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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#define COMPAT_USER_HZ 100
13#define COMPAT_UTS_MACHINE "mips\0\0\0"
14
15typedef u32 compat_size_t;
16typedef s32 compat_ssize_t;
17typedef s32 compat_time_t;
18typedef s32 compat_clock_t;
19typedef s32 compat_suseconds_t;
20
21typedef s32 compat_pid_t;
22typedef s32 __compat_uid_t;
23typedef s32 __compat_gid_t;
24typedef __compat_uid_t __compat_uid32_t;
25typedef __compat_gid_t __compat_gid32_t;
26typedef u32 compat_mode_t;
27typedef u32 compat_ino_t;
28typedef u32 compat_dev_t;
29typedef s32 compat_off_t;
30typedef s64 compat_loff_t;
31typedef u32 compat_nlink_t;
32typedef s32 compat_ipc_pid_t;
33typedef s32 compat_daddr_t;
34typedef s32 compat_caddr_t;
35typedef struct {
36 s32 val[2];
37} compat_fsid_t;
38typedef s32 compat_timer_t;
39typedef s32 compat_key_t;
40
41typedef s32 compat_int_t;
42typedef s32 compat_long_t;
43typedef s64 compat_s64;
44typedef u32 compat_uint_t;
45typedef u32 compat_ulong_t;
46typedef u64 compat_u64;
47typedef u32 compat_uptr_t;
48
49struct compat_timespec {
50 compat_time_t tv_sec;
51 s32 tv_nsec;
52};
53
54struct compat_timeval {
55 compat_time_t tv_sec;
56 s32 tv_usec;
57};
58
59struct compat_stat {
60 compat_dev_t st_dev;
61 s32 st_pad1[3];
62 compat_ino_t st_ino;
63 compat_mode_t st_mode;
64 compat_nlink_t st_nlink;
65 __compat_uid_t st_uid;
66 __compat_gid_t st_gid;
67 compat_dev_t st_rdev;
68 s32 st_pad2[2];
69 compat_off_t st_size;
70 s32 st_pad3;
71 compat_time_t st_atime;
72 s32 st_atime_nsec;
73 compat_time_t st_mtime;
74 s32 st_mtime_nsec;
75 compat_time_t st_ctime;
76 s32 st_ctime_nsec;
77 s32 st_blksize;
78 s32 st_blocks;
79 s32 st_pad4[14];
80};
81
82struct compat_flock {
83 short l_type;
84 short l_whence;
85 compat_off_t l_start;
86 compat_off_t l_len;
87 s32 l_sysid;
88 compat_pid_t l_pid;
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
128#define COMPAT_OFF_T_MAX 0x7fffffff
129
130/*
131 * A pointer passed in from user mode. This should not
132 * be used for syscall parameters, just declare them
133 * as pointers because the syscall entry code will have
134 * appropriately converted them already.
