1/*-
2 * Copyright (c) 2017 John Baldwin <jhb@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/sys/arm/arm/ptrace_machdep.c 367457 2020-11-07 18:10:59Z dim $");
29
30#include <sys/types.h>
31#include <sys/proc.h>
32#include <sys/ptrace.h>
33#ifdef VFP
34#include <machine/vfp.h>
35#endif
36
37int
38cpu_ptrace(struct thread *td, int req, void *addr, int data)
39{
40#ifdef VFP
41	mcontext_vfp_t vfp;
42#endif
43	int error;
44
45	switch (req) {
46#ifdef VFP
47	case PT_GETVFPREGS:
48		get_vfpcontext(td, &vfp);
49		error = copyout(&vfp, addr, sizeof(vfp));
50		break;
51	case PT_SETVFPREGS:
52		error = copyin(addr, &vfp, sizeof(vfp));
53		if (error == 0)
54			set_vfpcontext(td, &vfp);
55		break;
56#endif
57	default:
58		error = EINVAL;
59	}
60
61	return (error);
62}
63