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 #include <asm-generic/compat.h>
13 #define COMPAT_USER_HZ 100
15 #define COMPAT_UTS_MACHINE "ppc\0\0"
17 #define COMPAT_UTS_MACHINE "ppcle\0\0"
20 typedef u32 __compat_uid_t;
21 typedef u32 __compat_gid_t;
22 typedef u32 __compat_uid32_t;
23 typedef u32 __compat_gid32_t;
24 typedef u32 compat_mode_t;
25 typedef u32 compat_dev_t;
26 typedef s16 compat_nlink_t;
27 typedef u16 compat_ipc_pid_t;
28 typedef u32 compat_caddr_t;
29 typedef __kernel_fsid_t compat_fsid_t;
34 compat_mode_t st_mode;
35 compat_nlink_t st_nlink;
36 __compat_uid32_t st_uid;
37 __compat_gid32_t st_gid;
40 compat_off_t st_blksize;
41 compat_off_t st_blocks;
42 old_time32_t st_atime;
44 old_time32_t st_mtime;
46 old_time32_t st_ctime;
59 #define F_GETLK64 12 /* using 'struct flock64' */
63 struct compat_flock64 {
66 compat_loff_t l_start;
71 struct compat_statfs {
80 int f_namelen; /* SunOS ignores this field. */
86 #define COMPAT_RLIM_INFINITY 0xffffffff
88 typedef u32 compat_old_sigset_t;
90 #define _COMPAT_NSIG 64
91 #define _COMPAT_NSIG_BPW 32
93 typedef u32 compat_sigset_word;
95 #define COMPAT_OFF_T_MAX 0x7fffffff
97 static inline void __user *arch_compat_alloc_user_space(long len)
99 struct pt_regs *regs = current->thread.regs;
100 unsigned long usp = regs->gpr[1];
103 * We can't access below the stack pointer in the 32bit ABI and
104 * can access 288 bytes in the 64bit big-endian ABI,
105 * or 512 bytes with the new ELFv2 little-endian ABI.
107 if (!is_32bit_task())
108 usp -= USER_REDZONE_SIZE;
110 return (void __user *) (usp - len);
114 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
115 * it we may as well define it.
117 struct compat_ipc64_perm {
126 unsigned long __unused1; /* yes they really are 64bit pads */
127 unsigned long __unused2;
130 struct compat_semid64_ds {
131 struct compat_ipc64_perm sem_perm;
132 unsigned int sem_otime_high;
133 unsigned int sem_otime;
134 unsigned int sem_ctime_high;
135 unsigned int sem_ctime;
136 compat_ulong_t sem_nsems;
137 compat_ulong_t __unused3;
138 compat_ulong_t __unused4;
141 struct compat_msqid64_ds {
142 struct compat_ipc64_perm msg_perm;
143 unsigned int msg_stime_high;
144 unsigned int msg_stime;
145 unsigned int msg_rtime_high;
146 unsigned int msg_rtime;
147 unsigned int msg_ctime_high;
148 unsigned int msg_ctime;
149 compat_ulong_t msg_cbytes;
150 compat_ulong_t msg_qnum;
151 compat_ulong_t msg_qbytes;
152 compat_pid_t msg_lspid;
153 compat_pid_t msg_lrpid;
154 compat_ulong_t __unused4;
155 compat_ulong_t __unused5;
158 struct compat_shmid64_ds {
159 struct compat_ipc64_perm shm_perm;
160 unsigned int shm_atime_high;
161 unsigned int shm_atime;
162 unsigned int shm_dtime_high;
163 unsigned int shm_dtime;
164 unsigned int shm_ctime_high;
165 unsigned int shm_ctime;
166 unsigned int __unused4;
167 compat_size_t shm_segsz;
168 compat_pid_t shm_cpid;
169 compat_pid_t shm_lpid;
170 compat_ulong_t shm_nattch;
171 compat_ulong_t __unused5;
172 compat_ulong_t __unused6;
175 static inline int is_compat_task(void)
177 return is_32bit_task();
180 #endif /* __KERNEL__ */
181 #endif /* _ASM_POWERPC_COMPAT_H */