projects / apple / xnu.git / blame
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|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 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. | |
| 1c79356b | 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 | |
| 1c79356b 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. | |
| 1c79356b A |
19 | * |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | /* | |
| 23 | * @OSF_COPYRIGHT@ | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _PPC_SETJMP_H_ | |
| 27 | #define _PPC_SETJMP_H_ | |
| 28 | ||
| 29 | /* | |
| 30 | * We save the following registers (marked as non-volatile in the ELF spec) | |
| 31 | * | |
| 32 | * r1 - stack pointer | |
| 33 | * r13 - small data area pointer | |
| 34 | * r14-r30 - local variables | |
| 35 | * r31 - local variable/environment pointer | |
| 36 | * | |
| 37 | * cr - condition register | |
| 38 | * lr - link register (to know where to jump back to) | |
| 39 | * xer - fixed point exception register | |
| 40 | * | |
| 41 | * fpscr - floating point status and control | |
| 42 | * f14-f31 - local variables | |
| 43 | * | |
| 44 | * which comes to 57 words. We round up to 64 for good measure. | |
| 45 | */ | |
| 46 | ||
| 47 | typedef struct jmp_buf { | |
| 48 | int jmp_buf[64]; | |
| 49 | } jmp_buf_t; | |
| 50 | ||
| 51 | #endif /* _PPC_SETJMP_H_ */ |