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| Rev | Author | Line No. | Line |
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| 1901 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * |
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| 4 | * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the "Software"), |
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| 8 | * to deal in the Software without restriction, including without limitation |
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| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 11 | * Software is furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included |
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| 14 | * in all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 20 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 22 | */ |
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| 23 | |||
| 24 | |||
| 25 | /** |
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| 26 | * Wrapper functions for dlopen(), dlsym(), dlclose(). |
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| 27 | * Note that the #ifdef tests for various environments should be expanded. |
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| 28 | */ |
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| 29 | |||
| 30 | |||
| 31 | #include "compiler.h" |
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| 32 | #include "dlopen.h" |
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| 33 | |||
| 34 | #if defined(_GNU_SOURCE) && !defined(__MINGW32__) && !defined(__blrts) |
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| 35 | #include |
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| 36 | #endif |
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| 37 | #if defined(_WIN32) |
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| 38 | #include |
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| 39 | #endif |
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| 40 | |||
| 41 | |||
| 42 | /** |
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| 43 | * Wrapper for dlopen(). |
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| 44 | * Note that 'flags' isn't used at this time. |
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| 45 | */ |
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| 46 | void * |
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| 47 | _mesa_dlopen(const char *libname, int flags) |
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| 48 | { |
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| 49 | #if defined(__blrts) |
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| 50 | return NULL; |
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| 51 | #elif defined(_GNU_SOURCE) |
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| 52 | flags = RTLD_LAZY | RTLD_GLOBAL; /* Overriding flags at this time */ |
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| 53 | return dlopen(libname, flags); |
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| 54 | #elif defined(__MINGW32__) |
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| 55 | return LoadLibraryA(libname); |
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| 56 | #else |
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| 57 | return NULL; |
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| 58 | #endif |
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| 59 | } |
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| 60 | |||
| 61 | |||
| 62 | /** |
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| 63 | * Wrapper for dlsym() that does a cast to a generic function type, |
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| 64 | * rather than a void *. This reduces the number of warnings that are |
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| 65 | * generated. |
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| 66 | */ |
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| 67 | GenericFunc |
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| 68 | _mesa_dlsym(void *handle, const char *fname) |
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| 69 | { |
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| 70 | union { |
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| 71 | void *v; |
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| 72 | GenericFunc f; |
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| 73 | } u; |
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| 74 | #if defined(__blrts) |
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| 75 | u.v = NULL; |
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| 76 | #elif defined(__DJGPP__) |
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| 77 | /* need '_' prefix on symbol names */ |
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| 78 | char fname2[1000]; |
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| 79 | fname2[0] = '_'; |
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| 80 | strncpy(fname2 + 1, fname, 998); |
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| 81 | fname2[999] = 0; |
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| 82 | u.v = dlsym(handle, fname2); |
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| 83 | #elif defined(_GNU_SOURCE) |
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| 84 | u.v = dlsym(handle, fname); |
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| 85 | #elif defined(__MINGW32__) |
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| 86 | u.v = (void *) GetProcAddress(handle, fname); |
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| 87 | #else |
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| 88 | u.v = NULL; |
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| 89 | #endif |
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| 90 | return u.f; |
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| 91 | } |
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| 92 | |||
| 93 | |||
| 94 | /** |
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| 95 | * Wrapper for dlclose(). |
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| 96 | */ |
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| 97 | void |
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| 98 | _mesa_dlclose(void *handle) |
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| 99 | { |
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| 100 | #if defined(__blrts) |
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| 101 | (void) handle; |
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| 102 | #elif defined(_GNU_SOURCE) |
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| 103 | dlclose(handle); |
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| 104 | #elif defined(__MINGW32__) |
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| 105 | FreeLibrary(handle); |
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| 106 | #else |
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| 107 | (void) handle; |
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| 108 | #endif |
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| 109 | } |
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| 110 |