/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390X_COMPAT_H
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#define _ASM_S390X_COMPAT_H
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/*
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* Architecture specific compatibility types
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*/
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/sched/task_stack.h>
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#include <linux/thread_info.h>
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#include <asm-generic/compat.h>
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#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
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typeof(0?(__force t)0:0ULL), u64))
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#define __SC_DELOUSE(t,v) ({ \
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BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
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(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
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})
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#define PSW32_MASK_PER 0x40000000UL
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#define PSW32_MASK_DAT 0x04000000UL
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#define PSW32_MASK_IO 0x02000000UL
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#define PSW32_MASK_EXT 0x01000000UL
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#define PSW32_MASK_KEY 0x00F00000UL
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#define PSW32_MASK_BASE 0x00080000UL /* Always one */
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#define PSW32_MASK_MCHECK 0x00040000UL
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#define PSW32_MASK_WAIT 0x00020000UL
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#define PSW32_MASK_PSTATE 0x00010000UL
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#define PSW32_MASK_ASC 0x0000C000UL
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#define PSW32_MASK_CC 0x00003000UL
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#define PSW32_MASK_PM 0x00000f00UL
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#define PSW32_MASK_RI 0x00000080UL
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#define PSW32_MASK_USER 0x0000FF00UL
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#define PSW32_ADDR_AMODE 0x80000000UL
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#define PSW32_ADDR_INSN 0x7FFFFFFFUL
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#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
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#define PSW32_ASC_PRIMARY 0x00000000UL
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#define PSW32_ASC_ACCREG 0x00004000UL
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#define PSW32_ASC_SECONDARY 0x00008000UL
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#define PSW32_ASC_HOME 0x0000C000UL
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#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
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PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
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PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
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PSW32_ASC_PRIMARY)
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#define COMPAT_USER_HZ 100
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#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
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typedef u16 __compat_uid_t;
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typedef u16 __compat_gid_t;
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typedef u32 __compat_uid32_t;
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typedef u32 __compat_gid32_t;
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typedef u16 compat_mode_t;
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typedef u16 compat_dev_t;
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typedef u16 compat_nlink_t;
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typedef u16 compat_ipc_pid_t;
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typedef u32 compat_caddr_t;
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typedef __kernel_fsid_t compat_fsid_t;
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typedef struct {
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u32 mask;
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u32 addr;
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} __aligned(8) psw_compat_t;
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typedef struct {
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psw_compat_t psw;
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u32 gprs[NUM_GPRS];
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u32 acrs[NUM_ACRS];
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u32 orig_gpr2;
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} s390_compat_regs;
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typedef struct {
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u32 gprs_high[NUM_GPRS];
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} s390_compat_regs_high;
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struct compat_stat {
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compat_dev_t st_dev;
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u16 __pad1;
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compat_ino_t st_ino;
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compat_mode_t st_mode;
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compat_nlink_t st_nlink;
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__compat_uid_t st_uid;
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__compat_gid_t st_gid;
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compat_dev_t st_rdev;
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u16 __pad2;
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u32 st_size;
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u32 st_blksize;
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u32 st_blocks;
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u32 st_atime;
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u32 st_atime_nsec;
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u32 st_mtime;
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u32 st_mtime_nsec;
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u32 st_ctime;
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u32 st_ctime_nsec;
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u32 __unused4;
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u32 __unused5;
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};
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struct compat_flock {
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short l_type;
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short l_whence;
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compat_off_t l_start;
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compat_off_t l_len;
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compat_pid_t l_pid;
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};
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#define F_GETLK64 12
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#define F_SETLK64 13
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#define F_SETLKW64 14
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struct compat_flock64 {
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short l_type;
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short l_whence;
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compat_loff_t l_start;
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compat_loff_t l_len;
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compat_pid_t l_pid;
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};
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struct compat_statfs {
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u32 f_type;
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u32 f_bsize;
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u32 f_blocks;
