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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_COMPAT_H
3#define _ASM_COMPAT_H
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/thread_info.h>
8#include <linux/types.h>
9#include <asm/page.h>
10#include <asm/ptrace.h>
11
12#include <asm-generic/compat.h>
13
14#define COMPAT_USER_HZ 100
15#define COMPAT_UTS_MACHINE "mips\0\0\0"
16
17typedef s32 __compat_uid_t;
18typedef s32 __compat_gid_t;
19typedef __compat_uid_t __compat_uid32_t;
20typedef __compat_gid_t __compat_gid32_t;
21typedef u32 compat_mode_t;
22typedef u32 compat_dev_t;
23typedef u32 compat_nlink_t;
24typedef s32 compat_ipc_pid_t;
25typedef s32 compat_caddr_t;
26typedef struct {
27 s32 val[2];
28} compat_fsid_t;
29typedef s64 compat_s64;
30typedef u64 compat_u64;
31
32struct compat_stat {
33 compat_dev_t st_dev;
34 s32 st_pad1[3];
35 compat_ino_t st_ino;
36 compat_mode_t st_mode;
37 compat_nlink_t st_nlink;
38 __compat_uid_t st_uid;
39 __compat_gid_t st_gid;
40 compat_dev_t st_rdev;
41 s32 st_pad2[2];
42 compat_off_t st_size;
43 s32 st_pad3;
44 old_time32_t st_atime;
45 s32 st_atime_nsec;
46 old_time32_t st_mtime;
47 s32 st_mtime_nsec;
48 old_time32_t st_ctime;
49 s32 st_ctime_nsec;
50 s32 st_blksize;
51 s32 st_blocks;
52 s32 st_pad4[14];
53};
54
55struct compat_flock {
56 short l_type;
57 short l_whence;
58 compat_off_t l_start;
59 compat_off_t l_len;
60 s32 l_sysid;
61 compat_pid_t l_pid;
62 s32 pad[4];
63};
64
65#define F_GETLK64 33
66#define F_SETLK64 34
67#define F_SETLKW64 35
68
69struct compat_flock64 {
70 short l_type;
71 short l_whence;
72 compat_loff_t l_start;
73 compat_loff_t l_len;
74 compat_pid_t l_pid;
75};
76
77struct compat_statfs {
78 int f_type;
79 int f_bsize;
80 int f_frsize;
81 int f_blocks;
82 int f_bfree;
83 int f_files;
84 int f_ffree;
85 int f_bavail;
86 compat_fsid_t f_fsid;
87 int f_namelen;
88 int f_flags;
89 int f_spare[5];
90};
91
92#define COMPAT_RLIM_INFINITY 0x7fffffffUL
93
94typedef u32 compat_old_sigset_t; /* at least 32 bits */
95
96#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
97#define _COMPAT_NSIG_BPW 32
98
99typedef u32 compat_sigset_word;
100
101#define COMPAT_OFF_T_MAX 0x7fffffff
102
103/*
104 * A pointer passed in from user mode. This should not
105 * be used for syscall parameters, just declare them
106 * as pointers because the syscall entry code will have
107 * appropriately converted them already.
