git.saurik.com Git - apple/xnu.git/blame_incremental

0 / 52 ( 0%)

Commit	Line	Data
	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28	#include <mach/ppc/asm.h>
	29
	30	/*
	31	** PE_get_timebase()
	32	**
	33	** Entry - R3 contains pointer to 64 bit structure.
	34	**
	35	** Exit - 64 bit structure filled in.
	36	**
	37	*/
	38	ENTRY(PE_get_timebase, TAG_NO_FRAME_USED)
	39	loop:
	40	mftbu r4
	41	mftb r5
	42	mftbu r6
	43	cmpw r6, r4
	44	bne loop
	45
	46	stw r4, 0(r3)
	47	stw r5, 4(r3)
	48
	49	blr
	50
	51
	52