1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_POWERPC_COMPAT_H 3#define _ASM_POWERPC_COMPAT_H 4#ifdef __KERNEL__ 5/* 6 * Architecture specific compatibility types 7 */ 8#include <linux/types.h> 9#include <linux/sched.h> 10 11#define COMPAT_USER_HZ 100 12#ifdef __BIG_ENDIAN__ 13#define COMPAT_UTS_MACHINE "ppc\0\0" 14#else 15#define COMPAT_UTS_MACHINE "ppcle\0\0" 16#endif 17 18typedef u32 compat_size_t; 19typedef s32 compat_ssize_t; 20typedef s32 compat_time_t; 21typedef s32 compat_clock_t; 22typedef s32 compat_pid_t; 23typedef u32 __compat_uid_t; 24typedef u32 __compat_gid_t; 25typedef u32 __compat_uid32_t; 26typedef u32 __compat_gid32_t; 27typedef u32 compat_mode_t; 28typedef u32 compat_ino_t; 29typedef u32 compat_dev_t; 30typedef s32 compat_off_t; 31typedef s64 compat_loff_t; 32typedef s16 compat_nlink_t; 33typedef u16 compat_ipc_pid_t; 34typedef s32 compat_daddr_t; 35typedef u32 compat_caddr_t; 36typedef __kernel_fsid_t compat_fsid_t; 37typedef s32 compat_key_t; 38typedef s32 compat_timer_t; 39 40typedef s32 compat_int_t; 41typedef s32 compat_long_t; 42typedef s64 compat_s64; 43typedef u32 compat_uint_t; 44typedef u32 compat_ulong_t; 45typedef u64 compat_u64; 46typedef u32 compat_uptr_t; 47 48struct compat_timespec { 49 compat_time_t tv_sec; 50 s32 tv_nsec; 51}; 52 53struct compat_timeval { 54 compat_time_t tv_sec; 55 s32 tv_usec; 56}; 57 58struct compat_stat { 59 compat_dev_t st_dev; 60 compat_ino_t st_ino; 61 compat_mode_t st_mode; 62 compat_nlink_t st_nlink; 63 __compat_uid32_t st_uid; 64 __compat_gid32_t st_gid; 65 compat_dev_t st_rdev; 66 compat_off_t st_size; 67 compat_off_t st_blksize; 68 compat_off_t st_blocks; 69 compat_time_t st_atime; 70 u32 st_atime_nsec; 71 compat_time_t st_mtime; 72 u32 st_mtime_nsec; 73 compat_time_t st_ctime; 74 u32 st_ctime_nsec; 75 u32 __unused4[2]; 76}; 77 78struct compat_flock { 79 short l_type; 80 short l_whence; 81 compat_off_t l_start; 82 compat_off_t l_len; 83 compat_pid_t l_pid; 84}; 85 86#define F_GETLK64 12 /* using 'struct flock64' */ 87#define F_SETLK64 13 88#define F_SETLKW64 14 89 90struct compat_flock64 { 91 short l_type; 92 short l_whence; 93 compat_loff_t l_start; 94 compat_loff_t l_len; 95 compat_pid_t l_pid; 96}; 97 98struct compat_statfs { 99 int f_type; 100 int f_bsize; 101 int f_blocks; 102 int f_bfree; 103 int f_bavail; 104 int f_files; 105 int f_ffree; 106 compat_fsid_t f_fsid; 107 int f_namelen; /* SunOS ignores this field. */ 108 int f_frsize; 109 int f_flags; 110 int f_spare[4]; 111}; 112 113#define COMPAT_RLIM_INFINITY 0xffffffff 114 115typedef u32 compat_old_sigset_t; 116 117#define _COMPAT_NSIG 64 118#define _COMPAT_NSIG_BPW 32 119 120typedef u32 compat_sigset_word; 121 122#define COMPAT_OFF_T_MAX 0x7fffffff 123 124/* 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. 129 */ 130 131static inline void __user *compat_ptr(compat_uptr_t uptr) 132{ 133 return (void __user *)(unsigned long)uptr; 134} 135 136static inline compat_uptr_t ptr_to_compat(void __user *uptr) 137{ 138 return (u32)(unsigned long)uptr; 139} 140 141static inline void __user *arch_compat_alloc_user_space(long len) 142{ 143 struct pt_regs *regs = current->thread.regs; 144 unsigned long usp = regs->gpr[1]; 145 146 /* 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. 150 */ 151 if (!is_32bit_task()) 152 usp -= USER_REDZONE_SIZE; 153 154 return (void __user *) (usp - len); 155} 156 157/* 158 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to 159 * it we may as well define it. 160 */ 161struct compat_ipc64_perm { 162 compat_key_t key; 163 __compat_uid_t uid; 164 __compat_gid_t gid; 165 __compat_uid_t cuid; 166 __compat_gid_t cgid; 167 compat_mode_t mode; 168 unsigned int seq; 169 unsigned int __pad2; 170 unsigned long __unused1; /* yes they really are 64bit pads */ 171 unsigned long __unused2; 172}; 173 174struct 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; 183}; 184 185struct 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; 200}; 201 202struct 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; 217}; 218 219static inline int is_compat_task(void) 220{ 221 return is_32bit_task(); 222} 223 224#endif /* __KERNEL__ */ 225#endif /* _ASM_POWERPC_COMPAT_H */ 226