bsd/dev/ppc/chud/chud_bsd_callback.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30
  31 #include <stdint.h>
  32 #include <mach/boolean.h>
  33 #include <mach/mach_types.h>
  34
  35 #include <sys/syscall.h>
  36 #include <sys/types.h> /* u_int */
  37 #include <sys/proc.h> /* struct proc */
  38 #include <sys/systm.h> /* struct sysent */
  39 #include <sys/sysproto.h>
  40
  41 #pragma mark **** kern debug ****
  42 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);
  43 static chudxnu_kdebug_callback_func_t kdebug_callback_fn = NULL;
  44
  45 extern void kdbg_control_chudxnu(int val, void *fn);
  46 extern unsigned int kdebug_enable;
  47
  48 static void chudxnu_private_kdebug_callback(unsigned int debugid, unsigned int arg0, unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
  49 {
  50     if(kdebug_callback_fn) {
  51         (kdebug_callback_fn)(debugid, arg0, arg1, arg2, arg3, arg4);
  52     }
  53 }
  54
  55 __private_extern__
  56 kern_return_t chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t func)
  57 {
  58     kdebug_callback_fn = func;
  59
  60     kdbg_control_chud(TRUE, (void *)chudxnu_private_kdebug_callback);
  61     kdebug_enable |= 0x10;
  62
  63     return KERN_SUCCESS;
  64 }
  65
  66 __private_extern__
  67 kern_return_t chudxnu_kdebug_callback_cancel(void)
  68 {
  69     kdebug_callback_fn = NULL;
  70     kdbg_control_chud(FALSE, NULL);
  71     kdebug_enable &= ~(0x10);
  72
  73     return KERN_SUCCESS;
  74 }