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/*
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#ifndef __PTRACE_USER_H__
#define __PTRACE_USER_H__
#include <sys/ptrace.h>
#include <sysdep/ptrace_user.h>
extern int ptrace_getregs(long pid, unsigned long *regs_out);
extern int ptrace_setregs(long pid, unsigned long *regs_in);
/* syscall emulation path in ptrace */
#ifndef PTRACE_SYSEMU
#define PTRACE_SYSEMU 31
#endif
#ifndef PTRACE_SYSEMU_SINGLESTEP
#define PTRACE_SYSEMU_SINGLESTEP 32
#endif
/* On architectures, that started to support PTRACE_O_TRACESYSGOOD
* in linux 2.4, there are two different definitions of
* PTRACE_SETOPTIONS: linux 2.4 uses 21 while linux 2.6 uses 0x4200.
* For binary compatibility, 2.6 also supports the old "21", named
* PTRACE_OLDSETOPTION. On these architectures, UML always must use
* "21", to ensure the kernel runs on 2.4 and 2.6 host without
* recompilation. So, we use PTRACE_OLDSETOPTIONS in UML.
* We also want to be able to build the kernel on 2.4, which doesn't
* have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare
* PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS.
*
* On architectures, that start to support PTRACE_O_TRACESYSGOOD on
* linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't
* supported by the host kernel. In that case, our trick lets us use
* the new 0x4200 with the name PTRACE_OLDSETOPTIONS.
*/
#ifndef PTRACE_OLDSETOPTIONS
#define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS
#endif
void set_using_sysemu(int value);
int get_using_sysemu(void);
extern int sysemu_supported;
#define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \
(((int[3][3] ) { \
{ PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \
{ PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \
{ PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \
PTRACE_SYSEMU_SINGLESTEP } }) \
[sysemu_mode][singlestep_mode])
#endif