| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * The contents of this file constitute Original Code as defined in and |
| | 7 | * are subject to the Apple Public Source License Version 1.1 (the |
| | 8 | * "License"). You may not use this file except in compliance with the |
| | 9 | * License. Please obtain a copy of the License at |
| | 10 | * http://www.apple.com/publicsource and read it before using this file. |
| | 11 | * |
| | 12 | * This Original Code and all software distributed under the License are |
| | 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| | 17 | * License for the specific language governing rights and limitations |
| | 18 | * under the License. |
| | 19 | * |
| | 20 | * @APPLE_LICENSE_HEADER_END@ |
| | 21 | */ |
| | 22 | #include <mach/ppc/asm.h> |
| | 23 | |
| | 24 | /* |
| | 25 | ** PE_get_timebase() |
| | 26 | ** |
| | 27 | ** Entry - R3 contains pointer to 64 bit structure. |
| | 28 | ** |
| | 29 | ** Exit - 64 bit structure filled in. |
| | 30 | ** |
| | 31 | */ |
| | 32 | ENTRY(PE_get_timebase, TAG_NO_FRAME_USED) |
| | 33 | loop: |
| | 34 | mftbu r4 |
| | 35 | mftb r5 |
| | 36 | mftbu r6 |
| | 37 | cmpw r6, r4 |
| | 38 | bne loop |
| | 39 | |
| | 40 | stw r4, 0(r3) |
| | 41 | stw r5, 4(r3) |
| | 42 | |
| | 43 | blr |
| | 44 | |
| | 45 | |
| | 46 | |
projects / apple / xnu.git / blame_incremental