bsd/dev/ppc/chud/chud_bsd_callback.c

   1 /*
   2  * Copyright (c) 2003 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 #include <stdint.h>
  25 #include <mach/boolean.h>
  26 #include <mach/mach_types.h>
  27
  28 #include <sys/syscall.h>
  29 #include <sys/types.h> /* u_int */
  30 #include <sys/proc.h> /* struct proc */
  31 #include <sys/systm.h> /* struct sysent */
  32 #include <sys/sysproto.h>
  33
  34 #pragma mark **** kern debug ****
  35 typedef void (*chudxnu_kdebug_callback_func_t)(uint32_t debugid, uint32_t arg0, uint32_t arg1, uint32_t arg2, uint32_t arg3, uint32_t arg4);
  36 static chudxnu_kdebug_callback_func_t kdebug_callback_fn = NULL;
  37
  38 extern void kdbg_control_chudxnu(int val, void *fn);
  39 extern unsigned int kdebug_enable;
  40
  41 static void chudxnu_private_kdebug_callback(unsigned int debugid, unsigned int arg0, unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
  42 {
  43     if(kdebug_callback_fn) {
  44         (kdebug_callback_fn)(debugid, arg0, arg1, arg2, arg3, arg4);
  45     }
  46 }
  47
  48 __private_extern__
  49 kern_return_t chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t func)
  50 {
  51     kdebug_callback_fn = func;
  52
  53     kdbg_control_chud(TRUE, (void *)chudxnu_private_kdebug_callback);
  54     kdebug_enable |= 0x10;
  55
  56     return KERN_SUCCESS;
  57 }
  58
  59 __private_extern__
  60 kern_return_t chudxnu_kdebug_callback_cancel(void)
  61 {
  62     kdebug_callback_fn = NULL;
  63     kdbg_control_chud(FALSE, NULL);
  64     kdebug_enable &= ~(0x10);
  65
  66     return KERN_SUCCESS;
  67 }