108 */
109
110static inline void __user *compat_ptr(compat_uptr_t uptr)
111{
112 /* cast to a __user pointer via "unsigned long" makes sparse happy */
113 return (void __user *)(unsigned long)(long)uptr;
114}
115
116static inline compat_uptr_t ptr_to_compat(void __user *uptr)
117{
118 return (u32)(unsigned long)uptr;
119}
120
121static inline void __user *arch_compat_alloc_user_space(long len)
122{
123 struct pt_regs *regs = (struct pt_regs *)
124 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
125
126 return (void __user *) (regs->regs[29] - len);
127}
128
129struct compat_ipc64_perm {
130 compat_key_t key;
131 __compat_uid32_t uid;
132 __compat_gid32_t gid;
133 __compat_uid32_t cuid;
134 __compat_gid32_t cgid;
135 compat_mode_t mode;
136 unsigned short seq;
137 unsigned short __pad2;
138 compat_ulong_t __unused1;
139 compat_ulong_t __unused2;
140};
141
142struct compat_semid64_ds {
143 struct compat_ipc64_perm sem_perm;
144 compat_ulong_t sem_otime;
145 compat_ulong_t sem_ctime;
146 compat_ulong_t sem_nsems;
147 compat_ulong_t sem_otime_high;
148 compat_ulong_t sem_ctime_high;
149};
150
151struct compat_msqid64_ds {
152 struct compat_ipc64_perm msg_perm;
153#ifndef CONFIG_CPU_LITTLE_ENDIAN
154 compat_ulong_t msg_stime_high;
155#endif
156 compat_ulong_t msg_stime;
157#ifdef CONFIG_CPU_LITTLE_ENDIAN
158 compat_ulong_t msg_stime_high;
159#endif
160#ifndef CONFIG_CPU_LITTLE_ENDIAN
161 compat_ulong_t msg_rtime_high;
162#endif
163 compat_ulong_t msg_rtime;
164#ifdef CONFIG_CPU_LITTLE_ENDIAN
165 compat_ulong_t msg_rtime_high;
166#endif
167#ifndef CONFIG_CPU_LITTLE_ENDIAN
168 compat_ulong_t msg_ctime_high;
169#endif
170 compat_ulong_t msg_ctime;
171#ifdef CONFIG_CPU_LITTLE_ENDIAN
172 compat_ulong_t msg_ctime_high;
173#endif
174 compat_ulong_t msg_cbytes;
175 compat_ulong_t msg_qnum;
176 compat_ulong_t msg_qbytes;
177 compat_pid_t msg_lspid;
178 compat_pid_t msg_lrpid;
179 compat_ulong_t __unused4;
180 compat_ulong_t __unused5;
181};
182
183struct compat_shmid64_ds {
184 struct compat_ipc64_perm shm_perm;
185 compat_size_t shm_segsz;
186 compat_ulong_t shm_atime;
187 compat_ulong_t shm_dtime;
188 compat_ulong_t shm_ctime;
189 compat_pid_t shm_cpid;
190 compat_pid_t shm_lpid;
191 compat_ulong_t shm_nattch;
192 compat_ushort_t shm_atime_high;
193 compat_ushort_t shm_dtime_high;
194 compat_ushort_t shm_ctime_high;
195 compat_ushort_t __unused2;
196};
197
198/* MIPS has unusual order of fields in stack_t */
199typedef struct compat_sigaltstack {
200 compat_uptr_t ss_sp;
201 compat_size_t ss_size;
202 int ss_flags;
203} compat_stack_t;
204#define compat_sigaltstack compat_sigaltstack
205
206static inline int is_compat_task(void)
207{
208 return test_thread_flag(TIF_32BIT_ADDR);
209}
210
211#endif /* _ASM_COMPAT_H */
1#ifndef _ASM_COMPAT_H
2#define _ASM_COMPAT_H
3/*
4 * Architecture specific compatibility types
5 */
6#include <linux/thread_info.h>
7#include <linux/types.h>
8#include <asm/page.h>
9#include <asm/ptrace.h>
10
11#define COMPAT_USER_HZ 100
12#define COMPAT_UTS_MACHINE "mips\0\0\0"
13
14typedef u32 compat_size_t;
15typedef s32 compat_ssize_t;
16typedef s32 compat_time_t;
17typedef s32 compat_clock_t;
18typedef s32 compat_suseconds_t;
19
20typedef s32 compat_pid_t;
21typedef s32 __compat_uid_t;
22typedef s32 __compat_gid_t;
23typedef __compat_uid_t __compat_uid32_t;
24typedef __compat_gid_t __compat_gid32_t;
25typedef u32 compat_mode_t;
26typedef u32 compat_ino_t;
27typedef u32 compat_dev_t;
28typedef s32 compat_off_t;
29typedef s64 compat_loff_t;
30typedef u32 compat_nlink_t;
31typedef s32 compat_ipc_pid_t;
32typedef s32 compat_daddr_t;
33typedef s32 compat_caddr_t;
34typedef struct {
35 s32 val[2];
