projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 43866e37 A |
1 | /* |
| 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| e5568f75 A |
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. | |
| 43866e37 | 11 | * |
| e5568f75 A |
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 | |
| 43866e37 A |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| e5568f75 A |
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. | |
| 43866e37 A |
19 | * |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _PPC_COMMPAGE_H | |
| 24 | #define _PPC_COMMPAGE_H | |
| 25 | ||
| 26 | #ifndef __ASSEMBLER__ | |
| 27 | #include <stdint.h> | |
| 28 | #endif /* __ASSEMBLER__ */ | |
| 29 | ||
| 30 | ||
| 31 | /* Special check bits for the compage_descriptor "special" field. */ | |
| 32 | ||
| 33 | #define kCommPageDCBA 0x0001 // this routine uses DCBA, map to NOP if not appropriate | |
| 34 | #define kCommPageSYNC 0x0002 // this routine uses SYNC, map to NOP if UP | |
| 35 | #define kCommPageMTCRF 0x0004 // set bit 11 in MTCRF if only 1 cr specified | |
| 36 | ||
| 37 | ||
| 38 | #ifdef __ASSEMBLER__ | |
| 39 | ||
| 40 | #define COMMPAGE_DESCRIPTOR(label,address,must,cant,special) \ | |
| 41 | LEXT(label) @\ | |
| 42 | .short label-. @\ | |
| 43 | .short .-label-2 @\ | |
| 44 | .short address @\ | |
| 45 | .short special @\ | |
| 46 | .long must @\ | |
| 47 | .long cant | |
| 48 | ||
| 49 | ||
| 50 | #else /* __ASSEMBLER__ */ | |
| 51 | ||
| 52 | /* Each potential commpage routine is described by one of these. | |
| 53 | * Note that the COMMPAGE_DESCRIPTOR macro (above), used in | |
| 54 | * assembly language, must agree with this. | |
| 55 | */ | |
| 56 | ||
| 57 | typedef struct commpage_descriptor { | |
| 58 | short code_offset; // offset to code from this descriptor | |
| 59 | short code_length; // length in bytes | |
| 60 | short commpage_address; // put at this address (_COMM_PAGE_BCOPY etc) | |
| 61 | short special; // special handling bits for DCBA and SYNC etc | |
| 62 | long musthave; // _cpu_capability bits we must have | |
| 63 | long canthave; // _cpu_capability bits we can't have | |
| 64 | } commpage_descriptor; | |
| 65 | ||
| 66 | ||
| 67 | extern char *commPagePtr; // virt address of commpage in kernel map | |
| 68 | ||
| 69 | ||
| 70 | extern void commpage_set_timestamp(uint64_t tbr,uint32_t secs,uint32_t usecs,uint32_t ticks_per_sec); | |
| 71 | extern int commpage_time_dcba( void ); | |
| 72 | ||
| 73 | #endif /* __ASSEMBLER__ */ | |
| 74 | ||
| 75 | #endif /* _PPC_COMMPAGE_H */ |