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#define COMPAT_UTS_MACHINE	"ppc\0\0"
12
13typedef u32		compat_size_t;
14typedef s32		compat_ssize_t;
15typedef s32		compat_time_t;
16typedef s32		compat_clock_t;
17typedef s32		compat_pid_t;
18typedef u32		__compat_uid_t;
19typedef u32		__compat_gid_t;
20typedef u32		__compat_uid32_t;
21typedef u32		__compat_gid32_t;
22typedef u32		compat_mode_t;
23typedef u32		compat_ino_t;
24typedef u32		compat_dev_t;
25typedef s32		compat_off_t;
26typedef s64		compat_loff_t;
27typedef s16		compat_nlink_t;
28typedef u16		compat_ipc_pid_t;
29typedef s32		compat_daddr_t;
30typedef u32		compat_caddr_t;
31typedef __kernel_fsid_t	compat_fsid_t;
32typedef s32		compat_key_t;
33typedef s32		compat_timer_t;
34
35typedef s32		compat_int_t;
36typedef s32		compat_long_t;
37typedef s64		compat_s64;
38typedef u32		compat_uint_t;
39typedef u32		compat_ulong_t;
40typedef u64		compat_u64;
41
42struct compat_timespec {
43	compat_time_t	tv_sec;
44	s32		tv_nsec;
45};
46
47struct compat_timeval {
48	compat_time_t	tv_sec;
49	s32		tv_usec;
50};
51
52struct compat_stat {
53	compat_dev_t	st_dev;
54	compat_ino_t	st_ino;
55	compat_mode_t	st_mode;
56	compat_nlink_t	st_nlink;
57	__compat_uid32_t	st_uid;
58	__compat_gid32_t	st_gid;
59	compat_dev_t	st_rdev;
60	compat_off_t	st_size;
61	compat_off_t	st_blksize;
62	compat_off_t	st_blocks;
63	compat_time_t	st_atime;
64	u32		st_atime_nsec;
65	compat_time_t	st_mtime;
66	u32		st_mtime_nsec;
67	compat_time_t	st_ctime;
68	u32		st_ctime_nsec;
69	u32		__unused4[2];
70};
71
72struct compat_flock {
73	short		l_type;
74	short		l_whence;
75	compat_off_t	l_start;
76	compat_off_t	l_len;
77	compat_pid_t	l_pid;
78};
79
80#define F_GETLK64	12	/*  using 'struct flock64' */
81#define F_SETLK64	13
82#define F_SETLKW64	14
83
84struct compat_flock64 {
85	short		l_type;
86	short		l_whence;
87	compat_loff_t	l_start;
88	compat_loff_t	l_len;
89	compat_pid_t	l_pid;
90};
91
92struct compat_statfs {
93	int		f_type;
94	int		f_bsize;
95	int		f_blocks;
96	int		f_bfree;
97	int		f_bavail;
98	int		f_files;
99	int		f_ffree;
100	compat_fsid_t	f_fsid;
101	int		f_namelen;	/* SunOS ignores this field. */
102	int		f_frsize;
103	int		f_flags;
104	int		f_spare[4];
105};
106
107#define COMPAT_RLIM_OLD_INFINITY	0x7fffffff
108#define COMPAT_RLIM_INFINITY		0xffffffff
109
110typedef u32		compat_old_sigset_t;
111
112#define _COMPAT_NSIG		64
113#define _COMPAT_NSIG_BPW	32
114
115typedef u32		compat_sigset_word;
116
117#define COMPAT_OFF_T_MAX	0x7fffffff
118#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
119
120/*
121 * A pointer passed in from user mode. This should not
122 * be used for syscall parameters, just declare them
123 * as pointers because the syscall entry code will have
124 * appropriately converted them already.
125 */
126typedef	u32		compat_uptr_t;
127
128static inline void __user *compat_ptr(compat_uptr_t uptr)
129{
130	return (void __user *)(unsigned long)uptr;
131}
132
133static inline compat_uptr_t ptr_to_compat(void __user *uptr)
134{
135	return (u32)(unsigned long)uptr;
136}
137
138static inline void __user *arch_compat_alloc_user_space(long len)
139{
140	struct pt_regs *regs = current->thread.regs;
141	unsigned long usp = regs->gpr[1];
142
143	/*
144	 * We can't access below the stack pointer in the 32bit ABI and
145	 * can access 288 bytes in the 64bit ABI
146	 */
147	if (!is_32bit_task())
148		usp -= 288;
149
150	return (void __user *) (usp - len);
151}
152
153/*
154 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
155 * it we may as well define it.
156 */
157struct compat_ipc64_perm {
158	compat_key_t key;
159	__compat_uid_t uid;
160	__compat_gid_t gid;
161	__compat_uid_t cuid;
162	__compat_gid_t cgid;
163	compat_mode_t mode;
164	unsigned int seq;
165	unsigned int __pad2;
166	unsigned long __unused1;	/* yes they really are 64bit pads */
167	unsigned long __unused2;
168};
169
170struct compat_semid64_ds {
171	struct compat_ipc64_perm sem_perm;
172	unsigned int __unused1;
173	compat_time_t sem_otime;
174	unsigned int __unused2;
175	compat_time_t sem_ctime;
176	compat_ulong_t sem_nsems;
177	compat_ulong_t __unused3;
178	compat_ulong_t __unused4;
179};
180
181struct compat_msqid64_ds {
182	struct compat_ipc64_perm msg_perm;
183	unsigned int __unused1;
184	compat_time_t msg_stime;
185	unsigned int __unused2;
186	compat_time_t msg_rtime;
187	unsigned int __unused3;
188	compat_time_t msg_ctime;
189	compat_ulong_t msg_cbytes;
190	compat_ulong_t msg_qnum;
191	compat_ulong_t msg_qbytes;
192	compat_pid_t msg_lspid;
193	compat_pid_t msg_lrpid;
194	compat_ulong_t __unused4;
195	compat_ulong_t __unused5;
196};
197
198struct compat_shmid64_ds {
199	struct compat_ipc64_perm shm_perm;
200	unsigned int __unused1;
201	compat_time_t shm_atime;
202	unsigned int __unused2;
203	compat_time_t shm_dtime;
204	unsigned int __unused3;
205	compat_time_t shm_ctime;
206	unsigned int __unused4;
207	compat_size_t shm_segsz;
208	compat_pid_t shm_cpid;
209	compat_pid_t shm_lpid;
210	compat_ulong_t shm_nattch;
211	compat_ulong_t __unused5;
212	compat_ulong_t __unused6;
213};
214
215static inline int is_compat_task(void)
216{
217	return is_32bit_task();
218}
219
220#endif /* __KERNEL__ */
221#endif /* _ASM_POWERPC_COMPAT_H */
222