x86: Move is_ia32_task to asm/thread_info.h from asm/compat.h
[~shefty/rdma-dev.git] / arch / x86 / include / asm / compat.h
1 #ifndef _ASM_X86_COMPAT_H
2 #define _ASM_X86_COMPAT_H
3
4 /*
5  * Architecture specific compatibility types
6  */
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <asm/processor.h>
10 #include <asm/user32.h>
11 #include <asm/unistd.h>
12
13 #define COMPAT_USER_HZ          100
14 #define COMPAT_UTS_MACHINE      "i686\0\0"
15
16 typedef u32             compat_size_t;
17 typedef s32             compat_ssize_t;
18 typedef s32             compat_time_t;
19 typedef s32             compat_clock_t;
20 typedef s32             compat_pid_t;
21 typedef u16             __compat_uid_t;
22 typedef u16             __compat_gid_t;
23 typedef u32             __compat_uid32_t;
24 typedef u32             __compat_gid32_t;
25 typedef u16             compat_mode_t;
26 typedef u32             compat_ino_t;
27 typedef u16             compat_dev_t;
28 typedef s32             compat_off_t;
29 typedef s64             compat_loff_t;
30 typedef u16             compat_nlink_t;
31 typedef u16             compat_ipc_pid_t;
32 typedef s32             compat_daddr_t;
33 typedef u32             compat_caddr_t;
34 typedef __kernel_fsid_t compat_fsid_t;
35 typedef s32             compat_timer_t;
36 typedef s32             compat_key_t;
37
38 typedef s32             compat_int_t;
39 typedef s32             compat_long_t;
40 typedef s64 __attribute__((aligned(4))) compat_s64;
41 typedef u32             compat_uint_t;
42 typedef u32             compat_ulong_t;
43 typedef u64 __attribute__((aligned(4))) compat_u64;
44
45 struct compat_timespec {
46         compat_time_t   tv_sec;
47         s32             tv_nsec;
48 };
49
50 struct compat_timeval {
51         compat_time_t   tv_sec;
52         s32             tv_usec;
53 };
54
55 struct compat_stat {
56         compat_dev_t    st_dev;
57         u16             __pad1;
58         compat_ino_t    st_ino;
59         compat_mode_t   st_mode;
60         compat_nlink_t  st_nlink;
61         __compat_uid_t  st_uid;
62         __compat_gid_t  st_gid;
63         compat_dev_t    st_rdev;
64         u16             __pad2;
65         u32             st_size;
66         u32             st_blksize;
67         u32             st_blocks;
68         u32             st_atime;
69         u32             st_atime_nsec;
70         u32             st_mtime;
71         u32             st_mtime_nsec;
72         u32             st_ctime;
73         u32             st_ctime_nsec;
74         u32             __unused4;
75         u32             __unused5;
76 };
77
78 struct compat_flock {
79         short           l_type;
80         short           l_whence;
81         compat_off_t    l_start;
82         compat_off_t    l_len;
83         compat_pid_t    l_pid;
84 };
85
86 #define F_GETLK64       12      /*  using 'struct flock64' */
87 #define F_SETLK64       13
88 #define F_SETLKW64      14
89
90 /*
91  * IA32 uses 4 byte alignment for 64 bit quantities,
92  * so we need to pack this structure.
