xref: /netbsd-src/sys/arch/sh3/include/ptrace.h (revision f4ced9b4b933d33ea0d900c6ea8e1fc6e259d94f)
1 /*	$NetBSD: ptrace.h,v 1.19 2020/10/15 17:37:36 mgorny Exp $	*/
2 
3 /*
4  * Copyright (c) 1993 Christopher G. Demetriou
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *      This product includes software developed by Christopher G. Demetriou.
18  * 4. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifndef _SH3_PTRACE_H_
34 #define _SH3_PTRACE_H_
35 
36 /*
37  * sh3-dependent ptrace definitions
38  */
39 
40 #define PT_STEP		(PT_FIRSTMACH + 0)
41 
42 /* old struct reg (now struct __reg40) that was missing r_gbr */
43 #define	PT___GETREGS40	(PT_FIRSTMACH + 1)
44 #define	PT___SETREGS40	(PT_FIRSTMACH + 2)
45 
46 #define	PT_GETREGS	(PT_FIRSTMACH + 3)
47 #define	PT_SETREGS	(PT_FIRSTMACH + 4)
48 
49 #if 0 /* XXX: not yet, but reserve the numbers "leaked" to readelf(1). */
50 #define	PT_GETFPREGS	(PT_FIRSTMACH + 5)
51 #define	PT_SETFPREGS	(PT_FIRSTMACH + 6)
52 #endif
53 
54 #define	PT_SETSTEP	(PT_FIRSTMACH + 7)
55 #define	PT_CLEARSTEP	(PT_FIRSTMACH + 8)
56 
57 #define PT_MACHDEP_STRINGS \
58 	"PT_STEP", \
59 	"PT___GETREGS40", \
60 	"PT___SETREGS40", \
61 	"PT_GETREGS", \
62 	"PT_SETREGS", \
63 	"PT_GETFPREGS", \
64 	"PT_SETFPREGS", \
65 	"PT_SETSTEP", \
66 	"PT_CLEARSTEP"
67 
68 #include <machine/reg.h>
69 #define PTRACE_REG_PC(r)	(r)->r_spc
70 #define PTRACE_REG_FP(r)	(r)->r_r14
71 #define PTRACE_REG_SET_PC(r, v)	(r)->r_spc = (v)
72 #define PTRACE_REG_SP(r)	(r)->r_r15
73 #define PTRACE_REG_INTV(r)	(r)->r_r0
74 
75 #define PTRACE_ILLEGAL_ASM	__asm __volatile ("0: bra 0b; bra 0b" : : : "memory")
76 
77 #define PTRACE_BREAKPOINT_TRAP	0xc3
78 #define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xc3, 0xc3 })
79 #define PTRACE_BREAKPOINT_ASM	__asm __volatile("trapa %0" :: "i"(PTRACE_BREAKPOINT_TRAP))
80 #define PTRACE_BREAKPOINT_SIZE	2
81 
82 #ifdef _KERNEL
83 #ifdef _KERNEL_OPT
84 #include "opt_compat_netbsd.h"
85 #endif
86 
87 #ifdef COMPAT_40
88 
89 #define __HAVE_PTRACE_MACHDEP
90 
91 #define	PTRACE_MACHDEP_REQUEST_CASES			\
92 	case PT___GETREGS40:	/* FALLTHROUGH */	\
93 	case PT___SETREGS40:
94 
95 #endif /* COMPAT_40 */
96 
97 #ifdef __HAVE_PTRACE_MACHDEP
98 int ptrace_machdep_dorequest(struct lwp *, struct lwp **, int, void *, int);
99 #endif
100 
101 #define PTRACE_LWP_GETPRIVATE(l) (l)->l_md.md_regs->tf_gbr
102 #endif /* _KERNEL */
103 #endif /* !_SH3_PTRACE_H_ */
104