36} compat_fsid_t;
37typedef s32 compat_timer_t;
38typedef s32 compat_key_t;
39
40typedef s32 compat_int_t;
41typedef s32 compat_long_t;
42typedef s64 compat_s64;
43typedef u32 compat_uint_t;
44typedef u32 compat_ulong_t;
45typedef u64 compat_u64;
46typedef u32 compat_uptr_t;
47
48struct compat_timespec {
49 compat_time_t tv_sec;
50 s32 tv_nsec;
51};
52
53struct compat_timeval {
54 compat_time_t tv_sec;
55 s32 tv_usec;
56};
57
58struct compat_stat {
59 compat_dev_t st_dev;
60 s32 st_pad1[3];
61 compat_ino_t st_ino;
62 compat_mode_t st_mode;
63 compat_nlink_t st_nlink;
64 __compat_uid_t st_uid;
65 __compat_gid_t st_gid;
66 compat_dev_t st_rdev;
67 s32 st_pad2[2];
68 compat_off_t st_size;
69 s32 st_pad3;
70 compat_time_t st_atime;
71 s32 st_atime_nsec;
72 compat_time_t st_mtime;
73 s32 st_mtime_nsec;
74 compat_time_t st_ctime;
75 s32 st_ctime_nsec;
76 s32 st_blksize;
77 s32 st_blocks;
78 s32 st_pad4[14];
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 s32 l_sysid;
87 compat_pid_t l_pid;
88 short __unused;
89 s32 pad[4];
90};
91
92#define F_GETLK64 33
93#define F_SETLK64 34
94#define F_SETLKW64 35
95
96struct compat_flock64 {
97 short l_type;
98 short l_whence;
99 compat_loff_t l_start;
100 compat_loff_t l_len;
101 compat_pid_t l_pid;
102};
103
104struct compat_statfs {
105 int f_type;
106 int f_bsize;
107 int f_frsize;
108 int f_blocks;
109 int f_bfree;
110 int f_files;
111 int f_ffree;
112 int f_bavail;
113 compat_fsid_t f_fsid;
114 int f_namelen;
115 int f_flags;
116 int f_spare[5];
117};
118
119#define COMPAT_RLIM_INFINITY 0x7fffffffUL
120
121typedef u32 compat_old_sigset_t; /* at least 32 bits */
122
123#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
124#define _COMPAT_NSIG_BPW 32
125
126typedef u32 compat_sigset_word;
127
128typedef union compat_sigval {
129 compat_int_t sival_int;
130 compat_uptr_t sival_ptr;
131} compat_sigval_t;
132
133#define SI_PAD_SIZE32 (128/sizeof(int) - 3)
134
135typedef struct compat_siginfo {
136 int si_signo;
137 int si_code;
138 int si_errno;
139
140 union {
141 int _pad[SI_PAD_SIZE32];
142
143 /* kill() */
144 struct {
145 compat_pid_t _pid; /* sender's pid */
146 __compat_uid_t _uid; /* sender's uid */
147 } _kill;
148
149 /* SIGCHLD */
150 struct {
151 compat_pid_t _pid; /* which child */
152 __compat_uid_t _uid; /* sender's uid */
153 int _status; /* exit code */
154 compat_clock_t _utime;
155 compat_clock_t _stime;
156 } _sigchld;
157
158 /* IRIX SIGCHLD */
159 struct {
160 compat_pid_t _pid; /* which child */
161 compat_clock_t _utime;
162 int _status; /* exit code */
163 compat_clock_t _stime;
164 } _irix_sigchld;
165
166 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
167 struct {
168 s32 _addr; /* faulting insn/memory ref. */
169 } _sigfault;
170
171 /* SIGPOLL, SIGXFSZ (To do ...) */
172 struct {
173 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
174 int _fd;
175 } _sigpoll;
176
177 /* POSIX.1b timers */
178 struct {
179 timer_t _tid; /* timer id */
180 int _overrun; /* overrun count */
181 compat_sigval_t _sigval;/* same as below */
182 int _sys_private; /* not to be passed to user */
183 } _timer;
184
185 /* POSIX.1b signals */
186 struct {
187 compat_pid_t _pid; /* sender's pid */
188 __compat_uid_t _uid; /* sender's uid */
189 compat_sigval_t _sigval;
190 } _rt;
191
192 } _sifields;
193} compat_siginfo_t;
194
195#define COMPAT_OFF_T_MAX 0x7fffffff
196#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
197
198/*
199 * A pointer passed in from user mode. This should not
200 * be used for syscall parameters, just declare them
201 * as pointers because the syscall entry code will have
202 * appropriately converted them already.
