osfmk/ppc/trap.h

   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  * Mach Operating System
  27  * Copyright (c) 1991,1990 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50
  51 #ifndef _PPC_TRAP_H_
  52 #define _PPC_TRAP_H_
  53
  54 /* maximum number of arguments to a syscall trap */
  55 #define NARGS   12
  56 /* Size to reserve in frame for arguments - first 8 are in registers */
  57 #define ARG_SIZE FM_ALIGN((NARGS-8)*4)
  58
  59
  60 /*
  61  * Hardware exception vectors for powerpc are in exception.h
  62  */
  63
  64 #ifndef ASSEMBLER
  65
  66 #include <mach/thread_status.h>
  67 #include <mach/boolean.h>
  68 #include <mach/kern_return.h>
  69 #include <ppc/thread.h>
  70
  71 extern void                     doexception(int exc, int code, int sub);
  72
  73 extern void                     thread_exception_return(void);
  74
  75 extern struct savearea* trap(int trapno,
  76                                      struct savearea *ss,
  77                                      unsigned int dsisr,
  78                                      unsigned int dar);
  79
  80 typedef kern_return_t (*perfTrap)(int trapno, struct savearea *ss,
  81         unsigned int dsisr, unsigned int dar);
  82
  83 extern perfTrap perfTrapHook;
  84
  85 extern struct savearea* interrupt(int intno,
  86                                          struct savearea *ss,
  87                                          unsigned int dsisr,
  88                                          unsigned int dar);
  89
  90 extern int                      syscall_error(int exception,
  91                                               int code,
  92                                               int subcode,
  93                                               struct savearea *ss);
  94
  95
  96 #endif  /* ASSEMBLER */
  97
  98 #endif  /* _PPC_TRAP_H_ */