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Annotation of XNU/osfmk/ppc/thread.h, revision 1.1

1.1     ! root        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: /*
        !            27:  *     File:   machine/thread.h
        !            28:  *
        !            29:  *     This file contains the structure definitions for the thread
        !            30:  *     state as applied to PPC processors.
        !            31:  */
        !            32: 
        !            33: #ifndef        _PPC_THREAD_H_
        !            34: #define _PPC_THREAD_H_
        !            35: 
        !            36: #include <mach/machine/vm_types.h>
        !            37: 
        !            38: /*
        !            39:  * Return address of the function that called current function, given
        !            40:  *     address of the first parameter of current function. We can't
        !            41:  *      do it this way, since parameter was copied from a register
        !            42:  *      into a local variable. Call an assembly sub-function to 
        !            43:  *      return this.
        !            44:  */
        !            45: 
        !            46: extern vm_offset_t getrpc(void);
        !            47: #define        GET_RETURN_PC(addr)     getrpc()
        !            48: 
        !            49: #define STACK_IKS(stack)               \
        !            50:        ((vm_offset_t)(((vm_offset_t)stack)+KERNEL_STACK_SIZE)-FM_SIZE)
        !            51: 
        !            52: #define syscall_emulation_sync(task) /* do nothing */
        !            53: 
        !            54: /*
        !            55:  * Defining this indicates that MD code will supply an exception()
        !            56:  * routine, conformant with kern/exception.c (dependency alert!)
        !            57:  * but which does wonderfully fast, machine-dependent magic.
        !            58:  */
        !            59: 
        !            60: #define MACHINE_FAST_EXCEPTION 1
        !            61: 
        !            62: #endif /* _PPC_THREAD_H_ */
        !            63: 
        !            64: 

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