1/* SPDX-License-Identifier: GPL-2.0 */
 2/* 
 3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 
 4 */
 5
 6#ifndef __PTRACE_USER_H__
 7#define __PTRACE_USER_H__
 8
 9#include <sys/ptrace.h>
10#include <sysdep/ptrace_user.h>
11
12extern int ptrace_getregs(long pid, unsigned long *regs_out);
13extern int ptrace_setregs(long pid, unsigned long *regs_in);
14
15/* syscall emulation path in ptrace */
16
17#ifndef PTRACE_SYSEMU
18#define PTRACE_SYSEMU 31
19#endif
20#ifndef PTRACE_SYSEMU_SINGLESTEP
21#define PTRACE_SYSEMU_SINGLESTEP 32
22#endif
23
24/* On architectures, that started to support PTRACE_O_TRACESYSGOOD
25 * in linux 2.4, there are two different definitions of
26 * PTRACE_SETOPTIONS: linux 2.4 uses 21 while linux 2.6 uses 0x4200.
27 * For binary compatibility, 2.6 also supports the old "21", named
28 * PTRACE_OLDSETOPTION. On these architectures, UML always must use
29 * "21", to ensure the kernel runs on 2.4 and 2.6 host without
30 * recompilation. So, we use PTRACE_OLDSETOPTIONS in UML.
31 * We also want to be able to build the kernel on 2.4, which doesn't
32 * have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare
33 * PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS.
34 *
35 * On architectures, that start to support PTRACE_O_TRACESYSGOOD on
36 * linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't
37 * supported by the host kernel. In that case, our trick lets us use
38 * the new 0x4200 with the name PTRACE_OLDSETOPTIONS.
39 */
40#ifndef PTRACE_OLDSETOPTIONS
41#define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS
42#endif
43
44void set_using_sysemu(int value);
45int get_using_sysemu(void);
46extern int sysemu_supported;
47
48#define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \
49	(((int[3][3] ) { \
50		{ PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \
51		{ PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \
52		{ PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \
53		  PTRACE_SYSEMU_SINGLESTEP } }) \
54		[sysemu_mode][singlestep_mode])
55
56#endif

 
 1/* 
 2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __PTRACE_USER_H__
 7#define __PTRACE_USER_H__
 8
 9#include "sysdep/ptrace_user.h"
 
10
11extern int ptrace_getregs(long pid, unsigned long *regs_out);
12extern int ptrace_setregs(long pid, unsigned long *regs_in);
13
14/* syscall emulation path in ptrace */
15
16#ifndef PTRACE_SYSEMU
17#define PTRACE_SYSEMU 31
18#endif
19#ifndef PTRACE_SYSEMU_SINGLESTEP
20#define PTRACE_SYSEMU_SINGLESTEP 32
21#endif
22
23/* On architectures, that started to support PTRACE_O_TRACESYSGOOD
24 * in linux 2.4, there are two different definitions of
25 * PTRACE_SETOPTIONS: linux 2.4 uses 21 while linux 2.6 uses 0x4200.
26 * For binary compatibility, 2.6 also supports the old "21", named
27 * PTRACE_OLDSETOPTION. On these architectures, UML always must use
28 * "21", to ensure the kernel runs on 2.4 and 2.6 host without
29 * recompilation. So, we use PTRACE_OLDSETOPTIONS in UML.
30 * We also want to be able to build the kernel on 2.4, which doesn't
31 * have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare
32 * PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS.
33 *
34 * On architectures, that start to support PTRACE_O_TRACESYSGOOD on
35 * linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't
36 * supported by the host kernel. In that case, our trick lets us use
37 * the new 0x4200 with the name PTRACE_OLDSETOPTIONS.
38 */
39#ifndef PTRACE_OLDSETOPTIONS
40#define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS
41#endif
42
43void set_using_sysemu(int value);
44int get_using_sysemu(void);
45extern int sysemu_supported;
46
47#define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \
48	(((int[3][3] ) { \
49		{ PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \
50		{ PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \
51		{ PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \
52		  PTRACE_SYSEMU_SINGLESTEP } }) \
53		[sysemu_mode][singlestep_mode])
54
55#endif