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Annotation of XNU/osfmk/ppc/thread.h, revision 1.1.1.1

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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