93  */
94 struct compat_flock64 {
95         short           l_type;
96         short           l_whence;
97         compat_loff_t   l_start;
98         compat_loff_t   l_len;
99         compat_pid_t    l_pid;
100 } __attribute__((packed));
101
102 struct compat_statfs {
103         int             f_type;
104         int             f_bsize;
105         int             f_blocks;
106         int             f_bfree;
107         int             f_bavail;
108         int             f_files;
109         int             f_ffree;
110         compat_fsid_t   f_fsid;
111         int             f_namelen;      /* SunOS ignores this field. */
112         int             f_frsize;
113         int             f_flags;
114         int             f_spare[4];
115 };
116
117 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
118 #define COMPAT_RLIM_INFINITY            0xffffffff
119
120 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
121
122 #define _COMPAT_NSIG            64
123 #define _COMPAT_NSIG_BPW        32
124
125 typedef u32               compat_sigset_word;
126
127 #define COMPAT_OFF_T_MAX        0x7fffffff
128 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
129
130 struct compat_ipc64_perm {
131         compat_key_t key;
132         __compat_uid32_t uid;
133         __compat_gid32_t gid;
134         __compat_uid32_t cuid;
135         __compat_gid32_t cgid;
136         unsigned short mode;
137         unsigned short __pad1;
138         unsigned short seq;
139         unsigned short __pad2;
140         compat_ulong_t unused1;
141         compat_ulong_t unused2;
142 };
143
144 struct compat_semid64_ds {
145         struct compat_ipc64_perm sem_perm;
146         compat_time_t  sem_otime;
147         compat_ulong_t __unused1;
148         compat_time_t  sem_ctime;
149         compat_ulong_t __unused2;
150         compat_ulong_t sem_nsems;
151         compat_ulong_t __unused3;
152         compat_ulong_t __unused4;
153 };
154
155 struct compat_msqid64_ds {
156         struct compat_ipc64_perm msg_perm;
157         compat_time_t  msg_stime;
158         compat_ulong_t __unused1;
159         compat_time_t  msg_rtime;
160         compat_ulong_t __unused2;
161         compat_time_t  msg_ctime;
162         compat_ulong_t __unused3;
163         compat_ulong_t msg_cbytes;
164         compat_ulong_t msg_qnum;
165         compat_ulong_t msg_qbytes;
166         compat_pid_t   msg_lspid;
167         compat_pid_t   msg_lrpid;
168         compat_ulong_t __unused4;
169         compat_ulong_t __unused5;
170 };
171
172 struct compat_shmid64_ds {
173         struct compat_ipc64_perm shm_perm;
174         compat_size_t  shm_segsz;
175         compat_time_t  shm_atime;
176         compat_ulong_t __unused1;
177         compat_time_t  shm_dtime;
178         compat_ulong_t __unused2;
179         compat_time_t  shm_ctime;
180         compat_ulong_t __unused3;
181         compat_pid_t   shm_cpid;
182         compat_pid_t   shm_lpid;
183         compat_ulong_t shm_nattch;
184         compat_ulong_t __unused4;
185         compat_ulong_t __unused5;
186 };
187
188 /*
189  * The type of struct elf_prstatus.pr_reg in compatible core dumps.
190  */
191 #ifdef CONFIG_X86_X32_ABI
192 typedef struct user_regs_struct compat_elf_gregset_t;
193
194 #define PR_REG_SIZE(S) (test_thread_flag(TIF_IA32) ? 68 : 216)
195 #define PRSTATUS_SIZE(S) (test_thread_flag(TIF_IA32) ? 144 : 296)
196 #define SET_PR_FPVALID(S,V) \
197   do { *(int *) (((void *) &((S)->pr_reg)) + PR_REG_SIZE(0)) = (V); } \
198   while (0)
199
200 #define COMPAT_USE_64BIT_TIME \
201         (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT))
202 #else
203 typedef struct user_regs_struct32 compat_elf_gregset_t;
204 #endif
205
206 /*
207  * A pointer passed in from user mode. This should not
208  * be used for syscall parameters, just declare them
209  * as pointers because the syscall entry code will have
210  * appropriately converted them already.
211  */
212 typedef u32             compat_uptr_t;
213
214 static inline void __user *compat_ptr(compat_uptr_t uptr)
215 {
216         return (void __user *)(unsigned long)uptr;
217 }
218
219 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
220 {
221         return (u32)(unsigned long)uptr;
222 }
223
224 static inline void __user *arch_compat_alloc_user_space(long len)
225 {
226         compat_uptr_t sp;
227
228         if (test_thread_flag(TIF_IA32)) {
229                 sp = task_pt_regs(current)->sp;
230         } else {
231                 /* -128 for the x32 ABI redzone */
232                 sp = percpu_read(old_rsp) - 128;
233         }
234
235         return (void __user *)round_down(sp - len, 16);
236 }
237
238 static inline bool is_x32_task(void)
239 {
240 #ifdef CONFIG_X86_X32_ABI
241         if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)
242                 return true;
243 #endif
244         return false;
245 }
246
247 static inline bool is_compat_task(void)
248 {
249         return is_ia32_task() || is_x32_task();
250 }
251
252 #endif /* _ASM_X86_COMPAT_H */