135 */
136
137static inline void __user *compat_ptr(compat_uptr_t uptr)
138{
139 /* cast to a __user pointer via "unsigned long" makes sparse happy */
140 return (void __user *)(unsigned long)(long)uptr;
141}
142
143static inline compat_uptr_t ptr_to_compat(void __user *uptr)
144{
145 return (u32)(unsigned long)uptr;
146}
147
148static inline void __user *arch_compat_alloc_user_space(long len)
149{
150 struct pt_regs *regs = (struct pt_regs *)
151 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
152
153 return (void __user *) (regs->regs[29] - len);
154}
155
156struct compat_ipc64_perm {
157 compat_key_t key;
158 __compat_uid32_t uid;
159 __compat_gid32_t gid;
160 __compat_uid32_t cuid;
161 __compat_gid32_t cgid;
162 compat_mode_t mode;
163 unsigned short seq;
164 unsigned short __pad2;
165 compat_ulong_t __unused1;
166 compat_ulong_t __unused2;
167};
168
169struct compat_semid64_ds {
170 struct compat_ipc64_perm sem_perm;
171 compat_time_t sem_otime;
172 compat_time_t sem_ctime;
173 compat_ulong_t sem_nsems;
174 compat_ulong_t __unused1;
175 compat_ulong_t __unused2;
176};
177
178struct compat_msqid64_ds {
179 struct compat_ipc64_perm msg_perm;
180#ifndef CONFIG_CPU_LITTLE_ENDIAN
181 compat_ulong_t __unused1;
182#endif
183 compat_time_t msg_stime;
184#ifdef CONFIG_CPU_LITTLE_ENDIAN
185 compat_ulong_t __unused1;
186#endif
187#ifndef CONFIG_CPU_LITTLE_ENDIAN
188 compat_ulong_t __unused2;
189#endif
190 compat_time_t msg_rtime;
191#ifdef CONFIG_CPU_LITTLE_ENDIAN
192 compat_ulong_t __unused2;
193#endif
194#ifndef CONFIG_CPU_LITTLE_ENDIAN
195 compat_ulong_t __unused3;
196#endif
197 compat_time_t msg_ctime;
198#ifdef CONFIG_CPU_LITTLE_ENDIAN
199 compat_ulong_t __unused3;
200#endif
201 compat_ulong_t msg_cbytes;
202 compat_ulong_t msg_qnum;
203 compat_ulong_t msg_qbytes;
204 compat_pid_t msg_lspid;
205 compat_pid_t msg_lrpid;
206 compat_ulong_t __unused4;
207 compat_ulong_t __unused5;
208};
209
210struct compat_shmid64_ds {
211 struct compat_ipc64_perm shm_perm;
212 compat_size_t shm_segsz;
213 compat_time_t shm_atime;
214 compat_time_t shm_dtime;
215 compat_time_t shm_ctime;
216 compat_pid_t shm_cpid;
217 compat_pid_t shm_lpid;
218 compat_ulong_t shm_nattch;
219 compat_ulong_t __unused1;
220 compat_ulong_t __unused2;
221};
222
223/* MIPS has unusual order of fields in stack_t */
224typedef struct compat_sigaltstack {
225 compat_uptr_t ss_sp;
226 compat_size_t ss_size;
227 int ss_flags;
228} compat_stack_t;
229#define compat_sigaltstack compat_sigaltstack
230
231static inline int is_compat_task(void)
232{
233 return test_thread_flag(TIF_32BIT_ADDR);
234}
235
236#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;
46
47struct compat_timespec {
48 compat_time_t tv_sec;
49 s32 tv_nsec;
50};
51
52struct compat_timeval {
53 compat_time_t tv_sec;
54 s32 tv_usec;
55};
56
57struct compat_stat {
58 compat_dev_t st_dev;
59 s32 st_pad1[3];
60 compat_ino_t st_ino;
61 compat_mode_t st_mode;
62 compat_nlink_t st_nlink;
63 __compat_uid_t st_uid;
64 __compat_gid_t st_gid;
65 compat_dev_t st_rdev;
66 s32 st_pad2[2];
67 compat_off_t st_size;
68 s32 st_pad3;
69 compat_time_t st_atime;
70 s32 st_atime_nsec;
71 compat_time_t st_mtime;
72 s32 st_mtime_nsec;
73 compat_time_t st_ctime;
74 s32 st_ctime_nsec;
75 s32 st_blksize;
76 s32 st_blocks;
77 s32 st_pad4[14];
78};
79
80struct compat_flock {
81 short l_type;
82 short l_whence;
83 compat_off_t l_start;
84 compat_off_t l_len;
85 s32 l_sysid;
86 compat_pid_t l_pid;
87 short __unused;
88 s32 pad[4];
89};
90
91#define F_GETLK64 33
92#define F_SETLK64 34
93#define F_SETLKW64 35
94
95struct compat_flock64 {
96 short l_type;
97 short l_whence;
98 compat_loff_t l_start;
99 compat_loff_t l_len;
100 compat_pid_t l_pid;
101};
102
103struct compat_statfs {
104 int f_type;
105 int f_bsize;
106 int f_frsize;
107 int f_blocks;
108 int f_bfree;
109 int f_files;
110 int f_ffree;
111 int f_bavail;
112 compat_fsid_t f_fsid;
113 int f_namelen;
114 int f_spare[6];
115};
116
117#define COMPAT_RLIM_INFINITY 0x7fffffffUL
118
119typedef u32 compat_old_sigset_t; /* at least 32 bits */
120
121#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
122#define _COMPAT_NSIG_BPW 32
123
124typedef u32 compat_sigset_word;
125
126#define COMPAT_OFF_T_MAX 0x7fffffff
127#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
128
129/*
130 * A pointer passed in from user mode. This should not
131 * be used for syscall parameters, just declare them
132 * as pointers because the syscall entry code will have
133 * appropriately converted them already.
