projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 43866e37 | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| 1c79356b | 7 | * |
| 43866e37 A |
8 | * This file contains Original Code and/or Modifications of Original Code |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 1c79356b A |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 43866e37 A |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| 1c79356b A |
22 | * |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | #include <mach/ppc/asm.h> | |
| 26 | ||
| 27 | /* | |
| 28 | ** PE_get_timebase() | |
| 29 | ** | |
| 30 | ** Entry - R3 contains pointer to 64 bit structure. | |
| 31 | ** | |
| 32 | ** Exit - 64 bit structure filled in. | |
| 33 | ** | |
| 34 | */ | |
| 35 | ENTRY(PE_get_timebase, TAG_NO_FRAME_USED) | |
| 36 | loop: | |
| 37 | mftbu r4 | |
| 38 | mftb r5 | |
| 39 | mftbu r6 | |
| 40 | cmpw r6, r4 | |
| 41 | bne loop | |
| 42 | ||
| 43 | stw r4, 0(r3) | |
| 44 | stw r5, 4(r3) | |
| 45 | ||
| 46 | blr | |
| 47 | ||
| 48 | ||
| 49 |