bsd/dev/ppc/chud/chud_bsd_callback.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <stdint.h>
  30 #include <mach/boolean.h>
  31 #include <mach/mach_types.h>
  32
  33 #include <sys/syscall.h>
  34 #include <sys/types.h> /* u_int */
  35 #include <sys/proc.h> /* struct proc */
  36 #include <sys/systm.h> /* struct sysent */
  37 #include <sys/sysproto.h>
  38
  39 #pragma mark **** kern debug ****
  40 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);
  41 static chudxnu_kdebug_callback_func_t kdebug_callback_fn = NULL;
  42
  43 extern void kdbg_control_chudxnu(int val, void *fn);
  44 extern unsigned int kdebug_enable;
  45
  46 static void chudxnu_private_kdebug_callback(unsigned int debugid, unsigned int arg0, unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
  47 {
  48     if(kdebug_callback_fn) {
  49         (kdebug_callback_fn)(debugid, arg0, arg1, arg2, arg3, arg4);
  50     }
  51 }
  52
  53 __private_extern__
  54 kern_return_t chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t func)
  55 {
  56     kdebug_callback_fn = func;
  57
  58     kdbg_control_chud(TRUE, (void *)chudxnu_private_kdebug_callback);
  59     kdebug_enable |= 0x10;
  60
  61     return KERN_SUCCESS;
  62 }
  63
  64 __private_extern__
  65 kern_return_t chudxnu_kdebug_callback_cancel(void)
  66 {
  67     kdebug_callback_fn = NULL;
  68     kdbg_control_chud(FALSE, NULL);
  69     kdebug_enable &= ~(0x10);
  70
  71     return KERN_SUCCESS;
  72 }