203 */
204
205static inline void __user *compat_ptr(compat_uptr_t uptr)
206{
207 /* cast to a __user pointer via "unsigned long" makes sparse happy */
208 return (void __user *)(unsigned long)(long)uptr;
209}
210
211static inline compat_uptr_t ptr_to_compat(void __user *uptr)
212{
213 return (u32)(unsigned long)uptr;
214}
215
216static inline void __user *arch_compat_alloc_user_space(long len)
217{
218 struct pt_regs *regs = (struct pt_regs *)
219 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
220
221 return (void __user *) (regs->regs[29] - len);
222}
223
224struct compat_ipc64_perm {
225 compat_key_t key;
226 __compat_uid32_t uid;
227 __compat_gid32_t gid;
228 __compat_uid32_t cuid;
229 __compat_gid32_t cgid;
230 compat_mode_t mode;
231 unsigned short seq;
232 unsigned short __pad2;
233 compat_ulong_t __unused1;
234 compat_ulong_t __unused2;
235};
236
237struct compat_semid64_ds {
238 struct compat_ipc64_perm sem_perm;
239 compat_time_t sem_otime;
240 compat_time_t sem_ctime;
241 compat_ulong_t sem_nsems;
242 compat_ulong_t __unused1;
243 compat_ulong_t __unused2;
244};
245
246struct compat_msqid64_ds {
247 struct compat_ipc64_perm msg_perm;
248#ifndef CONFIG_CPU_LITTLE_ENDIAN
249 compat_ulong_t __unused1;
250#endif
251 compat_time_t msg_stime;
252#ifdef CONFIG_CPU_LITTLE_ENDIAN
253 compat_ulong_t __unused1;
254#endif
255#ifndef CONFIG_CPU_LITTLE_ENDIAN
256 compat_ulong_t __unused2;
257#endif
258 compat_time_t msg_rtime;
259#ifdef CONFIG_CPU_LITTLE_ENDIAN
260 compat_ulong_t __unused2;
261#endif
262#ifndef CONFIG_CPU_LITTLE_ENDIAN
263 compat_ulong_t __unused3;
264#endif
265 compat_time_t msg_ctime;
266#ifdef CONFIG_CPU_LITTLE_ENDIAN
267 compat_ulong_t __unused3;
268#endif
269 compat_ulong_t msg_cbytes;
270 compat_ulong_t msg_qnum;
271 compat_ulong_t msg_qbytes;
272 compat_pid_t msg_lspid;
273 compat_pid_t msg_lrpid;
274 compat_ulong_t __unused4;
275 compat_ulong_t __unused5;
276};
277
278struct compat_shmid64_ds {
279 struct compat_ipc64_perm shm_perm;
280 compat_size_t shm_segsz;
281 compat_time_t shm_atime;
282 compat_time_t shm_dtime;
283 compat_time_t shm_ctime;
284 compat_pid_t shm_cpid;
285 compat_pid_t shm_lpid;
286 compat_ulong_t shm_nattch;
287 compat_ulong_t __unused1;
288 compat_ulong_t __unused2;
289};
290
291/* MIPS has unusual order of fields in stack_t */
292typedef struct compat_sigaltstack {
293 compat_uptr_t ss_sp;
294 compat_size_t ss_size;
295 int ss_flags;
296} compat_stack_t;
297#define compat_sigaltstack compat_sigaltstack
298
299static inline int is_compat_task(void)
300{
301 return test_thread_flag(TIF_32BIT_ADDR);
302}
303
304#endif /* _ASM_COMPAT_H */