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u32 f_bfree;
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u32 f_bavail;
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u32 f_files;
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u32 f_ffree;
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compat_fsid_t f_fsid;
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u32 f_namelen;
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u32 f_frsize;
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u32 f_flags;
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u32 f_spare[4];
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};
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struct compat_statfs64 {
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u32 f_type;
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u32 f_bsize;
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u64 f_blocks;
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u64 f_bfree;
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u64 f_bavail;
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u64 f_files;
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u64 f_ffree;
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compat_fsid_t f_fsid;
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u32 f_namelen;
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u32 f_frsize;
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u32 f_flags;
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u32 f_spare[4];
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};
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#define COMPAT_RLIM_INFINITY 0xffffffff
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typedef u32 compat_old_sigset_t; /* at least 32 bits */
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#define _COMPAT_NSIG 64
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#define _COMPAT_NSIG_BPW 32
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typedef u32 compat_sigset_word;
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#define COMPAT_OFF_T_MAX 0x7fffffff
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/*
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* A pointer passed in from user mode. This should not
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* be used for syscall parameters, just declare them
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* as pointers because the syscall entry code will have
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* appropriately converted them already.
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*/
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static inline void __user *compat_ptr(compat_uptr_t uptr)
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{
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return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
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}
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#define compat_ptr(uptr) compat_ptr(uptr)
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#ifdef CONFIG_COMPAT
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static inline int is_compat_task(void)
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{
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return test_thread_flag(TIF_31BIT);
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}
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static inline void __user *arch_compat_alloc_user_space(long len)
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{
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unsigned long stack;
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stack = KSTK_ESP(current);
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if (is_compat_task())
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stack &= 0x7fffffffUL;
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return (void __user *) (stack - len);
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}
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#endif
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struct compat_ipc64_perm {
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compat_key_t key;
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__compat_uid32_t uid;
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__compat_gid32_t gid;
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__compat_uid32_t cuid;
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__compat_gid32_t cgid;
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compat_mode_t mode;
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unsigned short __pad1;
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unsigned short seq;
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unsigned short __pad2;
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unsigned int __unused1;
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unsigned int __unused2;
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};
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struct compat_semid64_ds {
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struct compat_ipc64_perm sem_perm;
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compat_ulong_t sem_otime;
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compat_ulong_t sem_otime_high;
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compat_ulong_t sem_ctime;
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compat_ulong_t sem_ctime_high;
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compat_ulong_t sem_nsems;
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compat_ulong_t __unused1;
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compat_ulong_t __unused2;
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};
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struct compat_msqid64_ds {
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struct compat_ipc64_perm msg_perm;
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compat_ulong_t msg_stime;
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compat_ulong_t msg_stime_high;
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compat_ulong_t msg_rtime;
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compat_ulong_t msg_rtime_high;
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compat_ulong_t msg_ctime;
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compat_ulong_t msg_ctime_high;
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compat_ulong_t msg_cbytes;
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compat_ulong_t msg_qnum;
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compat_ulong_t msg_qbytes;
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compat_pid_t msg_lspid;
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compat_pid_t msg_lrpid;
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compat_ulong_t __unused1;
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compat_ulong_t __unused2;
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};
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struct compat_shmid64_ds {
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struct compat_ipc64_perm shm_perm;
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compat_size_t shm_segsz;
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compat_ulong_t shm_atime;
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compat_ulong_t shm_atime_high;
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compat_ulong_t shm_dtime;
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compat_ulong_t shm_dtime_high;
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compat_ulong_t shm_ctime;
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compat_ulong_t shm_ctime_high;
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compat_pid_t shm_cpid;
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compat_pid_t shm_lpid;
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compat_ulong_t shm_nattch;
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compat_ulong_t __unused1;
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compat_ulong_t __unused2;
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};
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#endif /* _ASM_S390X_COMPAT_H */
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