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 #include <asm-generic/compat.h>
14 #define COMPAT_USER_HZ 100
15 #define COMPAT_UTS_MACHINE "mips\0\0\0"
17 typedef s32 __compat_uid_t;
18 typedef s32 __compat_gid_t;
19 typedef __compat_uid_t __compat_uid32_t;
20 typedef __compat_gid_t __compat_gid32_t;
21 typedef u32 compat_mode_t;
22 typedef u32 compat_dev_t;
23 typedef u32 compat_nlink_t;
24 typedef s32 compat_ipc_pid_t;
25 typedef s32 compat_caddr_t;
29 typedef s64 compat_s64;
30 typedef u64 compat_u64;
36 compat_mode_t st_mode;
37 compat_nlink_t st_nlink;
38 __compat_uid_t st_uid;
39 __compat_gid_t st_gid;
44 old_time32_t st_atime;
46 old_time32_t st_mtime;
48 old_time32_t st_ctime;
69 struct compat_flock64 {
72 compat_loff_t l_start;
77 struct compat_statfs {
92 #define COMPAT_RLIM_INFINITY 0x7fffffffUL
94 typedef u32 compat_old_sigset_t; /* at least 32 bits */
96 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
97 #define _COMPAT_NSIG_BPW 32
99 typedef u32 compat_sigset_word;
101 #define COMPAT_OFF_T_MAX 0x7fffffff
103 static inline void __user *arch_compat_alloc_user_space(long len)
105 struct pt_regs *regs = (struct pt_regs *)
106 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
108 return (void __user *) (regs->regs[29] - len);
111 struct compat_ipc64_perm {
113 __compat_uid32_t uid;
114 __compat_gid32_t gid;
115 __compat_uid32_t cuid;
116 __compat_gid32_t cgid;
119 unsigned short __pad2;
120 compat_ulong_t __unused1;
121 compat_ulong_t __unused2;
124 struct compat_semid64_ds {
125 struct compat_ipc64_perm sem_perm;
126 compat_ulong_t sem_otime;
127 compat_ulong_t sem_ctime;
128 compat_ulong_t sem_nsems;
129 compat_ulong_t sem_otime_high;
130 compat_ulong_t sem_ctime_high;
133 struct compat_msqid64_ds {
134 struct compat_ipc64_perm msg_perm;
135 #ifndef CONFIG_CPU_LITTLE_ENDIAN
136 compat_ulong_t msg_stime_high;
138 compat_ulong_t msg_stime;
139 #ifdef CONFIG_CPU_LITTLE_ENDIAN
140 compat_ulong_t msg_stime_high;
142 #ifndef CONFIG_CPU_LITTLE_ENDIAN
143 compat_ulong_t msg_rtime_high;
145 compat_ulong_t msg_rtime;
146 #ifdef CONFIG_CPU_LITTLE_ENDIAN
147 compat_ulong_t msg_rtime_high;
149 #ifndef CONFIG_CPU_LITTLE_ENDIAN
150 compat_ulong_t msg_ctime_high;
152 compat_ulong_t msg_ctime;
153 #ifdef CONFIG_CPU_LITTLE_ENDIAN
154 compat_ulong_t msg_ctime_high;
156 compat_ulong_t msg_cbytes;
157 compat_ulong_t msg_qnum;
158 compat_ulong_t msg_qbytes;
159 compat_pid_t msg_lspid;
160 compat_pid_t msg_lrpid;
161 compat_ulong_t __unused4;
162 compat_ulong_t __unused5;
165 struct compat_shmid64_ds {
166 struct compat_ipc64_perm shm_perm;
167 compat_size_t shm_segsz;
168 compat_ulong_t shm_atime;
169 compat_ulong_t shm_dtime;
170 compat_ulong_t shm_ctime;
171 compat_pid_t shm_cpid;
172 compat_pid_t shm_lpid;
173 compat_ulong_t shm_nattch;
174 compat_ushort_t shm_atime_high;
175 compat_ushort_t shm_dtime_high;
176 compat_ushort_t shm_ctime_high;
177 compat_ushort_t __unused2;
180 /* MIPS has unusual order of fields in stack_t */
181 typedef struct compat_sigaltstack {
183 compat_size_t ss_size;
186 #define compat_sigaltstack compat_sigaltstack
188 static inline int is_compat_task(void)
190 return test_thread_flag(TIF_32BIT_ADDR);
193 #endif /* _ASM_COMPAT_H */