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 typedef union compat_sigval {
123 compat_int_t sival_int;
124 compat_uptr_t sival_ptr;
127 #define SI_PAD_SIZE32 (128/sizeof(int) - 3)
129 typedef struct compat_siginfo {
135 int _pad[SI_PAD_SIZE32];
139 compat_pid_t _pid; /* sender's pid */
140 __compat_uid_t _uid; /* sender's uid */
143 /* POSIX.1b timers */
145 compat_timer_t _tid; /* timer id */
146 int _overrun; /* overrun count */
147 compat_sigval_t _sigval; /* same as below */
148 int _sys_private; /* not to be passed to user */
151 /* POSIX.1b signals */
153 compat_pid_t _pid; /* sender's pid */
154 __compat_uid_t _uid; /* sender's uid */
155 compat_sigval_t _sigval;
160 compat_pid_t _pid; /* which child */
161 __compat_uid_t _uid; /* sender's uid */
162 int _status; /* exit code */
163 compat_clock_t _utime;
164 compat_clock_t _stime;
167 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
169 unsigned int _addr; /* faulting insn/memory ref. */
174 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
180 unsigned int _call_addr; /* calling insn */
181 int _syscall; /* triggering system call number */
182 unsigned int _arch; /* AUDIT_ARCH_* of syscall */
187 #define COMPAT_OFF_T_MAX 0x7fffffff
190 * A pointer passed in from user mode. This should not
191 * be used for syscall parameters, just declare them
192 * as pointers because the syscall entry code will have
193 * appropriately converted them already.
196 static inline void __user *compat_ptr(compat_uptr_t uptr)
198 return (void __user *)(unsigned long)uptr;
201 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
203 return (u32)(unsigned long)uptr;
206 static inline void __user *arch_compat_alloc_user_space(long len)
208 struct pt_regs *regs = current->thread.regs;
209 unsigned long usp = regs->gpr[1];
212 * We can't access below the stack pointer in the 32bit ABI and
213 * can access 288 bytes in the 64bit big-endian ABI,
214 * or 512 bytes with the new ELFv2 little-endian ABI.
216 if (!is_32bit_task())
217 usp -= USER_REDZONE_SIZE;
219 return (void __user *) (usp - len);
223 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
224 * it we may as well define it.
226 struct compat_ipc64_perm {
235 unsigned long __unused1; /* yes they really are 64bit pads */
236 unsigned long __unused2;
239 struct compat_semid64_ds {
240 struct compat_ipc64_perm sem_perm;
241 unsigned int __unused1;
242 compat_time_t sem_otime;
243 unsigned int __unused2;
244 compat_time_t sem_ctime;
245 compat_ulong_t sem_nsems;
246 compat_ulong_t __unused3;
247 compat_ulong_t __unused4;
250 struct compat_msqid64_ds {
251 struct compat_ipc64_perm msg_perm;
252 unsigned int __unused1;
253 compat_time_t msg_stime;
254 unsigned int __unused2;
255 compat_time_t msg_rtime;
256 unsigned int __unused3;
257 compat_time_t msg_ctime;
258 compat_ulong_t msg_cbytes;
259 compat_ulong_t msg_qnum;
260 compat_ulong_t msg_qbytes;
261 compat_pid_t msg_lspid;
262 compat_pid_t msg_lrpid;
263 compat_ulong_t __unused4;
264 compat_ulong_t __unused5;
267 struct compat_shmid64_ds {
268 struct compat_ipc64_perm shm_perm;
269 unsigned int __unused1;
270 compat_time_t shm_atime;
271 unsigned int __unused2;
272 compat_time_t shm_dtime;
273 unsigned int __unused3;
274 compat_time_t shm_ctime;
275 unsigned int __unused4;
276 compat_size_t shm_segsz;
277 compat_pid_t shm_cpid;
278 compat_pid_t shm_lpid;
279 compat_ulong_t shm_nattch;
280 compat_ulong_t __unused5;
281 compat_ulong_t __unused6;
284 static inline int is_compat_task(void)
286 return is_32bit_task();
289 #endif /* __KERNEL__ */
290 #endif /* _ASM_POWERPC_COMPAT_H */