29 lines
1.0 KiB
C
29 lines
1.0 KiB
C
/*
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* hidden-visibility.h
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* Create hidden internal aliases so we dont have wasteful relocs.
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* Copyright 2007 Gentoo Foundation
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* Released under the GPLv2
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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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