1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Architecture specific compatibility types
7 #include <linux/thread_info.h>
8 #include <linux/types.h>
10 #include <asm/ptrace.h>
12 #define COMPAT_USER_HZ 100
13 #define COMPAT_UTS_MACHINE "mips\0\0\0"
15 typedef u32 compat_size_t
;
16 typedef s32 compat_ssize_t
;
17 typedef s32 compat_time_t
;
18 typedef s32 compat_clock_t
;
19 typedef s32 compat_suseconds_t
;
21 typedef s32 compat_pid_t
;
22 typedef s32 __compat_uid_t
;
23 typedef s32 __compat_gid_t
;
24 typedef __compat_uid_t __compat_uid32_t
;
25 typedef __compat_gid_t __compat_gid32_t
;
26 typedef u32 compat_mode_t
;
27 typedef u32 compat_ino_t
;
28 typedef u32 compat_dev_t
;
29 typedef s32 compat_off_t
;
30 typedef s64 compat_loff_t
;
31 typedef u32 compat_nlink_t
;
32 typedef s32 compat_ipc_pid_t
;
33 typedef s32 compat_daddr_t
;
34 typedef s32 compat_caddr_t
;
38 typedef s32 compat_timer_t
;
39 typedef s32 compat_key_t
;
41 typedef s32 compat_int_t
;
42 typedef s32 compat_long_t
;
43 typedef s64 compat_s64
;
44 typedef u32 compat_uint_t
;
45 typedef u32 compat_ulong_t
;
46 typedef u64 compat_u64
;
47 typedef u32 compat_uptr_t
;
49 struct compat_timespec
{
54 struct compat_timeval
{
63 compat_mode_t st_mode
;
64 compat_nlink_t st_nlink
;
65 __compat_uid_t st_uid
;
66 __compat_gid_t st_gid
;
71 compat_time_t st_atime
;
73 compat_time_t st_mtime
;
75 compat_time_t st_ctime
;
97 struct compat_flock64
{
100 compat_loff_t l_start
;
105 struct compat_statfs
{
114 compat_fsid_t f_fsid
;
120 #define COMPAT_RLIM_INFINITY 0x7fffffffUL
122 typedef u32 compat_old_sigset_t
; /* at least 32 bits */
124 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
125 #define _COMPAT_NSIG_BPW 32
127 typedef u32 compat_sigset_word
;
129 typedef union compat_sigval
{
130 compat_int_t sival_int
;
131 compat_uptr_t sival_ptr
;
134 /* Can't use the generic version because si_code and si_errno are swapped */
136 #define SI_PAD_SIZE32 (128/sizeof(int) - 3)
138 typedef struct compat_siginfo
{
144 int _pad
[128 / sizeof(int) - 3];
148 compat_pid_t _pid
; /* sender's pid */
149 __compat_uid32_t _uid
; /* sender's uid */
152 /* POSIX.1b timers */
154 compat_timer_t _tid
; /* timer id */
155 int _overrun
; /* overrun count */
156 compat_sigval_t _sigval
; /* same as below */
159 /* POSIX.1b signals */
161 compat_pid_t _pid
; /* sender's pid */
162 __compat_uid32_t _uid
; /* sender's uid */
163 compat_sigval_t _sigval
;
168 compat_pid_t _pid
; /* which child */
169 __compat_uid32_t _uid
; /* sender's uid */
170 int _status
; /* exit code */
171 compat_clock_t _utime
;
172 compat_clock_t _stime
;
175 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
177 compat_uptr_t _addr
; /* faulting insn/memory ref. */
178 #ifdef __ARCH_SI_TRAPNO
179 int _trapno
; /* TRAP # which caused the signal */
181 short _addr_lsb
; /* LSB of the reported address */
183 compat_uptr_t _lower
;
184 compat_uptr_t _upper
;
190 compat_long_t _band
; /* POLL_IN, POLL_OUT, POLL_MSG */
195 compat_uptr_t _call_addr
; /* calling insn */
196 int _syscall
; /* triggering system call number */
197 compat_uint_t _arch
; /* AUDIT_ARCH_* of syscall */
202 #define COMPAT_OFF_T_MAX 0x7fffffff
203 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
206 * A pointer passed in from user mode. This should not
207 * be used for syscall parameters, just declare them
208 * as pointers because the syscall entry code will have
209 * appropriately converted them already.
