02a2fe7907
We've accumulated a number of endianness-handling and related macros
that are duplicated between coreboot and libpayload. This patch reduces
duplication by merging them into a commonlib header. This has the added
side-benefit of bringing the coreboot implementation of beXXenc/dec()
functions to libpayload, which lead to better code generation by
avoiding https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92716.
Keep the htobell()-style functions in libpayload only since they're not
needed in coreboot and not preferred. Keep the cpu_to_beXX()-style
functions in coreboot only -- maybe we should deprecate those
eventually.
This patch is explicitly copying and relicensing some of the code I
originally added as GPLv2 in commit e8e92d60c4 ("endian.h: Add
be32dec/be32enc family of functions") to BSD-3.
Change-Id: I5eb83d44a98b3aa59bba65b8e22df668874d2668
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90308
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
/*
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*
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* Copyright (c) 2012 The ChromiumOS Authors.
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*
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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*/
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#ifndef _ENDIAN_H_
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#define _ENDIAN_H_
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#include <arch/io.h>
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#include <arch/types.h>
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#include <libpayload-config.h>
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#include <string.h>
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#define swab16(x) __builtin_bswap16(x)
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#define swab32(x) __builtin_bswap32(x)
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#define swab64(x) __builtin_bswap64(x)
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#if CONFIG(LP_BIG_ENDIAN)
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#define __BIG_ENDIAN
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#elif CONFIG(LP_LITTLE_ENDIAN)
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#define __LITTLE_ENDIAN
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#endif /* CONFIG_*_ENDIAN */
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/* This include depends on previous definitions, do not move to the top. */
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#include <commonlib/bsd/_endian.h>
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/* Deprecated names (not in glibc / BSD) */
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#define htobew(in) htobe16(in)
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#define htobel(in) htobe32(in)
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#define htobell(in) htobe64(in)
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#define htolew(in) htole16(in)
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#define htolel(in) htole32(in)
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#define htolell(in) htole64(in)
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#define betohw(in) be16toh(in)
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#define betohl(in) be32toh(in)
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#define betohll(in) be64toh(in)
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#define letohw(in) le16toh(in)
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#define letohl(in) le32toh(in)
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#define letohll(in) le64toh(in)
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#endif /* _ENDIAN_H_ */
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