1#ifndef _ASM_POWERPC_COMPAT_H
2#define _ASM_POWERPC_COMPAT_H
3#ifdef __KERNEL__
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/types.h>
8#include <linux/sched.h>
9
10#define COMPAT_USER_HZ	100
11
12typedef u32		compat_size_t;
13typedef s32		compat_ssize_t;
14typedef s32		compat_time_t;
15typedef s32		compat_clock_t;
16typedef s32		compat_pid_t;
17typedef u32		__compat_uid_t;
18typedef u32		__compat_gid_t;
19typedef u32		__compat_uid32_t;
20typedef u32		__compat_gid32_t;
21typedef u32		compat_mode_t;
22typedef u32		compat_ino_t;
23typedef u32		compat_dev_t;
24typedef s32		compat_off_t;
25typedef s64		compat_loff_t;
26typedef s16		compat_nlink_t;
27typedef u16		compat_ipc_pid_t;
28typedef s32		compat_daddr_t;
29typedef u32		compat_caddr_t;
30typedef __kernel_fsid_t	compat_fsid_t;
31typedef s32		compat_key_t;
32typedef s32		compat_timer_t;
33
34typedef s32		compat_int_t;
35typedef s32		compat_long_t;
36typedef u32		compat_uint_t;
37typedef u32		compat_ulong_t;
38
39struct compat_timespec {
40	compat_time_t	tv_sec;
41	s32		tv_nsec;
42};
43
44struct compat_timeval {
45	compat_time_t	tv_sec;
46	s32		tv_usec;
47};
48
49struct compat_stat {
50	compat_dev_t	st_dev;
51	compat_ino_t	st_ino;
52	compat_mode_t	st_mode;
53	compat_nlink_t	st_nlink;
54	__compat_uid32_t	st_uid;
55	__compat_gid32_t	st_gid;
56	compat_dev_t	st_rdev;
57	compat_off_t	st_size;
58	compat_off_t	st_blksize;
59	compat_off_t	st_blocks;
60	compat_time_t	st_atime;
61	u32		st_atime_nsec;
62	compat_time_t	st_mtime;
63	u32		st_mtime_nsec;
64	compat_time_t	st_ctime;
65	u32		st_ctime_nsec;
66	u32		__unused4[2];
67};
68
69struct compat_flock {
70	short		l_type;
71	short		l_whence;
72	compat_off_t	l_start;
73	compat_off_t	l_len;
74	compat_pid_t	l_pid;
75};
76
77#define F_GETLK64	12	/*  using 'struct flock64' */
78#define F_SETLK64	13
79#define F_SETLKW64	14
80
81struct compat_flock64 {
82	short		l_type;
83	short		l_whence;
84	compat_loff_t	l_start;
85	compat_loff_t	l_len;
86	compat_pid_t	l_pid;
87};
88
89struct compat_statfs {
90	int		f_type;
91	int		f_bsize;
92	int		f_blocks;
93	int		f_bfree;
94	int		f_bavail;
95	int		f_files;
96	int		f_ffree;
97	compat_fsid_t	f_fsid;
98	int		f_namelen;	/* SunOS ignores this field. */
99	int		f_frsize;
100	int		f_spare[5];
101};
102
103#define COMPAT_RLIM_OLD_INFINITY	0x7fffffff
104#define COMPAT_RLIM_INFINITY		0xffffffff
105
106typedef u32		compat_old_sigset_t;
107
108#define _COMPAT_NSIG		64
109#define _COMPAT_NSIG_BPW	32
110
111typedef u32		compat_sigset_word;
112
113#define COMPAT_OFF_T_MAX	0x7fffffff
114#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
115
116/*
117 * A pointer passed in from user mode. This should not
118 * be used for syscall parameters, just declare them
119 * as pointers because the syscall entry code will have
120 * appropriately comverted them already.
121 */
122typedef	u32		compat_uptr_t;
123
124static inline void __user *compat_ptr(compat_uptr_t uptr)
125{
126	return (void __user *)(unsigned long)uptr;
127}
128
129static inline compat_uptr_t ptr_to_compat(void __user *uptr)
130{
131	return (u32)(unsigned long)uptr;
132}
133
134static inline void __user *compat_alloc_user_space(long len)
135{
136	struct pt_regs *regs = current->thread.regs;
137	unsigned long usp = regs->gpr[1];
138
139	/*
140	 * We cant access below the stack pointer in the 32bit ABI and
141	 * can access 288 bytes in the 64bit ABI
142	 */
143	if (!(test_thread_flag(TIF_32BIT)))
144		usp -= 288;
145
146	return (void __user *) (usp - len);
147}
148
149/*
150 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
151 * it we may as well define it.
152 */
153struct compat_ipc64_perm {
154	compat_key_t key;
155	__compat_uid_t uid;
156	__compat_gid_t gid;
157	__compat_uid_t cuid;
158	__compat_gid_t cgid;
159	compat_mode_t mode;
160	unsigned int seq;
161	unsigned int __pad2;
162	unsigned long __unused1;	/* yes they really are 64bit pads */
163	unsigned long __unused2;
164};
165
166struct compat_semid64_ds {
167	struct compat_ipc64_perm sem_perm;
168	unsigned int __unused1;
169	compat_time_t sem_otime;
170	unsigned int __unused2;
171	compat_time_t sem_ctime;
172	compat_ulong_t sem_nsems;
173	compat_ulong_t __unused3;
174	compat_ulong_t __unused4;
175};
176
177struct compat_msqid64_ds {
178	struct compat_ipc64_perm msg_perm;
179	unsigned int __unused1;
180	compat_time_t msg_stime;
181	unsigned int __unused2;
182	compat_time_t msg_rtime;
183	unsigned int __unused3;
184	compat_time_t msg_ctime;
185	compat_ulong_t msg_cbytes;
186	compat_ulong_t msg_qnum;
187	compat_ulong_t msg_qbytes;
188	compat_pid_t msg_lspid;
189	compat_pid_t msg_lrpid;
190	compat_ulong_t __unused4;
191	compat_ulong_t __unused5;
192};
193
194struct compat_shmid64_ds {
195	struct compat_ipc64_perm shm_perm;
196	unsigned int __unused1;
197	compat_time_t shm_atime;
198	unsigned int __unused2;
199	compat_time_t shm_dtime;
200	unsigned int __unused3;
201	compat_time_t shm_ctime;
202	unsigned int __unused4;
203	compat_size_t shm_segsz;
204	compat_pid_t shm_cpid;
205	compat_pid_t shm_lpid;
206	compat_ulong_t shm_nattch;
207	compat_ulong_t __unused5;
208	compat_ulong_t __unused6;
209};
210
211#endif /* __KERNEL__ */
212#endif /* _ASM_POWERPC_COMPAT_H */
213