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 56typedef u16 __compat_uid_t; 57typedef u16 __compat_gid_t; 58typedef u32 __compat_uid32_t; 59typedef u32 __compat_gid32_t; 60typedef u16 compat_mode_t; 61typedef u16 compat_dev_t; 62typedef u16 compat_nlink_t; 63typedef u16 compat_ipc_pid_t; 64typedef u32 compat_caddr_t; 65typedef __kernel_fsid_t compat_fsid_t; 66typedef s64 compat_s64; 67typedef u64 compat_u64; 68 69typedef struct { 70 u32 mask; 71 u32 addr; 72} __aligned(8) psw_compat_t; 73 74typedef 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 81typedef struct { 82 u32 gprs_high[NUM_GPRS]; 83} s390_compat_regs_high; 84 85struct 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 108struct 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 120struct 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 128struct 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 143struct 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 160typedef u32 compat_old_sigset_t; /* at least 32 bits */ 161 162#define _COMPAT_NSIG 64 163#define _COMPAT_NSIG_BPW 32 164 165typedef 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 176static inline void __user *compat_ptr(compat_uptr_t uptr) 177{ 178 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 179} 180 181static inline compat_uptr_t ptr_to_compat(void __user *uptr) 182{ 183 return (u32)(unsigned long)uptr; 184} 185 186#ifdef CONFIG_COMPAT 187 188static inline int is_compat_task(void) 189{ 190 return test_thread_flag(TIF_31BIT); 191} 192 193static 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 205struct 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 219struct 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 230struct 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 247struct 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