setjmp.h

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    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 /*
   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_ */

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FreeBSD/Linux Kernel Cross Reference sys/osfmk/ppc/setjmp.h

FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/setjmp.h