1/*- 2 * Copyright (c) 2003 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/proc.h> 33#include <sys/ptrace.h> 34#include <machine/frame.h> 35 36int 37cpu_ptrace(struct thread *td, int req, void *addr, int data) 38{ 39 struct trapframe *tf; 40 uint64_t *kstack; 41 int error; 42 43 error = EINVAL; 44 tf = td->td_frame; 45 46 switch (req) { 47 case PT_GETKSTACK: 48 if (data >= 0 && data < (tf->tf_special.ndirty >> 3)) { 49 kstack = (uint64_t*)(td->td_kstack + 50 (tf->tf_special.bspstore & 0x1ffUL)); 51 error = copyout(kstack + data, addr, 8); 52 } 53 break; 54 case PT_SETKSTACK: 55 if (data >= 0 && data < (tf->tf_special.ndirty >> 3)) { 56 kstack = (uint64_t*)(td->td_kstack + 57 (tf->tf_special.bspstore & 0x1ffUL)); 58 error = copyin(addr, kstack + data, 8); 59 } 60 break; 61 } 62 63 return (error); 64} 65