1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_COMPAT_H
3 #define _ASM_POWERPC_COMPAT_H
6 * Architecture specific compatibility types
8 #include <linux/types.h>
9 #include <linux/sched.h>
11 #define COMPAT_USER_HZ 100
13 #define COMPAT_UTS_MACHINE "ppc\0\0"
15 #define COMPAT_UTS_MACHINE "ppcle\0\0"
18 typedef u32 compat_size_t
;
19 typedef s32 compat_ssize_t
;
20 typedef s32 compat_time_t
;
21 typedef s32 compat_clock_t
;
22 typedef s32 compat_pid_t
;
23 typedef u32 __compat_uid_t
;
24 typedef u32 __compat_gid_t
;
25 typedef u32 __compat_uid32_t
;
26 typedef u32 __compat_gid32_t
;
27 typedef u32 compat_mode_t
;
28 typedef u32 compat_ino_t
;
29 typedef u32 compat_dev_t
;
30 typedef s32 compat_off_t
;
31 typedef s64 compat_loff_t
;
32 typedef s16 compat_nlink_t
;
33 typedef u16 compat_ipc_pid_t
;
34 typedef s32 compat_daddr_t
;
35 typedef u32 compat_caddr_t
;
36 typedef __kernel_fsid_t compat_fsid_t
;
37 typedef s32 compat_key_t
;
38 typedef s32 compat_timer_t
;
40 typedef s32 compat_int_t
;
41 typedef s32 compat_long_t
;
42 typedef s64 compat_s64
;
43 typedef u32 compat_uint_t
;
44 typedef u32 compat_ulong_t
;
45 typedef u64 compat_u64
;
46 typedef u32 compat_uptr_t
;
48 struct compat_timespec
{
53 struct compat_timeval
{
61 compat_mode_t st_mode
;
62 compat_nlink_t st_nlink
;
63 __compat_uid32_t st_uid
;
64 __compat_gid32_t st_gid
;
67 compat_off_t st_blksize
;
68 compat_off_t st_blocks
;
69 compat_time_t st_atime
;
71 compat_time_t st_mtime
;
73 compat_time_t st_ctime
;
86 #define F_GETLK64 12 /* using 'struct flock64' */
90 struct compat_flock64
{
93 compat_loff_t l_start
;
98 struct compat_statfs
{
106 compat_fsid_t f_fsid
;
107 int f_namelen
; /* SunOS ignores this field. */
113 #define COMPAT_RLIM_INFINITY 0xffffffff
115 typedef u32 compat_old_sigset_t
;
117 #define _COMPAT_NSIG 64
118 #define _COMPAT_NSIG_BPW 32
120 typedef u32 compat_sigset_word
;
122 #define COMPAT_OFF_T_MAX 0x7fffffff
125 * A pointer passed in from user mode. This should not
126 * be used for syscall parameters, just declare them
127 * as pointers because the syscall entry code will have
128 * appropriately converted them already.
131 static inline void __user
*compat_ptr(compat_uptr_t uptr
)
133 return (void __user
*)(unsigned long)uptr
;
136 static inline compat_uptr_t
ptr_to_compat(void __user
*uptr
)
138 return (u32
)(unsigned long)uptr
;
141 static inline void __user
*arch_compat_alloc_user_space(long len
)
143 struct pt_regs
*regs
= current
->thread
.regs
;
144 unsigned long usp
= regs
->gpr
[1];
147 * We can't access below the stack pointer in the 32bit ABI and
148 * can access 288 bytes in the 64bit big-endian ABI,
149 * or 512 bytes with the new ELFv2 little-endian ABI.
151 if (!is_32bit_task())
152 usp
-= USER_REDZONE_SIZE
;
154 return (void __user
*) (usp
- len
);
158 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
159 * it we may as well define it.
161 struct compat_ipc64_perm
{
170 unsigned long __unused1
; /* yes they really are 64bit pads */
171 unsigned long __unused2
;
174 struct compat_semid64_ds
{
175 struct compat_ipc64_perm sem_perm
;
176 unsigned int __unused1
;
177 compat_time_t sem_otime
;
178 unsigned int __unused2
;
179 compat_time_t sem_ctime
;
180 compat_ulong_t sem_nsems
;
181 compat_ulong_t __unused3
;
182 compat_ulong_t __unused4
;
185 struct compat_msqid64_ds
{
186 struct compat_ipc64_perm msg_perm
;
187 unsigned int __unused1
;
188 compat_time_t msg_stime
;
189 unsigned int __unused2
;
190 compat_time_t msg_rtime
;
191 unsigned int __unused3
;
192 compat_time_t msg_ctime
;
193 compat_ulong_t msg_cbytes
;
194 compat_ulong_t msg_qnum
;
195 compat_ulong_t msg_qbytes
;
196 compat_pid_t msg_lspid
;
197 compat_pid_t msg_lrpid
;
198 compat_ulong_t __unused4
;
199 compat_ulong_t __unused5
;
202 struct compat_shmid64_ds
{
203 struct compat_ipc64_perm shm_perm
;
204 unsigned int __unused1
;
205 compat_time_t shm_atime
;
206 unsigned int __unused2
;
207 compat_time_t shm_dtime
;
208 unsigned int __unused3
;
209 compat_time_t shm_ctime
;
210 unsigned int __unused4
;
211 compat_size_t shm_segsz
;
212 compat_pid_t shm_cpid
;
213 compat_pid_t shm_lpid
;
214 compat_ulong_t shm_nattch
;
215 compat_ulong_t __unused5
;
216 compat_ulong_t __unused6
;
219 static inline int is_compat_task(void)
221 return is_32bit_task();
224 #endif /* __KERNEL__ */
225 #endif /* _ASM_POWERPC_COMPAT_H */