/*
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* Copyright (C) 2011 Philippe Gerum <rpm@xenomai.org>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#ifndef _COBALT_WRAPPERS_H
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#define _COBALT_WRAPPERS_H
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#include <boilerplate/compiler.h>
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#define __stringify_1(x...) #x
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#define __stringify(x...) __stringify_1(x)
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#define __WRAP(call) __wrap_ ## call
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#define __STD(call) __real_ ## call
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#define __COBALT(call) __cobalt_ ## call
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#define __RT(call) __COBALT(call)
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#define COBALT_DECL(T, P) \
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__typeof__(T) __RT(P); \
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__typeof__(T) __STD(P); \
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__typeof__(T) __WRAP(P)
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/*
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*
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* Each "foo" Cobalt routine shadowing a POSIX service may be
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* overriden by an external library (see --with-cobalt-override
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* option), in which case we generate the following symbols:
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*
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* __real_foo() => Original POSIX implementation.
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* __cobalt_foo() => Cobalt implementation.
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* __wrap_foo() => Weak alias to __cobalt_foo(), may be
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* overriden.
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*
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* In the latter case, the external library shall provide its own
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* implementation of __wrap_foo(), overriding Cobalt's foo()
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* version. The original Cobalt implementation can still be
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* referenced as __COBALT(foo).
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*/
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#define COBALT_IMPL(T, I, A) \
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__typeof__(T) __wrap_ ## I A __attribute__((alias("__cobalt_" __stringify(I)), weak)); \
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__typeof__(T) __cobalt_ ## I A
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#endif /* !_COBALT_WRAPPERS_H */
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