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1da177e4 | 1 | /* |
95906b24 | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
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 | ||
11 | extern int ptrace_getregs(long pid, unsigned long *regs_out); | |
12 | extern int ptrace_setregs(long pid, unsigned long *regs_in); | |
1da177e4 LT |
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 | |
fd589a8f | 32 | * PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS. |
1da177e4 LT |
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 | ||
43 | void set_using_sysemu(int value); | |
44 | int get_using_sysemu(void); | |
45 | extern 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 }, \ | |
95906b24 JD |
51 | { PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \ |
52 | PTRACE_SYSEMU_SINGLESTEP } }) \ | |
1da177e4 LT |
53 | [sysemu_mode][singlestep_mode]) |
54 | ||
55 | #endif |