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Diffstat (limited to 'src/gallium/auxiliary/util/u_init.h')
-rw-r--r-- | src/gallium/auxiliary/util/u_init.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_init.h b/src/gallium/auxiliary/util/u_init.h new file mode 100644 index 0000000000..40dafadf97 --- /dev/null +++ b/src/gallium/auxiliary/util/u_init.h @@ -0,0 +1,52 @@ +/* + * Copyright 2010 Luca Barbieri + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef U_INIT_H +#define U_INIT_H + +/* Use UTIL_INIT(f) to have f called at program initialization. + Note that it is only guaranteed to be called if any symbol in the + .c file it is in sis referenced by the program. + + UTIL_INIT functions are called in arbitrary order. +*/ + +#ifdef __cplusplus +/* use a C++ global constructor */ +#define UTIL_INIT(f) struct f##__gctor_t {f##__gctor_t() {x();}} f##__gctor; +#elif defined(_MSC_VER) +/* add a pointer to the section where MSVC stores global constructor pointers */ +/* see http://blogs.msdn.com/vcblog/archive/2006/10/20/crt-initialization.aspx and + http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc */ +#pragma data_seg(".CRT$XCU") +#define UTIL_INIT(f) static void __cdecl f##__init(void) {f();}; __declspec(allocate(".CRT$XCU")) void (__cdecl* f##__xcu)(void) = f##__init; +#elif defined(__GNUC__) +#define UTIL_INIT(f) static void f##__init(void) __attribute__((constructor)); static void f##__init(void) {f();} +#else +#error Unsupported compiler: please find out how to implement global initializers in C on it +#endif + +#endif + |