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70 lines
2.4 KiB
ArmAsm
70 lines
2.4 KiB
ArmAsm
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include <machine/asm.h>
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#if defined(LIBC_SCCS)
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.text
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.asciz "$OpenBSD$"
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#endif /* LIBC_SCCS */
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/*
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* netorder = htonl(hostorder)
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* hostorder = ntohl(netorder)
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*/
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ALEAF(ntohl)
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NLEAF(htonl) # a0 = 0x11223344, return 0x44332211
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.set reorder
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#ifdef MIPSEL
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srl v1, a0, 24 # v1 = 0x00000011
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sll v0, a0, 24 # v0 = 0x44000000
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or v0, v0, v1
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and v1, a0, 0xff00
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sll v1, v1, 8 # v1 = 0x00330000
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or v0, v0, v1
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srl v1, a0, 8
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and v1, v1, 0xff00 # v1 = 0x00002200
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or v0, v0, v1
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#else
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#ifdef MIPSEB
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move v0, a0
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#else
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ERROR
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#endif
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#endif
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j ra
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END(htonl)
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