134 */
135typedef u32 compat_uptr_t;
136
137static inline void __user *compat_ptr(compat_uptr_t uptr)
138{
139 /* cast to a __user pointer via "unsigned long" makes sparse happy */
140 return (void __user *)(unsigned long)(long)uptr;
141}
142
143static inline compat_uptr_t ptr_to_compat(void __user *uptr)
144{
145 return (u32)(unsigned long)uptr;
146}
147
148static inline void __user *arch_compat_alloc_user_space(long len)
149{
150 struct pt_regs *regs = (struct pt_regs *)
151 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
152
153 return (void __user *) (regs->regs[29] - len);
154}
155
156struct compat_ipc64_perm {
157 compat_key_t key;
158 __compat_uid32_t uid;
159 __compat_gid32_t gid;
160 __compat_uid32_t cuid;
161 __compat_gid32_t cgid;
162 compat_mode_t mode;
163 unsigned short seq;
164 unsigned short __pad2;
165 compat_ulong_t __unused1;
166 compat_ulong_t __unused2;
167};
168
169struct compat_semid64_ds {
170 struct compat_ipc64_perm sem_perm;
171 compat_time_t sem_otime;
172 compat_time_t sem_ctime;
173 compat_ulong_t sem_nsems;
174 compat_ulong_t __unused1;
175 compat_ulong_t __unused2;
176};
177
178struct compat_msqid64_ds {
179 struct compat_ipc64_perm msg_perm;
180#ifndef CONFIG_CPU_LITTLE_ENDIAN
181 compat_ulong_t __unused1;
182#endif
183 compat_time_t msg_stime;
184#ifdef CONFIG_CPU_LITTLE_ENDIAN
185 compat_ulong_t __unused1;
186#endif
187#ifndef CONFIG_CPU_LITTLE_ENDIAN
188 compat_ulong_t __unused2;
189#endif
190 compat_time_t msg_rtime;
191#ifdef CONFIG_CPU_LITTLE_ENDIAN
192 compat_ulong_t __unused2;
193#endif
194#ifndef CONFIG_CPU_LITTLE_ENDIAN
195 compat_ulong_t __unused3;
196#endif
197 compat_time_t msg_ctime;
198#ifdef CONFIG_CPU_LITTLE_ENDIAN
199 compat_ulong_t __unused3;
200#endif
201 compat_ulong_t msg_cbytes;
202 compat_ulong_t msg_qnum;
203 compat_ulong_t msg_qbytes;
204 compat_pid_t msg_lspid;
205 compat_pid_t msg_lrpid;
206 compat_ulong_t __unused4;
207 compat_ulong_t __unused5;
208};
209
210struct compat_shmid64_ds {
211 struct compat_ipc64_perm shm_perm;
212 compat_size_t shm_segsz;
213 compat_time_t shm_atime;
214 compat_time_t shm_dtime;
215 compat_time_t shm_ctime;
216 compat_pid_t shm_cpid;
217 compat_pid_t shm_lpid;
218 compat_ulong_t shm_nattch;
219 compat_ulong_t __unused1;
220 compat_ulong_t __unused2;
221};
222
223static inline int is_compat_task(void)
224{
225 return test_thread_flag(TIF_32BIT);
226}
227
228#endif /* _ASM_COMPAT_H */