1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_S390X_COMPAT_H 3 #define _ASM_S390X_COMPAT_H 4 /* 5 * Architecture specific compatibility types 6 */ 7 #include <linux/types.h> 8 #include <linux/sched.h> 9 #include <linux/sched/task_stack.h> 10 #include <linux/thread_info.h> 11 12 #include <asm-generic/compat.h> 13 14 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \ 15 typeof(0?(__force t)0:0ULL), u64)) 16 17 #define __SC_DELOUSE(t,v) ({ \ 18 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \ 19 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \ 20 }) 21 22 #define PSW32_MASK_PER 0x40000000UL 23 #define PSW32_MASK_DAT 0x04000000UL 24 #define PSW32_MASK_IO 0x02000000UL 25 #define PSW32_MASK_EXT 0x01000000UL 26 #define PSW32_MASK_KEY 0x00F00000UL 27 #define PSW32_MASK_BASE 0x00080000UL /* Always one */ 28 #define PSW32_MASK_MCHECK 0x00040000UL 29 #define PSW32_MASK_WAIT 0x00020000UL 30 #define PSW32_MASK_PSTATE 0x00010000UL 31 #define PSW32_MASK_ASC 0x0000C000UL 32 #define PSW32_MASK_CC 0x00003000UL 33 #define PSW32_MASK_PM 0x00000f00UL 34 #define PSW32_MASK_RI 0x00000080UL 35 36 #define PSW32_MASK_USER 0x0000FF00UL 37 38 #define PSW32_ADDR_AMODE 0x80000000UL 39 #define PSW32_ADDR_INSN 0x7FFFFFFFUL 40 41 #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20) 42 43 #define PSW32_ASC_PRIMARY 0x00000000UL 44 #define PSW32_ASC_ACCREG 0x00004000UL 45 #define PSW32_ASC_SECONDARY 0x00008000UL 46 #define PSW32_ASC_HOME 0x0000C000UL 47 48 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \ 49 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \ 50 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \ 51 PSW32_ASC_PRIMARY) 52 53 #define COMPAT_USER_HZ 100 54 #define COMPAT_UTS_MACHINE "s390\0\0\0\0" 55 56 typedef u16 __compat_uid_t; 57 typedef u16 __compat_gid_t; 58 typedef u32 __compat_uid32_t; 59 typedef u32 __compat_gid32_t; 60 typedef u16 compat_mode_t; 61 typedef u16 compat_dev_t; 62 typedef u16 compat_nlink_t; 63 typedef u16 compat_ipc_pid_t; 64 typedef u32 compat_caddr_t; 65 typedef __kernel_fsid_t compat_fsid_t; 66 typedef s64 compat_s64; 67 typedef u64 compat_u64; 68 69 typedef struct { 70 u32 mask; 71 u32 addr; 72 } __aligned(8) psw_compat_t; 73 74 typedef struct { 75 psw_compat_t psw; 76 u32 gprs[NUM_GPRS]; 77 u32 acrs[NUM_ACRS]; 78 u32 orig_gpr2; 79 } s390_compat_regs; 80 81 typedef struct { 82 u32 gprs_high[NUM_GPRS]; 83 } s390_compat_regs_high; 84 85 struct compat_stat { 86 compat_dev_t st_dev; 87 u16 __pad1; 88 compat_ino_t st_ino; 89 compat_mode_t st_mode; 90 compat_nlink_t st_nlink; 91 __compat_uid_t st_uid; 92 __compat_gid_t st_gid; 93 compat_dev_t st_rdev; 94 u16 __pad2; 95 u32 st_size; 96 u32 st_blksize; 97 u32 st_blocks; 98 u32 st_atime; 99 u32 st_atime_nsec; 100 u32 st_mtime; 101 u32 st_mtime_nsec; 102 u32 st_ctime; 103 u32 st_ctime_nsec; 104 u32 __unused4; 105 u32 __unused5; 106 }; 107 108 struct compat_flock { 109 short l_type; 110 short l_whence; 111 compat_off_t l_start; 112 compat_off_t l_len; 113 compat_pid_t l_pid; 114 }; 115 116 #define F_GETLK64 12 117 #define F_SETLK64 13 118 #define F_SETLKW64 14 119 120 struct compat_flock64 { 121 short l_type; 122 short l_whence; 123 compat_loff_t l_start; 124 compat_loff_t l_len; 125 compat_pid_t l_pid; 