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  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
    7  * 
    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
   17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   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.
   22  * 
   23  * @APPLE_LICENSE_HEADER_END@
   24  */
   25 /*
   26  * @OSF_COPYRIGHT@
   27  */
   28 
   29 #ifndef _PPC_SETJMP_H_
   30 #define _PPC_SETJMP_H_
   31 
   32 /*
   33  * We save the following registers (marked as non-volatile in the ELF spec)
   34  *
   35  * r1      - stack pointer
   36  * r13     - small data area pointer
   37  * r14-r30 - local variables
   38  * r31     - local variable/environment pointer
   39  * 
   40  * cr      - condition register
   41  * lr      - link register (to know where to jump back to)
   42  * xer     - fixed point exception register
   43  *
   44  * fpscr   - floating point status and control
   45  * f14-f31 - local variables
   46  *
   47  * which comes to 57 words. We round up to 64 for good measure.
   48  */
   49 
   50 typedef struct jmp_buf {
   51         int     jmp_buf[64];
   52 } jmp_buf_t;
   53 
   54 #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