Release 4.14 arch/um/include/shared/ptrace_user.h

/* 
 * 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
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Jeff Dike
56
57.73%
4
50.00%
Paolo 'Blaisorblade' Giarrusso
27
27.84%
1
12.50%
Bodo Stroesser
9
9.28%
1
12.50%
Al Viro
4
4.12%
1
12.50%
Anand Gadiyar
1
1.03%
1
12.50%
Total
97
100.00%
8
100.00%
Directory: arch/um/include/shared

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