/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_COMPAT_H
#define _ASM_COMPAT_H
/*
 * Architecture specific compatibility types
 */
#include <linux/thread_info.h>
#include <linux/types.h>
#include <asm/page.h>
#include <asm/ptrace.h>

#define __compat_uid_t  __compat_uid_t
typedef s32             __compat_uid_t;
typedef s32             __compat_gid_t;

typedef __compat_uid_t  __compat_uid32_t;
typedef __compat_gid_t  __compat_gid32_t;
#define __compat_uid32_t __compat_uid32_t

#define compat_statfs           compat_statfs
#define compat_ipc64_perm       compat_ipc64_perm

#define _COMPAT_NSIG            128             /* Don't ask !$@#% ...  */
#define _COMPAT_NSIG_BPW        32
typedef u32             compat_sigset_word;

#define COMPAT_RLIM_INFINITY    0x7fffffffUL

#include <asm-generic/compat.h>

#define COMPAT_UTS_MACHINE      "mips\0\0\0"

typedef u32             compat_nlink_t;

struct compat_stat {
        compat_dev_t    st_dev;
        s32             st_pad1[3];
        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;
        s32             st_pad2[2];
        compat_off_t    st_size;
        s32             st_pad3;
        old_time32_t    st_atime;
        s32             st_atime_nsec;
        old_time32_t    st_mtime;
        s32             st_mtime_nsec;
        old_time32_t    st_ctime;
        s32             st_ctime_nsec;
        s32             st_blksize;
        s32             st_blocks;
        s32             st_pad4[14];
};

#define __ARCH_COMPAT_FLOCK_EXTRA_SYSID         s32 l_sysid;
#define __ARCH_COMPAT_FLOCK_PAD                 s32 pad[4];

struct compat_statfs {
        int             f_type;
        int             f_bsize;
        int             f_frsize;
        int             f_blocks;
        int             f_bfree;
        int             f_files;
        int             f_ffree;
        int             f_bavail;
        compat_fsid_t   f_fsid;
        int             f_namelen;
        int             f_flags;
        int             f_spare[5];
};

struct compat_ipc64_perm {
        compat_key_t key;
        __compat_uid32_t uid;
        __compat_gid32_t gid;
        __compat_uid32_t cuid;
        __compat_gid32_t cgid;
        compat_mode_t mode;
        unsigned short seq;
        unsigned short __pad2;
        compat_ulong_t __unused1;
        compat_ulong_t __unused2;
};

struct compat_semid64_ds {
        struct compat_ipc64_perm sem_perm;
        compat_ulong_t  sem_otime;
        compat_ulong_t  sem_ctime;
        compat_ulong_t  sem_nsems;
        compat_ulong_t  sem_otime_high;
        compat_ulong_t  sem_ctime_high;
};

struct compat_msqid64_ds {
        struct compat_ipc64_perm msg_perm;
#ifndef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_stime_high;
#endif
        compat_ulong_t  msg_stime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_stime_high;
#endif
#ifndef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_rtime_high;
#endif
        compat_ulong_t  msg_rtime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_rtime_high;
#endif
#ifndef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_ctime_high;
#endif
        compat_ulong_t  msg_ctime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
        compat_ulong_t  msg_ctime_high;
#endif
        compat_ulong_t  msg_cbytes;
        compat_ulong_t  msg_qnum;
        compat_ulong_t  msg_qbytes;
        compat_pid_t    msg_lspid;
        compat_pid_t    msg_lrpid;
        compat_ulong_t  __unused4;
        compat_ulong_t  __unused5;
};

struct compat_shmid64_ds {
        struct compat_ipc64_perm shm_perm;
        compat_size_t   shm_segsz;
        compat_ulong_t  shm_atime;
        compat_ulong_t  shm_dtime;
        compat_ulong_t  shm_ctime;
        compat_pid_t    shm_cpid;
        compat_pid_t    shm_lpid;
        compat_ulong_t  shm_nattch;
        compat_ushort_t shm_atime_high;
        compat_ushort_t shm_dtime_high;
        compat_ushort_t shm_ctime_high;
        compat_ushort_t __unused2;
};

/* MIPS has unusual order of fields in stack_t */
typedef struct compat_sigaltstack {
        compat_uptr_t                   ss_sp;
        compat_size_t                   ss_size;
        int                             ss_flags;
} compat_stack_t;
#define compat_sigaltstack compat_sigaltstack

static inline int is_compat_task(void)
{
        return test_thread_flag(TIF_32BIT_ADDR);
}

#endif /* _ASM_COMPAT_H */