212 static inline void __user
*compat_ptr(compat_uptr_t uptr
)
214 /* cast to a __user pointer via "unsigned long" makes sparse happy */
215 return (void __user
*)(unsigned long)(long)uptr
;
218 static inline compat_uptr_t
ptr_to_compat(void __user
*uptr
)
220 return (u32
)(unsigned long)uptr
;
223 static inline void __user
*arch_compat_alloc_user_space(long len
)
225 struct pt_regs
*regs
= (struct pt_regs
*)
226 ((unsigned long) current_thread_info() + THREAD_SIZE
- 32) - 1;
228 return (void __user
*) (regs
->regs
[29] - len
);
231 struct compat_ipc64_perm
{
233 __compat_uid32_t uid
;
234 __compat_gid32_t gid
;
235 __compat_uid32_t cuid
;
236 __compat_gid32_t cgid
;
239 unsigned short __pad2
;
240 compat_ulong_t __unused1
;
241 compat_ulong_t __unused2
;
244 struct compat_semid64_ds
{
245 struct compat_ipc64_perm sem_perm
;
246 compat_time_t sem_otime
;
247 compat_time_t sem_ctime
;
248 compat_ulong_t sem_nsems
;
249 compat_ulong_t __unused1
;
250 compat_ulong_t __unused2
;
253 struct compat_msqid64_ds
{
254 struct compat_ipc64_perm msg_perm
;
255 #ifndef CONFIG_CPU_LITTLE_ENDIAN
256 compat_ulong_t __unused1
;
258 compat_time_t msg_stime
;
259 #ifdef CONFIG_CPU_LITTLE_ENDIAN
260 compat_ulong_t __unused1
;
262 #ifndef CONFIG_CPU_LITTLE_ENDIAN
263 compat_ulong_t __unused2
;
265 compat_time_t msg_rtime
;
266 #ifdef CONFIG_CPU_LITTLE_ENDIAN
267 compat_ulong_t __unused2
;
269 #ifndef CONFIG_CPU_LITTLE_ENDIAN
270 compat_ulong_t __unused3
;
272 compat_time_t msg_ctime
;
273 #ifdef CONFIG_CPU_LITTLE_ENDIAN
274 compat_ulong_t __unused3
;
276 compat_ulong_t msg_cbytes
;
277 compat_ulong_t msg_qnum
;
278 compat_ulong_t msg_qbytes
;
279 compat_pid_t msg_lspid
;
280 compat_pid_t msg_lrpid
;
281 compat_ulong_t __unused4
;
282 compat_ulong_t __unused5
;
285 struct compat_shmid64_ds
{
286 struct compat_ipc64_perm shm_perm
;
287 compat_size_t shm_segsz
;
288 compat_time_t shm_atime
;
289 compat_time_t shm_dtime
;
290 compat_time_t shm_ctime
;
291 compat_pid_t shm_cpid
;
292 compat_pid_t shm_lpid
;
293 compat_ulong_t shm_nattch
;
294 compat_ulong_t __unused1
;
295 compat_ulong_t __unused2
;
298 /* MIPS has unusual order of fields in stack_t */
299 typedef struct compat_sigaltstack
{
301 compat_size_t ss_size
;
304 #define compat_sigaltstack compat_sigaltstack
306 static inline int is_compat_task(void)
308 return test_thread_flag(TIF_32BIT_ADDR
);
311 #endif /* _ASM_COMPAT_H */