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9342d1be4e
not that readable anyway, so kill them and use standard definitions instead. Introduce EXPORT_SYMBOL for shared symbols. EXPORT_SYMBOL tells the compiler to use the standard calling conventions for a given symbol and not to optimize it away. Benefits: - We can later use gcc -combine -fwhole-program without problems. - It's a correctness fix for some optimizations. - We could check for duplicated exported functions at link time. - We could check whether exported functions are linked into initram or stage2 by accident. - We could generate usage statistics and possibly optimize away unused shared functions. - Through the above points, significant side reductions of 10-40% Build and boot tested on qemu. Build tested on all targets. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@780 f3766cd6-281f-0410-b1cd-43a5c92072e9
26 lines
967 B
C
26 lines
967 B
C
/*
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* This file is part of the coreboot project
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*
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* Copyright(C) 2008 Carl-Daniel Hailfinger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SHARED_H
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#define SHARED_H
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#define EXPORT_SYMBOL(sym) extern typeof(sym) sym __attribute__((externally_visible,used))
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#endif /* SHARED_H */
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