The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/thread.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 /*
   30  *      File:   machine/thread.h
   31  *
   32  *      This file contains the structure definitions for the thread
   33  *      state as applied to PPC processors.
   34  */
   35 
   36 #ifndef _PPC_THREAD_H_
   37 #define _PPC_THREAD_H_
   38 
   39 #include <mach/machine/vm_types.h>
   40 
   41 /*
   42  * Return address of the function that called current function, given
   43  *      address of the first parameter of current function. We can't
   44  *      do it this way, since parameter was copied from a register
   45  *      into a local variable. Call an assembly sub-function to 
   46  *      return this.
   47  */
   48 
   49 extern vm_offset_t getrpc(void);
   50 #define GET_RETURN_PC(addr)     getrpc()
   51 
   52 #define STACK_IKS(stack)                \
   53         ((vm_offset_t)(((vm_offset_t)stack)+KERNEL_STACK_SIZE)-FM_SIZE)
   54 
   55 #define syscall_emulation_sync(task) /* do nothing */
   56 
   57 /*
   58  * Defining this indicates that MD code will supply an exception()
   59  * routine, conformant with kern/exception.c (dependency alert!)
   60  * but which does wonderfully fast, machine-dependent magic.
   61  */
   62 
   63 #define MACHINE_FAST_EXCEPTION 1
   64 
   65 #endif  /* _PPC_THREAD_H_ */
   66 
   67 

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