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