compat.h revision e28cbf22933d0c0ccaf3c4c27a1a263b41f73859 
1#ifndef _ASM_PARISC_COMPAT_H
2#define _ASM_PARISC_COMPAT_H
3/*
4 * Architecture specific compatibility types
5 */
6#include <linux/types.h>
7#include <linux/sched.h>
8#include <linux/thread_info.h>
9
10#define COMPAT_USER_HZ 		100
11#define COMPAT_UTS_MACHINE	"parisc\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 u16	compat_mode_t;
23typedef u32	compat_ino_t;
24typedef u32	compat_dev_t;
25typedef s32	compat_off_t;
26typedef s64	compat_loff_t;
27typedef u16	compat_nlink_t;
28typedef u16	compat_ipc_pid_t;
29typedef s32	compat_daddr_t;
30typedef u32	compat_caddr_t;
31typedef s32	compat_timer_t;
32
33typedef s32	compat_int_t;
34typedef s32	compat_long_t;
35typedef s64	compat_s64;
36typedef u32	compat_uint_t;
37typedef u32	compat_ulong_t;
38typedef u64	compat_u64;
39
40struct compat_timespec {
41	compat_time_t		tv_sec;
42	s32			tv_nsec;
43};
44
45struct compat_timeval {
46	compat_time_t		tv_sec;
47	s32			tv_usec;
48};
49
50struct compat_stat {
51	compat_dev_t		st_dev;	/* dev_t is 32 bits on parisc */
52	compat_ino_t		st_ino;	/* 32 bits */
53	compat_mode_t		st_mode;	/* 16 bits */
54	compat_nlink_t  	st_nlink;	/* 16 bits */
55	u16			st_reserved1;	/* old st_uid */
56	u16			st_reserved2;	/* old st_gid */
57	compat_dev_t		st_rdev;
58	compat_off_t		st_size;
59	compat_time_t		st_atime;
60	u32			st_atime_nsec;
61	compat_time_t		st_mtime;
62	u32			st_mtime_nsec;
63	compat_time_t		st_ctime;
64	u32			st_ctime_nsec;
65	s32			st_blksize;
66	s32			st_blocks;
67	u32			__unused1;	/* ACL stuff */
68	compat_dev_t		__unused2;	/* network */
69	compat_ino_t		__unused3;	/* network */
70	u32			__unused4;	/* cnodes */
71	u16			__unused5;	/* netsite */
72	short			st_fstype;
73	compat_dev_t		st_realdev;
74	u16			st_basemode;
75	u16			st_spareshort;
76	__compat_uid32_t	st_uid;
77	__compat_gid32_t	st_gid;
78	u32			st_spare4[3];
79};
80
81struct compat_flock {
82	short			l_type;
83	short			l_whence;
84	compat_off_t		l_start;
85	compat_off_t		l_len;
86	compat_pid_t		l_pid;
87};
88
89struct compat_flock64 {
90	short			l_type;
91	short			l_whence;
92	compat_loff_t		l_start;
93	compat_loff_t		l_len;
94	compat_pid_t		l_pid;
95};
96
97struct compat_statfs {
98	s32		f_type;
99	s32		f_bsize;
100	s32		f_blocks;
101	s32		f_bfree;
102	s32		f_bavail;
103	s32		f_files;
104	s32		f_ffree;
105	__kernel_fsid_t	f_fsid;
106	s32		f_namelen;
107	s32		f_frsize;
108	s32		f_spare[5];
109};
110
111struct compat_sigcontext {
112	compat_int_t sc_flags;
113	compat_int_t sc_gr[32]; /* PSW in sc_gr[0] */
114	u64 sc_fr[32];
115	compat_int_t sc_iasq[2];
116	compat_int_t sc_iaoq[2];
117	compat_int_t sc_sar; /* cr11 */
118};
119
120#define COMPAT_RLIM_INFINITY 0xffffffff
121
122typedef u32		compat_old_sigset_t;	/* at least 32 bits */
123
124#define _COMPAT_NSIG		64
125#define _COMPAT_NSIG_BPW	32
126
127typedef u32		compat_sigset_word;
128
129#define COMPAT_OFF_T_MAX	0x7fffffff
130#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
131
132/*
133 * A pointer passed in from user mode. This should not
134 * be used for syscall parameters, just declare them
135 * as pointers because the syscall entry code will have
136 * appropriately converted them already.
137 */
138typedef	u32		compat_uptr_t;
139
140static inline void __user *compat_ptr(compat_uptr_t uptr)
141{
142	return (void __user *)(unsigned long)uptr;
143}
144
145static inline compat_uptr_t ptr_to_compat(void __user *uptr)
146{
147	return (u32)(unsigned long)uptr;
148}
149
150static __inline__ void __user *compat_alloc_user_space(long len)
151{
152	struct pt_regs *regs = &current->thread.regs;
153	return (void __user *)regs->gr[30];
154}
155
156static inline int __is_compat_task(struct task_struct *t)
157{
158	return test_ti_thread_flag(task_thread_info(t), TIF_32BIT);
159}
160
161static inline int is_compat_task(void)
162{
163	return __is_compat_task(current);
164}
165
166#endif /* _ASM_PARISC_COMPAT_H */
167