#else
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u.v = NULL;
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#endif
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return u.f;
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}
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/**
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* Wrapper for dlclose().
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*/
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void
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_mesa_dlclose(void *handle)
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{
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#if defined(__blrts)
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(void) handle;
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#elif defined(_GNU_SOURCE)
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dlclose(handle);
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#elif defined(__MINGW32__)
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FreeLibrary(handle);
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#else
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(void) handle;
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#endif
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}
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