[unix-history] / usr / src / lib / libc / mips / net / htonl.s

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
	ASMSTR("@(#)htonl.s	5.1 (Berkeley) %G%")
#endif /* LIBC_SCCS and not lint */

#include "DEFS.h"

/*
 * netorder = htonl(hostorder)
 * hostorder = ntohl(netorder)
 */
LEAF(htonl)				# a0 = 0x11223344, return 0x44332211
ALEAF(ntohl)
	srl	v1, a0, 24		# v1 = 0x00000011
	sll	v0, a0, 24		# v0 = 0x44000000
	or	v0, v0, v1
	and	v1, a0, 0xff00
	sll	v1, v1, 8		# v1 = 0x00330000
	or	v0, v0, v1
	srl	v1, a0, 8
	and	v1, v1, 0xff00		# v1 = 0x00002200
	or	v0, v0, v1
	j	ra
END(htonl)
Commit	Line	Data
808d2265 KB	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Ralph Campbell.
	7	*
	8	* %sccs.include.redist.c%
	9	*/
	10
	11	#if defined(LIBC_SCCS) && !defined(lint)
	12	ASMSTR("@(#)htonl.s 5.1 (Berkeley) %G%")
	13	#endif /* LIBC_SCCS and not lint */
	14
	15	#include "DEFS.h"
	16
	17	/*
	18	* netorder = htonl(hostorder)
	19	* hostorder = ntohl(netorder)
	20	*/
	21	LEAF(htonl) # a0 = 0x11223344, return 0x44332211
	22	ALEAF(ntohl)
	23	srl v1, a0, 24 # v1 = 0x00000011
	24	sll v0, a0, 24 # v0 = 0x44000000
	25	or v0, v0, v1
	26	and v1, a0, 0xff00
	27	sll v1, v1, 8 # v1 = 0x00330000
	28	or v0, v0, v1
	29	srl v1, a0, 8
	30	and v1, v1, 0xff00 # v1 = 0x00002200
	31	or v0, v0, v1
	32	j ra
	33	END(htonl)