1/*	$NetBSD: ptrace.h,v 1.17 2020/12/14 01:58:48 rin Exp $	*/
 2
 3/*
 4 * Copyright (c) 1995 Frank Lancaster
 5 * Copyright (c) 1995 Tools GmbH
 6 * All rights reserved.
 7 *
 8 * Redistribution and use in source and binary forms, with or without
 9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by TooLs GmbH.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <arm/cdefs.h>
35
36/*
37 * arm-dependent ptrace definitions
38 */
39#if 0
40/* Exposed to userland for NetBSD 1.6 to 9. Do not reuse for other purpose. */
41#define PT_STEP		(PT_FIRSTMACH + 0) /* Not implemented */
42#endif
43#define	PT_GETREGS	(PT_FIRSTMACH + 1)
44#define	PT_SETREGS	(PT_FIRSTMACH + 2)
45/* 3 and 4 are for FPE registers */
46#define	PT_GETFPREGS	(PT_FIRSTMACH + 5)
47#define	PT_SETFPREGS	(PT_FIRSTMACH + 6)
48#if 0
49/* Exposed to userland for NetBSD 8 to 9. Do not reuse for other purpose. */
50#define PT_SETSTEP	(PT_FIRSTMACH + 7) /* Not implemented */
51#define PT_CLEARSTEP	(PT_FIRSTMACH + 8) /* Not implemented */
52#endif
53
54#define PT_MACHDEP_STRINGS \
55	"n/a PT_STEP", \
56	"PT_GETREGS", \
57	"PT_SETREGS", \
58	"old PT_GETFPREGS", \
59	"old PT_SETFPREGS", \
60	"PT_GETFPREGS", \
61	"PT_SETFPREGS", \
62	"n/a PT_SETSTEP", \
63	"n/a PT_CLEARSTEP",
64
65#include <machine/reg.h>
66#define PTRACE_REG_PC(_r)		(_r)->r_pc
67#define PTRACE_REG_FP(_r)		(_r)->r[11]
68#define PTRACE_REG_SET_PC(_r, _v)	(_r)->r_pc = (_v)
69#define PTRACE_REG_SP(_r)		(_r)->r_sp
70#define PTRACE_REG_INTRV(_r)		(_r)->r[0]
71
72#define PTRACE_ILLEGAL_ASM	__asm __volatile ("udf #0" : : : "memory")
73
74#if defined(__ARMEL__) || defined(_ARM_ARCH_BE8)
75#define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xfe, 0xde, 0xff, 0xe7 })
76#else
77#define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xe7, 0xff, 0xde, 0xfe })
78#endif
79
80#ifdef _ARM_ARCH_BE8
81#define PTRACE_BREAKPOINT_INSN	0xfedeffe7
82#else
83#define PTRACE_BREAKPOINT_INSN	0xe7ffdefe
84#endif
85
86#define PTRACE_BREAKPOINT_ASM	__asm __volatile (".word " ___STRING(PTRACE_BREAKPOINT_INSN) )
87#define PTRACE_BREAKPOINT_SIZE	4