141 lines
2.8 KiB
C
141 lines
2.8 KiB
C
/* 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/ptrace.h>
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#define compat_mode_t compat_mode_t
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typedef u16 compat_mode_t;
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#define __compat_uid_t __compat_uid_t
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typedef u16 __compat_uid_t;
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typedef u16 __compat_gid_t;
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#define compat_dev_t compat_dev_t
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typedef u16 compat_dev_t;
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#define compat_ipc_pid_t compat_ipc_pid_t
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typedef u16 compat_ipc_pid_t;
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#define compat_statfs compat_statfs
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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_USER 0x0000FF00UL
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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_UTS_MACHINE "s390\0\0\0\0"
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typedef u16 compat_nlink_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_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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/*
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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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#endif
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#endif /* _ASM_S390X_COMPAT_H */
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