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_clock_t;
21 typedef s32 compat_pid_t;
22 typedef u32 __compat_uid_t;
23 typedef u32 __compat_gid_t;
24 typedef u32 __compat_uid32_t;
25 typedef u32 __compat_gid32_t;
26 typedef u32 compat_mode_t;
27 typedef u32 compat_ino_t;
28 typedef u32 compat_dev_t;
29 typedef s32 compat_off_t;
30 typedef s64 compat_loff_t;
31 typedef s16 compat_nlink_t;
32 typedef u16 compat_ipc_pid_t;
33 typedef s32 compat_daddr_t;
34 typedef u32 compat_caddr_t;
35 typedef __kernel_fsid_t compat_fsid_t;
36 typedef s32 compat_key_t;
37 typedef s32 compat_timer_t;
39 typedef s32 compat_int_t;
40 typedef s32 compat_long_t;
41 typedef s64 compat_s64;
42 typedef u32 compat_uint_t;
43 typedef u32 compat_ulong_t;
44 typedef u64 compat_u64;
45 typedef u32 compat_uptr_t;
50 compat_mode_t st_mode;
51 compat_nlink_t st_nlink;
52 __compat_uid32_t st_uid;
53 __compat_gid32_t st_gid;
56 compat_off_t st_blksize;
57 compat_off_t st_blocks;
58 compat_time_t st_atime;
60 compat_time_t st_mtime;
62 compat_time_t st_ctime;
75 #define F_GETLK64 12 /* using 'struct flock64' */
79 struct compat_flock64 {
82 compat_loff_t l_start;
87 struct compat_statfs {
96 int f_namelen; /* SunOS ignores this field. */
102 #define COMPAT_RLIM_INFINITY 0xffffffff
104 typedef u32 compat_old_sigset_t;
106 #define _COMPAT_NSIG 64
107 #define _COMPAT_NSIG_BPW 32
109 typedef u32 compat_sigset_word;
111 #define COMPAT_OFF_T_MAX 0x7fffffff
114 * A pointer passed in from user mode. This should not
115 * be used for syscall parameters, just declare them
116 * as pointers because the syscall entry code will have
117 * appropriately converted them already.
120 static inline void __user *compat_ptr(compat_uptr_t uptr)
122 return (void __user *)(unsigned long)uptr;
125 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
127 return (u32)(unsigned long)uptr;
130 static inline void __user *arch_compat_alloc_user_space(long len)
132 struct pt_regs *regs = current->thread.regs;
133 unsigned long usp = regs->gpr[1];
136 * We can't access below the stack pointer in the 32bit ABI and
137 * can access 288 bytes in the 64bit big-endian ABI,
138 * or 512 bytes with the new ELFv2 little-endian ABI.
140 if (!is_32bit_task())
141 usp -= USER_REDZONE_SIZE;
143 return (void __user *) (usp - len);
147 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
148 * it we may as well define it.
150 struct compat_ipc64_perm {
159 unsigned long __unused1; /* yes they really are 64bit pads */
160 unsigned long __unused2;
163 struct compat_semid64_ds {
164 struct compat_ipc64_perm sem_perm;
165 unsigned int sem_otime_high;
166 unsigned int sem_otime;
167 unsigned int sem_ctime_high;
168 unsigned int sem_ctime;
169 compat_ulong_t sem_nsems;
170 compat_ulong_t __unused3;
171 compat_ulong_t __unused4;
174 struct compat_msqid64_ds {
175 struct compat_ipc64_perm msg_perm;
176 unsigned int msg_stime_high;
177 unsigned int msg_stime;
178 unsigned int msg_rtime_high;
179 unsigned int msg_rtime;
180 unsigned int msg_ctime_high;
181 unsigned int msg_ctime;
182 compat_ulong_t msg_cbytes;
183 compat_ulong_t msg_qnum;
184 compat_ulong_t msg_qbytes;
185 compat_pid_t msg_lspid;
186 compat_pid_t msg_lrpid;
187 compat_ulong_t __unused4;
188 compat_ulong_t __unused5;
191 struct compat_shmid64_ds {
192 struct compat_ipc64_perm shm_perm;
193 unsigned int shm_atime_high;
194 unsigned int shm_atime;
195 unsigned int shm_dtime_high;
196 unsigned int shm_dtime;
197 unsigned int shm_ctime_high;
198 unsigned int shm_ctime;
199 unsigned int __unused4;
200 compat_size_t shm_segsz;
201 compat_pid_t shm_cpid;
202 compat_pid_t shm_lpid;
203 compat_ulong_t shm_nattch;
204 compat_ulong_t __unused5;
205 compat_ulong_t __unused6;
208 static inline int is_compat_task(void)
210 return is_32bit_task();
213 #endif /* __KERNEL__ */
214 #endif /* _ASM_POWERPC_COMPAT_H */