126 }; 127 128 struct compat_statfs { 129 u32 f_type; 130 u32 f_bsize; 131 u32 f_blocks; 132 u32 f_bfree; 133 u32 f_bavail; 134 u32 f_files; 135 u32 f_ffree; 136 compat_fsid_t f_fsid; 137 u32 f_namelen; 138 u32 f_frsize; 139 u32 f_flags; 140 u32 f_spare[4]; 141 }; 142 143 struct compat_statfs64 { 144 u32 f_type; 145 u32 f_bsize; 146 u64 f_blocks; 147 u64 f_bfree; 148 u64 f_bavail; 149 u64 f_files; 150 u64 f_ffree; 151 compat_fsid_t f_fsid; 152 u32 f_namelen; 153 u32 f_frsize; 154 u32 f_flags; 155 u32 f_spare[4]; 156 }; 157 158 #define COMPAT_RLIM_INFINITY 0xffffffff 159 160 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 161 162 #define _COMPAT_NSIG 64 163 #define _COMPAT_NSIG_BPW 32 164 165 typedef u32 compat_sigset_word; 166 167 #define COMPAT_OFF_T_MAX 0x7fffffff 168 169 /* 170 * A pointer passed in from user mode. This should not 171 * be used for syscall parameters, just declare them 172 * as pointers because the syscall entry code will have 173 * appropriately converted them already. 174 */ 175 176 static inline void __user *compat_ptr(compat_uptr_t uptr) 177 { 178 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 179 } 180 181 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 182 { 183 return (u32)(unsigned long)uptr; 184 } 185 186 #ifdef CONFIG_COMPAT 187 188 static inline int is_compat_task(void) 189 { 190 return test_thread_flag(TIF_31BIT); 191 } 192 193 static inline void __user *arch_compat_alloc_user_space(long len) 194 { 195 unsigned long stack; 196 197 stack = KSTK_ESP(current); 198 if (is_compat_task()) 199 stack &= 0x7fffffffUL; 200 return (void __user *) (stack - len); 201 } 202 203 #endif 204 205 struct compat_ipc64_perm { 206 compat_key_t key; 207 __compat_uid32_t uid; 208 __compat_gid32_t gid; 209 __compat_uid32_t cuid; 210 __compat_gid32_t cgid; 211 compat_mode_t mode; 212 unsigned short __pad1; 213 unsigned short seq; 214 unsigned short __pad2; 215 unsigned int __unused1; 216 unsigned int __unused2; 217 }; 218 219 struct compat_semid64_ds { 220 struct compat_ipc64_perm sem_perm; 221 compat_ulong_t sem_otime; 222 compat_ulong_t sem_otime_high; 223 compat_ulong_t sem_ctime; 224 compat_ulong_t sem_ctime_high; 225 compat_ulong_t sem_nsems; 226 compat_ulong_t __unused1; 227 compat_ulong_t __unused2; 228 }; 229 230 struct compat_msqid64_ds { 231 struct compat_ipc64_perm msg_perm; 232 compat_ulong_t msg_stime; 233 compat_ulong_t msg_stime_high; 234 compat_ulong_t msg_rtime; 235 compat_ulong_t msg_rtime_high; 236 compat_ulong_t msg_ctime; 237 compat_ulong_t msg_ctime_high; 238 compat_ulong_t msg_cbytes; 239 compat_ulong_t msg_qnum; 240 compat_ulong_t msg_qbytes; 241 compat_pid_t msg_lspid; 242 compat_pid_t msg_lrpid; 243 compat_ulong_t __unused1; 244 compat_ulong_t __unused2; 245 }; 246 247 struct compat_shmid64_ds { 248 struct compat_ipc64_perm shm_perm; 249 compat_size_t shm_segsz; 250 compat_ulong_t shm_atime; 251 compat_ulong_t shm_atime_high; 252 compat_ulong_t shm_dtime; 253 compat_ulong_t shm_dtime_high; 254 compat_ulong_t shm_ctime; 255 compat_ulong_t shm_ctime_high; 256 compat_pid_t shm_cpid; 257 compat_pid_t shm_lpid; 258 compat_ulong_t shm_nattch; 259 compat_ulong_t __unused1; 260 compat_ulong_t __unused2; 261 }; 262 #endif /* _ASM_S390X_COMPAT_H */ 263