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_uid_t	__compat_uid_t
13typedef s32		__compat_uid_t;
14typedef s32		__compat_gid_t;
15
16typedef __compat_uid_t	__compat_uid32_t;
17typedef __compat_gid_t	__compat_gid32_t;
18#define __compat_uid32_t __compat_uid32_t
19
20#define compat_statfs		compat_statfs
21#define compat_ipc64_perm	compat_ipc64_perm
22
23#define _COMPAT_NSIG		128		/* Don't ask !$@#% ...	*/
24#define _COMPAT_NSIG_BPW	32
25typedef u32		compat_sigset_word;
26
27#define COMPAT_RLIM_INFINITY	0x7fffffffUL
28
29#include <asm-generic/compat.h>
30
31#define COMPAT_UTS_MACHINE	"mips\0\0\0"
32
33typedef u32		compat_nlink_t;
34
35struct compat_stat {
36	compat_dev_t	st_dev;
37	s32		st_pad1[3];
38	compat_ino_t	st_ino;
39	compat_mode_t	st_mode;
40	compat_nlink_t	st_nlink;
41	__compat_uid_t	st_uid;
42	__compat_gid_t	st_gid;
43	compat_dev_t	st_rdev;
44	s32		st_pad2[2];
45	compat_off_t	st_size;
46	s32		st_pad3;
47	old_time32_t	st_atime;
48	s32		st_atime_nsec;
49	old_time32_t	st_mtime;
50	s32		st_mtime_nsec;
51	old_time32_t	st_ctime;
52	s32		st_ctime_nsec;
53	s32		st_blksize;
54	s32		st_blocks;
55	s32		st_pad4[14];
56};
57
58#define __ARCH_COMPAT_FLOCK_EXTRA_SYSID		s32 l_sysid;
59#define __ARCH_COMPAT_FLOCK_PAD			s32 pad[4];
60
61struct compat_statfs {
62	int		f_type;
63	int		f_bsize;
64	int		f_frsize;
65	int		f_blocks;
66	int		f_bfree;
67	int		f_files;
68	int		f_ffree;
69	int		f_bavail;
70	compat_fsid_t	f_fsid;
71	int		f_namelen;
72	int		f_flags;
73	int		f_spare[5];
74};
75
76struct compat_ipc64_perm {
77	compat_key_t key;
78	__compat_uid32_t uid;
79	__compat_gid32_t gid;
80	__compat_uid32_t cuid;
81	__compat_gid32_t cgid;
82	compat_mode_t mode;
83	unsigned short seq;
84	unsigned short __pad2;
85	compat_ulong_t __unused1;
86	compat_ulong_t __unused2;
87};
88
89struct compat_semid64_ds {
90	struct compat_ipc64_perm sem_perm;
91	compat_ulong_t	sem_otime;
92	compat_ulong_t	sem_ctime;
93	compat_ulong_t	sem_nsems;
94	compat_ulong_t	sem_otime_high;
95	compat_ulong_t	sem_ctime_high;
96};
97
98struct compat_msqid64_ds {
99	struct compat_ipc64_perm msg_perm;
100#ifndef CONFIG_CPU_LITTLE_ENDIAN
101	compat_ulong_t	msg_stime_high;
102#endif
103	compat_ulong_t	msg_stime;
104#ifdef CONFIG_CPU_LITTLE_ENDIAN
105	compat_ulong_t	msg_stime_high;
106#endif
107#ifndef CONFIG_CPU_LITTLE_ENDIAN
108	compat_ulong_t	msg_rtime_high;
109#endif
110	compat_ulong_t	msg_rtime;
111#ifdef CONFIG_CPU_LITTLE_ENDIAN
112	compat_ulong_t	msg_rtime_high;
113#endif
114#ifndef CONFIG_CPU_LITTLE_ENDIAN
115	compat_ulong_t	msg_ctime_high;
116#endif
117	compat_ulong_t	msg_ctime;
118#ifdef CONFIG_CPU_LITTLE_ENDIAN
119	compat_ulong_t	msg_ctime_high;
120#endif
121	compat_ulong_t	msg_cbytes;
122	compat_ulong_t	msg_qnum;
123	compat_ulong_t	msg_qbytes;
124	compat_pid_t	msg_lspid;
125	compat_pid_t	msg_lrpid;
126	compat_ulong_t	__unused4;
127	compat_ulong_t	__unused5;
128};
129
130struct compat_shmid64_ds {
131	struct compat_ipc64_perm shm_perm;
132	compat_size_t	shm_segsz;
133	compat_ulong_t	shm_atime;
134	compat_ulong_t	shm_dtime;
135	compat_ulong_t	shm_ctime;
136	compat_pid_t	shm_cpid;
137	compat_pid_t	shm_lpid;
138	compat_ulong_t	shm_nattch;
139	compat_ushort_t	shm_atime_high;
140	compat_ushort_t	shm_dtime_high;
141	compat_ushort_t	shm_ctime_high;
142	compat_ushort_t	__unused2;
143};
144
145/* MIPS has unusual order of fields in stack_t */
146typedef struct compat_sigaltstack {
147	compat_uptr_t			ss_sp;
148	compat_size_t			ss_size;
149	int				ss_flags;
150} compat_stack_t;
151#define compat_sigaltstack compat_sigaltstack
152
153static inline int is_compat_task(void)
154{
155	return test_thread_flag(TIF_32BIT_ADDR);
156}
157
158#endif /* _ASM_COMPAT_H */
159