forked from KolibriOS/kolibrios
53 lines
2.3 KiB
C
53 lines
2.3 KiB
C
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/*
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* Copyright 2010 Luca Barbieri
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef U_INIT_H
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#define U_INIT_H
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/* Use UTIL_INIT(f) to have f called at program initialization.
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Note that it is only guaranteed to be called if any symbol in the
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.c file it is in sis referenced by the program.
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UTIL_INIT functions are called in arbitrary order.
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*/
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#ifdef __cplusplus
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/* use a C++ global constructor */
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#define UTIL_INIT(f) struct f##__gctor_t {f##__gctor_t() {x();}} f##__gctor;
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#elif defined(_MSC_VER)
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/* add a pointer to the section where MSVC stores global constructor pointers */
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/* see http://blogs.msdn.com/vcblog/archive/2006/10/20/crt-initialization.aspx and
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http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc */
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#pragma section(".CRT$XCU",read)
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#define UTIL_INIT(f) static void __cdecl f##__init(void) {f();}; __declspec(allocate(".CRT$XCU")) void (__cdecl* f##__xcu)(void) = f##__init;
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#elif defined(__GNUC__)
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#define UTIL_INIT(f) static void f##__init(void) __attribute__((constructor)); static void f##__init(void) {f();}
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#else
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#error Unsupported compiler: please find out how to implement global initializers in C on it
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#endif
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#endif
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