2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
6 #ifndef __PTRACE_USER_H__
7 #define __PTRACE_USER_H__
9 #include "sysdep/ptrace_user.h"
11 extern int ptrace_getregs(long pid, unsigned long *regs_out);
12 extern int ptrace_setregs(long pid, unsigned long *regs_in);
14 /* syscall emulation path in ptrace */
17 #define PTRACE_SYSEMU 31
19 #ifndef PTRACE_SYSEMU_SINGLESTEP
20 #define PTRACE_SYSEMU_SINGLESTEP 32
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 to be the same as PTRACE_SETOPTIONS.
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.
39 #ifndef PTRACE_OLDSETOPTIONS
40 #define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS
43 void set_using_sysemu(int value);
44 int get_using_sysemu(void);
45 extern int sysemu_supported;
47 #define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \
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])