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 67 typedef struct { 68 u32 mask; 69 u32 addr; 70 } __aligned(8) psw_compat_t; 71 72 typedef struct { 73 psw_compat_t psw; 74 u32 gprs[NUM_GPRS]; 75 u32 acrs[NUM_ACRS]; 76 u32 orig_gpr2; 77 } s390_compat_regs; 78 79 typedef struct { 80 u32 gprs_high[NUM_GPRS]; 81 } s390_compat_regs_high; 82 83 struct compat_stat { 84 compat_dev_t st_dev; 85 u16 __pad1; 86 compat_ino_t st_ino; 87 compat_mode_t st_mode; 88 compat_nlink_t st_nlink; 89 __compat_uid_t st_uid; 90 __compat_gid_t st_gid; 91 compat_dev_t st_rdev; 92 u16 __pad2; 93 u32 st_size; 94 u32 st_blksize; 95 u32 st_blocks; 96 u32 st_atime; 97 u32 st_atime_nsec; 98 u32 st_mtime; 99 u32 st_mtime_nsec; 100 u32 st_ctime; 101 u32 st_ctime_nsec; 102 u32 __unused4; 103 u32 __unused5; 104 }; 105 106 struct compat_flock { 107 short l_type; 108 short l_whence; 109 compat_off_t l_start; 110 compat_off_t l_len; 111 compat_pid_t l_pid; 112 }; 113 114 #define F_GETLK64 12 115 #define F_SETLK64 13 116 #define F_SETLKW64 14 117 118 struct compat_flock64 { 119 short l_type; 120 short l_whence; 121 compat_loff_t l_start; 122 compat_loff_t l_len; 123 compat_pid_t l_pid; 124 }; 125 126 struct compat_statfs { 127 u32 f_type; 128 u32 f_bsize; 129 u32 f_blocks; 130 u32 f_bfree; 131 u32 f_bavail; 132 u32 f_files; 133 u32 f_ffree; 134 compat_fsid_t f_fsid; 135 u32 f_namelen; 136 u32 f_frsize; 137 u32 f_flags; 138 u32 f_spare[4]; 139 }; 140 141 struct compat_statfs64 { 142 u32 f_type; 143 u32 f_bsize; 144 u64 f_blocks; 145 u64 f_bfree; 146 u64 f_bavail; 147 u64 f_files; 148 u64 f_ffree; 149 compat_fsid_t f_fsid; 150 u32 f_namelen; 151 u32 f_frsize; 152 u32 f_flags; 153 u32 f_spare[4]; 154 }; 155 156 #define COMPAT_RLIM_INFINITY 0xffffffff 157 158 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 159 160 #define _COMPAT_NSIG 64 161 #define _COMPAT_NSIG_BPW 32 162 163 typedef u32 compat_sigset_word; 164 165 #define COMPAT_OFF_T_MAX 0x7fffffff 166 167 /* 168 * A pointer passed in from user mode. This should not 169 * be used for syscall parameters, just declare them 170 * as pointers because the syscall entry code will have 171 * appropriately converted them already. 172 */ 173 compat_ptr(compat_uptr_t uptr)174static inline void __user *compat_ptr(compat_uptr_t uptr) 175 { 176 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 177 } 178 #define compat_ptr(uptr) compat_ptr(uptr) 179 180 #ifdef CONFIG_COMPAT 181 is_compat_task(void)182static inline int is_compat_task(void) 183 { 184 return test_thread_flag(TIF_31BIT); 185 } 186 arch_compat_alloc_user_space(long len)187static inline void __user *arch_compat_alloc_user_space(long len) 188 { 189 unsigned long stack; 190 191 stack = KSTK_ESP(current); 192 if (is_compat_task()) 193 stack &= 0x7fffffffUL; 194 return (void __user *) (stack - len); 195 } 196 197 #endif 198 199 struct compat_ipc64_perm { 200 compat_key_t key; 201 __compat_uid32_t uid; 202 __compat_gid32_t gid; 203 __compat_uid32_t cuid; 204 __compat_gid32_t cgid; 205 compat_mode_t mode; 206 unsigned short __pad1; 207 unsigned short seq; 208 unsigned short __pad2; 209 unsigned int __unused1; 210 unsigned int __unused2; 211 }; 212 213 struct compat_semid64_ds { 214 struct compat_ipc64_perm sem_perm; 215 compat_ulong_t sem_otime; 216 compat_ulong_t sem_otime_high; 217 compat_ulong_t sem_ctime; 218 compat_ulong_t sem_ctime_high; 219 compat_ulong_t sem_nsems; 220 compat_ulong_t __unused1; 221 compat_ulong_t __unused2; 222 }; 223 224 struct compat_msqid64_ds { 225 struct compat_ipc64_perm msg_perm; 226 compat_ulong_t msg_stime; 227 compat_ulong_t msg_stime_high; 228 compat_ulong_t msg_rtime; 229 compat_ulong_t msg_rtime_high; 230 compat_ulong_t msg_ctime; 231 compat_ulong_t msg_ctime_high; 232 compat_ulong_t msg_cbytes; 233 compat_ulong_t msg_qnum; 234 compat_ulong_t msg_qbytes; 235 compat_pid_t msg_lspid; 236 compat_pid_t msg_lrpid; 237 compat_ulong_t __unused1; 238 compat_ulong_t __unused2; 239 }; 240 241 struct compat_shmid64_ds { 242 struct compat_ipc64_perm shm_perm; 243 compat_size_t shm_segsz; 244 compat_ulong_t shm_atime; 245 compat_ulong_t shm_atime_high; 246 compat_ulong_t shm_dtime; 247 compat_ulong_t shm_dtime_high; 248 compat_ulong_t shm_ctime; 249 compat_ulong_t shm_ctime_high; 250 compat_pid_t shm_cpid; 251 compat_pid_t shm_lpid; 252 compat_ulong_t shm_nattch; 253 compat_ulong_t __unused1; 254 compat_ulong_t __unused2; 255 }; 256 #endif /* _ASM_S390X_COMPAT_H */ 257