osfmk/ppc/trap.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * Mach Operating System
  28  * Copyright (c) 1991,1990 Carnegie Mellon University
  29  * All Rights Reserved.
  30  *
  31  * Permission to use, copy, modify and distribute this software and its
  32  * documentation is hereby granted, provided that both the copyright
  33  * notice and this permission notice appear in all copies of the
  34  * software, derivative works or modified versions, and any portions
  35  * thereof, and that both notices appear in supporting documentation.
  36  *
  37  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  38  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  39  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  40  *
  41  * Carnegie Mellon requests users of this software to return to
  42  *
  43  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  44  *  School of Computer Science
  45  *  Carnegie Mellon University
  46  *  Pittsburgh PA 15213-3890
  47  *
  48  * any improvements or extensions that they make and grant Carnegie Mellon
  49  * the rights to redistribute these changes.
  50  */
  51
  52 #ifndef _PPC_TRAP_H_
  53 #define _PPC_TRAP_H_
  54
  55 /* maximum number of arguments to a syscall trap */
  56 #define NARGS   12
  57 /* Size to reserve in frame for arguments - first 8 are in registers */
  58 #define ARG_SIZE FM_ALIGN((NARGS-8)*4)
  59 #define MUNGE_ARGS_SIZE FM_ALIGN(8*8)
  60
  61 /*
  62  * Hardware exception vectors for powerpc are in exception.h
  63  */
  64
  65 #ifndef ASSEMBLER
  66
  67 #include <mach/thread_status.h>
  68 #include <mach/boolean.h>
  69 #include <mach/kern_return.h>
  70 #include <ppc/thread.h>
  71
  72 extern void                     doexception(int exc, int code, int sub);
  73
  74 extern struct savearea* trap(int trapno,
  75                                      struct savearea *ss,
  76                                      unsigned int dsisr,
  77                                      addr64_t dar);
  78
  79 typedef kern_return_t (*perfCallback)(int trapno, struct savearea *ss,
  80         unsigned int dsisr, addr64_t dar);
  81
  82 extern perfCallback perfTrapHook;
  83 extern perfCallback perfASTHook;
  84 extern perfCallback perfIntHook;
  85
  86 extern struct savearea* interrupt(int intno,
  87                                          struct savearea *ss,
  88                                          unsigned int dsisr,
  89                                          unsigned int dar);
  90
  91 extern int                      syscall_error(int exception,
  92                                               int code,
  93                                               int subcode,
  94                                               struct savearea *ss);
  95
  96
  97 #endif  /* ASSEMBLER */
  98
  99 #endif  /* _PPC_TRAP_H_ */