23e866da20
When libpayload header files are included in the payload itself, it's possible that the payloads config settings will conflict with the ones in libpayload. It's also possible for the libpayload config settings to conflict with the payloads. To avoid that, the libpayload config settings have _LP_ (for libpayload) added to them. The symbols themselves as defined in the Config.in files are still the same, but the prefix added to them is now CONFIG_LP_ instead of just CONFIG_. BUG=chrome-os-partner:19420 TEST=Built and booted on pit. Built libpayload and depthcharge on all supported platforms. BRANCH=None Change-Id: Ib8a46d202e7880afdeac7924d69a949bfbcc5f97 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/65303 Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* Copyright (c) 2012 The Chromium OS Authors.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef _ENDIAN_H_
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#define _ENDIAN_H_
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#include <arch/types.h>
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#include <libpayload-config.h>
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static inline uint16_t swap_bytes16(uint16_t in)
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{
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return ((in & 0xFF) << 8) | ((in & 0xFF00) >> 8);
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}
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static inline uint32_t swap_bytes32(uint32_t in)
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{
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return ((in & 0xFF) << 24) | ((in & 0xFF00) << 8) |
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((in & 0xFF0000) >> 8) | ((in & 0xFF000000) >> 24);
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}
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static inline uint64_t swap_bytes64(uint64_t in)
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{
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return ((uint64_t)swap_bytes32((uint32_t)in) << 32) |
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((uint64_t)swap_bytes32((uint32_t)(in >> 32)));
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}
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/* Endian functions from glibc 2.9 / BSD "endian.h" */
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#if defined CONFIG_LP_BIG_ENDIAN
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#define htobe16(in) (in)
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#define htobe32(in) (in)
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#define htobe64(in) (in)
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#define htole16(in) swap_bytes16(in)
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#define htole32(in) swap_bytes32(in)
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#define htole64(in) swap_bytes64(in)
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#elif defined CONFIG_LP_LITTLE_ENDIAN
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#define htobe16(in) swap_bytes16(in)
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#define htobe32(in) swap_bytes32(in)
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#define htobe64(in) swap_bytes64(in)
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#define htole16(in) (in)
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#define htole32(in) (in)
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#define htole64(in) (in)
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#else
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#error Cant tell if the CPU is little or big endian.
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#endif
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#define be16toh(in) htobe16(in)
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#define be32toh(in) htobe32(in)
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#define be64toh(in) htobe64(in)
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#define le16toh(in) htole16(in)
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#define le32toh(in) htole32(in)
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#define le64toh(in) htole64(in)
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#define htonw(in) htobe16(in)
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#define htonl(in) htobe32(in)
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#define htonll(in) htobe64(in)
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#define ntohw(in) be16toh(in)
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#define ntohl(in) be32toh(in)
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#define ntohll(in) be64toh(in)
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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
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