text: /*
   * Copyright (c) 2003 Marcel Moolenaar
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: src/sys/ia64/ia64/ptrace_machdep.c,v 1.3 2003/10/28 19:38:26 marcel Exp $");
  
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/proc.h>
  #include <sys/ptrace.h>
  #include <machine/frame.h>
  
  int
  cpu_ptrace(struct thread *td, int req, void *addr, int data)
  {
  	struct trapframe *tf;
  	uint64_t *kstack;
  	int error;
  
  	error = EINVAL;
  	tf = td->td_frame;
  
  	switch (req) {
  	case PT_GETKSTACK:
  		if (data >= 0 && data < (tf->tf_special.ndirty >> 3)) {
  			kstack = (uint64_t*)(td->td_kstack +
  			    (tf->tf_special.bspstore & 0x1ffUL));
  			error = copyout(kstack + data, addr, 8);
  		}
  		break;
  	case PT_SETKSTACK:
  		if (data >= 0 && data < (tf->tf_special.ndirty >> 3)) {
  			kstack = (uint64_t*)(td->td_kstack +
  			    (tf->tf_special.bspstore & 0x1ffUL));
  			error = copyin(addr, kstack + data, 8);
  		}
  		break;
  	}
  
  	return (error);
  }
  