glibc/sysdeps/alpha/htonl.S

/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <sysdep.h>

ENTRY(htonl)
#ifdef PROF
	ldgp	gp, 0(pv)
	.set noat
	lda	AT, _mcount
	jsr	AT, (AT), _mcount
	.set at
	.prologue 1
#else
	.prologue 0
#endif

	extlh	a0, 5, t1	# t1 = dd000000
	zap	a0, 0xfd, t2	# t2 = 0000cc00
	sll	t2, 5, t2	# t2 = 00198000
	s8addl	t2, t1, t1	# t1 = ddcc0000
	zap	a0, 0xfb, t2	# t2 = 00bb0000
	srl	t2, 8, t2	# t2 = 0000bb00
	extbl	a0, 3, v0	# v0 = 000000aa
	or	t1, v0, v0	# v0 = ddcc00aa
	or	t2, v0, v0	# v0 = ddccbbaa
	ret

	END(__htonl)

weak_alias(htonl, ntohl)