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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390X_COMPAT_H
#define _ASM_S390X_COMPAT_H
/*
* Architecture specific compatibility types
*/
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <linux/thread_info.h>
#include <asm/ptrace.h>
#define compat_mode_t compat_mode_t
typedef u16 compat_mode_t;
#define __compat_uid_t __compat_uid_t
typedef u16 __compat_uid_t;
typedef u16 __compat_gid_t;
#define compat_dev_t compat_dev_t
typedef u16 compat_dev_t;
#define compat_ipc_pid_t compat_ipc_pid_t
typedef u16 compat_ipc_pid_t;
#define compat_statfs compat_statfs
#include <asm-generic/compat.h>
#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
typeof(0?(__force t)0:0ULL), u64))
#define __SC_DELOUSE(t,v) ({ \
BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
})
#define PSW32_MASK_USER 0x0000FF00UL
#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
PSW32_ASC_PRIMARY)
#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
typedef u16 compat_nlink_t;
typedef struct {
u32 mask;
u32 addr;
} __aligned(8) psw_compat_t;
typedef struct {
psw_compat_t psw;
u32 gprs[NUM_GPRS];
u32 acrs[NUM_ACRS];
u32 orig_gpr2;
} s390_compat_regs;
typedef struct {
u32 gprs_high[NUM_GPRS];
} s390_compat_regs_high;
struct compat_stat {
compat_dev_t st_dev;
u16 __pad1;
compat_ino_t st_ino;
compat_mode_t st_mode;
compat_nlink_t st_nlink;
__compat_uid_t st_uid;
__compat_gid_t st_gid;
compat_dev_t st_rdev;
u16 __pad2;
u32 st_size;
u32 st_blksize;
u32 st_blocks;
u32 st_atime;
u32 st_atime_nsec;
u32 st_mtime;
u32 st_mtime_nsec;
u32 st_ctime;
u32 st_ctime_nsec;
u32 __unused4;
u32 __unused5;
};
struct compat_statfs {
u32 f_type;
u32 f_bsize;
u32 f_blocks;
u32 f_bfree;
u32 f_bavail;
u32 f_files;
u32 f_ffree;
compat_fsid_t f_fsid;
u32 f_namelen;
u32 f_frsize;
u32 f_flags;
u32 f_spare[4];
};
struct compat_statfs64 {
u32 f_type;
u32 f_bsize;
u64 f_blocks;
u64 f_bfree;
u64 f_bavail;
u64 f_files;
u64 f_ffree;
compat_fsid_t f_fsid;
u32 f_namelen;
u32 f_frsize;
u32 f_flags;
u32 f_spare[4];
};
/*
* A pointer passed in from user mode. This should not
* be used for syscall parameters, just declare them
* as pointers because the syscall entry code will have
* appropriately converted them already.
*/
static inline void __user *compat_ptr(compat_uptr_t uptr)
{
return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
}
#define compat_ptr(uptr) compat_ptr(uptr)
#ifdef CONFIG_COMPAT
static inline int is_compat_task(void)
{
return test_thread_flag(TIF_31BIT);
}
#endif
#endif /* _ASM_S390X_COMPAT_H */
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