a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
44 lines
2 KiB
C
44 lines
2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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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; version 2 of the License.
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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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#ifndef __SRC_INCLUDE_BASE3_H__
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#define __SRC_INCLUDE_BASE3_H__
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/* We translate a floating pin (Z) as the ternary digit 2. */
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#define Z 2
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/*
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* This provides a variadic macro BASE3() that can be used to translate a set of
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* pin states into its base-3 integer representation, even in the context of a
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* static initializer. You can call it with any number of up to 6 arguments,
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* e.g. BASE3(1, Z) -> 5 or BASE3(0, Z, 1, 0) -> 21. Just don't look too closely
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* at how the sausage is made. (Pay extra attention to typos when expanding it!)
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*/
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#define _BASE3_IMPL_1(arg0, arg1, arg2, arg3, arg4, arg5) arg0
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#define _BASE3_IMPL_2(arg0, arg1, arg2, arg3, arg4, arg5) \
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(arg1 + (3 * _BASE3_IMPL_1(arg0, arg1, arg2, arg3, arg4, arg5)))
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#define _BASE3_IMPL_3(arg0, arg1, arg2, arg3, arg4, arg5) \
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(arg2 + (3 * _BASE3_IMPL_2(arg0, arg1, arg2, arg3, arg4, arg5)))
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#define _BASE3_IMPL_4(arg0, arg1, arg2, arg3, arg4, arg5) \
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(arg3 + (3 * _BASE3_IMPL_3(arg0, arg1, arg2, arg3, arg4, arg5)))
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#define _BASE3_IMPL_5(arg0, arg1, arg2, arg3, arg4, arg5) \
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(arg4 + (3 * _BASE3_IMPL_4(arg0, arg1, arg2, arg3, arg4, arg5)))
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#define _BASE3_IMPL_6(arg0, arg1, arg2, arg3, arg4, arg5) \
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(arg5 + (3 * _BASE3_IMPL_5(arg0, arg1, arg2, arg3, arg4, arg5)))
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#define _BASE3_IMPL(arg0, arg1, arg2, arg3, arg4, arg5, NARGS, ...) \
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_BASE3_IMPL##NARGS(arg0, arg1, arg2, arg3, arg4, arg5)
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#define BASE3(...) _BASE3_IMPL(__VA_ARGS__, _6, _5, _4, _3, _2, _1)
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#endif /* __SRC_INCLUDE_BASE3_H__ */
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