2007-11-14 20:52:04 +05:30
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/*
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2007-04-13 19:48:38 +05:30
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* Copyright 2007 Gentoo Foundation
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2007-11-14 20:52:04 +05:30
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2007-04-13 19:48:38 +05:30
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*/
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#ifndef _HIDDEN_VISIBILITY_H_
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#define _HIDDEN_VISIBILITY_H_
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#if defined(__ELF__) && defined(__GNUC__)
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# define __hidden_asmname(name) __hidden_asmname1 (__USER_LABEL_PREFIX__, name)
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# define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name)
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# define __hidden_asmname2(prefix, name) #prefix name
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# define __hidden_proto(name, internal) \
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extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \
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__attribute__ ((visibility ("hidden")));
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# define __hidden_ver(local, internal, name) \
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extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \
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extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local))))
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# define hidden_proto(name) __hidden_proto(name, __RC_##name)
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# define hidden_def(name) __hidden_ver(__RC_##name, name, name);
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#else
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# define hidden_proto(name)
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# define hidden_def(name)
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#endif
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#endif
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