byteswap.h

////////////////////////////////////////////////////////////////////////////////
//
// Filename: 	byteswap.h
// {{{
// Project:	A Set of Wishbone Controlled SPI Flash Controllers
//
// Purpose:	
//
// Creator:	Dan Gisselquist, Ph.D.
//		Gisselquist Technology, LLC
//
////////////////////////////////////////////////////////////////////////////////
// }}}
// Copyright (C) 2015-2021, Gisselquist Technology, LLC
// {{{
// This file is part of the set of Wishbone controlled SPI flash controllers
// project
//
// The Wishbone SPI flash controller project is free software (firmware):
// you can redistribute it and/or modify it under the terms of the GNU Lesser
// General Public License as published by the Free Software Foundation, either
// version 3 of the License, or (at your option) any later version.
//
// The Wishbone SPI flash controller project is distributed in the hope
// that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTIBILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  (It's in the $(ROOT)/doc directory.  Run make
// with no target there if the PDF file isn't present.)  If not, see
// <http://www.gnu.org/licenses/> for a copy.
// }}}
// License:	LGPL, v3, as defined and found on www.gnu.org,
// {{{
//		http://www.gnu.org/licenses/lgpl.html
//
//
////////////////////////////////////////////////////////////////////////////////
//
// }}}
#ifndef	BYTESWAP_H
#define	BYTESWAP_H

#include <stdint.h>

#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
extern	uint32_t byteswap(uint32_t v);
extern	void	byteswapbuf(int ln, uint32_t *buf);
#else
#define	byteswap(A)		 (A)
#define	byteswapbuf(A, B)
#endif

extern	uint32_t buildword(const unsigned char *p);
extern	uint32_t buildswap(const unsigned char *p);

#endif